Modifications for the ICOM - RogerK

other wires come in. Take the cable over to the VCO UNIT enclosure, where there are 2 small holes. Pick the hole closest to D4,solder the shield to the outside of the metal case and feed the inner conductor through the hole and direct solder to the cathodeof D4 1SV50, keep the lead as short as possible.This modification is read 740 times.top of page19-07-1998(IC-2700) IC-2700 RX/TX expansionRX Expansion Modification1. 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 RangeAM ModeFM Mode118-136 MHz138-174 MHz350-470 MHzTx Expansion Modification1. Remove D16 and D172. Hold [FUNC], [A], [CLR] and turn the radio on.Expanded Frequency RangeFM Mode138-174 MHz350-470 MHzThat's what Icom's sheet said. I didn't follow it when I modified my radio and it worked very well. Here's what I did:1. Remove power and antenna from the rig.2. Remove the face plate from the rig (careful with the small hookup cable that attaches to the logic board).3. Locate the "Zero-Ohm Resistor" W1 and cut it out with a fine-tipped set of wire cutters. W1 is clearly marked on the boardand is along the top edge, just to the right of center of the logic board. In my rig, W1 looked like a 1/8 Watt resistor, solidwhite in colour.4. Using the same pair of fine-tipped cutters, remove D16 and D17. They're the first two diodes slightly below W1, goingtowards the LEFT side of the rig.5. Carefully re-attach the face plate, mic, antenna and power.6. Press SET and SPCH together and power on the rig. Keep the buttons depressed for about 4-5 seconds as the radio goesthrough a reset. ALL MEMORY INFORMATION IS LOST!!!.7. Re-program in your memories and there you have it!Futile Attempt at a diagram:Front View with face plate detached.________________________________________________________________________| DDDDD W || || D67 || ____ || |HEAD| ___ || ~~~~ |MIC| ||______________________________________________________________________|Where D = Surface Mount Diode PackageW = Jumper W1