Final Neutralization in HW-101

Mark Graalman WB8JKR wb8jkr at JUNO.COM
Sat Dec 18 19:51:57 EST 2004


  Doug,

 Did you use a known good RF probe on the VTVM?

Mark  WB8JKR

On Sat, 18 Dec 2004 16:40:21 -0800 "Davies, Doug A FOR:EX"
<Doug.Davies at GEMS3.GOV.BC.CA> writes:
> As per suggestions and an emailed procedure produced by Heath, I
> tried
> neutralizing the 6146's in my HW-101 refurbishing project with the
> plate and
> screen voltages disconnected.  I could not get any indication on the
> VTVM
> connected to the antenna jack with these wires disconnected.  I then
> hooked
> the plate and screen wires back up and, following the procedure in
> the
> original manual, attempted to perform the neutralization.  It
> appears to
> have worked as per the manual but it sure was a pain in the butt
> fiddling
> with the neutralizing cap. to get the plate current minimum and the
> RF
> output maximum at the same point on the FINAL tune knob.
>
> Question:  Any ideas on why the alternate procedure did not work?
>
> Doug  VA7DD
>
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