[Yaesu] Yaesu Digest, Vol 59, Issue 10

[Dave Maley]

Scott;
You may be confusing the I.F. filters with the roofing filters.  The filters 
of concern are small and placed right after the first mixer.  They are in 
the lo vhf range on upconverting hf  radios.  Designing them with a narrow 
bandwidth is not easy.  Amateurs are the only ones that are concerned. 
Marine and commercial hf operators don't normally have interference as 
severe as we do.  Military might ask for it, although the military isn't 
concerned about spending $50,000 for a radio.  I'm still suprised that hams 
buy radios that break $10,000.
Motorola came out with a ham version of their mil-spec radio.  I've never 
heard one on the air.
Dave   WA0ZZG


Message: 2
Date: Mon, 19 Nov 2007 14:20:36 -0500
From: Scott Manthe <n9aa at arrl.net>
Subject: Re: [Yaesu] FT1000 (D) or FT2000?
To: Yaesu at contesting.com
Message-ID: <4741E204.5090209 at arrl.net>
Content-Type: text/plain; charset=ISO-8859-1; format=flowed

Welcome to the 21st century. ;)

The FT-2000 doesn't have cascaded filters because the IF DSP works as
the second filter. This certainly isn't a design flaw, although one
could debate how well it's implemented in the FT-2000.

Oddly, one of my friends, who is a traffic handler, DXer and contester,
sold his FT-1000D after getting a FT-2000. He says the performance is
comparable and the 2000 is less fatiguing to listen to.