[hpsdr] penny/pennywhistle

[Graham / KE9H]

Geoff:

It sound like the RF amplifier transistors in PennyWhistle are
biasing up fine.  Recheck the wiring of, and in particular the
directions of the windings in T1 and T2.

--- Graham


On 11/5/2011 2:14 AM, Geoff wrote:
> ***** High Performance Software Defined Radio Discussion List *****
>
> Hi guys,
>
> 	I am presently trying to get my completed Rx/Tx setup going. On Tx I have a
> problem (or 2, dunno). My unmodified TAPR Penny is putting out the expected
> power level. Pennywhistle has been setup as per the manual. I am getting much
> lower power levels than i should. Most bands give me between 400 and 600 mW,
> 10m gives me 1.5W. 6m gives less. Penny whistle draws a maximum of about 2A
> on 10M. My aimless fiddling with gain and drive levels in powersdr gave some
> small improvements but nothing significant. Any attempt to run the PA
> calibration routines results in powersdr throwing a wobbly over invalid
> calculated gain. I am transmitting via Alex into a Bird 82C dummy load
> (overkill I know)
> 	Any ideas you can give me to get my HPSDR system up and running properly on
> Tx would be much appreciated by this frustrated numpty :-).
>
> 73 de Geoff vk2tfg.
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