[1000mp] Filters ?

Wed, 18 Sep 2002 08:09:05 -0400

Dear Philippe et. al,
    The standard filter for the sub receiver is the YF-115C, which is a 500
Hz filter at 455 Khz IF.  8215 Khz  IF filters for the main receiver 2nd IF
will not work at 455 Khz  in either the main or sub receiver.
    The YF-115C will work in the 3rd IF of the main receiver as well as in
the sub receiver, but I use an Inrad 400 Hz filter in the 455 Khz IF for CW.
    One gets much better rejection of signals off the sides or skirts of the
filters with a filter in the 455 khz IF as well as the 2nd IF.  So, the
overall received bandwidth is narrower.
    73,    George    K8GG


----- Original Message -----
From: "ON4VP" <[email protected]>
To: <[email protected]>
Sent: Wednesday, September 18, 2002 12:57 AM
Subject: [1000mp] Filters ?


> Hello,
>
> Now after a couple of months discovering the ft1000mp, I guess it's time
to
> add some filters.
> After reading some ideas from other users, I made up my bandwiths.
>
> The most efficient filter it the filter closest to the input, i.e. the 8,2
> Mhz IF.
> The stock 500hz yaesu filter is installed from the factory.
> I like to go for 2,8 - 2,4 - 1,8 - 0,4 to fill the 8,2 IF bank.
>
> Can someone explain to me the additional benifit having the 455khz filters
> installed to.
> would this give a big improvement ?
>
> Does the 500 stock filter (8,2) fits for the 455 or second VFO ?
> Thanks for info.
>
> Philippe ON4VP
> www.2die4.be
>
>
>
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