Transcript frequency group - Telemetry Spectrum

International Consortium
for Telemetry Spectrum
The Question:
The Telemetry Spectrum Problem:
Just How Bad Is It?
Mr. Mikel R. Ryan
Mid-Atlantic Area Frequency Coordination Office
Naval Air Warfare Center Aircraft Division
Patuxent River, Maryland USA
International Telemetering Conference
San Diego CA USA, 23-26 October 2006
International Consortium
for Telemetry Spectrum
C3I: The CCC Imperative
We are Losing Bands to Spectrum Auctions
Which
Compels Spectrum Orphans to Migrate to the
Few Remaining Bands
While
Spectrum Requirements are Radically Expanding
Assuring
More Congestion & Competition & Conflict
International Telemetering Conference
San Diego CA USA, 23-26 October 2006
“Die, Spectrum Swine, Die!”
The Consequences of Electromagnetic Abuse
Mr. Mikel R. Ryan
Middle Atlantic Area Frequency Coordinator
Naval Air Warfare Center Aircraft Division
Patuxent River, Maryland
2003 USN/USMC Frequency Management Seminar
Mission Valley Marriott, San Diego CA, 12 February 2003
DIFFERENT BREEDS OF SWINE
 The Traditionalist: “We’ve Always Done This.”
 The Bequeathed: “But We’ve Been Using These Freqs
for Generations.”
 The Innocent: “I thought the ___ took care of this.”
 The Indignant: “Someone’s On My Frequency!”
 The Evolutionist: “We Have the Technology to Make
It Better.”
 The Philosopher: “I Buy, Thus I Broadcast.”
 The Selfless Warrior-God: “Radiate As We Fight.”
 The Heretic: “Screw Everybody; I’m Important.”
2003 USN/USMC Frequency Management Seminar
Mission Valley Marriott, San Diego CA, 12 February 2003
International Consortium
for Telemetry Spectrum
Mike,
EA-18G test aircraft EA1 flew at Pax on Tues 03 Oct from 1100 to 1300. TM freqs used
were 1770.5 and 1840.5. Do you know if there was anything transmitting around 1800
MHz on that day? Saw something on the spectrum analyzer and trying to make sure it's
not an issue with our transmitters.
Ward
Nothing that I know of but keep in mind the 1710-1850 MHz band is not the private
domain of EA-18G or PAX River or Flight Test Telemetry for that matter. While we
can (and probably will) schedule all ATR usage in that band (favoring high-priority EA18G) once you get to altitude you'll probably/periodically see other users up 'n down the
east coast. The spectrum is getting very congested/conflicted/contested and you will
have to share: best get used to it.
Mikel Ryan
International Telemetering Conference
San Diego CA USA, 23-26 October 2006
International Consortium
for Telemetry Spectrum
What Are These Guys Doing In ATM
Bands???
AN/VRC-99A & B: A DoD Tactical Radio System
* Operates in the 1300-1500, 1708-1836 & 1868-1980
(??!!) MHz bands.
TTNT: Target Control System
* Operates in the 1350-1520 & 1750-1850 MHz bands.
International Telemetering Conference
San Diego CA USA, 23-26 October 2006
International Consortium
for Telemetry Spectrum
Why am I not surprised this mess involves the notorious AN/VRC-99??? Heard a
separate yet similar complaint from a Boeing frequency manager just last week in
Memphis. This gear has been bouncing around the 1200-2000 MHz band the past
several years trying to find an electromagnetic home. These orphans have made
several attempts to interlope on the 1435-1525 MHz Flight Test Band; see my rather
testy comments below from when they tried to get channels in that band to support a
FLEETEX in the FACSFAC VACAPES OPAREA last year:
"Concur with request with the following conditions and comments. The 1435-1525 MHz
band is allocated for Government/non-Government Aeronautical Telemetry exclusively
(see NTIA Manual pages 4-46/47). Thus, flight test operations in the Mid-Atlantic Region
must be protected. All usage of this band of this band by all band users must be scheduled
in hourly increments with the regional Telemetry Coordinator (Mr. Larry Joy, 301-3421542). Since Flight Test operations have priority recommend AN/VRC-99A testing be
conducted at night and on weekends. Be aware this system will never be permitted to
utilize this band operationally stateside. Recommend system developers take a closer look
at the 1755-1850 MHz band."
International Telemetering Conference
San Diego CA USA, 23-26 October 2006
International Consortium
for Telemetry Spectrum
We recently had some UAV folks wanna fly at Lakehurst and PAX and they
too were astonished when they finally realized the VRC-99s (A and B
versions) they'd heavily invested in were operating (except for 1708-1836
MHz) in incompatible/near-unsupportable frequency bands. Both the VRC99 and TTNT frequency schemes are just total messes, and I'm getting real
tired of explaining to a seemingly endless parade of T&E Program Engineers
& Managers that their baby's ugly.
This TTNT business is smelling more & more like another VRC-99
fiasco. Again, be aware the 1435-1525 MHz band is for flight test
telemetering exclusively and any attempts by the TTNT folks to long-term
test & train in that band stateside will not be treated by the DoD Ranges or
AFTRCC casually or sympathetically.
International Telemetering Conference
San Diego CA USA, 23-26 October 2006
International Consortium
for Telemetry Spectrum
Mike,
Lets be careful with being too abrasive, we have customers on this email list wanting
professional help that is why they are asking important questions sooner than later.
Aaron
Sure don't mean to be abrasive, just a bit fatigued seeing/explaining/accommodating the same spectrum management problems over & over again to the full-throttle
UAV industry. I've given numerous briefs to various local, national and international
audiences on this issue trying to head off wasted $$$s (or Euros), conflicts & crashes.
Heck, every two years at the Webster Field UAV Exhibition we have to ground
(read "static display") several UAVs because they will cause interference to local
authorized users and/or are so dangerously susceptible to interference, usually
because of their heavy dependence on unlicensed/unprotected Part 15 Devices. We
also give out an informal award to the wackiest spectrum-challenged UAV. Last time
it went to a UAV whose video data and C&C links were fixed on DC/Baltimore
commercial VHF TV channels!!!
Mike Ryan
International Telemetering Conference
San Diego CA USA, 23-26 October 2006
International Consortium
for Telemetry Spectrum
The Question:
The Telemetry Spectrum Problem:
Just How Bad Is It?
The Answer:
Pretty Bad
The Qualifier:
It’s Bad All Over
International Telemetering Conference
San Diego CA USA, 23-26 October 2006