[hpsdr] Penny Whistle Bias

John radio at mediacombb.net
Sat Dec 22 16:07:28 PST 2012


Powed my TAPR Penny Whistle kit up today for the first time.  According 
to the manual the PA bias should be about 20 mA.  Mine is only 8.23 mA.

Is that in the normal range or should I begin looking for an assembly 
error?  Both R11 and R17 adjust, but it is hard to set them to an exact 
balance.

My readings are:
   Bias   8.23 mA
   R17 set (only)  456.1 mA
   R11 set 905.4 mA

73,

John  WoGN






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