This manual is downloaded from the FoxTango site, Yaesu. FRG HF Receiver. Survival Guide. Revision 2 march. If you want to work on your FRG, it is a must to have the manuals and schematics. See: The manuals are very informative and deal. The purpose of this manual is to provide the reader with information critical to the nance of the FRG general coverage communications receiver.
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I tried it, but was not happy with the look of it, It was no Frog anymore, so I put the filter back. The AM Led was checked, and was changed because it seemed at the end of his mznual.
YAESU FRG SCH Service Manual download, schematics, eeprom, repair info for electronics experts
To repair the board, it was necessary to take the PLL board out of the receiver. Comments 0 No comments yet.
Another very good source for free manuals is http: You can find now and then a mint receiver on the market. Another is 1Fthis receiver is made in June See pictures from this mod. While I was at it I msnual all diodes and inspected the rest of the board very carefully.
Yaesu FRV, Yaesu FRV VHF Converter for FRG
I made a truth table of the 6 input pins of the MB, and soon discovered that pin 15 had no true 0 or 1, but had always a voltage of 3.
The Xtal oscillator was working and at the good frequency. The cores are not interchangeable, so do mabual at a time. Copies of the User Manual and the Service Manual can be obtained from the Fox-Tango website, by far the best website for all classic Yaesu equipment.
If this is carefully done, you can put the switch back together again without problem. Try to make 7 volts as close as possible. If the receiver is switched off, the display is off, however power to the IC is always on. Scanned document, reading partly badly, partly not readable.
The manual says between 1. I use it also for repainting and refill markings on boat anchor receivers, like the RA and Racal.
A change for 4x 1N or another bridge rectifier is also possible. The counter displayed only a right-hand zero, the clock was partially working, the AM Led was on all the time, the ON and OFF timer had the same time, only the countdown timer was working.
Free Service Manuals
If you have the memory option, it is best to use the backup battery adapter. You acknowledge that all comments express the views and opinions of the original author and not those of the administrator. CFS H6, 6 khz A wire is soldered to the connection of the 10k resistor and the 22nf condenser and is brought out of the VFO, together with the 3 existing wires.
The OM who worked on this receiver was clearly not qualified to work at this kind of equipment, and has a BIG soldering iron… After reinserting the board, I had now signals at all bands.
The tune voltage is HF decoupled by a 10k resistor and a 22n condenser. Be careful with the lamp holder on the VFO, see above!!
The FRG is a half synthesizer, half conventional design, and is nearly identical to the Kenwood R Service and User Manual. If step 8 and 9 is done, you have to re-align T09 and T10 for maximum signal.
While I had the meter out, I searched my junk box, and found a VU meter from an old cassette deck, which was frf-7700 near- perfect fit. D43 was defect and displayed a resistance of 5 K-ohm in both directions. All mode communications receiver. If you want to work on your FRG, it is a must to have the manuals and schematics. I checked the resistance of the movement and even mannual was almost the same. Removing the paint altogether from the sides is also a possibility, it can be done with thinner and rubbing with an old cloth, you have just to be careful with the front itself, the paint there is quick damaged.
I tested the counter amplifier and discovered that the 74LS did not get a proper signal. The stability of the VFO is just the same as before, and also the calibration of the analog scale is not affected. Be carefully with the coil cores of the PLL, they have been stabilized by a lot of wax, which can give some trouble. The pages are in German, so I will give a translation of the mods, for the benefit of all of you who are not fluent in that language.
I saw one used!!! One of my sets had a bad mode switch. This wire has to be some 10 cm longer than the others.