[ICOM] Icom filter question

[Frank A. Ellis]

Rod,

The ICOM FL-series filters (9 MHz and 455 KHz) are
crystal-based designs, while the smaller Murata CFJ
series commonly used by default in the older ICOM rigs
in the 455 KHz position are ceramic. ICOM even used
some Kokusai mechanical filters at the 455 KHz IF, the
IC-730's factory stock 455 filter being an example of
this.

ICOM does not manufacture any filters. They are made
for ICOM (at least they used to be) by Nikko Denshi
(spelling?) If I recall correctly.

73, Frank W3UHF



--- Rod N0RC <n0rc at frii.com> wrote:

> Folks,
> 
> I've always wondered: What technology does Icom use
> for their filters? 
> Crystal, Ceramic, Mechanical...other? Never had much
> luck figuring this 
> out from web searches, manual reading....
> 
> TIA
> 
> --
> 73, Rod N0RC
> **Happy Holidays**
> 
> 
> ----
> Your Moderator: Dick Flanagan K7VC,
> icom-owner at mailman.qth.net
> Win a new Icom IC-756 PRO III and help QSL/QTH.net
> Details at: http://mailman.qth.net/
> 



		
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