[hpsdr] HPSDR Question

[Graham / KE9H]

Dave:
>  I think I have a RF feedback issue.
>
> Using my HP431C with a 40db 100 watt attenuator I can confirm over 100 watts
> from my Penelope/Penny/EB63 string.
>   
What kind of drive signal?  The single tone "tune" signal?
> If I connect to my 80M antenna through a Bird with a 100 watt slug My PEP is
> around 14 watts.
>   
Do you have the special Peak Reading Bird? or the normal Bird Model 43, 
which reads average, not PEP?
What do you have that reads PEP?  That requires a special peak reading 
watt meter, or using a more
common piece of test equipment, put a calibrated oscilloscope across the 
output of the transmitter

What kind of drive signal are you measuring? Tune?  Two tone test 
signal?   Voice?

What does the Bird say if you use the "Tune" function with the drive 
control set to the same level setting as you used
to get the 100 Watt CW output into the attenuator/load?

What does the Bird say if you put it in between the transmitter and the 
40 dB attenuator/HP431C.
Do the Bird and the HP setup agree?
> The antenna measured SWR is less than 1.3 so I would not expect this to be
> an issue.
>   
Certainly not a big issue.
> What is the best board stack starting at the LPU side? Right now I run
> Mercury/Ozy/Penelope/Excalibar/Antenna switch.
>   
I am not aware of any board order issues, with the newer versions of 
software loaded into
the cards.  Card position sensitivity was mostly any issue with some of 
the early software
loads.


--- Graham / KE9H

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