432 MHz AND ABOVE EME NEWS
May 2002 VOL 31 # 6
ALLEN KATZ, K2UYH
ENGR DEPT., THE COLLEGE OF NEW JERSEY, TRENTON, NJ 08650-4700 (W 609-490-2817
OR H 443- 3184, FAX 609-443-1713, AND EMAIL:
Allen Katz, K2UYH
PRODUCTION ASSIST: BRIAN MULLANEY, KB2TIS or (609-883-6390)
NETNEWS EDITOR: G4RGK, DAVID DIBLEY
EME DIRECTORY: DL4EBY/DK0TU, KLAUS TIEDEMANN,
HALSKESTR.35, D-12167 BERLIN, (49-30-7955467), E-Mail:
***E-MAIL LIST COORD: Warren, W2WD ***
*** NA EME BBS: 704-284-4854 ***
14.345, 10 AM ET SATURDAYS, AFTER VARO NET SUNDAYS:
There is so much news this month it is nearly
incredible! The big new should be the 2nd leg of the
DUBUS/REF Contest, but 24 GHz is steeling the headline. RW3BP
has extended 24 GHz EME to Eur by working both W5LUA and
VE4MA. Later Sergei worked AA6IW for his initial #3 and a new
24 GHz distance record. VE4MA is now up to initial #4 on 24
GHz after completing with VE7CLD and AA6IW.
Conditions appeared very good during the EME contest on 1296
with high QSO counts. OZ6OL worked 48 stations with only one
day of operation. However, 10 GHz is started to pull activity
from 23 cm with many stations achieving over 10 QSOs. The
times are certainly changing! We truly need a separate EME
contest for the microwave bands. KL6M made it on 1296 for the
1st time and generated some special interest.
70 cm was not to be out done. IS0/DJ5MN showed up on 432 and
was worked by at least DL9KR and SM2CEW. Unfortunately this
dxpedition received very little publicity. This will not be
the case for W2WD's trip to NB - see below.
The success of JT44 on 70 and 23 cm would be big new, if this
were a quieter month. DL4KG and others made several JT44 QSOs
on 432. W7SZ is experimenting with it on 1296.
NEBRASKA 432 EME DXPEDITION: W2WD is going to put NB back on
70 cm EME on 14, 15 and 16 June - see Warren's report for
3B8/ON4AME Johan is considering
adding 70cm EME to his dxpedition planned March 2003. He is
looking for help with equipment. There are some other hams
going along who have EME experience. He is looking for people
willing to donate (ship stuff to a secure address in 3B8). He
needs bits and pieces - coax, antennas, amps, preamp. You can
drop me a mail or contact Herman firstname.lastname@example.org. It must
be clear that any sponsored equipment is bound to stay in 3B8
so that it can be reused for the next expedition. Herman has
secured a home for a 2 week period in Flic en Flac on the
Luis writes - I was not too active
since the ARRL contest. I had a 23 cm amp failure at the end
of the 2nd ARRL contest weekend. My GI7b could not handle all
the contest "emotion" (>350 W is really too much for this
tube). I ended with 37x20. Now I am thinking of building a
GS23b or a GS35b for 23 cm for the next contest.
Participation in the DUBUS Contest started not too well on
5.7 GHz with just one QSO with F2TU. All the other signals
were much weaker than before. Later I heard from Jean Pierre
F1ANH that he got no signal from me during the QSO with F2TU.
This was rather strange as I was hearing 12 dB echoes. The
fact was that I had the TX and RX ports swap and was running
the wrong pol sense. I don't know this happened. Past QSOs on
5.7 GHz were F2TU, F1ANH, and recently ZS6AXT. However my 5.6
GHz setup was not at its best as I'm having a lot of humm
noise (100 Hz) from the TWT power supply. The 2nd part of the
DUBUS contest, on 10 GHz, went much better. There was higher
activity and faultless operation from my old 10 GHz feeder
with 22 W in linear pol. I worked on random F6KSX, WA7CJO,
F2TU, G4NNS (9 W only), F1BLL, PA3CSG (sked), W6HD, and
OK1KIR. I ended with 9x7. I always have a huge amount of
trouble with the changes in pol with the moon position (I'm
using a polar mount). I'm building a new feed assembly for 10
GHz with circular pol and hopefully with much higher power. I
understand that a linear pol system is a bit easier to
construct, but the geographical spread of stations and the
mix of mount types makes a rotatable linear feed essential.
It is simpler to build a fixed circularly polarized feed
assembly. I thus support the use of circular pol on all
microwave bands and will shortly be there on all bands.
Guenter send 1296 EME info -- I am back
on 1296 with a 10 m dish. The old one was destroyed from snow
overload when I was on holiday at Christmas. I had some
problems with the feed, but now it seems to be working fine.
Sun noise is about 23/24 dB (Flux 170). My echoes are really
impressive comparing with my old 6 m dish. I still have
several mechanical problems and can only operate with calm
Gerald writes -- I had a good time
in April. On the 17th I played a bit with the new JT44 mode
in the WSJT program and had a good QSO with DK3BU for initial
#72. The signals were not audible, but the program decoded
all details. The QSO was complete in 13 minutes! I worked on
20 April VK4AFL (O/O) #73, on 21 April DL8OBU (O/O) #74 and
partial G4RGK - heard were DL9KR and DJ5NV, on 22 April DJ3FI
on random with good signals but rapid fading. All these
stations were with normal CW. A sked with WB5APD failed on
JT44 at his moonrise. I will be not QRV in May due to
J-Jacques has his new F1EHN EME
System software available. The new version (4.3.20)
(FREEWARE) can be downloaded at:
F1EHN EME System Software
The new version
includes some improvements in the real time management and
Doppler shift calculation. There is also a complete new EME
calculator program (EME and Noise calculators). The tracking
supports now the ARSWin interface from EA4TX. Of course the
complete program runs without the tracking interface. Thanks
to W6/PA0ZN and VE1ALQ for their help. I very much appreciate
e-mail reports from users. Please include a short station
overview. These will help me to improve the system and make
the next version.
Philippe's REF/DUBUS Contest results -
In April on 10 GHz, I QSO'd F6KSX, PA3CSG, DL2LAC for initial
#20, OH2AXH, F1BLL, WA7AJO #21, CT1DMK # 2, G4NNS, F1ANH,
LX1DB, W6HD, AA5C, K6RE #23 and partial DL0EF. Heard were
I5PPE, OK1KIR and F1BLL. On 23 cm I made 50 QSOs with the
happy surprise to contact KL6M in Alaska towards the east at
moonrise. Back in March on 70 cm I made 39 QSOs, but found
bad conditions with 90° between RX and TX. I was on 13 cm the
evening of 23 March and found conditions fine. QSO'd were
F1ANH, OE9XXI, OK1CA, ON5RR for initial #32, OE9ERC, SM3AKW,
OK1UWA, OH2AXH, G3LQR, OZ4MM, G3LTF, JA4BLC, LX1DB and
OK1KIR. I was also active on 6 cm and worked F1ANH, JA7BMB,
ZS6AXT, LX1DB and CT1DMK. My finals tally was on 70 cm:
39x25, 23 cm: 50x24, 13 cm: 14x10, 6 cm: 5x5 and 3 cm: 13x10
for an overall score of 121x74 for 1,132,200 points.
J-Jacques, F1EHN sends his groups
Eur EME contest results - We were QRV on 3 cm EME (single
band and multi-operators) in JN18ar. We made 14 QSOs (all on
random) and 10 multipliers. The station was 50 W output, 3.3
m dish, 0.8 dB NF and F1EHN EME tracking system. The
operators were F6ECX, F6DLA, F4UPG, F1SXC and myself. We
worked at on 20 April at 1609 I5PPE (O/O), 1705 DL0EF
(O/439), 1737 G4NNS (M/O), 1805 OH2AXH (O/O), 1906 PA3CSG
(O/O), 1912 F2TU (O/O), 2020 WA7CJO (539/O) and 2110 CT1DMK
(M/O), and on 21 April at 1540 F3VS (M/O), 1657 IK2RTI (M/O),
2027 F1BLL (539/O), 2055 OK1KIR (M/O), 2135 W6HD (549/539)
and 2201 K6RE (O/M) for 14,000 points. The random activity
was very poor during the Eur window and increased during the
NA window in spite of the large number of Eur stations. We
regret that the rules don't reward random QSOs on the
microwave bands. This possibly could improve the activity.
Simon reports on the 2nd weekend of the
DUBUS/REF Contest -- Activity seemed quite high and condx
pretty here with a visible moon most of The time, so I could
track with camera. I can now work with some success quite
early in my east window, even with one of my tropo towers in
front of dish and also some tinned roof buildings. A little
work on the position of the feed produced 18 dB of sun noise
with flux at 200. I think this is the best for my 4.2 m dish.
Power is 250 W in the shack and about 150 W at the feed. I
worked 26 stations without trying too hard as follows: G3LTF,
SM3AKW, G4CCH, F2TU, OE9XXI, HB9Q, F6KHM for an initial (#),
ON5RR, HB9BBD, OK1CA #, KA0Y, W2UHI, OE9XXI, ZS6AXT, JA6AHB,
F6CGJ, OZ6OL, OZ4MM, K2UYH, K5JL, W4OP, HB9SV, VE6TA, VE9DW,
WA1JOF # and WA6PY # - I was surprised by Paul's reply to my
low power call. At least another 10 stations were heard, but
not called as they were busy.
Peter was active on 2
weekends in April -- On the 13th, I was on 1296 and worked
W2UHI, KA0Y on SSB, IK2MMB and CWNR IK3COJ. I QSO'd in the
DUBUS Contest 20 April SM3AKW, HB9BBD, F2TU, F/G8MBI, F1ANH,
G3LQR, DL1YMK, HB9SV, JA6AHB, DH9FAG, ON5RR, ZS6AXT, F6KHM,
SM6CKU, OZ6OL, GW3XYW, F6CGJ, K5JL, F6ETI, OZ4MM, W2UHI,
K2UYH, OK1CA, KA0Y, WA6PY, VE6TA, HB9BHU and DK0ZAB, and on
the 21st OE9XXI, OE9ERC and DL4MUP. CWNR were JH0YSI and
K9KFR. My operating time was limited, especially on the 2nd
day. I fixed up a sked with KL6M for the 24th April.
Fortunately I set the alarm an hour early as when I got up
the preamp had condensation in it and had to be changed. We
made the QSO for initial #188 at 0250 with nearly 2/3 of my
dish obscured by bushes. I was very pleased with this one! I
also worked VE9DW, who was about on the frequency. I'm busy
rebuilding the dish drive mechanism again, having got a hold
of some very good reduction drives. I also am planning to
upgrade the dish surface to enable it to work on 9 cm. The
transverter for that band is progressing.
Brian reports on his April
10 GHz activity -- I Worked WA7CJO (O/O) - before start of
contest for initial #8, DL0EF (O/O) #9, F6KSX (O/M), OH2AXH
(O/O) #10, CT1DMK (M/M) #11, partial F2TU (M/T), PA3CSG
(O/M), LX1DB (O/O) #12 all on random. Also heard and called
were I5PPE, IK2RTI and F1BLL. K6RE was heard on sked and was
heard W6HD but not call. I have been following the JT44
debate, but prefer my ears. It was observed by G4FUF, who was
listening in to the G4NNS operation, that ears appear to work
best when their owner stands at the back of the shack away
from the rig and well behind the operator who frequently
hears nothing but white noise, and appears to become
mesmerized into ignoring even perfectly readable signals! Any
serious test of JT44 will have to outperform the ear placed
well behind the operating position and without the use of
headphones. [I not sure that JT44 will work with signals you
can't detect with your ears. I have seen many occasions where
I can detect, but not identify a station. Here is where the
big advantage of JT44 lies. By the comparison on repeated
transmissions, it can decode what has been sent.] Regarding
the debate on pol for 10 GHz, I offer the following: Due to
my semi-polar mount I have to adjust pol with Azimuth. To do
this I have a motor and worm drive to rotate the OMT feed
assembly, WG switch and Pre Amp behind the dish. This is
remote controlled from the shack with a pot driving a meter
to display the setting, thus it is quick and easy to adjust
pol. I decided to try rotating the pol while listening to
some of the more stable signals on 10 GHz. My initial
impression is that pol doesn't make a lot of difference at 10
GHz. presumably this is because the pol of the echo is
scattered. But I do not have the means to accurately quantify
this statement at the moment.
Dave was on 70 cm for the April SW. He worked DJ5NV,
K1FO, UA3PTW and DL7APV who had an outstanding signal. Dave
heard K9SLQ and S52CW with a very good signals, but couldn't
raise them. DL4KG called, but was lost.
Stu was QRV on Saturday 20 April on 23 cm EME and
worked the following: HB9SV, G4CCH, SM3AKW, HB9BBD, G3LTF,
F1ANH, ON5RR, OE9XXI, OE9ERC, F2TU, ZS6AXT, VE9DW, OK1CA,
W2UHI, IK2MMB and OZ6OL for a total of 16x12. Stu reports
that work is proceeding on re-using his 10 GHz EME gear, and
that he may be QRV again before too long.
Dominique was active the 1st day
of the Eur Contest and scored 43x23 on 1296 with 3 initials.
My window to moonset is very limited so I tried to still call
with more than half the dish obstructed. Surprisingly, some
more stations could be worked, including WA6PY with good
Dan writes - Stations wishing to work us
on 144, 432 or 1296 EME, please drop us your e-mail or post
address. We will inform you on short notice about our next
activity date. We will keep you updated on when and where to
look for us. Our next activity will be 18 May. We will advice
about exact times and frequencies. Have you updated your
initial standings on the only online-EME-initial-toplist? If
not click now!
Alex reports on the "10 GHz
Toscana EME Team's" contest results -- Pietro I5PPE and
myself operated under the call I5PPE (from JN53ns). We noted
good activity during the DUBUS/REF Contest, despite poor WX
conditions. We worked 6 stations (F6KSX, DL0EF, OH2AXH,
DL2LAC, WA7CJO, W6YFK and F1BLL) and CWNR 4 others (G4NNS,
K6RE, F2TU, LX1DB) and possibly copied PA3CSG. The station is
3 m dish with f/d = 0.28, HB corrugated "Chaparral like" feed
with switchable V/H pol, 35 W (at horn) Siemens TWTA, HB
ATF36077 LNA and DB6NT Transverter. Moon noise is about 0.9
dB. Moon Tracking is manual with VK3UM software + Video
Toshio's log for the DUBUS/REF
contest includes the following QSOs on 432 on 23 March at
0402 K1FO (559/549), 0414 K5WXN (549/559), 0440 KL6M
(559/549), 0447 VE6TA (559/559), 0531 VK3UM 559/559), 0554
VK4AFL (559/559), 0608 K2UYH (O/O), 0623 JJ1NNJ (M/O), 1323
DL9KR (589/579), 1328 UA3PTW (559/559), 1335 F6KHM (569/569),
1344 DJ5NV (569/559), 1358 SM2CEW (559/559), 1411 HB9Q
(569/549), 1430 G3LTF (559/559), 1515 JA9BOH (M/M), 1526
JS3SIM (559/549), 1541 OE5EYM (559/559), 1613 OH2DG (549/559)
and 1625 ON5OF, (559/539), and on 24 March 0656 7M2PDT
(559/549), 1440 JH0WJF (549/559), 1452 PA0AVS (559/559), 1514
JH4JLV (559/559), 1619 RA3LE (449/549), 1635 F2TU (559/559),
1647 DK3WG (O/O), 1718 DL1YMK (O/O), 1758 DJ3FI (O/O) and
1810 OK2BDQ (539/549) for 30x19. Toshio worked on 1296 on 20
April at 0304 K5JL (569/559), 0315 K9KFR (559/559), 0358
JH5LUZ (559/559), 1224 OZ6OL (559/559), 1232 F2TU (569/559),
1241 OE9ERC (569/559), 1251 HB9BBD (579/569), 1307 F6KHM
(559/529), 1315 HB9SV (569/569), 1323 SM3AKW (549/549), 1330
OE9XXI (579/559), 1357 G4CCH (559/559), 1406 OK1CA (559/549)
1443 HB9BHU (549/439), 1456 HB9Q (579/429), 1507 G3LTF
(559/559), 1545 DH9FAG (549/549) and 1600 ZS6AXT (549/559),
and on 21 April 0522 K2UYH (O/O), 0532 VE6TA (O/M), 1340
F6ETI (O/O), 1352 F/G8MBI (M/O), 1422 F6CGJ (559/559), 1429
F1ANH (549/439), 1455 OZ4MM (559/559), 1512 F5HRY (O/O), 1527
DL1YMK (329/539), 1608 ON5RR (O/O), 1641 DL4MUP (549/529) and
1656 G3LQR (549/559) for 30x12. His overall score was 60x22
or 132,000 points.
Cowles is temporarily off 70 cm EME -
- I suffered a lightning hit that took out a lot of my Ham
and equipment. The azimuth rotor is dead along with my FT-
736R and tracking computer. It appears that my power amp was
unharmed. I had good grounds and surge protection on the
antenna system. The hit appears to have come in on the phone
lines. The Bell box was in sad shape. I am in the process of
getting things fixed, so I hope not to be down for too long.
I will let everyone know when I'm QRV again.
Scott has decided to down size
his EME efforts and has his big dish and parts of his
stations up for sale - see the FOR SALE section. He says that
pressure from work has prevented from doing the needed
maintenance and that he has "an itch to try some QRP (.5 kW
or less) EME on 23 and 70". He is going to rebuild a smaller
antenna system. He may use yagis on 70 cm and a 5 m dish on
Mike was QRV for the DUBUS/REF
Contest on 1296. The system included barrowed equipment and
was only temporary. However, he does plan to get back on 1296
permanently in the future -- I finally made it on the air on
1296. I still have not gotten my new position indicator
working, so pointing is a big problem for 1296 operation. I
managed to work 7 QSOs the 1st day even though I had quite a
few interruptions, including a funeral to attend. We had high
winds (79 mph) here right up until the start, so I wasn't
sure I would be on at all. My 1st QSO was with K5JL (very
appropriately, since he has been bugging me to get on 1296
for quite some time). My receive performance is way short of
my expectations. QSO'd during the contest were on 20 April
0505 K5JL (539/559), 1107 HB9Q (539/429), 1113 F2TU
(539/539), 1205 OZ4MM (529/429), 1211 HB9BBD (539/549), 1305
OE9ERC (539/449) and 1309 OE9XXI (539/559), and on 21 April
0005 W2UHI (O/O), 0014 G4CCH (O/O), 0104 F6KHM (O/O) and 0124
K9KFR (529/449). Among those QSO'd after the contest were
G3LTF (429/429), VE9DW (539/539) and K2UYH. Nil on W4OP. Thus
far I am up to initial #15. I will be traveling until the
Italian contest and then return on 432.
Franta reports -- I was QRV on 1296 MHz
on 20 April and the early hours on 21 April. I worked on 1296
35 QSO and 6 initials (F6KHM, W4OP, KA0Y, DL1YMK, DK0ZAB and
DL4MUP). 1296 signals on Saturday were very fine. I also
tried 10 GHz, but had the trouble with the tracking of my 3 m
Stig's contest report -- I found
general good condx on 1296 in the contest except at moonrise
on Sunday. I worked 47 stations despite only little time for
activity. Among these contacts I had initials with: JH0YSI
(529/O), KL6M (429/529), DL1HTT (539/579), F5AQC (55/55) and
F6KHM (579/579) to bring me to initial #198. Saturday night
we experienced some very strange condx: I heard OZ6OL calling
CQ at 2204 (AZ 261, EL 32) with aurora like sound! I have
never heard Hans direct during 1296 EME operation as we are
living more than 100 km away and both are using narrow
dishes. I heard him calling CQ for only one sequence, then he
disappeared. After tuning around I found Hans again working
K2UYH with good signal via the moon (559). At +2 KHz higher
his "Aurora like" signal was found. I would say at (55A). I
got busy to get Hans` attention and we phoned each other.
After moving higher in the band we could give each other
(55A) - now with 263 deg AZ and 31 deg EL. We then moved our
dishes to 0 deg EL and 263 deg AZ. Now we gave each other
59+A. 20 min later I found SM3AKW making CQs, but NO aurora
sound on Carl's signal! We are not sure what we experienced,
maybe some kind of backscatter or even aurora on 1296? We
wonder if any others have experienced similar on 1296, maybe
in the contest. [I have heard aurora like signals over
similar distances on 1296.]
Hans' report for April 1296 EME - I
worked on 12 April K9KFR (559/449) for an initial (#),
F6KHM (559/449) and (53/52) on SSB (#) and DF4PV (559/559). I
was not able to be QRV for the whole DUBUS contest, but
managed to work 42 stations. I was active 20 April and QSO'd
JA6AHB, HB9BBD, HB9SV, F6KHM, OE9XXI, ON5RR, F2TU, SM3AKW,
JH0YSI (#), F/G8MBI, DL1YMK, F1ANH, OE9ERC, G3LTF, VE9DW,
N2IQU, W2UHI, GW3XYW, F5PAU, HB9Q, K5JL, ZS66AXT, OZ4MM,
F6CGJ, G4CCH, VE6TA, K2UYH, KA0Y, OK1CA, DL4MUP, F5HRY,
DH9FAG, G4LQR, IK2MMB, SM6CKU, F5AQC, F6ETI, W4OP, VE6NA,
W7GBI, WA1JOF and WA6PY.
Sergei has joined the very elite club of
those completing EME QSOs on 24 GHz - On 18 and 20 of April I
had my 1st QSOs on 24 GHz with W5LUA and VE4MA. I also heard
AA6IW when he tested before his sked with VE4MA. On Sunday
April 21 I worked AA6IW for initial #3, and a 1st 24 GHz EME
QSO for Lars. What is remarkable about this QSO is that the
moon was only at about 7.5 deg el at the end. The atmosphere
normally absorbs RF at low angles on 24 GHZ and adds Rx noise
from the temperature of the atmosphere. [This is certainly a
new 24 GHz distance record (KO85ws to CN87vi).] My station is
a 2.4 m offset dish with rectangular horn as a feed. I can
set speed of Az and El motion to provide autotracking with
better then 0.1 deg accuracy in a 30 min period. The TX is a
50 W TWT placed at the feed point on a water-cooled Al plate.
The PS (13 kV/5.6 kV) is homemade and placed at home. The RX
uses a DB6NT LNA with 1.65 dB NF, and a converter and LO by
RA3ACE. I use separate feeds for TX And RX. TX/RX change-over
is provided by moving the TWT - LNA block up and down by 40
mm. It takes 0.25 s to move it down to the RX position. So it
is possible to get own echo very well. In the TX position,
the RX feed is shielded by lossy rubber. It is also good
reference for noise measurements.
Carl reports on the contest -- I
chopped a couple of trees down a few days before the contest
to gain an extra 45 min of moonset window! I was surprised to
work K5JL and OE9XXI at the start of the contest with 9
degrees of el and the moon totally invisible through dense
forest. My score was 46x26 on 1296. QSO'd were K5JL, OE9XXI,
OZ4MM, OE9ERC, F6KHM, OK1CA, JA6AHB, HB9BBD, F2TU, G3LTF,
HB9SV, F1ANH, OZ6OL, G3LQR, ZS6AXT, G4CCH, HB9Q, F5AQC,
GW3XYW, SM6CKU, N2IQ, W2UHI, DH9FAG, ON5RR, KA0Y, K9KFR,
F6CGJ, K2UYH, IK2MMB, WA6PY, VE6TA, W4OP, W6HD, OK1KIR,
DL4MUP, F6ETI, F/G8MBI, IK3COJ, DL1YMK, F5HRY, F5PAU, VE9DW,
OE5EYM, K9BCT, WA1JOF and W7GBI. CWNR were VE6NA, W7BBM,
DK0ZAB, JH0YSI, HB9BHU, HB9BCD, OK1UWA and G4DZU. I made a
few contacts on 144 as well and ended with 98x65 (4 bands)
for 637,000 points.
Ben was back on 1296 for the
DUBUS/REF Contest. He reports that signals were good and that
he worked 22 stations. He was using only with my 50 W to his
old 8 m dish. He CWNR DL4MUP and VE6TA many times, but only
received QRZs. A couple of initials were also added.
Barry writes -- I had a very nice and
easy (M/O) QSO with RW3BP on 24 GHz. His signal was very
solid (almost "O"). This is initial #2 for both of us. Lars
AA6IW and I had a sked, but I did not hear him, however RW3BP
heard both of us in spite of his low elevation angles. Three
days later VE7CLD and I completed an (M/M) QSO #3, a new
country (3) and a 1st 24 GHz EME QSO for Gunter. After I also
had an (M/M) QSO with AA6IW #4. Signals were very smeared
(except for Sergei who was heard with Lars). Interestingly
Lars observed a very much narrower spreading on RW3BP than
myself. Unfortunately W5LUA missed all the activity as he was
in New Orleans. Next month is sure to bring much activity and
many new QSOs. All stations are running high power TWTAs (>75
Watts) most through the assistance of Paul, W2PED.
Charlie in QF22MC writes -- I am
trying to arrange some 70cm EME skeds. I am a small station
with a 21.6 dBi gain antenna and 200 W and no EL control
(yet!) I have had success on 2 m EME with the bigger stations
and the EME bug has bitten! I would now like to try 70 cm.
[Elevation is much more important on 432 then 2 because of
the much lower sky noise. I am sure you can make some QSOs,
but if you can move the main lobe of your antenna above the
ground, it will make a big difference!]
Warren has lots of news this month!
He is heading out to Omaha, NB for a family reunion and plans
to put the state back on 70 cm EME while there. He expects to
arrive on 13 June and operate from the 14th through the 16th.
Warren plans to operate from K9RZ's QTH email@example.com with
a portable 20' stress dish. He wants to concentrate on random
operation, but will consider skeds with stations with special
problems. He will try to maintain contact via HF (20 m net)
and e-mail. Warren has also taken over the task of
maintaining the 70 cm up EME e-mail directory from KD4LT. So
if you have a change of e-mail address, make sure you get it
to Warren. He plans to regularly distribute the directory
just as Scott did.
Dale was active during the
recent contest on 1296 and made contacts (OE9XXI, W2UHI and
K2UYH..). He writes -- Currently I am running a 12' dish
with VE4MA polarizing stubs feed, 0.32 dB NF LNA and a 2 x
2C39 cavity PA at the dish. I just got in a nice PYE YD1336
UHF TV cavity that others are running conservatively at 500
W. This will be a big project. I doubt I'll get it done
before the fall contest.
AL reports that he worked RW3BP
(M/M) on 24 GHz EME on 18 April about 7 days before Perigee -
It was tough conditions with high temp and high humidity in
Texas. This was my 2nd initial. My station is a 3 m dish and
55 watts at the feed.
Paul was active with his 2.4 m dish in
the Eur EME Contest - I QSO'd on 432 4 stations and on 1296
21 stations. After the contest I had a sked with KL6M. KL6M
was quite weak. I heard my echoes stronger. In the middle of
the sked my echoes disappeared and I discovered that my AZ
motor was not moving. Fortunately only a wire to the motor
had broken and I lost only one sequence. We completed our
sked (M/M) to give me initial #56. I have lost track of who
has received my QSLs and who has not. If I omitted someone
please send me yours. I have all my old QSLs from the very
beginning and all my logs from the past.
Tony in OH (EN91) is
assembling a station for 23 cm EME. He hopes to be QRV this
summer and has a 12' dish with 0.37 f/d, VE4MA feed with
circular polarization and 2 x 7239 PA.
Denishas serious gear for
both 70 cm (GS35b PA and fully steerable 4x9 wavelength M2
yagi array) and 23 cm (YD1336 cavity) and is interested in
becoming active again. Denis is located just North of
Chepstow on the G/GW border. He wants to make contact with
local hams who are already active and wouldn't mind him
coming to take a look at their station - or maybe even
sitting in on a contact or 2?
Ivo's April report -- After
working JA7BMB on 6 cm, I asked LX1DB for a 6 cm sked and we
made it just before the Eur Contest, on 19 April, with
(559/449) reports. This was my #13 initial on 6 cm. Clear and
windless WX helped a lot. 23 cm operation in the contest
started well on Saturday the 20th, but after few QSOs output
power of my PA became erratic and I lost few hours before I
found that one of the connectors on the dish tower was loose.
After repair I worked HB9Q, HB9BBD, HB9SV, OE9ERC, OE9XXI,
F2TU, SM3AKW, JA6AHB, ON5RR, F6KHM (is he a new station, or
just special callsign? [See the April NL. I believe this is a
new station].) for initial #179, G3LTF, F5PAU, DF4PV, G4CCH,
GW3XYW, OK1CA, DK0ZAB, N2IQ, VE9DW, W2UHI, OZ4MM, F6CGJ,
F6ETI, K2UYH, KA0Y, OZ6OL and K5JL. CWNR were HB9AGE and
K9BCT. On Sunday 21 April I added F1ANH, G3LQR, SM6CKU,
DL4MUP, F/G8MBI, DH9FAG, HB9BBD (dup), OE5EYM, W4OP, IK2MMB,
VE6TA and WA1JOF on horizon. CWNR were F5HRY, K9BCT, GM4ISM
and W7GBI. And again due to my limited moon window I missed
the west of the US. Not a very exciting score of 38 stations,
but I was running limited time and due to the repairs and
lower power, just around 150 W. Despite that I was getting
mostly good reports and my own echoes were good. There was
perfect WX during the weekend, which helped to make it a
Great Contest! Before removing my 6 cm assembly from the feed
for service and checking I put a proposal for 6 cm skeds on
MOON-NET, but only Luis, CT1DMK responded. We made it again
on Thursday 25 April at 2300. It was a few minutes QSO this
time in perfect WX, which was spoiled by few clouds just few
minutes after the sked started. I was using my CCTV camera
for accurate moon tracking. I am not happy with the signal
strength of my echoes and low moon noise, just 0.6 dB at
best. I hope to improve it. The position of the 6 cm horn is
not yet optimized.
I tried to concentrate on 1296 and the DUBUS/REF
Contest as much as possible during the April SW. We had a
warm spell just before the contest and this put the leaves
back on the trees to greatly limited my moon window. What a
difference one week makes! I was QRV on 20 April shortly
after the contest start and worked at 0021 K5JL (579/579),
0027 VE6TA (559/559), 0034 OE9XXI (58/56) on SSB and 0045
K9KFR (559/559). Activity dropped after the end of the Eur
window. I had to quit early and missed the Asian window. N2OU
and KB2TIS came by on Saturday to help with operating. We
QSO'd at 1950 OE9ERC (579/569), 1956 W2UHI (559/559), 2000
G4CCH (569/569), 2021 K9BCT (559/559), 2030 SM3AKW 559/559),
2033 ZS6AXT (559/569), 2039 ON5RR (569/559), 2045 DH9FAG
(559/559), 2052 G3LTF (559/559), 2055 IK2MMB (559/559)
[QRM?], 2108 HB9Q 579/559, 2113 F1ANH (449/559), 2118 W4OP
(449/549), 2135 HB9BBD (589/579), 2202 F6CGJ (579/569), 2209
OZ6OL (559/569), 2216 HB9SV (579/589), 2223 DL1YMK (449/549),
2240 HB9BHU (449/449), 2311 W6HD (559/569), 2316 KA0Y
(569/559), 2337 OK1CA (559/559) and 2345 F2TU (55/54) on SSB.
I had to leave the contest early and Marc and Brian were not
available either. When I returned home I was able to get on
for the end of my Asian window. The dish was more than 50 %
blocked by trees, but amazingly I was able to QSO on 21 April
at 0450 WA6PY (O/O) and 0522 JA6AHB (O/O). On Sunday I added
at 2011 OZ4MM (579/569), 2030 partial F5HRY (549/?) [QRM],
2049 F6HKM (569/559) for initial #200, 2100 SM2CKU (559/569),
2113 G3LQR (559/569), 2119 VE9DW (569/569), 2253 WA1JOF
(559/559) and 2315 W7GBI (559/559) for a total of 37x24. It
was an excellent contest. At 2130 I switched to 432 for a
sked. Around 2150 I heard DL7APV with an excellent signal and
gave him several calls, but he only replied with QRZs. I then
worked at 2205 PA0PLY (549/529) for initial #652, and
immediately switched back to 1296. After the contest we tried
a sked with KL6M. We heard Mike, but he could not copy us. We
tried again and worked on 24 April at 0325 KL6M (449/539). I
am setting up for JT44 and very interested in skeds via this
mode (as well as normal CW).
G4RGK, DAVID DIBLEY
SM2CEW was not on 23 cm due to high winds, but was on 70 cm
and worked IS0/DJ5MN.
IS0/DJ5MN was using 1 long yagi and 1kW.
DJ5NV worked IS0/DJ5MN on 432.
DL9KR also worked IS0/DJ5MN.
W5ZN reports no progress on his EME projects. He will be
working on the system this summer.
K5PJR hopes to be on 23 cm shortly with portable station
using a 4 m dish and 350 W.
K6IBY has his array back up and should be QRV on 432 in May.
WB0GGM made 4 initials on 70 cm in March with JJ1NNJ, G3HUL,
F6KHM and PA0AVS and is now up to initial #107.
WA0WPJ (EM29) in MO has many questions about 23 cm PAs.
F5SDD has a big problem with his 70 cm amp. He hopes to have
it fixed for the next SW.
W7SZworked W7LHL using JT44 on 23 cm EME. [I believe this
is the 1st JT44 23 cm QSO. How about more details?]
NA4N's dish is up and the az/el is operational. He hopes to
be QRV on 23 cm in a few months.
N4PU reports good progress on his dish project.
K5JL worked about 60 stations in the contest on 1296. During
the JA window only JH6AHB and KL6M were on the 1st night.
There was no other activity heard.
KA0Y worked F6KHM, G3LTF, KL6M, GM4ISM and HB9SV - who was
over S9 during the contest on 1296, among many others.
W2UHI worked during the Eur Contest on 23 cm IK2MMB, DK0ZAB,
KL6M and F6KHM, but lost WA6PY; in all he made 32 QSOs.
WA9FWD has fired up the GS35 PA his is working on, and is
concerned about "N" connectors at high power on 23 cm. He
asks for comments?
K9BCT worked K9KFR for a new initial on 23 cm during Eur
KU4F has a G3SEK triode control board built now and
autotrack running on his dish.
W7MEM had a good contact with G4YTL using JT44 on 70 cm.
Mark has wave files available.
KG6FCB reports a little progress. The dish is up and he is
waiting on power amp.
K9KFR is QRV again on 1296 with a big signal. He made many
contact in the DUBUS Contest but did not complete with
VE6NA now has 250 w on 23 cm.
VE1ALQ asks for information on F6KHM. [See the last NL!]
W1IPL hopes to be back on 70 cm in a couple of weeks and is
working towards 23 cm EME.
VE6TA was on 23 cm during the contest and worked 24 stations
with 4 initials. The new brick is working better.
WA1JOF is now at initial #58 on 23cm tnx to K9KFR.
PA3CSG made a few QSOs on 10 GHz and added 2 initials.
GM0ONN will not be QRV on 1296 in May.
GM4ISM made 3 contacts on 23 cm during the contest.
F/G8MBIwas active on 1296 during April contest weekend and
added JA6AHB and 2 other new ones to bring his total to
initial #36. He will not be on for May SW, but will be back
DL1YMK is working on YD-1336 amp. He has 400 W out so far
and would like to exchange info others.
G3LTF is looking for US stations on 13 cm. He had a nice QSO
with KL6M on 23 cm in April.
K5WXN had a problem with his 70 cm AZ rotator during the SW,
but now has it working again.
W6HD during the April DUBUS/REF Contest weekend was operated
multiband/multiop. K0YW was at the 23 cm position and Tay was
on the 3 cm controls.
KM5A has a new e-mail address .
Steve is making progress on his EME system. It will consist
of 4 x 21 el yagis on 432. The pointing system and 1 yagi are
W9IIX at wants info on setting up a
1296 EME station. He has a 150 W PA and a 10' dish.
K7XQ has a new e-mail address firstname.lastname@example.org.
KD4LT has available a FT-736R with 50,
144, 432 and 1296; 2x 2C39 1296 amp w/ PS and water cooling
system; TH-327 1296 cavity amp w/all power supplies except
HVPS (spare tubes); TH-551 432 cavity amp w/all power
supplies (extra tube); Parabolic TVS 1296 transverter;
Parabolic TVS 144 transverter (have 2); and 32' 432 dish,
mount and computer control system as well as the 1294 22'
dish system. Scott's tel is 229-890-2506.
F5RYZ has a 300 W 50 dB gain 5-8 GHz TWTA for sale.
He will delivery it at Dayton. He will be at Dayton and I can bring
the complete set up with a Varian VTX6381T1 TWT and VPW6893B3
PS. It's perfect for 5.7 GHz EME. The output of the tube is
to WR137, but cannot be used on 10 GHz because there's a
resonant window. The set up is fully tested and in perfect
working condition. It could be used on triphase 110 V or 208
V mono. He will consider an exchange for T&M hardware.
Contact Sebastien by e-mail at: F5RY
N6BQ has a 23 cm feed (no polarizer) but with probes and
high power DL7YC hybrid. Send e-mail to:
VE6NA is looking for 7289 type tubes with screw on caps.
NA4N is collecting parts for a 23 cm PA and is looking for a
90 deg shaft assembly to tune the plate.
W2DRZ is looking for digital position encoders to get
autotracking going with his dish.
DL1YMK is looking for a spare YD-1336 tube.
G0RUZ has a Hirschmann TH347 cavities
available. It is complete except for the HT connector and
square top cover, G1 and G2 are fed via MHV (high voltage BNC
connectors). It will work on either 432 or 1296 MHz with
minor modification. The cavity is totally complete and intact
and in very good condition. Please e-mail Conrad if you are
interested. He does not have any spare tubes but can probably
N7AM has a 432 MHZ KW Amp, using the GS23B for sale. It is in
an enclosed cabinet with metering, but no high voltage. The
grid and screen bias supplies are internal. It was built by
N7ART and never used, but tested. With 40 w drive, it gives 1
kW out. The amp weighs 30 lbs and is professional looking
with white front Panel and light blue sides and back. A spare
brand new GS23B is included along with instruction manual and
schematics. Jack is asking $US1,300 and can be reached by e-
mail at N7AM
VE3AX has a new, never used 15' Andrews dish with 0.34 f/D
crated, ready for pick-up. It comes in 2 pieces, which bolt
together. He also has heating pads, AZ rotator for above
(large prop pitch with cover) that has been converted and is
ready for use. A brand new, never used, Thompson Saginaw 36"
linear ball-drive actuator. Also 2 20' commercial tower
sections. Contact Peter at
The use of JT44 requires accurate time. The
following download is software that will automatically keep
your computer clock up to date by syncing your PC to the
Federal clocks in Boulder, CO. --
NIST Time Services
Tnx to AB2IO for this info. Also see F1EHN's report on his new moon
EME AROUND THE NET
-?-In the past month there has been
a lot of discussion about Linux and it's usefulness to the
EME community. If you at all interested you may want to
watch this thread.
-?_ JT44 and WSJT has been in the news.
There have been several contacts made, now, off the moon on
6 and 2 meters. Those that are using it have really enjoyed
the opportunity. I'm sure we will be seeing more information
in the weeks to come.
-?- Congratulations to all those who
made contacts via EME on 24 GHz this past month. It has been
a long time coming, but now that the door is open more and
more contacts are being made.
-?- In the last NL a fellow was
looking for info on 23 cm PA designs using the GS-35 tube.
RA1AW has information on his amp at the following website:
-?- Did you see the post from
DF6NA regarding the combining of 3456 amplifiers for 150
watts output! Yep, that's correct, he combined two 40 W
amps, upped the voltage to 12 V dc and was about to get 150
W out. For further details contact Rainer direct.
-?- Seattle, September 25th, 26th, and 27th, 2003 are the dates for the
Microwave Update 2003 conference. Start planning now. We
want to make this the best conference ever and picturesque
Seattle and the surrounding area some the most beautiful
country you'll ever see. Come early and bring the family
This has been one of those impossible months! Two
weekends ago we had the SETI League Conference at my College
(TCNJ). It was a great conference. I was only disappointed
that there were none of the regular EMEers in attendance.
N6TX did a presentation on the EME beacon the SETI League has
in operation on 1296.000. It is on when ever the moon is in
view and transmits a carrier for the 1st minute of ever 5
minute period followed by a CW ID. It is a great way to test
the sensitivity of your 23 cm system. Last weekend I chaired
the TCF2002, the Computer Festival I been involved with for
I am running a week behind in posting this NL and am off for
a business trip tomorrow. One way or another the NL will be
completed - Hi. There are no skeds this month, so I guess
running late is not as critical as normal.
As you can see there is lots going on! There has been
considerable discussion on the 20 m net about the Galileo
Satellite (Eur GPS) and the interference it could cause on
1296. This could be a real problem, but one we are not going
to solve this month.
DL4EBY, Klaus has corrected a bug in the HTML version of his
EME Directory and reminds everyone that they are welcome to
use it at:
DL4EBY.s EME Directory
K1RQG notes the annual change in 20 m EME net start time
during daylight savings. It will start at 1400 on Saturday
and immediately following VARO Net on Sunday.
DUBUS/REF Contest entries must be submitted no later than 20
May to (Patrick Magnin, F6HYE Marcorens, F-74140 BALLAISON
France) or e-mailed in ASCII format to: email@example.com.
Plans for the Prague EME2002 Conference are in their final
phase. I predict that this one will be the biggest ever! For
those of us going from NA, I have investigated the cost of
sending a bank transfer for the EME Conference registration.
Banks are charging about $US50 for this transaction. This
cost is not dependent on the amount of the cash transferred.
As this fee is a significant percentage of the registration
fee, I propose that other NA stations attending the
conference send a check to me for the amount of their
registration. I will lump all these funds together and send
one money transfer at my expense. If you are interested in
getting in on this offer, please contact me ASAP as time is
There is a lot more, but I have to stop for this month.
Please keep the info coming. I will probably not be on the
moon for the SW (18/19 May) as I am going to try to get to
Dayton. I hope to work you all off the moon soon. Don't miss
the upcoming dxpeditions.
73 Al - K2UYH
HB9Q's TOP LIST
Pos. Callsign Equipment Band Initials
1 DL9KR 432 768
2 K2UYH 28" Dish 8938 PA 432 649
3 DK3WG 16x27el LY, kW 432 385
4 SM2CEW 8 mtr dish and 1.5kW 432 382
5 SM3AKW 432 357
6 G3LTF 432 353
7 KU4F 14.6 meter dish 432 326
8 K0RZ 432 301
9 JA4BLC 20ft dish, 2-3CX800A7s 432 261
10 VK3UM 432 256
Pos. Callsign Equipment Band Initials
1 OE9ERC 8 m dish 1296 252
2 K2UYH 28" Dish 1296 197
3 G3LTF 1296 187
4 ZS6AXT 1296 177
5 HB9BBD 10m Pb 1296 175
6 WD5AGO 1296 170
6 SM3AKW 1296 170
7 G4CCH 5.4m dish, 500W 1296 164
8 SM6CKU 8m Dish 1296 158
9 EA6/DF5JJ 5.5m-Dish, 900W, QRT 1296 148
10 SM2CEW 8 mtr dish and 600W 1296 140
Pos. Callsign Equipment Band Initials
1 OE9ERC 8 m dish 2304 51
2 ZS6AXT 2304 31
3 JA4BLC 20ft dish, 0.6dB 2304 26
4 SM3AKW 2304 23
5 WA6PY 2.4 m dish 2304 10
6 ON5RR 3.7m dish, TX : 70W 2304 7
Pos. Callsign Equipment Band Initials
1 OE9ERC 8 m dish 5760 24
2 CT1DMK 5.6m dish - twt 35W 5760 15
3 ZS6AXT 5760 11
Pos. Callsign Equipment Band Initials
1 AA5C 10000 32
2 CT1DMK 5.6m dish - twt 50W 10000 16
3 W6HD 3.1 meter dish 10000 13
4 OE9ERC 8 m dish 10000 12
5 G4NNS 10000 7
6 PA0EHG 3 mtr dish 200 Watt 10000 6
7 WA6PY 2.4 m dish 10000 1
Netnotes by K1RQG
This information was obtained from:Scott, KD4LT