ICOM IC-T41 
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                             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.
 
T41: 108-136 Mhz AM mode (RX only) 136-174 Mhz FM mode (RX) 440-490 Mhz TX/RX
     
T41: 400-490 Mhz