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I have a yaesu 757gx

My yaesu 757gx2 when it get hot ther no power and mod

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Transceiver signal interference


The FT-840 uses a die-cast RF power amp with thermally switched fan to ensure full power output (up to 100 watts). The digitally synthesized local signals ensure clean, low-noise transmitter output on all HF amateur band. There might be no AC line interference. it has strong Rf output. any AC line intersect does not affect its radio performance. Check and adjust RF power so to maintain proper output. some times more RF power generated at the output may cause interference. adjust Rf power..Even some unfiltered Noise getting the other end of the end may calso cause interference. Check for any Ripple voltages present at the output. Contact authorised service station for further Rectification. thank you shanth

Dec 23, 2007 | Transceivers

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Open the frequency from 137-173mhz in th-th-k2e transceiver


google mods dk look under kenwood modifications. you will have to join membership is free basis a fee for premium downloads. you can get this mod free.

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Need mod for 11 meter ts 830 s


check on dxmods.com they may have the mod you are looking for

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Yaesu Ft 2200 transceiver operators manual


Found a couple of ham radio sites that had manuals for sale or free downloads. Took several hours on net to find but it worked. had at lest 3 responses in 24 hr period of time.

thanks for yur help.

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Yaesu ft230R. I haven't used it for awhile and can't find manual. Can't figure out how to enter the frequency for the tone sqelch. For instance, how to enter the 110.9 tone frequency. Bob WB6LND


You have to ADD a PL Tone board. There should be a front panel switch that says TS that is the on/off power to the connector. There is a connector inside for +12VDC, switched ground and Encoder input. Look online for the schematic, or contact CommSpecialists for the sheet that lists the colors of the wires on the connector and where you connect them when you add a CTCSS Tone board.73's

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1 Answer

Find manual for yaesu ft2700rh


I have had one of these fine radios since I bought it new 25 years ago. I don't have the original manual but I have a copy of one. Send me your e-mail address and I'll scan it and send it to you.

N1ETN

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1 Answer

AC line interference


I experienced very similar or the same problem with FT-840. When power is inceased over about 50 W, an AM on RF signal arises. Even when TCVR is supplied from accu and connected to dummy load. Period of interferencing signal is about 7.5 ms (130 Hz), so it cannot be hum from mains. I have not opened the PA block yet but i guess, it could be caused by damaged capacitor(s). Jiri

Dec 23, 2007 | Transceivers

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