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ICOM IC-T21
EXPANDED RF
1- Remove battery and antenna.
2- Open the radio and locate the Logic Board.
3-Locate and remove diode D-15 (RX mode).
4-Locate and remove diode D-14 (TX mode).
5-Locate the W2 on UHF PLL board next to IC2 near board edge (board # B39219)
6-Install chip jumper position W2 (800 Rx mode).
7-Reassemble the radio.
8-(Press and hold B & # and turn power ON.
T21 800Mhz = In UHF select ( direct entry 100) and direct enter frequency.
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T21: 108-136 Mhz AM mode (RX only) 136-174 Mhz FM mode (TX/RX) 440-490 Mhz RX
T21: 108-136 Mhz AM mode (RX only) 136-174 Mhz FM mode (TX/RX)
T21: 800-900 Mhz (RX only)