One other subtle difference I've noticed is that my newer one, a 5N06xxxx
has some ventilation holes over the CPU board the my older 5F01xxxx does
not.
I've long since had my older one back to Yaesu and had all the mods put in.
They all work well, but I havent found that the Heil headphone mod is
necessary. I never have my unmodded one up above 1 oclock, and that's on a
dead band.
One unofficial mod I did to both of my radios that I highly recommend for
those running RTTY or other digital modes, is to cut the Mute line to the RX
squelch circuit. Some of you may have noticed that you can disable the
annoying beep tone that the radio emits everytime you change something on
the front panel. However, this doesnt disable an accompanying momentary
Mute signal from the microprocessor that squelches the RX audio while the
radio is supposed to be beeping! The cure is just to cut the line somewhere
on the PCB's. You'll now hear some more pops and such when you switch
filters, etc., but this is much less annoying than the loss of data that
occurs otherwise.
73, Ty K3MM
-----Original Message-----
From: Brian Allen <Brian_Allen@krinfo.com>
To: VHF Reflector <vhf@w6yx.stanford.edu>
Cc: Ron Galbraith <N0EC@concentric.net>
To: <yaesu@contesting.com>
Date: Tuesday, November 04, 1997 20:05
Subject: Yaesu FT-1000MP Newer Upgrades
> For those interested in the FT-1000MP...
> I have found some interesting information pertaining to the FT-1000MP
> for anyone considering a used, or new, but earlier manufactured model.
>
> When I initially spoke with a Yaesu technically support person, I was
> told that there was no difference between the earlier version, and the
> later versions of the MP, but after pointing out things that I've
> heard about the radio, it was "Oh yeah, those..."!
>
> Here is what to watch out for...
>
> For models with serial numbers prior to 04XXXX (email hearsay, as the
> tech I spoke with did not know where the break is at), the following
> upgrades can be done. Numbers in front of this indicate the year and
> month the model was manufactured, i.e. 5L03XXXXX indicate a
> manufactured model in 1995. I don't actually have my radio as of yet
> to confirm this, but this is what the Yaesu Tech. reported to me.
>
> 1) Installation of a TRV switch (Used for transverter operation)
> (Earlier versions did not have this, but this is included on newer
> versions now). New versions have a blue switch near the ALC unit,
> accessible through the small removable top panel door. Details
> can be found in the manual. (Relatively simple mod requiring a
> switch attached to the ALC unit.)
>
> 2) Critical Power Adjustment with the Processor Switch Turned On
> (Earlier versions did not have this, but this is included on newer
> versions now). See Technical Bulletin TB-9607 for details.
> (Relatively simple mod requiring a jumper wire and a cut trace in
> the AF unit.)
>
> 3) Antenna Won't Tune on the 15 Meter Band
> (Earlier versions did not have this, but this is included on newer
> versions now). See Technical Bulletin TSN-9606 A for details.
> (This one looks a lot more involved with copper braid, tape, new
> parts required in the PA and RF units.)
>
> For all units:
> 1) Low Audio Gain with Plug-in Heil Headphones
> See Technical Bulletin TSN-9617 for details. (A little involved,
> but not bad... accessing the AF unit, and swapping 2 resisters on
> the board.)
>
> 2) Incorrect Frequency in Log Programs, While using the Offsets (28
> MHz, IF)
> There is no correction for this. Although the radio can be setup
> to display the correct frequency for transverter offsets, log programs
> will still interpret the 28 MHz IF frequency.
>
> I hope this helps.
>
> 73, Brian (N0VSB)
>
>------
>Submissions: vhf@w6yx.stanford.edu
>Subscription/removal requests: vhf-request@w6yx.stanford.edu
>Human list administrator: vhf-approval@w6yx.stanford.edu
>
--
FAQ on WWW: http://www.qsl.net/k7on/yaesu.html
Submissions: yaesu@contesting.com
Administrative requests: yaesu-REQUEST@contesting.com
Problems: owner-yaesu@contesting.com
Search: http://www.contesting.com/km9p/search.htm
|