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Yaesu FRG-7700 receives AM, not SW
On Feb 4, 5:25 pm, saki wrote:
I have a Yaesu FRG-7700 shortwave receiver, bought new in 1981, with a problem. I haven't used it in about a year. It's been stored on a shelf indoors. Turning it on again I find that alignment is fine, digital readout is fine, AM reception is fine but the radio won't hear anything above 1650 MHz except white noise. Antenna length affects volume of white noise but there are no discernible signals, nothing that causes the s-meter to move. I've checked the attenuator in the back (DX/Local), which works normally in the AM frequency range. The front panel ATT, gain and mode are all working well. I just can't get shortwave out of it. My Icom R75 and Drake SW4-A hear signals on the same antenna used by the FRG-7700. Is there something I should be focusing on to troubleshoot, or is this something I should have a Yaesu/ham gear repair person examine? Any help would be much appreciated. ---- SAKI, Yaesu FRG-7700 Information WebPage http://www.crocuta.com/FRG7700/index.html http://wiki.radioreference.com/index.php/Yaesu_FRG-7700 The "Yaesu FRG-7700 Shortwave Receiver - Survival Guide http://foxtango.org/frg7700/FRoG-7700.htm Fox Tango International -by- Wim Penders [PA0PGA] Modern Shortwave Receiver Survey @ DXing.Com http://www.dxing.com/rx/frg7000.htm Yaesu FRG-7000 General Coverage Communications Receiver "Recently Sold" Radio Equipment @ Universal-Radio.Com http://www.universal-radio.com/CATAL...r/frg7700.html Yaesu FRG-7700 Shortwave Receiver http://www.universal-radio.com/used/sold099.html Notes: The Yaesu FRG-7700 covers 150 kHz to 29.9 MHz which is tunable in 1 MHz bands. This multi-mode radio has a digital and analog display. It also has a built in 12 hour clock-timer and S-Meter. There is a carry handle on the right side. This radio has the optional MU7700 memory unit installed which can be fine tuned. * The Rear Panel has Dual Antenna Inputs http://www.universal-radio.com/used/ub53rear.jpg http://www.universal-radio.com/used/u865ant.jpg and timer relay contacts. The Yaesu FRG-7700 Receiver Users Group @ Yahoo! http://groups.yahoo.com/group/FRG-7700/ hope this helps - iane ~ RHF |
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