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Hacker Chronicles 2
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HACKER2.BIN
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1318.FT-411
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FT-411
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Text File
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1990-10-09
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5KB
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118 lines
Hello to all the owners of the FT-411 OF YAESU,
I have this Hand held, and by playing with it,
I discovered a nice trick to increase it frequency coverage.
It is so simple that you don't even have to open your hand held.
All you have to do is:
1. Make sure that the power switch is off.
2. press the UP arrow and DOWN arrow together, at the same time
(those keys are also called A, and B.
and they placed at the upper right side of the keyped)
3. Keep pressing both buttons and turn the power on.
That's all.
Now you can receive 130-174Mhz, and transmit 140-150Mhz
CAUTON: When you do this modification the memories can be
erased.
Ayhow I think it is not the end, and there are some more
options.
If you do have some more information about this Hand
held,
Please leave me a msg with it.
FT 411 OUT OF BAND MODIFICATIONS.
---------------------------------
1) Open the front cover
2) Locate the C.P.U. unit (it is located on the
front cover ).
3) Locate Jumpers 1,2,3 and 4 , These are the
band setting Jumpers
4) Jumpers No 1,2 and 4 should be
disconnected ,and Jumper No 3 should
be connected.
5) Close the radio .
6) Apply power to the radio and turn it
on.
The display will initialize with
memory No 1 flashing and the
frequency display will show
1.000
7) Now , adjust the display to
the desired lowest receive
frequency
When done ,press VFO.
The memory CH will now
show 2 flashing .
8) Adjust the display to the desired highest receive
frequency When done press VFO .
The memory CH will now show 3 flashing .
9) Adjust the display to the desired lowest transmit
frequency
When done ,press VFO.
The memory CH will now show 4 flashing
10)
Now , adjust the display to the desired highest
transmit frequency
When done ,press VFO.
The rig
is now set for your programed band on transmit and receive.
COMMENTS
-------
1)
After the rig was programmed to the band and you want to change it
to
other ranges you will have to open the rig again and disconnect
Jumper No 3 then to apply power to the radio ,turn it on again
open it again ,connect Jumper No 3 back and repeat from steps 5 .
Any
comment and other information would be appreciated.
I was unhappy with the FT-411's "3" mode because the frequency had
to be entered starting with the 100 MHz digit, and the ARS function would
not work. I now use it in the "2" (normal) mode with the following mod.
I used the "clone" mode to dump the FT-411's ram to a computer. It's 9600
baud, 1 start bit, 1 stop bit, CMOS logic. 544 bytes are dumped when the
up arrow is pressed. Starting with byte $211 are the upper and lower
transmit and receive frequencies, stored in BCD. I changed these to the
limits I wanted. My FT-411's upper PLL limit is 195.4 MHz, so I used
195 MHz. The lower limit MUST remain set to 130 MHz (magic number) or
the keyboard entry of frequencies will start with the 1 MHz digit .VS.
the 10 MHz digit. To put the data back into ram, just press the down arrow
and send the new 544 bytes to the FT-411. You could also just clone an
H.T. that has the limits you want. You can not clone a mode "3" H.T. to
a mode "2" H.T., however. The mode is contained in the first byte, which
must match.
HAM on Rye is not responsible for any modifications performed
by the user. This file is intended for educational purposes
and should not be used to extend trasmitting ranges beyond
which the receiver was designed and approved.
HAM on Rye BBS * (814) 333-4111 * 1200 - 2400 (8-N-1)