If I get the chance to do this, I will report back on how it went. This will not be as easy for the HF side of things, as one finals has quite a few bottom board side lands that would be cut or damaged. I needed to move the filter caps (input and output) closer to the body of the transistor, but otherwise it worked perfectly. On the VHF/UHF side I was able to grind away enough board and fit the new final in place. IC 706 SERIAL NUMBERS DRIVERThe driver (old MRF1508, New MRF1518) is different on the new board, but is basically a newer design, with the same spec's. IC 706 SERIAL NUMBERS SERIAL NUMBERCE symbol on the serial number seal, comply. The HF transformers and componets are the same between the two boards. Bekijk en download gratis de Icom IC-706MKIIG Audio / video-ontvanger handleiding (pagina 75 van 75). Performance criteria is actually almost exactly the same. The primary difference between the old final and new final, is the package. The Icom IC-706 covers all nine HF ham bands plus 6 meters and 2 meters This radio is at home in a base or mobile configuration. I had the unique oppurtunity to evaluate the old 706 MKIIG PA unit and the new one. The Serial number change is OLD > 0xxxxx, Newer 15(or 16)xxxxx. The 706 MKIIG has had more cases of final failure than the 775, more MK2G's sold out there too, than the 775.īeware buying used MKIIG's. The 775(DSP) PA unit is also pre-designed to use the MRF140's, the MKIIG cannot. The 775(DSP) has had very few cases of Final failure. You can swap out PA units for about $500! This includes the finals (no drivers)(706MKIIG only) A bit spendy, but at least there is a fix. The PA in the MKIIG was changed in about 2004 to a newer (totally different RD70HV)( New/Old Finals pic) device. I have tried to contact a few sources, and a couple of parts hunters. The finals (SR(F or K)J7044(MP) are no longer available. who used the J7044 MosFet for a final, have a terminal issue. These two, probably others, and any manuf. Tx power is radically different on different bands, probably the detwector diodes on the filter unit. This is used in all the 706 series radio's, and the symptom is the radio won't turn on, and you hear a "click" "click" (relay closing and opening)ĭead, no Rx/no Tx, check the 5v regulators on the PLL unit, there are 3 of them. If you get a DC surge, there is a 4.7 ohm surface mount resistor on the bottom side of the PA unit, that is a fuse resitor for the regulators on the PLL unit. All stated specifications are subject to change without notice or obligation. IC 706 SERIAL NUMBERS 64 BITThe programs works in Windows 2000/XP/Vista/Windows 7 32 and 64 bit and. To do this it's employed the CI-V socket locate behind Icom 706 and a small interface that converts the signal to adapt it to personal computer serial port. The DSP unit can get oxidized connections, resulting in garbled SSB operation/Mode mishaps/and dead modes (while other modes work fine) simply unplug the flex cable, and plug it back in, carefully. The IC-706MKIIG meets MIL-STD requirements and strict environmental standards for shock (MIL 810C, D, E) and vibration (MIL 810C, D, E). The program I m proposing is for interface the transceiver Icom model 706 in its three versions to personal computer.
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