[ARC5] BC-453 Conversion for 10 meters

[Kenneth G. Gordon]

On 17 Nov 2013 at 9:24, Phil Carpenter wrote:

> Does anyone know if Stoner ever published a revised Q5-er receiver
> with full 10 meter capability? The last article I saw was is updated
> 1959 version published in the New Single Sideband Handbook edition of
> 1958. I don't have a copy of his 1964 edition, so I'm wondering if his
> never ending research and experimentation (in the 1959 version article
> he says he is still working on the 10 meters problem and evolving the
> circuits) ever paid off in a further revised and updated version
> published later.

I would be very interested in that also.

> Any help is appreciated as I'm planning a new receiver project using a
> BC-453 as the base IF as a learning experience and challenge.

As you know, the basic problem with using a BC-453 as the main receiver is 
the low IF, which would make images at frequencies much above about 40 
meters really bad.

He would have had to make some sort of at least double-conversion system, 
if not triple conversion.

I don't know if you are aware of an article (with followups) which was printed 
in QST magazine a long time ago which used a BC-453, a BC-454 and a 
BC-455 to build a triple-conversion "ARC-5" receiving setup for 80 and 40 
meters. If you don't have that, I can get you a copy in PDF format. 

In fact, I have two of those complete setups here, both in poor condition.

The articles may give you some ideas, however.

I also have a BC-454 here which I worked on for quite some time, and talked 
about it on this list, which had been converted to cover the 10 meter band. I 
have written the entire adventure up as an article for ER Magazine, and Ray 
will print it within the next few months. It covers 28 to 30 MHz, and even with 
the 12SK7s, has good sensitivity and "good enough" selectivity. It is also 
stable, which surprised me.

vy 73,

Ken W7EKB