Mooneymite Posted December 29, 2022 Report Posted December 29, 2022 Years ago, I found that 120.9 was garbled on both my comm radios. When I complained to a tron-tech, he opened the fuselage access and completely removed my ELT. That cleared up the frequency. It didn't make sense to me since the ELT wasn't transmitting. The tron said it was a frequency harmonic caused by the proximity of the ELT antenna to the comm antennae (or something like that). He installed a "gizmo" (choke?) on the ELT's antenna connector and the problem never recurred. Personally, I think it was fixed by a secret Wiccan incantation. That makes more sense than an "antennae harmonic". I only offer this story in case you know that Wiccan incantation. 1 Quote
A64Pilot Posted December 29, 2022 Report Posted December 29, 2022 On 7/16/2020 at 7:10 AM, takair said: Do you have portable GPS or USB charger? Start with those. Many of the USB chargers are known to cause intermittent noise. Many LEDs do too, it’s their power supply Quote
A64Pilot Posted December 29, 2022 Report Posted December 29, 2022 RF chokes can help, wrap usually the power supply wire around the choke a couple of times and snap it shut, cheap and easily removable, but you have to have a few inches extra wire. https://www.amazon.com/rf-choke/s?k=rf+choke Quote
Cory_40 Posted October 7, 2024 Report Posted October 7, 2024 On 8/7/2020 at 11:27 PM, LucasC said: Got the radio back from mikes avionics out of AZ. He couldn't pin point a problem necessarily but he realigned the radio to specs and all is well now. I recommend for older king and narco problems. Clear as a bell now. How much did that cost to have it realigned? I have the same probable. Mine is a range of frequencies between 121.9 and 123.1 and again at 132.0 to 133.0. Clear elsewhere. Just constant static unless transmitting or receiving. Quote
MikeOH Posted October 7, 2024 Report Posted October 7, 2024 31 minutes ago, Cory_40 said: How much did that cost to have it realigned? I have the same probable. Mine is a range of frequencies between 121.9 and 123.1 and again at 132.0 to 133.0. Clear elsewhere. Just constant static unless transmitting or receiving. @Cory_40 Just want to point out this thread is 4 years old, and @LucasC hasn't visited since July 2021. You might try contacting https://www.kx-155.com/ 1 Quote
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