Icom ID-5100 Expanded TX & RX mod

[Moleculo]

There are several different mods to extend the transmit and receive of this radio; the one you use will depend on the region your radio is designed for.

TX Modification

All region TX mods require you to remove the bottom cover and remove diodes D312 and D310. After modification, TX range is:
137.000 - 174.000 Mhz
400.000 - 470.000 Mhz

RX Modification

For the Americas version of the radio, no mods are necessary for complete RX coverage.

European radios require removal of D316 and then the key sequence; Asian radios only require the key sequence. The key sequence is as follows:

1. Turn off the radio
2. Left AF VR set to 9:00 o’clock, and Left SQL VR set to counter clockwise.
3. Right AF VR set to 9:00 o’clock, and Right SQL VR set to 12:00 o’clock
4. Turn on the radio by pushing “POWER” key, during touch “HOME”

After the RX expansion is performed, frequency range is:
118.000 – 136.995MHz (AM)
137.000 – 174.000MHz (FM)
375.000 – 550.000MHz (FM)

Here are the pictures of the modification locations:

Bottom cover removed

Diode locations

 

[TommyZ]

Thank you for posting this info. Does the radio transmit full power on the expanded frequencies? I'm thinking about replacing my stand-alone mobile GMRS radio with the 5100 so I can use it for 70cm, 2m, and GMRS.

 

[Moleculo]

Thank you for posting this info. Does the radio transmit full power on the expanded frequencies? I'm thinking about replacing my stand-alone mobile GMRS radio with the 5100 so I can use it for 70cm, 2m, and GMRS.

Yes it does.