[hpsdr] PowerSDR v1.19.3.3.diversity19 (K5SO 6MAR2011)

[Joe Martin K5SO]

Kurt and all,

You are correct that the 20 dB Boost checkbox is not available in LINE  
IN mode.  The 20 dB BOOST check box is for mic input only, not the  
LINE IN path.

Now, that's no problem at all as you can easily set your LINE IN path  
to provide 20 dB boost if you wish.

Do this:

1)  In Setup > Transmit > in Mic box set Max: 30 and Min: 0, select  
LINE IN

This will set the range of your MIC slider control on the front panel  
for a minimum of 0 dB (no gain, no attenuation) and the maximum of the  
slider to 30 dB gain.

2)  Set the front panel slider to indicate 20 (20 dB gain).

3)  Now if you put a 2 V pk-pk audio signal (0.707 V RMS) at 1 KHz on  
pin 2 of the DB-25 connector on Penny, you will obtain full rf power  
out to the output level at which you have your Drive setting set.

To answer your question of how I check out the LINE IN functionality,  
I use an oscilloscope to monitor the audio level at pin 2 of the DB-25  
connector on Penny and simultaneously monitor the rf power output of  
Penny.

This should fix you up.

 From Tokio's message to Phil today it appears he, too, is having some  
trouble understanding how things are now set up.  When using Metis,  
PowerSDR does NOT use any I2C commands from initozy11.bat...in fact,  
there are now no I2C commands in that file any more.  Tokio, if you  
read this, please refer to my posting yesterday explaining how this  
work with LINE IN in the latest software.  If you need more  
explanation contact me and I'll be happy to explain further for you.

Let me know how you fare, Kurt.

73,  Joe K5SO



On Mar 10, 2011, at 8:09 AM, Kurt Tausch wrote:

> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi Joe, all,
>
> thank you for your detailed description.
>
> Everysthing is true, when I use diversity18 and have the 20dB Mic  
> Boost ( Mic Preamp Gain ) aktivatet. The Mic slider in the front  
> panel then inicates 30db , Penelope provids full RF output. The  
> oudio input level aplied to Penelope, left chanel input is 0dBu  /  
> 1khz . (0,77V RMS)
>
> When I use diversity19, the option  20dB Mic Boost is not available  
> and   RF output power is ~ 20bB to low. The Mic slider in the front  
> peanel then indicates 10dB. Oudio Input level is 0dBu  /  1khz.
>
> How did you check out the line in functionality for diversity19 ,   
> Joe ?   What is the oudio input level required for full RF Power  
> output ?
>
> 73" Kurt , DL9SM
>
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