[ARC5] BC-455 IFT - selectivity solutions...

[Jim Falls]

There may be some floating about in various hamfest junk boxes. 

I recall having several in that range for my TCS that I planned on restuffing. 

I'll check tonight. 

Cheers!
Jim K6FWT
CBLA #37

> On Oct 30, 2014, at 14:46, Kenneth G. Gordon <kgordon2006 at frontier.com> wrote:
> 
>> On 29 Oct 2014 at 18:47, J Mcvey wrote:
>> 
>> So, to raise the Q, improving the L6-C12 combo with something better ( 
>> higher Q components?) would be the way to do it. Otherwise, it's back to 
>> "regen".
> 
> Actually, for a hacked-up piece-of-junque like those I am saddled with, 
> Mike Murphy's WU2D, crystal-filter really appeals to me. Trouble is, 
> finding 2830 KHz rocks... 
> 
> I checked with International Crystal Manufacturing and they need around 
> $30 each for a one-off. I haven't contacted JAN yet, though.
> 
> Since 2830 KHz is actually some sort of marine radio frequency, there 
> really ought to be a cheaper source...
> 
> In addition, there are several problems with the regenerative IF, amongst 
> which is that as the signals you are working with get stronger, its 
> effectiveness gets weaker, which is the opposite of what you really want.
> 
>> Does that make sense?
> 
> Yes. I've always liked "Q-Multipliers". I have several, but none on 2830 
> Khz....yet.
> 
> vy 73,
> 
> Ken W7EKB
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