Friday, March 14, 2014

Low Band ducting!

The Uniden 785 was sitting on top of the fridge as usual. The RG-8 feed from the roof mounted antenna was capturing various activity around Denver. There were helicopters and at least two F-16s out of Buckley in the air.

The scanner was running through my programmed frequencies. It stopped on a very distinctive and new signal. An analog voice channel in English discussing (firing) locations on a range. Reference was made to various activities. It was just about 8.15 mountain time. I stopped the scan on 32.300 in FM. The voices were clear and consisted of a control station and a number of out stations. These seemed to be somewhat mobile. The signals were very strong and clear. One peculiarity was a short data tone every 5 seconds or so. A Havequick sync tone? Then something surprising. The voices changed to French and an exercise continued with various coordinates being passed in French. An F2 ducting event? The English voices had a distinct Canadian accent at times. 

The conversation continued. The Uniden was put into the car to allow various chores to be performed. The dedicated 40 MHz NMO mount antenna was put into service and the signals were almost as strong as the multi-band on the roof. Between transmission blocks I began searching. On 32.550 a signal that sounded like a PD dispatch. A NY or NJ accent was noted. The range activities continued until after 1830 local.

Later in the afternoon, a helicopter was found approaching Buckley from the South on 41.750 FM. This is a new frequency for me as I mostly hear their traffic on 32.300 FM, 32.500 for Buckley 'Outlaw', 32.600 and 32.750, all FM. That day the Command Post was active on 122.850 AM and the F-16's were in the Sandbox on 138.950 in FM.  Tower was monitored on 121.000 AM. I tend to listen to VHF as it makes the AirLife and Flight For Life helicopters movements monitorable as they pass in and out of Buckley's airspace on their way in and out of the group of hospitals on the East side of the City.

Well, hopefully this has been of use. More to follow as it is found. Keep searching!