Strange sounds PMR channel 1 and channel 2

[ARTAKOS]

[quote="ARTAKOS"]Didn't want to open a new topic,tomorrow I was in a hilltop dxing with pmr,a couldn't scan though,the radio was stopping constantly in channel 1, it was a buzzer following a recorded female voice transmission saying# altitude 150 meters,altitude 100 meters,259 etch,..... Can enybody tell me what was that? Here is the video
http://www.youtube.com/watch?v=Q5PWQ-Hl ... ata_player[/quote

http://www.youtube.com/watch?v=Qmxwf0hV ... ata_player

Video uploaded again with sound

[timbo]

Ever seen a film called Signs ?

[mayhemicmayhem]

I get something like that on channel one, think it may be next doo's televsion causing rfi.

[digbydog]

Amateur users of High Altitude Balloons use PMR446 frequencies for telemetry from balloon payloads. It's highly likely that the sound hears is the data packets of an image being sent. Theoretically, you could connect your radio to a PC and , using the right software, decode the data packets and show the image. HAB usage is growing and is a fascinating subject - look it up online