19-07-1998 Expanded Receive
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.
Disconnect DC Power cable from radio. ALWAYS!
**Caution**
NEVER TRY TO TAKE APART (DISASSEMLBLE) THE FRONT CONTROL HEAD. It will void your warranty.
Remove (6) screws from Top Cover of Radio and (6) screws from Bottom Cover of radio.
Remove Top & Bottom Covers from Radio (Be careful of speaker falling out).
Remove the (2) silver screws on each side of the radio holding front control head to main body of radio.
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.
On the rear of the Control head locate, Unsolder and remove jumper Pad R4072.
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.
Install Front Control head, Speaker, Top and Bottom Covers and Reconnect Power to the Radio.
Press and hold [D/MR] [F/W] [REV] Keys and turn on the Radio. Radio will now show 300.000 & 20.000 on Display.
Set UHF Rx Low - Press [MHz] and dial 420.00, press [D/MR]
Set UHF Rx High- Press [MHz] and dial 475.00, press [D/MR]
Set UHF Tx Low - Press [MHz] and dial 420.00, press [D/MR]
Set UHF Tx High- Press [MHz] and dial 450.00, press [D/MR]
Set VHF Rx Low - Press [MHz] and dial 128.00, press [D/MR]
Set VHF Rx High- Press [MHz] and dial 180.00, press [D/MR]
Set VHF Tx Low - Press [MHz] and dial 140.00, press [D/MR]
Set VHF Tx High- Press [MHz] and dial 150.00, press [D/MR]
Set UHF offset - Press [F/W] then [RPT] dial 5.000 press [RPT]
Set UHF tuning - Press [F/W] then [REV] dial 25.0 press [RPT]
Set VHF offset - Press [F/W] then [RPT] dial 0.600 press [RPT]
Set VHF tuning - Press [F/W] then [REV] dial 20.0 press [RPT]
(VHF tuning step varies by state -- many use 15.0)
Вот после замены батареи выставил ка тут описано..всё заработало
