From hbr@mailman.qth.net  Mon Jul  1 22:45:27 2002
From: hbr@mailman.qth.net (Sandy and Kees Talen)
Date: Mon, 1 Jul 2002 16:45:27 -0500
Subject: [HBR] CD update ....July  1 2002
Message-ID: <20020701.164531.-150105.2.windy10605@juno.com>

About 1/3 of the base document (360 pages) has been 
scanned into PDF files (I have the rest on the disk), the 
labels have been designed (look almost professional), 
the blank CDs have been purchased, etc.

If you have any pictures/data you would like to add 
....HBR pictures, other homebrew pictures, etc please 
send them on and/or tell me they are coming (photos 
or jpg files). There is plenty of room on a 700MB CD.

Have a great 4th of July.

73s  Kees K5BCQ 

From hbr@mailman.qth.net  Sat Jul 13 17:22:46 2002
From: hbr@mailman.qth.net (Sandy and Kees Talen)
Date: Sat, 13 Jul 2002 11:22:46 -0500
Subject: [HBR] Some info on coil "Q" ..."reflector activity filler"
Message-ID: <20020713.112256.-237699.3.windy10605@juno.com>

Here is some experimentation with coil Q on one of the other reflectors. 
It started with some comments about old receivers using DCC 
(double cotton covered) wire and how that attained higher "Q" but it
had to be sealed, etc. You might be interested in it. All the comments
are mine.

73s  Kees K5BCQ

-------------------------------------------------------------------------
-------
I agree that paraffin is an excellent way to reduce moisture intrusion,
it's easy to use, and the "dipped in hot paraffin" would reduce existing 
moisture content. Dipping a coil would also allow the sealant to flow 
into all the spaces ....much better than painting/smearing/globing on a 
sealant. Many of the older multi- layer coils used cotton served Litz
wire 
and you HAD to "seal off" the entire coil. 
 
On the use of enameled wire, I think its fine for larger inductances, 
however the enameled wire allows very close adjacent spacing which 
increases the turn-to-turn capacitance and lowers Q. For single layer 
coils, if you "space wind" the turns tightly with another wire or string
in between and remove it later, you don't have the problem. You do 
have the problem of really having to stabilize the separated turns with
paraffin, Duco cement, etc. Wonder what thicker insulation on the wire 
would do ?
 
On multi- layer coils wound with enameled wire a basket weave pattern 
reduces turn-to-turn and layer-to-layer capacitance and enameled wire
allows a lot of wire in a small volume. Q can be increased by using 
multi strands of smaller wire (like Litz wire ....skin effect) at
frequencies
below about 3Mhz. It's a substantial improvement in Q to use two strands 
of #39 AWG vs one strand of  #36 AWG, or better yet .....six strands if 
#42 AWG vs one strand of #36 AWG. All of those wire combinations 
have the same current handling capability ....but substantially different
Qs. Many (small) higher quality IF transformers are wound with two 
strands. Larger, older ones use Litz wire, are dipped, etc. 
 
One other hint from the youthful past ...if you ever catch the hot
paraffin
on fire do NOT try to put out the flame with water. 
 
-------------------------------------------------------------------------
--------
 
 Here is some data on two coils:

 - 1-1/4" coil form (amber pill bottle)
 - both coils 13.8uH +/- 0.1uH
 - both coils #28 AWG wire
 - coil "A" 16 turns are adjacent
 - coil "B" 20 turns are on .025" centers +/- (spacer was removed)
 - both coils, no adhesives/coatings to hold the turns in place

 At 3.4MHz  ..... coil "A"  Q=107, coil "B"  Q=175

Granted, these are unloaded Q measurements on a Boonton 260-A and 
loaded Q will be less, however the improvement will be carried over
and the "trend" is there.
 
What does this mean for the signal (and, again, loaded Q will be less
dramatic) .....roughly:
 
Sensitivity ...the Boonton uses a 20mVAC "e" signal and measures "E" 
with a very sensitive voltmeter, so a Q of "107" means "E" is 2.14VAC. 
And for a "175" Q, "E" is 3.5VAC ....higher sensitivity.
 
Selectivity ....Q is also the -3db voltage BW divided into the frequency
(Q = Fo/-3dbBW  ...or -3dbBW = Fo/Q). For a Q of "107" the -3dbBW 
is 31.8Khz. For a Q of "175" the -3dbBW is 19.4Khz .....better
selectivity.
 
By the way, coating the "A" coil with "CG Clear Ice" fingernail polish
drops the Q to "97".
 
-------------------------------------------------------------------------
-----

Coil dope........
 
I tried some E6000 Craft Glue on the coil with a Q of 
"175" ...absolutely no change in Q as you put the material 
on, as it dries, or 12 hrs later, even for a very heavy 
application of glue. I think it's some kind of silicone 
based product .....waterproof, clear, and remains flexible.
 
My wife didn't even tell me she had some "real good coil
dope" material in her crafts pile.
 

From hbr@mailman.qth.net  Sat Jul 13 17:51:16 2002
From: hbr@mailman.qth.net (Jeff Noel)
Date: Sat, 13 Jul 2002 12:51:16 -0400
Subject: [HBR] Fw: COIL GLUE
Message-ID: <001b01c22a8d$81e7c280$e32f2c42@hppav>

----- Original Message ----- 
From: "Jeff Noel" <k4zku@erols.com>
To: "HBR" <hbr@qth.net>
Sent: Saturday, July 13, 2002 12:47 PM
Subject: COIL GLUE


> What is the trade name on this E6000 Craft Glue?
> Thanks,
> 
> Jeff
> 
> k4zku@erols.com
> 


From hbr@mailman.qth.net  Sat Jul 13 18:42:47 2002
From: hbr@mailman.qth.net (Sandy and Kees Talen)
Date: Sat, 13 Jul 2002 12:42:47 -0500
Subject: Fw: [HBR] Fw: COIL GLUE
Message-ID: <20020713.124252.-237699.4.windy10605@juno.com>

It just says "E6000" on the front in large letters. Craft and 
sewing stores have it.

Kees

--------- Forwarded message ----------
> What is the trade name on this E6000 Craft Glue?
> Thanks,
> 
> Jeff
> 
> k4zku@erols.com
> 

************************************
Visit the HBR Receiver Web Site with over 100 pictures of receivers and 
construction notes...... via http://www.qsl.net/k5bcq/ 

Retrieve reflector archived data via
http://mailman.qth.net/mailman/listinfo/hbr

From hbr@mailman.qth.net  Sat Jul 13 23:32:47 2002
From: hbr@mailman.qth.net (Sandy and Kees Talen)
Date: Sat, 13 Jul 2002 17:32:47 -0500
Subject: [HBR] Fw: HBR-16  .........another one found
Message-ID: <20020713.173402.-249263.6.windy10605@juno.com>

Garey said it was OK to pass to the reflector. Just goes to show
that they are out there ...and sometimes real deals can be made.

Garey will also be joining the reflector.

73s  Kees K5BCQ

  
--------- Forwarded message ----------
From: "Garey Barrell" <k4oah@mindspring.com>
To: <glowbugs@piobaire.mines.uidaho.edu>,
         "Sandy and Kees Talen" <windy10605@juno.com>
Date: Sat, 13 Jul 2002 14:18:31 -0400
Subject: HBR-16
Message-ID: <00a101c22a99$b1751b40$6401a8c0@hp>
References: <20020527.113910.-391085.6.windy10605@juno.com>

Kees -

Well I finally fell into one today....

I purchased an HBR-16 at a local hamfest today.  It appears the
original builder, (unknown,) took the QST article to the parts store.
All the major components, transformers, tuning cap, are the specified
manufacturers and part numbers.  Of course, the dial is an Eddystone
898 .....   It has the 1700 kc coils wound on polystyrene tubing
mounted on ceramic standoffs and link coupled.  The 3500 (HC-6) and
1700 (FT-243) kc crystals are even both present.  Oh, coils for 5
bands on polystyrene coil forms with air variables in the tops.  The
knobs (Collins style, all but one without the skirt) even match!

The bad news is that the chassis metal work isn't so hot, and there is
some rust around the base of the power transformer.  But the power
transformer is a Triad anyway!  :-)    The clear plastic dial cover is
cracked almost all the way across, but that shouldn't be too big a
problem.

I drooled over these articles back in the late 50's and have spent
quite a bit of time perusing your HRB website over the last year or
so.  Probably be spending a bit more time there now.   I passed by the
receiver Bob, WB4MNF bought at Shelby last year.  Even looked inside
it....

Anyway, I asked the guy "how much"....   Do you have any idea how fast
I can pull out a $5 bill???

73, Garey - K4OAH
Atlanta

From hbr@mailman.qth.net  Sun Jul 14 12:42:51 2002
From: hbr@mailman.qth.net (Jeff Noel)
Date: Sun, 14 Jul 2002 07:42:51 -0400
Subject: [HBR] Fw: HBR-16  .........another one found
References: <20020713.173402.-249263.6.windy10605@juno.com>
Message-ID: <002001c22b2b$96d62580$cb2c2c42@hppav>

That is a great find! I just wonder how many HBR's were built?

Jeff


From hbr@mailman.qth.net  Mon Jul 15 22:58:05 2002
From: hbr@mailman.qth.net (Sandy and Kees Talen)
Date: Mon, 15 Jul 2002 16:58:05 -0500
Subject: [HBR] more pictures
Message-ID: <20020715.165811.-129987.0.windy10605@juno.com>

Pictures have been uploaded to the web site showing
Garey Barrell's (K4OAH) new $5 acquisition.

other subject........
Does the Bill McKay receiver top view at the top of
the HBR web site look "yellow" to you ??

73s  Kees K5BCQ

From hbr@mailman.qth.net  Mon Jul 15 23:16:18 2002
From: hbr@mailman.qth.net (Dan Merz)
Date: Mon, 15 Jul 2002 15:16:18 -0700
Subject: [HBR] more pictures
References: <20020715.165811.-129987.0.windy10605@juno.com>
Message-ID: <3D3349B2.FF689AF3@3-cities.com>

It doesn't look yellow to me.  Dan

Sandy and Kees Talen wrote:

> Pictures have been uploaded to the web site showing
> Garey Barrell's (K4OAH) new $5 acquisition.
>
> other subject........
> Does the Bill McKay receiver top view at the top of
> the HBR web site look "yellow" to you ??
>
> 73s  Kees K5BCQ
> ************************************
> Visit the HBR Receiver Web Site with over 100 pictures of receivers and
> construction notes...... via http://www.qsl.net/k5bcq/
>
> Retrieve reflector archived data via http://mailman.qth.net/mailman/listinfo/hbr


From hbr@mailman.qth.net  Mon Jul 15 23:52:14 2002
From: hbr@mailman.qth.net (Sandy and Kees Talen)
Date: Mon, 15 Jul 2002 17:52:14 -0500
Subject: [HBR] more pictures
Message-ID: <20020715.182619.-129987.4.windy10605@juno.com>

Thanks, Dan. The top one looks yellowish on this machine.
The other one (and the rest) looks like a crisp black and white
picture. Maybe I need new glasses.

Kees 

From hbr@mailman.qth.net  Tue Jul 16 18:14:06 2002
From: hbr@mailman.qth.net (Helmut Usbeck)
Date: Tue, 16 Jul 2002 13:14:06 -0400
Subject: [HBR] OT-article needed
Message-ID: <20020716171423.TRCG16483.out016.verizon.net@gemini>

Does anyone have the original article of a 811 linear amp called=
 the 
"Tiny Tim Linear" which was written up in 73 Magazine?  Copy OK.
Thanks.
-- 
Helmut Usbeck...WB2ADT,vze2gmp4@verizon.net on 16/07/2002



From hbr@mailman.qth.net  Tue Jul 16 18:48:12 2002
From: hbr@mailman.qth.net (hbr@mailman.qth.net)
Date: Tue, 16 Jul 2002 12:48:12 -0500
Subject: [HBR] OT-article needed
References: <20020716171423.TRCG16483.out016.verizon.net@gemini>
Message-ID: <3D345C5C.311F89AE@attbi.com>

Helmut,

Tiny Tim was in the August 1971 issue of 73.  I have that magazine.  I
suppose I would not get into much trouble scanning it and sending a
copy.

I built the Tiny Tim in 1975 and sold it about ten years later.  I used
it on RTTY driven by a Hallicrafters SR-150.  I drove the socks off it
for 300 watts output to an antenna tuner that was connected with open
wire line to an 8JK wire beam up at 50 feet.  That setup was a real
performer on 20 meter RTTY.

Ever since I sold the little amp I have been collecting parts to build
another one.  I have most everything needed except the motivation to
actually build it.  I have two other amps that are more capable.

At one point I was toying with the idea of upgrading the Tiny Tim design
by using 572Bs in place of the 811s.  The 572Bs would fit physically but
I suspect the tank components might not handle the additional power.

Regards,
Frank Kamp
K5DKZ


Helmut Usbeck wrote:
> 
> Does anyone have the original article of a 811 linear amp called the
> "Tiny Tim Linear" which was written up in 73 Magazine?  Copy OK.
> Thanks.
> --
> Helmut Usbeck...WB2ADT,vze2gmp4@verizon.net on 16/07/2002
> 
> ************************************
> Visit the HBR Receiver Web Site with over 100 pictures of receivers and
> construction notes...... via http://www.qsl.net/k5bcq/
> 
> Retrieve reflector archived data via http://mailman.qth.net/mailman/listinfo/hbr

From hbr@mailman.qth.net  Tue Jul 16 22:08:31 2002
From: hbr@mailman.qth.net (William L. Hopkins)
Date: Tue, 16 Jul 2002 17:08:31 -0400
Subject: [HBR] Heathkit feedthru caps
References: <20020716171423.TRCG16483.out016.verizon.net@gemini>
Message-ID: <02Jul16.171900edt.119119@gateway.naz.edu>

Hello out there,

I am repairing the Heathkit Comanche MR1 xcvr and the Cheyenne MT1 xmtr.  Am in need
of the little feed-thru capacitors at .001mfd I believe.  Their dialectrics are a
hard silicon clay pipe, which, I fear can be easily scrunched.  Anyone know of a
source for these?

Bill Hopkins AA2YV
Rochester NY 14618



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From hbr@mailman.qth.net  Thu Jul 18 00:21:37 2002
From: hbr@mailman.qth.net (Sandy and Kees Talen)
Date: Wed, 17 Jul 2002 18:21:37 -0500
Subject: [HBR] Bill McKay W7QBR...SK  (author of the Jan 1963 HBR article)
Message-ID: <20020717.183454.-248323.19.windy10605@juno.com>

--------- Forwarded message ----------
From: RCMDI@aol.com
To: windy10605@juno.com
Date: Wed, 17 Jul 2002 17:36:07 -0400
Subject: Re: HBR Receivers
Message-ID: <5EA9790B.0E4A48D0.0000F20B@aol.com>

Kees,

This is Bill's wife replying. I'm very sorry to tell you that Bill died
on June 12 of heart failure. It was sudden and unexpected, although he
had many health problems, as you're probably aware. I'm checking his
email account periodically for personal messages and just read yours
today.

I know Bill would have been pleased to have the focus placed on his HBR
receiver. Also, I know he enjoyed hearing from you. His son and grandson
may get interested in ham radio - I think they're going to take over his
equipment and try to get his call sign reassigned to them. 

Again, I'm sorry to deliver bad news.

Sharon McKay
scmck@aol.com

From hbr@mailman.qth.net  Mon Jul 22 23:31:38 2002
From: hbr@mailman.qth.net (Sandy and Kees Talen)
Date: Mon, 22 Jul 2002 17:31:38 -0500
Subject: [HBR] CD status
Message-ID: <20020722.173151.-147923.10.windy10605@juno.com>

I have 5 copies out locally for testing ...various web
browsers and various levels of computers. Also, some
higher quality copies of the QST articles are being 
re scanned, etc. Looking forward to having the CD available 
late next week.

73s  Kees K5BCQ

From hbr@mailman.qth.net  Wed Jul 31 23:28:39 2002
From: hbr@mailman.qth.net (Sandy and Kees Talen)
Date: Wed, 31 Jul 2002 17:28:39 -0500
Subject: [HBR] Fw: [QSL-Net] Help Needed
Message-ID: <20020731.173735.-248603.2.windy10605@juno.com>

For all you folks interested in this HBR Receiver reflector,  all these
"qth.net" reflectors (Collins, Heathkit, Boatanchors, Hallicrafters, 
Antennas, Homebrew, etc, etc) are running on hardware and software 
provided by free by Alan Waller (K3TKJ). Any periodic financial 
assistance you can provide Al would be appreciated. I'm sending him 
$30 today, as I do periodically. Please send what you can, this is a
great
service he's providing, spam free, so he gets no funding from advertisers
like some of the other sites. 

The CD's are nearly ready to go, I'm still trying to get them available
by this weekend.

73s  Kees K5BCQ 

  
--------- Forwarded message ----------
From: "Alan L. Waller" <k3tkj@qsl.net>
To: qsl-net@mailman.qth.net
Date: Wed, 31 Jul 2002 17:49:01 -0400
Subject: [QSL-Net] Help Needed
Message-ID: <5.1.0.14.2.20020731174240.01c4f7b8@mail.qsl.net>

Gang,

Below is the text of a message to all users when they get the monthly 
password reminder tonight. I need YOUR HELP to remind users that we need 
help to keep the bills paid. I struggle with this every month and believe

me it gets old. Please do whatever you can to help us get some donations.

73, Al



This message is a reminder, sent out once a month, about your QTH.NET
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There are few bargains left in this world but I see this as one of them.
If 
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then please help me.

Please contribute to the funding of this site. I suggest $15, less than
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important
to our future. The choice is yours. I can't continue without your help.

If you care to contribute, please do it today.

By Credit Card     https://proxy.qsl.net/donation
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