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Yaesu FT840 transmit issue.


Supporting Member
Jun 24, 2009
The receive in this unit works excellent. when I key the microphone and watch the needle on the meter the needle goes from the middle of the meter to zero. When I unkey the needle goes back to the middle of the meter where it was originally. Any thoughts?


Sr. Member
Jul 28, 2013
What mode of operation are you in as LSB & USB will show no carrier until you talk into the mic the needle should remain on zero. On am depening on the RF power setting will determine how much the needle moves. Also what frequency are you trying to tx on and is the radio capable of transmitting on that frequency? There may be more but these are some of the simple ones. Check your rf power

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