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Front end greatly attenuated

Sep 25th 2022, 17:54

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
I have an Ft-991A and recently had solar put on my roof (near my vertical). I got a lot of noise that wipes out anything with a 5/9+ signal. My radio front end will also frequently attenuate the signal immediately after transmitting, rendering the radio unusable so that I have to turn it off and return later. I moved my antenna from the roof to the back fence which helped some. I thought there might be two separate issues (radio damage & inverter noise) but I hooked up my old alinco dx-70 and the same thing happened. Any thoughts?
Sep 26th 2022, 09:04


Super Moderator

Joined: Apr 4th 1998, 00:00
Total Topics: 0
Total Posts: 0
Interference from solar systems is usually something that goes away at night. Do you still have the problem at night? You may be able to turn off the inverters to do a test during the day.

There are many devices that can cause RFI. It is possible for the inverters to be clean but the power supply powering a WiFi data collection system associated with the supply to cause RFI.

Zak W1VT
ARRL Senior Lab Engineer

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