[Yaesu] Re: [INRAD] Inrad filter instead of Murata filter in second RX Yaesu FT-1000(D)/FT-1000MP

[Hans Remeeus]

Dear all,

Please read 'skirts' instead of 'slopes'. Sorry.

The Murata filters have wide skirts, not as steep as the crystal filters 
from Inrad.


73,
Hans Remeeus (PA1HR)
http://www.remeeus.nl
Communication is about people, the rest is technology.


---- Original Message ----
From: "Hans Remeeus" <hans at remeeus.nl>
To: <FT-1000MP at yahoogroups.com>; <List at inrad.net>;
<yaesu at mailman.qth.net> Sent: Sunday, March 06, 2005 6:03 PM
Subject: [INRAD] Inrad filter instead of Murata filter in second RX
YaesuFT-1000(D)/FT-1000MP

> Dear Yaesu/Inrad-friends,
>
> In the second RX of the Yaesu FT-1000(D) and the FT-1000MP
> (Mark-V/Field) you will find a Murata 455 kHz ceramic filter. This
> will be the Murata CFJ455K '15', '13' or '5' filter. Perhaps another
> type, but most of them have a bandwidth of about 2400 Hz with slopes
> like a pancake.
> It may be a good suggestion to de-solder this Murata filter and use
> the Inrad 1800, 2100 or 2800 Hz crystal filter instead. You will need
> two thin coaxial cables for it.
>
> I did this in the FT-1000(D) with very good results.
>
> Two picture with an instruction you will find at:
> www.remeeus.nl/english/hamradio/ft1000subrxfiltering.htm
>
> Good luck!
>