[Yaesu] FT2600M MEMORY PROBLEM / FT7100

Wed, 17 Apr 2002 05:58:29 -0500

HAS ANYONE HEARD OF ANY OF THE SAME PROBLEMS WITH THE FT7100 DUAL
BANDER????
CAN USE THE 2600 FOR A BASE UNIT AND THE 7100 AS A MOBILE IF IT DOES NOT
HAVE THE SAME PROBLEMS....
RICK
KB9WJH

-----Original Message-----
From: [email protected] [mailto:[email protected]]
Sent: Sunday, April 14, 2002 22:10 
To: Patrick A. Thompson Sr.
Cc: [email protected]
Subject: Re: [Yaesu] FT2600M MEMORY PROBLEM

Well I would take out the relay and leave the radio tied to the battery
(do you have both POS and NEG there??) Also if that does NOT work,
THEN ADD a memory battery to the radio...it aint that hard with a 
flat watch style silver button battery and a diode...just feed it to
the line to the CPU...

Either way should fix the problem...

HOWEVER, also look for a dirty or sticky button on the front panel..
is there one which when pressed and power is cycled, it does a reset???
MY TM742 has that problem...and its one of the vol/sq controls which
got slightly bent when the rig was dropped one....(face first of 
course!)...I have to be careful or else the CPU gets reset on startup
and it IS a pain reprogramming 100 channels per band!!!

Chris
WB5ITT

"Patrick A. Thompson Sr." wrote:
> 
> I've had this identical problem and have not found a fix.  My radio is
long
> out of warranty.  Currently the radio is powered directly from the
vehicle
> battery with a relay to disconnect the battery during cranking, etc.
as
> suggested by Yaesu tech people.   The reset is related to engine
cranking so
> use on a bench supply might be okay.  The radio also seems to reset
more
> often with more memory channels programmed than with just a few
programmed.
> I can program just two or three memories and the unit will be okay for
> months at a time but if I spent an hour or so and program 100 channels
it
> will reset within the same day.
> 
> I've tried adding capacitance to the five volt regulator internal to
the
> radio that supplies the processor without any improvement.
> 
> There is no internal memory battery in this radio to replace as some
people
> have suggested.
> 
> In my opinion there is a serious flaw in the design of the radio that
allows
> this reset to occur even with reasonable care.
> 
> An equivalent new radio is less than $200 so there's a limit on how
many
> times I'm willing to ship it back for repair.
> 
> Its a shame these units have this flaw because otherwise its a
satisfactory
> radio with good transmit audio and good immunity to intermod from high
> powered FM and TV transmitters nearby.
> 
> Pat
> WA4TUK
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