<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML><HEAD>
<META content="text/html; charset=iso-8859-1" http-equiv=Content-Type>
<META name=GENERATOR content="MSHTML 8.00.6001.19222">
<STYLE></STYLE>
</HEAD>
<BODY bgColor=#ffffff>
<DIV><FONT size=2 face=Arial>Please let me add my two cents (or a quarter's)
worth. This HW-101 and power supply that David went through is now in my hands,
and it is truly a sweet rig. Other than my digitally synthesized rigs (Icom 706
MKII-G and the Kenwood TS-430S), this HW-101 is more stable than my
Hallicrafters SR-160, or even my Kenwood TS-830s hybrid. I can turn on the
HW-101 from a cold start, find a nice two-sided QSO on 20 meters, dial it in,
and maybe, after 10 or 15 minutes, just touch the VFO to move it 40 or 50 hertz
and it's there the rest of the day. </FONT></DIV>
<DIV><FONT size=2 face=Arial>I have David's notes on the way to the post office
today, and he will have them in a day or two and I'm sure he will share with the
list-serve anything he has failed to cover here. The new Jackson drive is
superb, smooth, solid, and a joy to use. </FONT></DIV>
<DIV><FONT size=2 face=Arial>Now this is the best part. For those of you
on the list-serve group that haven't heard this...this is the story of how I
acquired this super transceiver. David, W1EUJ, posted up that he had an
HW-101 that would like to trade, but not for ham gear or other electronics. He
was looking for something unique, and would be open to offers for two weeks,
after which he would decide who offered the most unique item or items.
Since I am in northwestern North Dakota, the nation's #1 hot spot for oil
exploration, drilling and production from the newly discovered Bakken
(pronounced bawk'-ken) formation, I offered a pint of Bakken crude oil. I was
amazed when David e-mailed me with his decision. I sent a bunch of 1.5 ounce
miniatures labeled "Williston Basin Energy Festival, September 2011" along with
a couple of bumper stickers, one saying "Rockin the Bakken" and the other
"Fracturing the Forks". The Three Forks/Sanish formation lies just 50 to
100 feet below the Bakken and is actually thicker and larger in size. I
also sent "Talkin the Bakken" a monthly oil patch publication, and of course I'd
be remiss if I didn't send the state's latest North Dakota Travel Guide.
</FONT></DIV>
<DIV><FONT size=2 face=Arial>In collaboration with David, I'm preparing to
produce a video of the HW-101 in operation for posting on You Tube, also telling
the story of how he graciously parted with his labor of love, to provide an old
man some real pleasure and enjoyment of operating this venerable piece of
gear. I cannot stress enough the fine job David did in the restoration of
this. It looks factory fresh (with a few tiny paint chips on the front rim) and
runs like a fine-oiled machine. Lot's of QSO's thusfar, even checking into the
Heathkit Net on a Sunday afternoon and telling "the story". Hats off to
you, David, and thank you. 73</FONT></DIV>
<DIV><FONT size=2 face=Arial></FONT> </DIV>
<DIV><FONT size=2 face=Arial>Bernie in ND</FONT></DIV>
<DIV><FONT size=2 face=Arial>WD0GMD</FONT></DIV>
<BLOCKQUOTE
style="BORDER-LEFT: #000000 2px solid; PADDING-LEFT: 5px; PADDING-RIGHT: 0px; MARGIN-LEFT: 5px; MARGIN-RIGHT: 0px">
<DIV style="FONT: 10pt arial">----- Original Message ----- </DIV>
<DIV
style="FONT: 10pt arial; BACKGROUND: #e4e4e4; font-color: black"><B>From:</B>
<A title=davegoncalves@gmail.com href="mailto:davegoncalves@gmail.com">David
Goncalves</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=ve2zhp@yahoo.ca
href="mailto:ve2zhp@yahoo.ca">Janusz Juryk</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Cc:</B> <A title=heath@puck.nether.net
href="mailto:heath@puck.nether.net">Heathnet</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Saturday, May 12, 2012 4:04
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> Re: [Heath] HW-101 VFO</DIV>
<DIV><BR></DIV>I think, aside from one thing, this is what I did. I invented
NOTHING here. My theory was that if the best minds in the hobby couldn't make
it work over the last 40 years, that I'd take it out and replace with a highly
filtered DDS VFO.
<DIV><BR></DIV>
<DIV>Refer to these: <A href="http://www.ultrawebb.com/OHP/SERVICE.htm"
target=_blank>http://www.ultrawebb.com/OHP/SERVICE.htm</A></DIV>
<DIV><A href="http://www.ultrawebb.com/OHP/NRWILLIAMSON.pdf"
target=_blank>http://www.ultrawebb.com/OHP/NRWILLIAMSON.pdf</A> </DIV>
<DIV><BR></DIV>
<DIV>0. Replace all resistors with new 1/2W 5% carbon film resistors (bought
good stuff from Digikey), except change R947 to 1k (per service bulletin
HW-101-2)</DIV>
<DIV>1. Check PN of coil in VFO, change it according to HW-101 service
bulletin HW-101-1 (mine did not need this)</DIV>
<DIV>2. Change C947 to 47pF NP0 per service bulletin HW-101-19 and C951 to a
10pF N750 per Williamson (I have perhaps ONE to spare).</DIV>
<DIV>3. Install a heavy wire per service bulletin HW-101-27.</DIV>
<DIV>4. Hot-glue C946 per service bulletin HW-101-42.</DIV>
<DIV>5. Verify that peaking of VFO coil is correct per service bulletin
HW-101-45 and N.R. Williamson.</DIV>
<DIV>6. If you find the VFO stops working in CW/USB on the upper end of bands,
change R947 back to 470 Ohms (per service bulletin HW-101-52).</DIV>
<DIV>6. Get the verniers working well. I ended up buying a new set from
Jackson Brothers (see here: <A
href="http://www.mainlinegroup.co.uk/jacksonbrothers/4511.htm"
target=_blank>http://www.mainlinegroup.co.uk/jacksonbrothers/4511.htm</A>) and
get Model 4511DAF. Machine the shaft to the length of your original set, and
install for that original 70's feel.</DIV>
<DIV>7. Make sure your supplies to the VFO are stable. Particularly, upsize
some of the resistors on the Power board (I'm getting to those notes soon!!).
Make sure to redo your HP-23.</DIV>
<DIV><BR></DIV>
<DIV>That is what I did, and it works very well. I really think you have to go
through the radio completely to really get everything stable and running
sweetly. One could argue that some of these changes have more impact than
others - and given the difficulty of finding N750 caps one might have to
evaluate that - but I found that all the rest was easy and just did them
all.</DIV>
<DIV><BR></DIV>
<DIV>Best of luck, </DIV>
<DIV><BR></DIV>
<DIV>David Goncalves</DIV>
<DIV><BR>
<DIV class=gmail_quote>On Thu, May 10, 2012 at 11:05 AM, Janusz Juryk <SPAN
dir=ltr><<A href="mailto:ve2zhp@yahoo.ca"
target=_blank>ve2zhp@yahoo.ca</A>></SPAN> wrote:<BR>
<BLOCKQUOTE
style="BORDER-LEFT: #ccc 1px solid; MARGIN: 0px 0px 0px 0.8ex; PADDING-LEFT: 1ex"
class=gmail_quote>
<DIV>
<DIV style="FONT-FAMILY: arial,helvetica,sans-serif; FONT-SIZE: 12pt">
<DIV>Greetings everyone,</DIV>
<DIV><BR></DIV>
<DIV>I'm rebuilding the VFO from a HW-101 and there are certain components
that need changing. The crystal diode is one and need to know what
equivalent could be used.</DIV>
<DIV><BR></DIV>
<DIV>Cheers</DIV>
<DIV><BR></DIV>
<DIV>Janusz
ve2zhp<BR></DIV></DIV></DIV><BR>_______________________________________________<BR>Heath
mailing list<BR><A href="mailto:Heath@puck.nether.net"
target=_blank>Heath@puck.nether.net</A><BR><A
href="https://puck.nether.net/mailman/listinfo/heath"
target=_blank>https://puck.nether.net/mailman/listinfo/heath</A><BR><BR></BLOCKQUOTE></DIV><BR><BR
clear=all>
<DIV><BR></DIV>-- <BR>David Goncalves<BR></DIV>
<P>
<HR>
<P></P>_______________________________________________<BR>Heath mailing
list<BR>Heath@puck.nether.net<BR>https://puck.nether.net/mailman/listinfo/heath<BR></BLOCKQUOTE></BODY></HTML>