Page 1 of 1
RSO helo on UHF
Posted: Thu Feb 04, 2016 4:52 pm
by sp1989
Just heard RSO's helo announce its' presence on 369.0 mhz, much like military aircraft fo on 255.10 mhz. Pilot ID'ed as "Sheriff's helicopter" with position. I could see it in my neighborhood at the same time.
Re: RSO helo on UHF
Posted: Thu Feb 04, 2016 7:06 pm
by brandon
369.000 is the third harmonic of 123.000 MHz (Hemet Ryan CTAF freq) so most likely the air unit was pretty close to you when he keyed up
Re: RSO helo on UHF
Posted: Fri Feb 05, 2016 2:31 pm
by sp1989
Yes, he was almost directly overhead. Thanks for clearing that up! Haven't really thought about harmonics since the days you could use the image to listen to cellphones =)