[Boatanchors] HW-101 VFO problem

[Boatanchor at alliedinformation.com]

Alex:

Good idea. The only problem is I don't have the complete manual. All I have 
is the last part of the manual giving me the initial test and general 
trouble shooting guides along with the schematics. I have been looking for 
a reasonably priced HW-101 manual, so if you know of any let me know.

Thanks.

Matt

At 04:28 PM 5/24/2005, AI2Q wrote:
>As an ex-Heathkit employee and service tech, I suggest you turn off the 
>power, grab the manual, and start (step-by-step with assembly manual in 
>hand) looking for wiring errors.
>
>Vy 73, AI2Q, Alex in Maine
>http://users.adelphia.net/~alexmm/ai2q.htm
>
>----- Original Message ----- From: Boatanchor at alliedinformation.com
>To: boatanchors at mailman.qth.net
>Sent: Tuesday, May 24, 2005 4:08 PM
>Subject: [Boatanchors] HW-101 VFO problem
>
>
>I am working on an HW-101 with a strange problem.
>
>I have aligned the receiver and it works fine ok. I can hear signals where
>they are supposed to be.
>
>However, when I try and transmit, I get an output carrier WAY out of range
>of where the VFO is set. Even if I set the rig in TUNE mode and change the
>VFO while its sending out the carrier, the output frequency never changes.
>
>First, I set my VFO to 14.295. I hear a signal generated by my signal
>generator at 14.295 (give or take a few cycles). Then I move the mode
>switch to Tune. My frequency counter reports the output at 14.433. It stays
>stable at that frequency even if I change the VFO.
>
>Then, I tune the VFO to 7.295. I hear a signal generated by my signal
>generator at 7.295 (give or take a few cycles). Then I move the mode switch
>to Tune. My frequency counter reports the output at 14.060. After a few
>seconds, the frequency counter starts climbing back down closer to my VFO
>frequency. When it gets close, the circuit breaker on my power supply
>trips. Huh?
>
>15 meters seems to be pretty close to where the VFO is, but no exactly. I
>get NO output on 80 or 10 meters at all, but that may be a separate problem.
>
>I have also just noticed these result are achieved with the bottom cover
>place over the band switch removed. If I put it back on, I get no output
>from 40 meters. put it on, it works fine.
>
>Why is the VFO working on receive but so far off on transmit? Any other
>comments or places to test and try?
>
>Thanks.
>
>Matt, KB8WFH
>
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>$$ For vintage radio info, see the HCI web site $$
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