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6300 Keying Kenwood TL-922a
Options
John Watson W4JCW
Member ✭✭
I have the 6300 connected to the 922a properly, but when I move the amp to operate, it keys the amp???
0
Answers
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Mike-VA3MW Administrator, FlexRadio Employee, Community Manager, Super Elmer, Moderator adminOptionsHi John
The TL922 is a high power amp keying line. You will need a keying buffer in place.
I assume you have the RCA connected to TX1.
Mike0 -
Do you have an isolation device between the Flex and amp? If I recall, the TL922 keying may pull more current than the Flex relay can handle,0
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I use an Ameritron ARB-704 between the 6600 and the TL922. Never checked if it was necessary due to how much the TL922 pulls but I have always used 704 between whatever radio I had and the amp. My logic went to better safe than sorry.
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Had a TL922A **** an Icom 706 Mk II G keying circuit You must get a 704 unit !!!0
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With the behavior you describe, it is most likely that you have caused the keying device (transistor or other) to fail in a shorted condition inside your 6300. Time to open a help desk ticket and let Flex sort it out for you, which will most likely result in sending it back to them for repair. Older amps, like the TL-922A. draw far too much current on the keying relay coil for modern day transceiver keying circuits (Flex is no exception). The ARB-704 is an absolute necessity, so get one before you get the 6300 back from repair!1
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John,
If the high voltage/current did not destroy the chip, you might try removing the DC from the radio and let the internal chip reset, but DO NOT connect that amp directly to the radio, needs a keying relay inbetween the radio and that amp.
Dudley
WA5QPZ
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Eric how is the connection made (which wires go where) from the 6300 to the 704 to the amp?
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