HW-16 XMTR Alignment glich

[Edward B Richards]

Hi Dennis;

The object is to disconnect the power amplifier so it puts out nothing.
What comes out is then being capacity coupled from grid to plate; the
thing you want to get rid of. You may need a more sensitive device like a
RF probe or oscilloscope. Once you see the output, adjust the
neutralizing capacitor for minimum output. You should be able to almost
eliminate it completely. Sometimes you can use the S meter on another
receiver. Good luck.

73 from Ed Richards K6UUZ
Simi Valley, CA. Home of Air 
Force 1 pavallion

On Sat, 3 Mar 2007 20:31:47 -0700 Dennis Klipa <klipad at MINDNET.ORG>
writes:
> The HW-16 I obtained is working reasonably well.  I have recapped it 
> and
> cleaned it up.  In the process of aligning the transmitter section I 
> got
> the to point where I am too adjust the neutralizing capacitor, As
> instructed I shunted R16, disconnected the B+ to V9 at C203, and
> disconnected the lead from R13 (power level control) at pin 2 of V9. 
>  It
> then says, with the unit powered up and on 21.0 band, to key up and 
> adjust
> the Tune control for maximum meter reading in the REL PWR setting.  
> When I
> do that I get no meter reading at all.
> 
> Any ideas about what might be the problem?  From the schematic, I am 
> not
> surprised that there is no meter reading when the B+ is removed.  So 
> I am
> confused by this step in the procedure.
> 
> Thanks in advance for any ideas.
> 
> Dennis Klipa, N8ERF
> 
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