[amsat-bb] Re: FT-847 vs IC-910

Jim Jerzycke kq6ea at pacbell.net
Fri May 29 22:28:52 PDT 2009

I agree with Wayne. I added a 2.1kHz INRAD filter on the receive side, and a Collins mechanical filter on the transmit side. The receive improved tremendously, even the DSP works better, and my local friends tell me the transmit audio sounds more natural.
I've never used a '910, so my observations are strictly relevant to the '847.
73, Jim  KQ6EA

--- On Fri, 5/29/09, Wayne Estes <w9ae at charter.net> wrote:

> From: Wayne Estes <w9ae at charter.net>
> Subject: [amsat-bb] Re: FT-847 vs IC-910
> To: amsat-bb at amsat.org
> Date: Friday, May 29, 2009, 10:00 PM
> Not all FT-847's are alike.  A
> stock FT-847 has wide, low-Q ceramic IF 
> filters.  My FT-847 has INRAD CW and SSB crystal
> filters that give 
> narrower IF bandwidth, with MUCH higher Q.  I haven't
> compared them, but 
> I suspect that a FT-847 receiver with quality IF filters
> performs 
> roughly on par with an IC-910.
> If shopping for a used FT-847, look for one with optional
> IF filters. 
> Collins mechanical filters are an improvement over the
> stock ceramic 
> filters, but crystal filters are even better.
> Wayne Estes W9AE
> Oakland, Oregon, USA
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