39.300/40.450 Analog Inversion Scrambling

[kkn50]

2007-07-14
QTH: DM88ng, Kiowa County, CO 38.28710N 102.90158W

Analog inversion scrambling on 39.300 and 40.450. Unknown if related.

Local afternoon with very strong signals during band opening.

 

[illini52]

40.45 is (should be) US Military.

 

[KF4ZTO]

39.300 could also be, while it is technically a public safety pool freq, US military land communications occupy the entire 30-76 MHz band in 50/25 kHz steps. Although most of their stuff is frequency-hopping SINCGARS nowadays (or at least I thought it was?)

Also, was the band open to Canada? I know many Canadian fishery communications use voice inversion.

 

[kkn50]

South Texas EL09

40.450/103.5 - Analog inversion voice scrambling. I last heard while mobile in Colorado in July 2007. The six meter ham band is currently open from my QTH to Florida, the Caribe and northeast South America. No opening to the north (Canadian fishermen). Not likely US Military.

39.300/114.8 - Short transmission - not police.

Perhaps these freqs are used by US fishermen off the Florida coast?

 

[kkn50]

South Texas EL09
2009/07/27 at 1500z

Receiving analog inversion scrambling on 40.450/103.5 with strong signals.

The six meter ham band is open from my location to the Caribe. Ten meters is not open.

Audio clip: http://sites.google.com/site/okiesam/Home/vhf-low-band-1/40-450

 

[kkn50]

Still strong at 19:30z. Band is open to the SE US and California.

 

[kkn50]

40.450 - Good signals from 09:00 - 10:00 local this morning. Six meters was open to the SE US from my location.