Yaesu FT-5100/5200 mods, Rev D
Brian McMinn
Yaesu FT-5100/FT-5200 MODS
Rev D (11 June 1993)
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....@amd.com)
N5PSS
512-462-5389
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General Review (5100):
Since Yaesu's advertising has already made the good points
known, I'll concentrate on the warts and shortcomings.
Dual In-Band Receive: works as advertised except for
sensitivity. The "main" receiver works very well. The "sub"
receiver works very well when tuned to the opposite band from
the "main" receiver. When tuned to the same band, the "sub"
receiver suffers from slightly lower sensitivity in the ham
bands and greatly reduced sensitivity out of the ham bands.
There is a 2m VCO/PLL/IF and a 70cm VCO/PLL/IF. I assume that
dual in band receive is done with the opposite band's
receiver. This would explain the poor sensitivity, but it
sure raises some questions about how the duplexer works.
I expected a type "N" connector, the radio came with UHF.
Control wart: (are you listening Yaesu?) You can only
transmit on the "main" (ie. left) side of the radio. When
both 2m and 70cm receive are active, you change bands with the
"BAND" button. This swaps the left and right displays. When
dual in-band receive is active, the "BAND" button changes both
the main and sub receivers from 2m to 440 or from 440 to 2m.
Arrrgh!!!! I would prefer a "SWAP" button to swap left and
right regardless of mode. (The "SUB" button is used instead.)
Automatic backlight dim: works as advertised but the backlight
level under low ambient lighting is WAY too low. Manual
control is the best solution.
DTMF page: works as advertized, but the *&%$#@ thing insists
on "ringing" like a phone EVERY time it receives the page
sequence. This means that you have to co-ordinate with the
other station to turn the *&%$#@ DTMF stuff off at the same
time or tolerate the "ring" at the start of every receive.
CTCSS decode: squelch opens quickly when normal CTCSS decode
(an option) is enabled. There is a CTCSS page function that
has a distinct delay between receipt of carrier with CTCSS and
open squelch. I don't yet understand the use of this
"feature."
There is no SCAN button on the front panel. Scan is initiated
by holding the up or down button of the mike down for two
seconds. The scan is blindingly fast when compared to the
Alinco 590 that I used to have.
Memory: memory is divided into four "banks." Two for VHF, two
for UHF. Only one bank can be active for each receiver. I
consider this an advantage, but you may not. There are two
obvious (to me) uses for this configuration. First, you can
store frequencies for different uses in different banks.
Second, you can activate one 2m(440) bank in the main receiver
and one the other 2m(440) bank in the other receiver and scan
them simultaneously.
Heat management: After seeing the HUGE heat sink on the back
of the Alinco 590, the Yaesu 5100's sink seems too small. In
a key down experiment, the heat sink of the Yaesu got almost
too hot to touch before the fan kicked on. If I were planning
to run a packet station, I would definitely look into some
extra forced air over the back of this one. As it is, I'm a
bit concerned about how hot it will get mounted in my
dashboard. [Others people don't seem to have this problem.]
DTMF Decode and Scan: If you have CTCSS decode (an option)
enabled on a memory and you are scanning and there is activity
on that frequency but without the correct CTCSS tone, the 5100
stops scan, flashes the strength meter and then continues
scanning. It is slower than normal scan, but still quite
fast.
Attributed: Brian McMinn, N5PSS, brian....@amd.com
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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
[ed -- Note that there is a 5200 specific crossband mod that
appears later in this list -- I don't own a 5200, so I can't
test either. This key sequence works on my 5100.]
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, w...@uhura.neoucom.edu
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Tech Manual:
The technical manual for the 5100 is [information wise] pretty
spare. No additional operating notes or hidden secrets are
revealed. It is worthwhile for the alignment notes and
complete parts list. Call the number in your owners manual to
order.
Attributed: Bill Mayhew, N8WED, w...@uhura.neoucom.edu
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DTMF decoding:
Effect: display decoded DTMF tones
Note: [ed] this works on the FT-530, but not on my 5100. I'm
including it here on the chance that it works on the 5200.
Please try it on your 5200 (or 5100) and tell me if it works
for you.
1) Select frequency and turn on the code squelch
2) Press Function-Page(Code) to select a code memory
3) Dial up to memory #7 [the 5100 won't do this]
4) Watch the dtmf's scroll by as they are heard by the radio!
Attributed: jme...@ecst.csuchico.edu (Jeff Meyers)
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Crossband Audio Enhancement:
Effect: unmuffle crossband audio
Connect a 27K ohm resistor between the audio-in and audio-out
leads on the data jack (inside the shell of a mini plug, that
is). The mic element stays live while in crossband operation. It
is a good idea to remove the mic from the rig while cross
banding if you need/want to eliminate ambient audio.
Attributed: Bill Mayhew, N8WED, w...@uhura.neoucom.edu
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Wireless Mike (review):
The wireless mike sends audio over 49.85MHz, so it is can't be
used in high RF environments (like near computers). It
duplicates ALL front panel controls with the exception of the
power button.
It interfaces to the rig via a standard mic plug. The
receiving unit is only about 1'h x 2w x 1/2d.
[ed] The implications of this are that the entire radio can be
controlled via the microphone port! Too bad there isn't a
fancy *wired* mike with all the controls on it.
Several people have reported trouble with the mike -- enough
trouble for them to return it because of poor range and poor
audio. It works well if you sit on top of the pickup unit,
but then you don't need a wireless mike.
Attributed: Tony Pelliccio, KD1NR sys...@garlic.sbs.com
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The "P" Key on the microphone:
I was curious about that "P" key on my FT-5100, so I called
Yaesu and they explained the situation. They designed the the
mic to accommodate "future products". The "P" key is there to
be taken advantage of at a later date by other models. They
just did not want to re-design the mic again within a short
period of time.
Attributed: Will Collier, KB5WRK, COL...@gallant.apple.com
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Expanded Receive (5100):
Good Effect: enable extended receive coverage
New range: 128-180MHz and 420-475MHz
Bad Effect: disable automatic repeater shift selection.
Warning: This mod does not apply to the FT-5200 as the design
is somewhat different.
Warning: You must have a very steady hand or else! A
magnifying glass would help too.
1) Disconnect DC Power cable from radio. ALWAYS!
**Caution** NEVER TRY TO TAKE APART (DISASSEMBLE) THE FRONT
CONTROL HEAD. It will void your warranty.
2) Remove (6) screws from Top Cover of Radio and (6) screws
from Bottom Cover of radio.
3) Remove Top & Bottom Covers from Radio (Be careful of speaker
falling out).
4) Remove the (2) silver screws on each side of the radio
holding front control head to main body of radio.
5) Carefully pull away (a few inches) the Control Head from
the radio body. CAREFUL with the Ribbon Cables.
**NOTE** There are no numbers on the circuit board so you will
have to match up with the diagram below.
6) On the rear of the Control head locate, Unsolder and remove
jumper Pad R4072.
7) Solder across jumper pads: R4070 R4068 & R4064 (use wire or
0 Ohm resistor)
**NOTE** If you want to change the D/MR button on the
microphone to do Band Switching, now is the time.
See the next mod.
8) Install front control head, speaker, top and bottom covers
and reconnect power to the radio.
9) Press and hold [D/MR] [F/W] [REV] keys and turn on the radio.
Radio will now show 300.000 & 20.000 on display.
10) Set UHF Rx Low - Press [MHz] and dial 420.00, press [D/MR]
11) Set UHF Rx High- Press [MHz] and dial 475.00, press [D/MR]
12) Set UHF Tx Low - Press [MHz] and dial 420.00, press [D/MR]
13) Set UHF Tx High- Press [MHz] and dial 450.00, press [D/MR]
14) Set VHF Rx Low - Press [MHz] and dial 128.00, press [D/MR]
15) Set VHF Rx High- Press [MHz] and dial 180.00, press [D/MR]
16) Set VHF Tx Low - Press [MHz] and dial 140.00, press [D/MR]
17) Set VHF Tx High- Press [MHz] and dial 150.00, press [D/MR]
18) Set UHF offset - Press [F/W] then [RPT] dial 5.000 press [RPT]
19) Set UHF tuning - Press [F/W] then [REV] dial 25.0 press [RPT]
20) Set VHF offset - Press [F/W] then [RPT] dial 0.600 press [RPT]
19) Set VHF tuning - Press [F/W] then [REV] dial 20.0 press [RPT]
(VHF tuning step varies by state -- many use 15.0)
Diagram: [there are no tabs in this section - ed]
Ok, here's where it gets tricky, but so you know, a '|'
represents a jumper.
!Ribbon ! !Ribbon !
!Cable ! !Cable !
____!J4002 !_______________________!J4001 !_____________
! !________! !________! !
! Rear view of FT-5100 !
! ____ Control Head. !
! ! ! !
! !__! | | | | | !
! | | | | | | | | | | | | | | | | !
! R R R R R R R R R R R R R R R R !
! 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 !
! 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 !
! 5 6 6 6 6 6 6 6 6 6 7 7 7 0 0 0 !
! 1 1 2 3 4 5 6 7 8 9 0 1 2 1 3 4 !
!__________________________________________________________!
Stock US Jumpers After Mod. Jumpers
R4001 R4001
R4003 R4003
R4004 R4004
R4051 R4051
R4061 R4061
R4062 R4062
R4064
R4067 <- for D/MR button mod
R4068
R4070
R4072
This mod is on Delphi as FT5100.MOD and on anomaly.sbs.com.
Attributed: Tony Pelliccio, KD1NR sys...@garlic.sbs.com
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Band Switching via D/MR button on microphone (5100):
Effect: D/MR button on microphone performs band switching
rather than D/MR function.
1-5) as in above mod
6) Remove the jumper on Pad R4067
7) skip above step 7
8) continue with step 8 above
Attributed: Tony Pelliccio, KD1NR sys...@garlic.sbs.com
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[end of mod sheet Rev B]
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Band Switching or Tone Burst via D/MR button on microphone (5200):
Effect: change function of D/MR button on mike.
This is based on information from Yaesu in Japan.
The functions of pin 5 (the microphone button) can be altered
by changing jumpers in the control head. To find these
jumpers, see the section on packet radio in the ordinary
instruction book.
Control Head Jumper No
Pin 5 Function Closed Jumper Marked By X
1 2 3 4 5
D/MR X
Band X
1750Hz Tone Burst X X
Main band Busy Out X
Sub band Busy Out X
Call Channel X X
Main / Sub band busy out - When open SQL = 5 Volt DC
Closed SQL = 0 Volt DC
[ed - I'm not sure what this means since I don't own a 5200]
Attributed: John Newgas, G7LTQ jne...@cix.compulink.co.uk,
g7...@g7ltq.ampr.org
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Mute Level (5200):
Effect: [ed - I'm not really sure]
See above for location of jumpers, etc.
Mute Level Selection 1 2 3 4 5
No Mute
Minimum X
Middle X
Maximum X X
Attributed: John Newgas, G7LTQ jne...@cix.compulink.co.uk
g7...@g7ltq.ampr.org
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Crossband Repeat (5200):
Effect: crossband repeater
Bad effect: CTCSS function is lost
[ed -- there is another crossband mod in this list...]
This is based on information from Yaesu in Japan.
These jumpers are located in the main radio case. For
location, refer to the FT5200 Technical Guide.
1) Remove (open) JP5017 on the interface unit
2) Press and hold PRI button while switching on the power.
3) The FT5200 will now work as a cross band repeater.
4) The CTCSS function will be lost.
Attributed: John Newgas, G7LTQ jne...@cix.compulink.co.uk
g7...@g7ltq.ampr.org
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Extended Frequency Range (5200):
Effect: set receive and transmit range.
Bad effect: ARS gone.
This is based on information from Yaesu in Japan.
These jumpers are located in the main radio case. For
location, refer to the FT5200 Technical Guide.
1) Close (short) JP5001, JP5002, JP5003, JP5006 and JP5007
2) Remove (open) JP5004 and JP5005
The frequency range possible will now be approximately :
VHF Rx 110 - 180 MHz Tx 130 - 180 MHz
UHF Rx 330 - 480 MHz Tx 425 - 465 Mhz
The radio's alignment was done at the factory for your
original frequency bands and so there will not be optimum
behavior outside these ranges. Broadening the alignment will
sacrifice performance at usual frequencies. In practice, the
alignment does not need adjustment.
You can program the frequency limits now. [ed - note the
similarity (and dissimilarity!) to the 5100's program-limit
sequence above]
3) Press and hold [D/MR] [F/W] [REV] keys and turn radio on.
4) Program in VHF low edge of Rx
VHF high edge of Rx
VHF low edge of Tx
VHF high edge of Tx
5) Repeat for UHF in the same order.
I [John] have not done this so I can give no further advice on
programming.
Attributed: John Newgas, G7LTQ jne...@cix.compulink.co.uk
g7...@g7ltq.ampr.org
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Extended Frequency Range (5200):
[ed - yes, there are two mods and I include them both since
they are so different in style (and perhaps content).]
Effect: set receive and transmit range.
Bad effect: ARS gone.
The following explains how to expand the receive and transmit
frequency range of the Yaesu FT-5200 and how to enable the cross-
band repeater operation.
All the modifications are carried out on the interface board and
involve removing or adding links on jumper spots.
You will get considerably increased receive and transmit
coverage; however, you will lose the Automatic Repeater Shift
(ARS) feature. You may think this is an acceptable price.
Finally, it should be obvious, but during this procedure you
will obviously lose any stored memories.
1) Remove the control head and set on one side
2) Remove the upper and lower covers on the main chassis. For
convenience, remove the speaker, noting which way the two
pin pcb connector is oriented. [ed -- does it matter?]
3) Remove two side screws holding on the front of the chassis
and remove chassis front. (The chassis front is the
surface with the contacts for the control head.)
4) Locate a double row of ten by two jumper spots, numbered 1
to 20. The jumper configurations will depend on the area
for which the rig was intended. Note the arrangement if
you ever want to un-modify your radio.
5) Using a fine-tip soldering iron, set the jumper spots as
follows:
1 closed
2 closed
3 closed
4 open
5 closed
6 closed
7 closed
6) This completes the alteration for frequency expansion.
Reassemble the radio.
7) Reinitialise the radio by simultaneously holding D/MR, F/W,
REV and POWER. You must now program in the band limits.
The display will show a blinking "1" in the left-hand
memory box and "000.000" in the left-hand frequency
display. (Ignore the right-hand display for now). The
following limits are suggested, but the RF circuitry of the
rig will only cover slightly less. Use the dial or up/down
buttons to select the frequency and then press D/MR to
store it. The blinking "1" will increment.
VHF rx: 137.000 174.000
VHF tx: 137.000 174.000
(display will show blinking "1" and "300.000")
UHF rx: 410.000 470.000
UHF tx: 410.000 470.000
(Note: it is possible to set the RX limits wider than the
TX limits; for obvious reasons you cannot have the reverse
situation).
8) You can repeat step 7 above at any time if you need to
change the limits.
9) The pre-set repeater offsets are now no longer available
and you will have to set them up manually using the
instructions on page 16 of the manual. The Automatic
Repeater Shift (ARS) feature (also on page 16 of the
manual) will also have disappeared and you will have no way
of getting it back (except by changing the jumpers back).
To enable the crossband repeat, remove the link at
jumper spot 17. (Note, just below jumper spot 17 is a
separate jumper spot, not part of the group of twenty -
leave this alone).
Attributed: Hugo Cornwall
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Cross Band Repeater (5200)
Effect: enable crossband repeat
[ed - this is a continuation of the above]
1) You can enable the crossband repeater without altering the
frequency coverage. The only hardware alteration is the
removal of link 17.
2) To enable, turn on rig while holding down [RPT] button.
The rig is now a crossband repeater - you will get
confirmation of this from the display: the 100s position on
the two frequency displays will be replaced by a "R".
3) While in cross-band repeater mode you can change the
frequencies of each band.
4) The crossband repeater suffers from desense. It works
better at low power and even better if you use an external
diplexer and separate antennas. The more isolation between
the two bands, the better. As with all cross-band
repeaters, results will be poor if the UHF frequency is a
direct multiple of the VHF frequency. If you are planning
extended use of a crossband repeater, make extra sure that
the rig is adequately ventilated.
===========================================================================
Remote Control Mike Interface (5100, maybe 5200):
Effect: remote (wired) control of radio
The Remote Control Mike (from Yaesu) uses a serial data stream
interface in the microphone jack to control the 5100. This
simple hardware interface allows a computer to control the
5100 in the same way. It is somewhat similar to the CAT
interface I have built for my FT-757 HF rig, but mostly like
the interface described in the FT-912R manual (loaned to me
via a friend from Yaesu). When using my PC as the source for
the serial data, I used a MAX232 chip for a level conversion
between the +/- 12 volts levels on the computer and the 0-5
volt levels on the radio.
The serial data parameters are 4800 N82. The commands sent to
the radio are simple one byte instructions. The RMC mode ON
command (16) must be sent before any other command. When the
RMC mode is ON, a small LCD "RMC" icon will light on the
display (see owners manual under Display). Also, the Vol,
Sql, and Bal knobs are disabled when in the RMC mode because
they will be controlled via serial commands, but all other
buttons are still active.
The commands are as follows:
0 - RPT 12 - CALL 24 - SQL Up
2 - REV 14 - BAND 26 - VOL Up
4 - MHZ 16 - RMC 28 - BAL Right
6 - D/MR 18 - SUB 30 - BAL Left
8 - TONE 20 - PAGE 32 - SQL Down
10 - LOW 22 - F/W 33 - VOL Down
The interface I built simply wired mike port pin 7 to serial
ground and pins 1 and 3 each through a diode then together, to
the serial source. Note: I am not a hardware person! Use
this hardware at your own risk.
+----1 7-------------- GND
| 2 8 6 (These can be connected to a MAX232
| +--3 5 +-+-------- SER IN or the FIF-232C pins 1 and 3)
| | 4 | |
| +--->|---+ |
+----->|-----+
You can wire 1 and 3 together first, then through 1 diode, but
that disables the UP and DOWN buttons.
I'll continue to study this more. If anyone would like to
know more, or has any corrections or feedback, please email
me.
Attributed: Byon Garrabrant, KD6BCH by...@csulb.edu
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[end of mod sheet Rev C]
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Wireless Mike Problem:
Effect: Unexpected/Undesired Transmission
The wireless mike will pick up any transmission in the 49MHz
range (including cordless phones and baby monitors) and
re-transmit them on the ham bands. Don't leave your radio on
and unattended with this option installed.
Attributed: ke...@w8hd.org (Ken Hoehn)
The Fix:
There's a modification for the MW-1 that will only let the
radio key up when it receives both the 49MHz signal and an
infrared command from the MW-1 remote. I think they list it
in the users manual for the MW-1. [ed. with this enabled,
some have complained that the transmit is intermittent.]
Attributed: sys...@garlic.sbs.com (Tony Pelliccio)
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[end of mod sheet Rev D]
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