********************************************************** Expanding rx frequency range: ********************************************************** By keyboard only: Press SET end DTMF keys simultaneously while turning ON the power switch. Hold the keys a few seconds. By means of diode EUR version: Remove the D13 diode on the logic unit. For ITA version: Remove D8 will open AIR band only. Remove D9 will open 430 and 800 MHz bands Cut W1 jumper open all bands. RX frequency range is now: 118.000 - 135.995 MHz (AM) (VHF section only) 136.000 - 174.000 MHz 320.000 - 479.000 MHz 830.000 - 999.990 MHz (UHF section only) ********************************************************** Expanding the TX frequency range ********************************************************** - 144 MHz band only: Remove diode D17 on the logic unit. - 432 MHz band only: Remove diode D16 on the logic unit. - All bands: Remove chip-jumper W2 on logic unit. ********************************************************** Restricting frequency range ********************************************************** When diode D7 is present the RX and TX frequency is limited to 144 - 146 MHz and 432 - 438 MHz provided none of the above mods have been made. ********************************************************** Cross Band Repeater ********************************************************** Removing D14 will allow use of cross band repeater and DTMF remote control functions. Activate "hang up time" type repeater: Push the VHF and UHF main knobs and the SET/LOCK key for more than one second. Activate "no hang up time" type repeater: Push the VHF and UHF main knobs and the SET/LOCK and DUP keys simultaneously for more than one second. To return to normal mode, press SET for more than one second. ********************************************************** ========================================================== This mod from: ftp.cdrom.com - has been slightly modified. ========================================================== Hi there! From Icom USA comes this mod sheet for the 2700H: RX Expansion Modification ========================= 1. Remove Top Cover. (6 Screws) 2. Remove Bottom Cover. (6 Screws) 3. Remove Front Display. (4 Screws) 4. Locate the Logic Board. 5. Remove W1 from the logic. 6. Hold [SET], [SPCH] and turn radio on. Expanded Frequency Range AM Mode 118-136 MHz FM Mode 138-174 MHz 350-470 MHz Tx Expansion Modification ========================= 1. Remove D16 and D17 2. Hold [FUNC], [A], [CLR] and turn the radio on. FM Mode 138-174 MHz 350-470 MHz