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

[Joe Taylor <Princeton.EDU; joe@xxxxxxxxxxxxxxxx>]

Hi Ed,

The localhost IP address 127.0.0.1 is part of the Internet Protocol; it 
is not special to Windows, Linux, or any other operating system.

MAP65 can be used as an input device to Linrad, but not (yet?) as an 
input device to the Linrad+MAP65 combination.  The reason is that MAP65 
wants data at a 96 kHz sample rate.

	-- Joe, K1JT

Edward Cole wrote:
> Joe, etal:
> 
> Currently, I am just following the discussion but have not yet 
> installed Linux.  I have Linrad for windows operating and MAP25, but 
> wish to use them both on the same computer using input from the 
> SDR-IQ.  Is localhost pertinent to Linux or is it available running 
> win-XP?  Last I heard MAP25 was not yet set up for use with the 
> SDR-IQ (something about the sample rate).  I am using a duoCore-2 
> 2.33 GHz Dell with 2GB memory.
> 
> I can run with my soundcard with output from the FT-847 but that 
> offers no advantage over JT65 as it is limited to 2500-KHz bw.
> 
> 73 Ed - KL7UW
> 
> At 06:48 AM 8/16/2008, you 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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