This is my first time posting so I hope it works!!
I have a FT-620B that has a curious problem, when I bought it half a =
year ago all the modes worked. AM,CW,USB,LSB, this rig does not have =
FM. Now the other day I decided to once again try it on CW but neither =
CW or AM seem to work any more. On CW with key down I hear the relay =
click to transmit and I hear the sidetone but the meter isn't showing =
any power out on the radio, I also don't see any power out on a =
wattmeter. However you can hear the relay click over to transmit and =
the receiver quiets. On AM for this radio you are supposed to set the =
AM CARRIER control to the desired power out by the meter, I also no =
longer see any power out by the radios meter or by the wattmeter. On =
USB and LSB however the radio works beautifully and I use it nearly =
everyday to chat with the locals.
I suspected the relay at first, but since it was working on CW about 5-6 =
months ago and so was the AM and now suddenly it doesn't leads me to =
believe that something went dead in the radio. Is the AM and CW closely =
related in this radio that they would both be affected if one component =
gave up? On AM when you push the PTT on the mic you can hear the relay =
click, but you can also hear a loud pop from the speaker when doing so. =
On CW you hear the relay click on and hear the sidetone while sending =
then of course you hear the relay click off.
I can't find any mention of Yaesu ever publishing a service/maintenance =
manual for this radio, seems odd to me since the 101B I used to have had =
one, and the FT-221 that I recently resurrected from the dead had one =
that was easy to obtain.
So, does anyone have any suggestions? Is there any other FT-620B owners =
out there or someone who knows what's wrong? Is there indeed a service =
manual for this radio, that would be of significant help also. You can =
email me at:
And check out my Web Page! www.qsl.net/kb0nly
Thanks in Advance and 73,
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