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AW: Re. : AW: Re. : AW: [linrad] RE: Linrad and the microwaves
- Subject: AW: Re. : AW: Re. : AW: [linrad] RE: Linrad and the microwaves
- Date: Tue, 28 Jan 2003 10:52:35 +0100
no, it is not only present on 23cm, but on all bands.
Let me think: On terrestrial noise there is a larger amplitude componenent than on space noise. The amplitude component makes filters ringing. CW signs become distorted by this. Can this be what I feel?
> -----Ursprüngliche Nachricht-----
> Von: DEHAYS Dominique [SMTP:Dominique.DEHAYS@xxxxxxx]
> Gesendet am: Dienstag, 28. Januar 2003 10:35
> An: linrad@xxxxxxxxxxxxxxxxxxxxxx
> Betreff: Re. : AW: Re. : AW: [linrad] RE: Linrad and the microwaves
> this is not what I mean. It is not noise temperature what I mean. I mean
> that the noise is not noise. Just an example, it may give you an
> impression what I mean: Have a look at your S-Meter at ground noise, it is
> toggling much more than on the noise from space. There is AM on the ground
> noise. Something like this is what I mean.
> Hi Guenter ,
> maybe yes.... We have another problem on 23cm and 13cm , from my previous
> QTH I suffered from a very severe phase noise problem from nearby GSM
> towers , on the 23cm terrestrial system I even had to throw away my DJ9BV
> preamp ( first version with ATF101) because my 23cm system was nothing
> else than unusable when my antenna was turned to a GSM tower ,as I had 5
> towers within less than one km radius... I put a special highly selective
> preamp wich solved the problem . So maybe the noise we get on 23cm
> terrestrial is not only ground noise .... BTW computers are sometimes
> annoying me , even on 3cm!
> 73's Dom/F6DRO