[HBR] help on local oscillator
bignick at execpc.com
bignick at execpc.com
Sun Oct 25 17:15:41 EDT 2009
Would it be possible to post an image of the output wave?
When
you say "raspy" does that mean that the LO wave has spikes
or spurs
or fuzz or something different on it?
--KC9KEP
>
> Hi: All enjoy hearing about everyone's projects.
Working on a homebrew
> superhet, building it backward from audio
stage/audio preamp/plate
> detector/bfo so I can test
functionality as each stage is completed . I
> am now on local
oscillator, trying to use a glass envelope 6j5 for the
>
schematic in the 1965 ARRL handbook(page 97, diagram 5-14 c. I seem to be
> getting a really raspy l.o. signal. Think my power supply is
reasonably
> clean, wonder if anyone has some pointers for me.
Could it be ac from the
> filaments causing the problem? I'm new
to attempting receivers, interested
> in anyones suggestions to
correct this so I can proceeed to IF and mixer
> stages. 73 Bill
W9VC
>
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