The foam has little effect on the cooling Wedge the piece ofįoam between the four coax connectors so that it covers the intake area for theįan. You can tell that it is open cell type constructionīy holding it up to your mouth and blowing air through it. I have been able to quiet the whine using the following method:Ĭut a 3" x 3" piece of soft packing foam that is about 2" thick. I have not entered the Alignment Menu,Īnd do not suggest that anyone do so, without the proper test gear and electronicĪ common complaint about the FT-847 is that the fan noise is irritating This radio seems to be very high tech in all. To exit the alignment routine, press POWER. The alignment is performed by pressing the MCK/W key while injectingĪ signal of the required frequency and level. In the alignment procedure, each alignment parameter is selected by rotating the Together, while turning the transceiver on again. Menu, you turn off the transceiver, press the UP, DWN, and FAST keys on the microphone This radio has an Alignment Menu in addition to a User Menu. George Nelson WB7VWK Email: have just received the Technical Supplement (Service Manual) for the Yaesu FT-847. Thanks to Tom KF4TRZ, Brent K9WV, and others for sharing this information. TX coverage will be 1.8-76mhz with no gaps.ĭO NOT TX BETWEEN 30-36MHZ - not only is it illegal, but you may damage the HF PA. This resets micro and you will also lose all your memories that you have entered. Replace cover and turn on radio while holding in the lock and fast buttons. This one has to be removed to go out of band on hf and 6m. Pad 1 is already shorted with a chip resistor.Ĭheck pad 6 and if it has a chip resistor on it. Near battery there are 6 solder pads numbered 1 thru 6.
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