[R-390] SPECIAL R390A PANEL (6kc & 8kc)

[Bob Camp]

Hi

With the stock audio chassis the 16 KHz filter isn't as useful as it 
might be. On a radio running an improved audio chain the 16 KHz filter 
can be nice under the right conditions. I wouldn't use it on a crowded 
band though ...

The filter that really does the major work around here is the 4 KHz on 
AM. It's about as narrow as you can get and still get a usable signal. 
The real limit on what you can do is finding the old filters in the 
right bandpass and impedance combinations.

	Enjoy!
	
		Bob Camp
		KB8TQ


On Jun 12, 2004, at 5:47 PM, Dee C. Almquist wrote:

> Have you ever considered a narrower filter like 6kc & move the 8kc 
> filter to the 16kc slot, eliminating 16kc?  This means re-silk 
> screening refinished panel that puts 6kc where 8kc position was & 
> changed 16kc to read 8kc with same fonts as original. I have some pics 
> of one done this way. Its pretty neet & I think I will modify my 390A 
> this way when I restore it. That 16kc filter is much too broad & I 
> seldom use it. But I use the 8kc a lot. And 6kc is just right for AM 
> operation with reasonable band conditions.
>
> Because of a request for 2 special R390A panels, I have the screen in 
> stock to do many more this way. Cost Will be $135. for this "special", 
> front side.
> Regards
> Dee
>
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