From: "Pieter" I've received some preliminary information about the ft-847 mod. It involves taking the cover off(which one I don't know) and solder bridging jp1002 and jp1003 then powering up with the lock button pressed. According to my source this will open the radio completely. According to the mod, transmitting in the range of 33 - 37 MHz can damage radio. I'm still waiting for my radio to try it on. If anyone tries it please let me know the tx range. Perform this mod at own risk.  --Peter George Nelson WB7VWK     Email: WB7VWK.GEORGE@worldnet.att.net I have just received the Technical Supplement (Service Manual) for the Yaesu FT-847. This radio has an Alignment Menu in addition to a User Menu. To enter this Alignment Menu, you turn off the transceiver, press the UP, DWN, and FAST keys on the microphone together, while turning the transceiver on again. In the alignment procedure, each alignment parameter is selected by rotating the SUB-TUNE dial. The alignment is performed by pressing the MCK/W key while injecting a signal of the required frequency and level. Pressing the MENU key after a setting is made stores the entry. To exit the alignment routine, press POWER. This radio seems to be very high tech in all. I have not entered the Alignment Menu, and do not suggest that anyone do so, without the proper test gear and electronic knowledge.   Dave Sublette K4TO A common complaint about the FT-847 is that the fan noise is irritating (and it is).  I have been able to quiet the whine using the following method: Cut a 3" x 3" piece of soft packing foam that is about 2" thick. Be sure to use the "open cell" type of foam.  You can tell that it is open cell type construction by holding it up to your mouth and blowing air through it. Wedge the piece of foam between the four coax connectors so that it covers the intake area for the fan.  The whine will then disappear.  The foam has little effect on the cooling of the radio.  I think it works because the foam causes turbulence in the air flow, disrupting the formation of the sound of the whine, which is probably generated by the tips of the fan blades.  It may even slow the fan a bit, which stops thenoise.  However it works, it works.  I can't even see it when it is in place. It should also have an added bonus in that it will filter dust from the air before it enters the radio. Hope this works for you.