Is that Upper or Lower Sideband?


VegasNightOwl





"dxAce" wrote in message
...
A US NBC Network news reporter & cameraman just flew aboard a RNZAF P-3K

maritime patrol aircraft operated by 5 Squadron, active in the search
for
MAH777 & the footage aired on Saturday evening 22 March.

One scene showed a console in the mission section of the aircraft and
the
mission freqs were clearly visible:

123.450 --VHF
123.100 -- COMM1G
156.800 -- COMM2G
281.200 -- COMM3
15962.0 -- HF1 SC
22868.0 -- HF2
[blank] -- DF

Time on the display was 0617Z & I assume that was 22 March.


Tim
St George Utah
(via UDXF)

Comms heard here on 15962 at 0710z 23 March.

dxAce
Michigan
USA

VegasNightOwl wrote:
Is that Upper or Lower Sideband?

Almost every communication in the world that is SSB uses upper sideband.

The notable exceptions are hams which use both (the practice is LSB
below 9mHz, USB above), BUT only 5mHz (which is USB) is regulated by law,
and over 50mHz both are routinely used.

The other exception is analog broadcast TV video. Analog TV audio is (was?)
FM except for France which used AM.

Geoff.

--
Geoffrey S. Mendelson, N3OWJ/4X1GM/KBUH7245/KBUW5379

Thanks for the info!


VegasNightOwl




"Geoffrey S. Mendelson" wrote in message
...
VegasNightOwl wrote:
Is that Upper or Lower Sideband?

Almost every communication in the world that is SSB uses upper sideband.

The notable exceptions are hams which use both (the practice is LSB
below 9mHz, USB above), BUT only 5mHz (which is USB) is regulated by law,
and over 50mHz both are routinely used.

The other exception is analog broadcast TV video. Analog TV audio is
(was?)
FM except for France which used AM.

Geoff.

--
Geoffrey S. Mendelson, N3OWJ/4X1GM/KBUH7245/KBUW5379