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FT-100
and FT-100 D
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Transmit
coverage for FT-100 D |
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Be careful not to transmit outside the Amateur Bands.
RX: 30KHz-824MHz, 849MHz-859MHz, 894MHz-961MHz.
TX: 1.8MHz-30MHz, 50MHz-54MHz, 140MHz-174MHz, 420MHz-470MHz.
- Remove Front Panel from radio and open the
rear cover from the Front Panel unit. Be careful, a cable connects
them together.
- Locate and remove R6035 (1) and R6036 (2)
on the display board.
Note: The factory removed R6035 on my radio so I only had to
remove R6036. You should end up like the picture below.
3.
_____________________________________________________
4. /
5. / _ =
6. | =
7. | _ = ! ! ! ! ! ! ! !
8. | = 1 2 3 4
9. | ! ! ! !
10. |
11. |
12
Back of front panel. Top left corner.
Remove jumpers 1 & 2, leave 3 & 4.
- Reassemble and install the Front Panel on
the radio.
- Press and hold [DWN] and [STEP] keys;
while holding them in, press and hold in the [PWR] switch for 1/2
second to turn the transceiver On. Now let go of all keys.
The display will read "r on" for a 1/2 second or less (it may be so
quick that you don't see it but continue with the mod).
- Set the dial frequency to 375.72727MHz and
turn the power off.
Note: You may need to use LSB, USB, or CW to get the last
digit.
- Press and hold [DWN] and [STEP] keys;
while holding them in, press and hold in the [PWR] switch for 1/2
second to turn the transceiver On. Now let go of all keys.
The display will read "HF on" for a 1/2 second or less (it may be so
quick that you don't see it but continue with the mod).
- Set the dial frequency to 549.61163MHz and
turn the power off.
- Press and hold [DWN] and [STEP] keys;
while holding them in, press and hold in the [PWR] switch for 1/2
second to turn the transceiver On. Now let go of all keys.
The display will read "vU on" for a 1/2 second or less (it may be so
quick that you don't see it but continue with the mod).
- The modification is complete. Turn the
radio off and back on to continue.
Modified
my FT-100D
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removing the first two
jumpers and doing the
acrobatic 3 switch power up
and all that.
Seems to work on HF. On VHF
and UHF power seems quite
low out of band, but that's
not a big deal for now. Just
for testing purposes I
programmed in the FRS/GMRS
frequencies (462.5625 etc)
so I could listen to the
activity on that band. I can
hear them quite well, so
far, so good.
Problem comes when I try
transmitting. I cut back the
power by setting menu 24 to
0 or 1 which is plenty of
power for testing. The
transmit signal is about 8
khz higher than the
displayed (receive)
frequency.
I thought it must be the
walkie/talkie, so I got
another one I have, same
thing. WOW!!! I'm not very
happy, I'm not at home right
now and don't have the
equipment to explore this
further. I just hope that
this transmit/receive
offsett is just a localized
phenomena and has not offset
the whole range of the
radio.
Anyone out there care to
check this particular
frequency range out on their
modified radio. One thing
that happened when I was
powering up the radio for
the first time, I didn't see
the the "r ON" appear. I did
see the "HF ON" and "vU ON"
though but not the first
one. Anyone has something to
say, I'm all ears.
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Note if the 2 SMD diodes not are present,
then you should begin with step 4.
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Second set of
menu functions |
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Their is a second set of menu functions F01 to F59.
WARNING: changing these will reset all the memories.
I want to warn you do not change these values unless you are sure of
what you are doing.
To get them turn transceiver off. Press and hold the A,B,C keys; while
holding them in, press and hold in the [PWR] switch for 1/2 second to
turn the transceiver On. Now let go of all keys. Then press and hold
func key for 1/2 second to get to the menu and then rotate the select
knob to get to a second menu (F01 to F59) it's after #66 or before
#01.
When you turn the rig off and back on it returns to normal menu.
Here is a list of the 59 second menu functions.
Function Setting in my radio
F01 144 RF GAIN 166
F02 430 RF GAIN 166
F03 HF RX IF G 098
F04 50 RX IF G 112
F05 144 RX IF G 108
F06 430 RX IF G 082
F07 S FULL SCALE 144
F08 SSB SQL 033
F09 FM N SQL 088
F10 FM RF SQL 056
F11 HF IC ALC 023
F12 V/UHF IC ALC 022
F13 HF PO 10W 026
F14 HF PO 50W 083
F15 HF PO 100W 123
F16 50 PO 10W 025
F17 50 PO 20W 045
F18 50 PO 50W 083
F19 50 PO 100W 123
F20 70 PO 10W 063 <<< 70 MHz
F21 144 PO 20W 065
F22 144 PO 50W 120
F23 430 PO 20W 139
F24 1.8 TX IF G 076
F25 3.5 TX IF G 069
F26 7 TX IF G 063
F27 10 TX IF G 063
F28 14 TX IF G 067
F29 18 TX IF G 071
F30 21 TX IF G 072
F31 24 TX IF G 072
F32 28 TX IF G 075
F33 50 TX IF G 104
F34 70 TX IF G 127
F35 144 TX IF G 097
F36 430 TX IF G 093
F37 ALC METER 196
F38 HF PO METER 170
F39 50 PO METER 172
F40 144 PO METER 105
F41 430 PO METER 063
F42 HF REV ALC 034
F43 50 REV ALC 034
F44 70 REV ALC 127 <<< 70 MHz
F45 144 REV ALC 173
F46 430 REV ALC 060
F47 SWR METER 141
F48 OVER HEAT 1 230
F49 OVER HEAT 2 235
F50 CW CAR LEVEL 166
F51 AM CAR LEVEL 113
F52 FM TX FREQ -32.470
F53 TRX LSB CAR 0.110
F54 TRX USB CAR -0.010
F55 blank
F56 blank
F57 DESTINA HF USA < JPN,JAIA,STD,EU,FRAN,BEL,GER,USA,AUS,UT
F58 DESTINA V/U USA < JPN,USA,EU1,EU2,EU3,EU4,AUS
F59 blank
OOPS! When I looked at the F57 and F58
choices on my radio and set them back to USA the radio initialized and
I had to reprogram the memories. The TX mod was still ok.
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Connect other
microphone to Yaesu FT-100 |
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Here´s a description on how connect
UP/DOWN and PTT to Yaesu FT-100.
Here below does I a description how
components shall connect to radio.
6-pins modular jack
Mic-jack Yaesu FT-100 / 90 / 8100.
Pin 1: SW 2 multi-function switching
Pin 2: N.C. (9600bps packet data output FT-90)
Pin 3: + 9 v
Pin 4: GND
Pin 5: Microphone Input
Pin 6: SW 1 PTT, UP och DOWN
| I was interested to see Björn Karlsson's
information on how to "Connect other microphone to Yaesu FT-100",
as I have been looking for some time for a way of using PTT,
rather than VOX, with another microphone.
My curiosity pushed me to try the same
circuit on SW2 and it works. It gives you the P, P1 and P2
buttons. However, there was still the ACC button missing, so I put
a variable resistor from SW1 to ground and found a fourth
position.
The circuit below gives you PTT, UP,
DOWN, ACC, P, P1, and P. At least, it works on my rig. Don't
forget that you can programme the functions of P, P1 and P2 on the
FT-100.
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FT-100
Thermal modification |
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Hi all you FT-100 users!
On 2m and 70cm you all noticed that the
cooling fans do not run at slow speed on stand by, like on HF and 6m.
This causes the radio get warm/hot for just
doing nothing.. and that will shorten the lifetime of the parts.
Here is how you could resolve this problem by
just adding 1 51ohm 1/2watt resistor between one of the black wires of
the fans and ground, for instance the chassis. See picture below for
my solution. Open up the bottom of the radio to get to the fan wires)
This mod will cause the fans always run at
low speed. and when transmitting the fans will go fast as normally, so
you're radio stays cool!!.
Lot's of fun with this mod!.
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Using the Heil HMM-Y mobile mic with the
FT-100D |
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I found that the HMM-Y mic
output was understandably lower
in level than the stock electret
based mic. In order to
accommodate this I performed
surgery on my FT-100D, changing
R1334 (SMT resistor) from 10k
Ohms to 1k, thereby increasing
the mic pre-amp gain by about 14
dB.
(I don't recommend anyone doing
this unless they have an SMT
soldering station, good SMT
experience and very steady
hands. You can easily ruin the
PC board).
I also experimented with "full
range" and "DX" elements in the
Heil mic, the 100D processor,
the MIC DSP settings and the
carrier offset controls. Using a
monitor receiver with the 100D
running into a dummy load I
converged on the best setup.
Very simple.
For rag chewing the "full range"
element gets great audio
reports. I brought the TX
carrier injection up to +200 Hz
which removed some excess bass
response. No MIC DSP is used
(i.e. setting = OFF). Processor
is off. MIC GAIN setting is
around 50 to 60 with the Heil
mic and the FT-100D preamp 14 dB
mod. Before increasing the
preamp gain I had to speak
loudly with the MIC GAIN set to
100; no good!
So my search for decent 100D
transmit audio is finally over,
after several years of fussing
around with the stock mic,
trying a couple modifications on
the stock mic and trying every
imaginable combination of
settings on the rig (and
spending about $100 for the Heil
mic and AD-100 adapter).
For contesting I think the DX
element or perhaps just the
processor with the "full range"
element will work well. The DX
element has an annoying quality
to it, but I suppose you want
that when you're trying to
scream through a pileup.
73 N6AF Chas |
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I found on my FT-100D that the
squelch threshold was the same
for FM and SSB. As I change from
144 Mhz FM operations to HF SSB
operation I would like to have
the squelch open up in SSB mode
and then close when going back
to FM mode without having to
change the SQL/RF control all
the time.
This can be accomplished by
changing Menu F08 (SSB SQL) in
the secondary menus. I set Menu
F08 value from 003 to 050 and
got the squelch operation I was
trying to obtain.
See mod forto access Menu
F08. |
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| FT-100D
expanded Frequency modification |
ATTENTION
The KB2LJJ takes no responsibility for any damage during the modification or for
any wrong information made on this modification.
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