[hpsdr] Janus/Ozy "Line In" Adjustment

[Bob Fish]

Hi Bill,

 I am not sure what difficulties Joe was having, but when I was trying 
to set up my SDR-1K and Janus/ Ozy combo for digital modes. I tried to 
run my transmit audio (from my computer sound card output) to the "line 
in" jack on Janus. In other words, the 3rd jack down from the top of the 
card. I never could get it to work.
To troubleshoot the problem, I moved the plug down to the 4th jack down 
(Mic audio/PTT) and it works. Since I am lazy, I just stopped 
troubleshooting right there. When I want to operate digital modes I just 
swap out the mic audio cable and plug in sound card output cable on the 
mic/ptt jack

Any idea why that "line in" jack isn't working for me? Are there jumpers 
to turn on that jack or does it have to be switched on in software 
somewhere? Am I trying to use the "line in" jack for something it wasn't 
intended to do? It would be nice to be able to leave both plugs in the 
board all the time. I hope this makes sense.

Thanks in Advance,

Bob  K6GGO


> ***** High Performance Software Defined Radio Discussion List *****
>
> Not sure what you're looking for  .. are you trying to adjust the gain 
> of the AK5394A on Janus (top connector on the board)?  Other than the 
> jumpers to bypass the input attenuator I don't believe there's any 
> provision for adjusting that gain -- I don't think the AK5394 has a 
> programmable gain stage in it at all.
>
> Regards,
>
> Bill (kd5tfd)
>
> At 01:37 PM 8/27/2008, joetorrey at cablelynx.com wrote:
>> ***** High Performance Software Defined Radio Discussion List *****
>>
>> Does anyone know if there is a way to adjust the "line in" variable 
>> under
>> the audio set-up tab in PowerSDR? I tried using the "unsupported sound
>> card" selection; this did open the selection window for the "line in"
>> adjustment. I did try different settings but did not notice any variance
>> with the noise floor. I had the idea of fine tuning the noise level if
>> possible.
>>
>> Thanks,
>> Joe
>> WD5Y
>
>
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