[Yaesu] Yaesu FT450 product review confusion

[David J Windisch]

Buy a used unit, and resign yourself to paying for some home-schooling, 
unless a local can let you educate yourself on his '450.  I've bought and 
sold a few before settling for a modified "grand" ;o)  73 Dave N3HE

----- Original Message ----- 
From: "John Geiger" <n5ten at yahoo.com>
To: <yaesu at mailman.qth.net>; <yaesu at contesting.com>; 
<vhfcontesting at contesting.com>; <vhf at w6yx.stanford.edu>; 
<6meter at yahoogroups.com>; <50mhz at mailman.qth.net>
Sent: Wednesday, April 16, 2008 3:48 PM
Subject: [Yaesu] Yaesu FT450 product review confusion


>I have read both the QST and RSGB product reviews, as
> I have been thinking about buying this radio.
> However, it gets confusing as the reviews seem to be
> in direct conflict with each other in one very
> important.  In the QST review, when it discusses the
> DSP on the radio, if states:
>
> "The NOTCH, SHIFT, and WIDTH functions clearly operate
> within the AGC loop (it's possible to view their
> effects via the S meter)."
>
> However, in the RSGB review of the FT450 they state:
> "The AGC circuitry senses signal levels upsteam of the
> channel filter where the bandwidth is determined by
> the first IF roofing filter.  AGC is applied to the
> signal frequency RF and first IF amplifier stages.  As
> a consequence, strong signals up to 10khz off channel,
> outside the receiver passband but inside the roofing
> filter bandwidth, will result in desensitizitation."
>
> These 2 statements seem to conflict each other.  The
> RSGB statement is depressing to read because, if
> correct, means that the design of the FT450 would make
> it useless in contests and crowded bands because the
> receiver would be constantly getting desensed by
> signals you couldn't even hear!
>
> Do you know which is correct?  It seems confusing to
> have two reviews which conflict each other so much.
> What is your experience with the FT450 overall?  Is it
> useful in a strong signal environment?
>
> 73s John AA5JG
>
>
> 
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