[ICOM] Roofing Filters Question

[Anders Janis SM4RNA]

Roofing filters are in 64MHz IF.

If you choose from 9M och 455k the 9m is earlier than 455k in the chain and 
therfore to prefere.

On the other hand. If you get teh 9M filters at first you will get the other 
later or regret that you did not when they are not availeble any more.

The DSP filter is 80Hz by the way.

/Anders


----- Original Message ----- 
From: "Skip Cameron" <scameron at austin.rr.com>
To: <icom at mailman.qth.net>
Sent: Monday, June 11, 2007 6:12 PM
Subject: [ICOM] Roofing Filters Question


>I have an IC775DSP with 455khz and 9mhz IF's.
> I have the stock IF filters, which are 500hz for CW and 2400hz for SSB.
> On CW I can select wither the 2.4 or the 500, and I can also engage DSP 
> which really narrows the CW,
> down to about 50hz.
> For contests and split Dxing, the DSP 50 hz is too narrow on CW, 500 hz 
> works pretty good, and the
> 2.4 is too wide on SSB, with lots of other strong signals interfering.
> I have been considering INRAD roofing filters, 400cw and 2100SSB.
> Would I need them in both 455 and 9 IF's?
> If I just wanted one, not both, which would be best?
> Skip W5GAI
>
>
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