hw-101 cw

[Ed Curran WA9YYF]

Hi,

I had a similar problem that drove me nuts. I was not getting the side tone
all the time and therefore it would not key reliably. I too found changing
tubes helped, but only for a short while. I found my rig did not like GE
tubes in that position as when I got an nos JAN tube it worked fine.

Also check R328, it should be 470k ohms. It might have aged and gone up in
value.  You seem to be able to replace it with anything you have handy, I
have been told that as low as 200k will work just fine.

I also changed D202 from a 15 volt zener to a 12 volt zener.

Good luck getting it going.

73, Ed

----------
> From: n7kbj <n7kbj at ONEIMAGE.COM>
> To: HEATH at LISTSERV.TEMPE.GOV
> Subject: hw-101 cw
> Date: Thursday, December 16, 1999 9:47 PM
>
> Hi all - I'm looking for help with my hw-101 - getting it key
consistently
> on cw.  when I key it, I always get the tone in the speaker.  however the
> relays only kick over to transmit slowly (after about 5 or 6 dots) or not
at
> all.  Swapping out V-15 seems to cure the problem, but only for a
> very short while - I can't believe it eats tubes like that.  If I do get
it
> to key, it drops out after only a fraction of a second - about the length
of
> a short dash.
> Has anyone has similiar problems with their hw-101 or is this a quirk
> special to mine?  I've got thru the cw circuit a few times without
finding
> anything obviously wrong, so its time to really dig
> into it this go-around.
> Thanks in advance!
> Jim - N7KBJ
> email:  n7kbj at oneimage.com
>
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