[ICOM] Optional Filters??

[Anders Janis SM4RNA]

You can use both and infact PBT works best if you have the same bandwith in 
both 9MHz and 445kHz IF.

For 455kHz you can choose a INRAD filter slightly better filter skirts and 
still plug in. I have found INRAD filters ta have more accurate center freq. 
For 9MHz INRAD also have filters but they are not plug in. There I go with 
the ICOM FL-223.

For more information on filters check VA7OJ/AB4OJ Adam Farson's site.

/Anders

----- Original Message ----- 
From: "AD5VJ Bob" <rtnmi at sbcglobal.net>
To: "Icom Reflector" <icom at mailman.qth.net>
Sent: Thursday, February 01, 2007 5:46 AM
Subject: [ICOM] Optional Filters??


> Not sure how the filter scheme works on the Icoms.
>
> I am looking a purchasing some optional filters for my IC-775.
> I can purchase one 9Mhz or one 455Khz but not more at this time.
>
> Right now it is a toss up between
>
> 9 MHz FILTER
> FL-223: 1.9 kHz/-6 dB (SSB NAR.)
>
> 455 kHz FILTER
> FL-222: 1.9 kHz/-6 dB (SSB NAR.)
>
> If I can only get one of the above -
> Which is the better choice to make for the best selectivity, or do I have 
> to have them both IF's if I get either.
>
> Any ideas appreciated.
>
> Tnx bob ad5vj
>
>
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