[hpsdr] Penelope output power uncontrolled

[AA8K73 GMail]

My TAPR-built original Penelope had the transformer reversed.
I soldered the transformer in the correct orientation.

< 
http://openhpsdr.org/wiki/index.php?title=Penelope_-_Trouble_Shooting 
 >


But, my power output from Penelope is 0.2 watts.  See:
< 
http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/2019-April/099314.html 
 >


I connected Penelope to a dummy load and used a [100 MHz] 
oscilloscope to measure the RF voltage across the dummy load. 
With the resistance of the dummy load, I could calculate the power.


Do you have a way to measure the output power?


73,

Mike - AA8K


On 8/7/19 9:17 AM, Tokio Endo wrote:
> ***** High Performance Software Defined Radio Discussion List *****
> 
> 
> Hello,
> 
> Today I changed the orientation of Transformer T2, the outout 
> transformer of Penelope, like Pennylane. This is a well known 
> fix for T2 reversal reported years ago.
> 
> After this change, the output power of Penelop on, e.g., 40 
> meters band jumped over 600mW on the forward power of PowerSDR 
> V.3.4.9. The power seems to be uncontrollable, but this is not 
> identified by a power meter, but only on the screen of PowerSDR.
> 
> The firmware version of Penelope is 1.8, and before doing this 
> T2 orientation change, thais only yesterday, my Penelope worked 
> fine except 6 meters band’s low power, only 100mW.
> 
> I’m afraid this problem might be caused my soldering work on 
> Penelope which damages some parts.
> 
> Any comments would be very much appreciated.
> 
> 73,
> Tokio
> ja1cca
> 
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