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Using another radio as a monitor...BUT...

45 North Florida

Active Member
Jun 14, 2024
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So this is probably simpler than I think, but it has always had me stumped. My Yaesu FTDX-10 is the transmitter in this situation, hooked to a dummy load...my Icom 7300 is the receiver/monitor, as I'm setting the eq in the Yaesu. Even with the Yaesu turned all the way down to 5 watts, and only an s8-s9 signal on the 7300, the audio sounds horribly distorted. I can take my 7300 out into my field 100 yards away on my side by side and have my wife give me some audio, or have her play a recorded test message, and it's as clean as a whistle, just by getting out of the house with the 7300. Is it RF from the dummy load possibly? Even transmitting on my vertical 60' up the tower sounds bad with the 7300 right beside me, or even in another room of the house. Am I still over loading the front end of the 7300 even though it only has an s8 signal from the Yaesu?
 

Had a similar issue with Xmit on FT-710, RX on IC-718 til I backed the RF Gain way back on the 718 (which is for sale BTW).
 
Does the receiving radio have anything connected to the antenna jack? If not, connect a dummy load. It doesn't have to be a high power resistor, even a quarter watt resistor should work.

I often have this problem when monitoring on a second CB. If I had to guess, I think the pre-select LC filter rings too hard when there is no load connected to the radio. Again, that's just my guess.
 
Does the receiving radio have anything connected to the antenna jack? If not, connect a dummy load. It doesn't have to be a high power resistor, even a quarter watt resistor should work.

I often have this problem when monitoring on a second CB. If I had to guess, I think the pre-select LC filter rings too hard when there is no load connected to the radio. Again, that's just my guess.
That sounds like a very good possibility...I'll try that tonight.
 

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