[AMRadio] RCA BTA 500MX

LEE BAHR pulsarxp at embarqmail.com
Thu Jun 3 17:15:35 EDT 2010

I would think you would want to make C1 and C2 variable.  However, use the 
old inductor tapped down a bit for slightly lower inductance.

For my BTA 1R2,  I am in the process of installing two vacuum variables for 
these caps.  They will come out the top and then rotate 90 degrees with 90 
degree shaft couplers.

Lee, w0vt

Subject: [AMRadio] RCA BTA 500MX

> I'm about to get an RCA BTA 500MX  that once was the voice of Renfro 
> Valley Ky.  I have been helping a friend that has it now and is about to 
> give it to me.  We have been working thru many problems in the past 
> months.  I was wondering if anyone has completed converting one to 160 
> meters and if so were you able to use the factory output network.  Hope to 
> get the old thing working again and any help appreciated.  I am using on 
> AM now a BC 669B that I had fun restoring and now getting good reports on 
> the air.  73 Rich

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