Yaesu FT-5100/FT-5200 MODS
                        


This is a collection of hardware and software mods for the Yaesu
5100/5200 pair.  I have the 5100, so I can't verify these for the
5200.  I have collected every mod seen on the net (ie. Usenet) since
the introduction of the 5100, so I think this list is fairly complete.
I am interested in getting updates and corrections to this list, so
please send me e-mail if you find something that needs updating.
(This includes typos, wrong or missing attributions, caveats, warnings
about unmentioned side effects, serial numbers of radios that won't do
some of these mods, etc.)

SOME OF THESE MODIFICATIONS MAY DAMAGE YOUR RADIO IF YOU PERFORM
THEM IMPROPERLY.  WHEN IN DOUBT, DO NOT PERFORM THE MODIFICATION.

This advice is free, so remember that you get what you pay for.

	Brian McMinn (brian.mcminn@amd.com)
	N5PSS
	512-462-5389

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Backlight Control:

	Effect: manual control of backlight

	1) Hold down the MHZ key and turn radio on
	2) Use tuning knob to adjust brightness
	3) When FUNC is active, the tuning knob will adjust
	   brightness again.
	4) You can restore automatic control by repeating step 1.

	Notes:  Manual is fuzzy on this feature.

	Attributed: Yaesu

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Crossband Repeat (reported as working on 5100 and 5200):

	Effect: Enable crossband repeat

	1) Dial up two frequencies you want to crosslink (be sure to
	   pay attention to transmit offsets, if any)
	2) Turn radio off.
	3) Hold down the RPT key and turn radio on

	Result:  The tone encode/decode flags and the -+ flags will be
	flashing and the radio will be in low power mode.  When either
	band's squelch opens, the other band is moved into the primary
	frequency display and the transmitter keys.  Audio link
	appears to be speaker to mike.

	Exit crossband repeat mode by repeating steps 2 and 3 above.

	Attributed: Yaesu

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Transmitter Timeout:

	Effect: automatically limit transmitter "on" time

	1) Hold down the HIGH/LOW button and turn radio on
	2) Use tuning knob to change the number in left VFO.  This
	   number is number of minutes for the timeout timer.  The
	   factory default appears to be 15 minutes.
	3) Transmitter shuts off with "Err" displayed in VFO if the
	   time limit is exceeded.

	Attributed: Bill Mayhew, N8WED, wtm@uhura.neoucom.edu