Please check this website of Ken - K4EAA. (or contact him )
See : http://www.k4eaa.com/

P.S.
I hope this is in your neighbourhood.

For the RIT , a 10kOhm - 10Kohm resistor is used. (VR2)

For a service manual see: http://www.radioamateur.eu/KENWOOD.html

it's on page 65 of the service manual.

The partnrs are:

RF/AF potmeter - R19-3433-05 - VR2
Notch-SQ potmeter - R24-1402-05 - VR1

I hope this will be of help.

You can also check the following link to the schematic

http://www.radioamateur.eu/schemi/TS430S_sch.pdf

I don't know the accupack. But sometimes, I use a hobbyknife.
Warm the blade and gently cut the plasticpack open...

This is the same methode , which I use for laptop accupacks to replace the internal batteries.

When you combine ALL:
www.mods.dk
http://foxtango.org/foxtango001.htm
http://www.radioamateur.eu/schemari.html
http://www.alinco.com/pdf.files/
http://members.fortunecity.com/xe1bef/icom-manuals.htm
http://members.fortunecity.com/xe1bef/
http://www.ham.dmz.ro/

etc.... You must find the manual , you're looking for.

AND IT'S FREE

Here you have some answers:

QSQ    Have you a doctor on board (or is ... (name of person) on board)?    I have a doctor on board (or ... (name of person) is on board).

QSR    Shall I repeat the call on the calling frequency?    Repeat your call on the calling frequency; did not hear you (or have interference).

QSS    What working frequency will you use?    I will use the working frequency ... kHz (or MHz) (in the HF bands normally only the last three figures of the frequency need be given).

QSU    Shall I send or reply on this frequency (or on ... kHz (or MHz)) (with emissions of class ...)?
    Send or reply on this frequency (or on ... kHz (or MHz)) (with emissions of class ...).



if you want more info, please check:

http://www.kloth.net/radio/qcodes.php

P.S. Very nice list and Q-code explanation.

 

Check-out K4CY - Logger32 website.

http://www.logger32.net/

Also a good freeware logging + transceiver control program is

Hamradio de Luxe.

http://hrd.ham-radio.ch/
forum at: http://forums.ham-radio.ch/


best 73's

Please check-out this LINUX ham-website

http://radio.linux.org.au/?sectpat=logging&ordpat=title

For e-ham members, here's a nice forum about DIGITAL- ATV.


http://www.d-atv.nl/

Which is the new standard for ATV broadcasting.

There's also a dutch forum about ATV, if you can read dutch of course

http://atv.forum2go.nl/

The best place to ask for more information is the
FOX TANGO forum

http://foxtango.org/foxtango001.htm

Here you can find more info about these old Yaesu twins.

Please check-out this website of the HM-56 manual.

http://www.mods.dk/index.php?ListManuals=icom

Login as GUEST and you can download one manual per 4 days.

I hope this is still valid.

Check Ken - K4EAA's website.

http://www.k4eaa.com/index.html

When you become a gast member of mods.dk, you can download one manual every 4 days.
There you can find the FT-8100 Service manual ( 14 Mb zip file )

http://www.mods.dk/index.php?ListManuals=yaesu


Good luck...