[ARC5] Potentiometer value needed

[Kenneth G. Gordon]

On 9 Aug 2014 at 14:58, Jim Falls wrote:

> Sounds good, Ken! Thanks. Prior owner yanked out the IF Cores, so I'm pretty
> well stuck there.

Do you mean he pulled up on the rods so hard that he broke them off? If so, 
you can remove each can (two screws at the bottom), unplug the can, then 
there are 4 screws around the bottom-side, pull the outer can straight up and 
off, then manually move the top coils, carefully, back down to their bottom 
notches, then reinstall the covers and the cans.

Pulling the tubes first will help make the job easier to rearch.

I am assuming you need the broader selectivity since you plan to listen to 
phone signals instead of just CW. Otherwise, the selectivity with all three 
rods all the way up is a bit too narrow for good AM reproduction.

You can experiment with the end ones down and the center one up, etc...

> I've used it for beacon hunting, but the "volume control"
> would make my ears ring if I sneezed on it. 

You need an AF gain control and audio-taper pots...

> I hope to build a magnetic loop in the future to knock down some of the local
> QRM. 

What frequencies do you plan to listen to?

I have plans for various loops.

Ken W7EKB