[ARC5] Potentiometer value needed

[Jim Falls]

The rods have been broken off. I intend to use it for CW, but would like the AM option. I'm glad there is a mitigation. I thought they were fixed coil slug tuned units. 

Cheers!
Jim K6FWT
CBLA #37

> On Aug 9, 2014, at 18:15, "Kenneth G. Gordon" <kgordon2006 at frontier.com> wrote:
> 
>> 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