[Boatanchors] Boatanchors Digest, Vol 131, Issue 22

[Richard Knoppow]

----- Original Message ----- 
From: "Rob Atkinson" <ranchorobbo at gmail.com>
To: "Drew P." <drewrailleur807 at yahoo.com>
Cc: "Boat Anchors List" <boatanchors at mailman.qth.net>
Sent: Thursday, December 18, 2014 11:40 AM
Subject: Re: [Boatanchors] Boatanchors Digest, Vol 131, 
Issue 22


> hi Drew,
>
> There have been two or three articles in ER about 75A-3 
> filters.
> Usually they are LC filters.  It has become a kind of 
> sport for me at
> hamfests to lift the lids on any A-3s for sale and see how 
> the filters
> were made.
>
> Mouser sells these small Murata 455 kc ceramic filters. 
> They are
> categorized as "signal conditioners" and are in different 
> bandwidths.
> the ones to get are 2, 3 and 4 kc which you have to double 
> for the AM
> passband, i.e. 4,6 and 8 kc.

    Did you mean this?  I think you must halve the passband 
for the audio response for AM (unless you tune only one 
sideband) and I think its what you meant to say.


--
Richard Knoppow
Los Angeles
WB6KBL
dickburk at ix.netcom.com