[ARC5] BC-453/Q5er Converter

[D C *Mac* Macdonald]

Way back in 1961, I built a small one-tube converter
for 75 meters to go with the BC-453 receiver. I think
it probably used a 6BE6 as crystal oscillator/mixer.
 
Since I was primarily interested in 75 AM meter phone
work, I probably used a crystal that would get me the
3.8 - 4.0 MC/s range.

I have no idea what the details were, but they could
not have been TOO fancy. I probably pitched the thing
when I bought a Hammarlund HQ-145X in late 1961, my
very first ever NEW piece of ham gear.
 
I actually HAVE found a circuit for such a converter
that I drew from some source back then.  It used a
6BZ6 as an RF amp, and a 6U8A triode/tetrode as a
crystal oscillator/mixer.
 
I don't think that was what I had but a plan for the
future until I bought that HQ-145X.
 
Coils were to be wound on 1/2" diameter polystyrene
rod and there were no other special components.  It
was going to be run from the same power supply that
was powering the BC-453 (Walter Ashe power supply
from my first Novice station.  I did convert the
BC-453 to 6.3 Volt filaments 'cause that's all I
had available for a filament supply.
 
I'm pretty sure the circuit came from some magazine.
It was going to serve on both 80 and 40 meters using
a dual section 265 mmFd variable to tune the RF amp
and the input to the mixer section of the 6U8A.
 
I drew the schematic on spiral notebook paper with
#4 drafting pencil.  Amazing that I still have the
schematic, but I am truly a packrat and filed almost
everything for almost 57 years of hamming.
 
I don't know if it would scan, but I don't have a
scanner anyway.


~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~ 73 - Mac, K2GKK/5 ~
~ (Since 30 Nov 53) ~
~ Oklahoma City, OK ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~


* "An unarmed man can but flee *
* from evil. Evil can NEVER be *
* overcome by flight FROM it." *
 
 
 
----- Original Message -----
From: hmitchell3 at comcast.net
To: arc5 at mailman.qth.net
Subject: [ARC5] BC-453/Q5er Converter
Date: Mon, 20 Sep 2010 18:23:34 +0000 (UTC)
 
I am looking for circuits for an 80 or 80/40 meter converter for 
the BC-543. I have several old circuits but they involve coils and 
IF transformers that are not readily available. Solid state is OK, 
I just want to finally have a working Q5er.
 
Thanks,

Harvey, K5YU