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Re: [RFI] FM Wireless Mic on 144.160MHz

To: Don <kb5kwv@gmail.com>
Subject: Re: [RFI] FM Wireless Mic on 144.160MHz
From: Alex <alex@kr1st.com>
Reply-to: alex@kr1st.com
Date: Sat, 29 Aug 2020 12:14:18 -0400
List-post: <mailto:rfi@contesting.com>
That would explain why my signals never bothered them. I'll check 72.08 as soon a it comes back on. Thanks for the suggestion!

73,
--Alex KR1ST

On 2020-08-28 22:25, Don wrote:
Check 72.08 to see if it is the second harmonic of a 72Mhz mic or
auditory hearing device. I had one they put in the top of the church,
and it could be heard for a long ways around on the harmonic.

A quick talk to the pastor, and I helped him change the frequency to
something where the second harmonic would not bother.


On 8/28/2020 7:43 PM, Alex wrote:
Hi there,

A local church has a FM microphone that is transmitting on 144.160MHz, and I can also hear it 20kHz above and below that frequency. I'm not sure if 144.160MHz is the principal signal or if it's some mixing product. Would anyone know what brand/model wireless microphone would cause this?

It wasn't much of a problem when they only used it on Sunday mornings, but they have a ton of activities now and they use that microphone a lot more. Tonight is movie night and the mic is on...

73,
--Alex KR1ST
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