From shoppa_hbr at trailing-edge.com  Sat Sep 17 22:05:08 2005
From: shoppa_hbr at trailing-edge.com (shoppa_hbr@trailing-edge.com)
Date: Sat Sep 17 22:12:40 2005
Subject: [HBR] Homebrew IF transformers
Message-ID: <432CCB54.nailEPL119CV9@mini-me.trailing-edge.com>

Unlike most of you guys, I don't have a garage full of command sets
to strip IF transformers from.  So I'm looking at what I'd have to
do to make my own IF transformers from scratch.

On usenet I found a reference to

  http://geek.scorpiorising.ca/455KHz.html

and it seems perfectly practical to do this sort of thing.  For 100kHz
or lower obviously I'd use bifiliar or more-filiar windings to keep
the Q high.

The universal windings ought to be straightforward - I recently built
a jig to let me re-wind burnt out RF chokes and while my setup is far
from "automatic" it works fine.

Combine with a couple small caps/trimmers and I think I can make
some nice little transformers I can put in a can.

Would the result be a complete basket-case or am I barking up the
right tree?

Finally found a real nice Millen dial drive and I just gotta build
me an HBR (well, HBR-alike.)  Even though it'll take me years at
this rate!

Tim.
From JMarsh1014 at aol.com  Sun Sep 18 15:50:26 2005
From: JMarsh1014 at aol.com (JMarsh1014@aol.com)
Date: Sun Sep 18 15:58:02 2005
Subject: [HBR] IF Transformers
Message-ID: <20b.98a861f.305f1f02@aol.com>

I have NOS IF Transformers for sale if anyone is interested.  Regards  John  
From hugo at optonline.net  Sun Sep 18 15:53:28 2005
From: hugo at optonline.net (Hugo W. Catta)
Date: Sun Sep 18 16:02:00 2005
Subject: [HBR] IF Transformers
In-Reply-To: <20b.98a861f.305f1f02@aol.com>
References: <20b.98a861f.305f1f02@aol.com>
Message-ID: <432DC5B8.5050708@optonline.net>

JMarsh1014@aol.com wrote:

>I have NOS IF Transformers for sale if anyone is interested.  Regards  John  
>************************************
>Visit the HBR Receiver Web Site with over 100 pictures of receivers and 
>construction notes...... via http://www.qsl.net/k5bcq/ 
>there is also a mirror (faster response)at http://k5bcq.edebris.com/
> 
>
>Retrieve reflector archived data via http://mailman.qth.net/mailman/listinfo/hbr
>
>
>WHat freq. and/or make/model ?
>
Thanks
Hugo

From w2dgb at ptd.net  Sun Sep 18 06:50:04 2005
From: w2dgb at ptd.net (Bill)
Date: Mon Sep 19 09:01:35 2005
Subject: [HBR] Homebrew IF transformers
References: <432CCB54.nailEPL119CV9@mini-me.trailing-edge.com>
Message-ID: <001301c5bc3e$ba24df20$6401a8c0@cmts.sth.ptd.net>

Not to deprive you of the pleasure of doing what you have outlined, but if
push comes to shove I am sure that I can find three 85 kc IFs from an old
command set around here.

Yours for the postage.

Bill Fizette  W2DGB
----- Original Message ----- 
From: <shoppa_hbr@trailing-edge.com>
To: <hbr@mailman.qth.net>
Sent: Saturday, September 17, 2005 10:05 PM
Subject: [HBR] Homebrew IF transformers


> Unlike most of you guys, I don't have a garage full of command sets
> to strip IF transformers from.  So I'm looking at what I'd have to
> do to make my own IF transformers from scratch.
>
> On usenet I found a reference to
>
>   http://geek.scorpiorising.ca/455KHz.html
>
> and it seems perfectly practical to do this sort of thing.  For 100kHz
> or lower obviously I'd use bifiliar or more-filiar windings to keep
> the Q high.
>
> The universal windings ought to be straightforward - I recently built
> a jig to let me re-wind burnt out RF chokes and while my setup is far
> from "automatic" it works fine.
>
> Combine with a couple small caps/trimmers and I think I can make
> some nice little transformers I can put in a can.
>
> Would the result be a complete basket-case or am I barking up the
> right tree?
>
> Finally found a real nice Millen dial drive and I just gotta build
> me an HBR (well, HBR-alike.)  Even though it'll take me years at
> this rate!
>
> Tim.
> ************************************
> Visit the HBR Receiver Web Site with over 100 pictures of receivers and
> construction notes...... via http://www.qsl.net/k5bcq/
> there is also a mirror (faster response)at http://k5bcq.edebris.com/
>
>
> Retrieve reflector archived data via
http://mailman.qth.net/mailman/listinfo/hbr
>
>
>
>
> -- 
> No virus found in this incoming message.
> Checked by AVG Anti-Virus.
> Version: 7.0.344 / Virus Database: 267.11.1/104 - Release Date: 9/16/05
>
>

From JMarsh1014 at aol.com  Fri Sep 23 23:07:51 2005
From: JMarsh1014 at aol.com (JMarsh1014@aol.com)
Date: Fri Sep 23 23:16:20 2005
Subject: [HBR] Re: HBR Digest, Vol 20, Issue 2
Message-ID: <6a.5e7b7f4b.30661d07@aol.com>

Sorry if I have not responded to any one yet. I have been notified to  go to 
Austin with 
  emergency communications equipment and from there , on to Houston.  Drop me 
a line in
  about a week.   I just got in from Austin and have to turn  around and go 
right back.
 
  de KC5FMX   jmarsh1014@aol.com
