[hpsdr] norton amps

[Robert McGwier]

Francis:

Can you make linearity measurements with a two tone test?


Bob
N4HY


FRANCIS CARCIA wrote:
>
> ------------------------------------------------------------------------
>
> Dallas Lankford gave me some Norton circuits that I tried with a pair 
> of 2N5109s at 60 ma bias each. The 3 dB mds was better than -140 dBM. 
> The 8 KHz. 40.455 MHz crystal filter after it fell apart before the 
> the amplifier did. I used type 43 2 hole cores. gfz
> ------------------------------------------------------------------------

-- 
AMSAT VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats,
NJQRP/AMQRP, QRP ARCI, QCWA, FRC. ARRL SDR Wrk Grp Chairman
"An expert is a man who has made all the mistakes which can be
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