[Linrad] Re: Map65 reports "No Rx data"

[jeff millar <gmail.com; wa1hco@xxxxxxxxxxxxxxxx>]

Joe and Leif...

Thanks for your help, so far...

I have compiled three versions of linrad
    - linrad.exe with char netsend_rx_multi_group[]={"127.0.0.1"};  // 
localhost address
    - xlinrad      with char netsend_rx_multi_group[]={"192.168.1.43"}; 
// laptop address
    - xlinrad      with default netsend_rx_multi_group[] 
={"239.255.0.00"}  //multicast address

Running xlinrad_localhost.exe on my XP laptop with MAP65 produces
   - noise about 60 dB, intermittent "No Rx data"

running xlinrad_default produces streaming packets at the XP laptop as 
shown on WinDump
    - ... 192.168.1.40:xxxxx > 239.255.0.0:50004 UDP length 1419
but MAP65 reports noise 0.0 db and "No Rx data"

Running xlinrad_laptop shows no streaming packets at either linux or XP 
machine

any ideas?

BTW...linrad.exe appears to run under wine...should I continue trying that?

My goal is to get my laptop PC running linrad and Map65 for the 
September VHF contest and just track the moon for the duration.

thanks,

jeff, wa1hco


Joe Taylor wrote:
> Hi Jeff, Leif, and all,
>
> Just in case it is not clear: Leif's response was directed 
> to users who wish to run Linrad and MAP65 on the same 
> computer.  (IP address 127.0.0.1 is the code used for 
> "localhost", i.e., the computer on which the program is 
> running.)  You can also set the address field to a specific 
> IP address, for example:
>
>    char netsend_rx_multi_group[]={"128.112.86.191"};
>
> to send Linrad data to MAP65 running on a machine at that IP 
> address.
>
> 	-- 73, Joe, K1JT
>
> Leif Asbrink wrote:
>   
>> Hi Jeff,
>>
>> I did not see anyone answering this:
>>
>>
>>     
>>> Does it make any difference how the linrad ffts get configured? Does 
>>> linrad configuration affect the format of multicast packets? Does Map65 
>>> care what format Linrad uses for multicast packets?
>>>       
>> You have to set "first backward FFT version" to 1 in order to
>> select the 16 bit format for the second time function.
>> In case you select 0 the format would be 32 bit floating point 
>> and that is not what MAP65 looks for.
>>
>> To get unicast just change
>> char netsend_rx_multi_group[]={"239.255.0.00"};
>> (near line 80 in network.c) to this:
>> char netsend_rx_multi_group[]={"127.0.0.1"};
>>
>> Then re-compile (make linrad or make xlinrad)
>>
>> In case it is more convenient to use MAP65 under Windows,
>> use make linrad.exe under Ubuntu or download mingw32 and nasm
>> so you can compile Linrad under Windows.
>>
>> 73
>>
>> Leif / SM5BSZ
>>     
>
> >
>
>   


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