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Author Topic: UHF mil air  (Read 67859 times)

Offline mike445

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Re: UHF mil air
« Reply #495 on: January 16, 2020, 0501 UTC »
TACAMO flight burning mux on 338.950MHz 2030Z 14JAN19

SENTRY 06 (E-3B 964th AACS/ 552nd ACW Tinker AFB, OK) setting up air to air refuel with GETTY(?) 21 (GETTY DC CAP tanker) on 343.25 2145Z

06 tells 21 we're completing our first orbit, do you need more time?

I hear the TACAMO flights often here in SW Arkansas on 338.950 and 383.550. Iíve also caught some strange data bursts on 351.000. Pretty interesting stuff.
Mike

Offline Josh

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Re: UHF mil air
« Reply #496 on: January 16, 2020, 1929 UTC »
Hi Mike, nice to have another ear aboard. Didn't have 351 in the rx, will see if anything pops up.
Conveniently located near Vincennes Indiana.

Offline mike445

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Re: UHF mil air
« Reply #497 on: January 16, 2020, 2007 UTC »
Hi Mike, nice to have another ear aboard. Didn't have 351 in the rx, will see if anything pops up.
351.000 was different. Very strange. At first I thought it was interference so I tested it on three other scanners and SDR and all different antennas for each. I could post a short video of it here if I was able to.

I hear TACAMO right now on 301.650 AM. Why are the data streams in NFM some days and AM others?
Mike C.

Offline mike445

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Re: UHF mil air
« Reply #498 on: January 17, 2020, 0248 UTC »
Hi Mike, nice to have another ear aboard. Didn't have 351 in the rx, will see if anything pops up.

Good to be part of the forum.  I posted a clip to my FLIKR.  Here is the link for 351.000:
https://flic.kr/p/2ig4N8x

Quite a bit different than TACAMO.  The same data stream (I'm assuming) popped up on 351.350 and 234.950 as well.  It would alternate between those 3 frequencies.

Here is a link for 351.350:
https://flic.kr/p/2ig1BNg

There was a B52 from Barksdale nearby (heard him on 311.000) and an E3 Sentry.
Mike

Offline Josh

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Re: UHF mil air
« Reply #499 on: January 17, 2020, 2013 UTC »
I'd have to have a i/q of the entire sig to run it thru the batputer. Top o' me head says this was from the Sentry, with the BUFF you mention a close second.

As to the tacamo wideband mux, it's always wideband fm, 60kc wide I think, with various amplitude modulated sigs superimposed on the channelised mux stream. There will be two mux flowing, uplink and downlink, I'm not in range of any uplink that I know of, haven't heard any. There has been mention of a digital version to replace the analog wideband fm link but have yet to see it here. Somewhere around the start of this thread are some video links to steps taken by a monitor to extract specific channels from the mux, so you might take a look at them if you haven't.
Conveniently located near Vincennes Indiana.