[hpsdr] PennyWhistle MOSFET's

[Riho B., ES7AAZ]

Helmut, thanks for all tips and suggestions. Sure, I will take a look into
it what's going on here. Fortunately I have a Pinocchio as well for
 measurements and troubleshooting. Yes, the PowerSDR shows the signal how
it's going out from DSP.  In Duplex mode it shows how the signal going out
from the radio.

--
*73,*
*Riho ES7AAZ*


Kontakt Helmut Oeller (<dc6ny at gmx.de>) kirjutas kuupäeval K, 10. november
2021 kell 17:07:

> Riho, don't give up! Penelope and Pennylane were (are) fine boards.
> Search for the reason. Check as already suggested signal quality at the
> input of amp U6 (OPA2674), check 12V supply voltage for ripple etc. and
> output match (T2). When I recall correctly PowerSDR shows the base-band
> signal in TX mode and not the real output signal. Hence I would
> recommend to use an external analyzer to evaluate the RF signal.
>
> 73, DC6NY
>
>
>
>
>
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