Police in the 440MHz

jaymatt1978 · Dec 28, 2014

Before replying PLEASE LOOK AT THE LINK. Why does FT Lee police have a license to transmitr in the entire 440MHz ham radio band? Is t here a FCC rules change I wasn't aware of?

Weekly New Jersey FCC Grants

dun34 · Dec 28, 2014

It's for a robot.

From the special conditions on the license: Licensee must operate in accordance with DA 10-291, released on February 23, 2010. Licensees must maintain a log of all Recon Scout use. The log will include the date of operation, start/stop times, location of operation, frequency segment of operation, reason for use, and point of contact. Licensees must provide this information to the Commission or to the National Telecommunications and Information Administration upon request of either agency.

ARRL explanation: FCC Allows Robotic Device in Amateur Band

trumpetman · Dec 28, 2014

That is for 100 kHz wide NTSC video for a ReconRobotics surveillance robot. Notice the .323W max output/ERP, Looks like a very local video feed link provided from the robot.

I imagine it's frequency selectable to prevent interference or allow for multiple feeds from different robots without interfering with each other. Search the emission designator 100KC3F for more information. It's a very unique emission that only seems to be used for this single purpose.

mmckenna · Dec 28, 2014

Also, keep in mind that Amateur radio is secondary on most the 70cm band.

jaymatt1978 · Dec 28, 2014

True but public safety literally takes up 90 % of the spectrum between 29-900 Mhz, they literally waste it. If they used the spectrum more efficently, they wouldn't need to take over the 70cm band

robbinsj2 · Dec 28, 2014

jaymatt1978 said:
True but public safety literally takes up 90 % of the spectrum between 29-900 Mhz, they literally waste it. If they used the spectrum more efficently, they wouldn't need to take over the 70cm band

Not literally, unless you really think that public safety takes up 783.9MHz of bandwidth. They don't take up even close to 90% of the non-federal LMR spectrum, assuming that's what you mean. Take the basic UHF band of 450-470 -- PS gets 4MHz or 20% of it, and that's a setting aside the adjacent amateur and commingled UHF-T bands.

You're in or near Bergen County, a stone's throw from NYC and thus in one of the most RF-congested environments in the world. If you look out to rural Montana then your frustration would have stronger basis. In the meantime, think of it as a challenge to catch Fort Lee's use of and potential interference to/from that transmitter(s).

Jim

Jimru · Dec 28, 2014

To the OP, consider yourself lucky!

Here on Cape Cod, MA, we can't use 70cm repeaters at all, because of the USAF radar installation (known as PAVE/PAWS) at Joint Base Cape Cod (formerly Otis AF Base/US Army Camp Edwards).

We can use low power simplex for events, however.

Jim

Voyager · Dec 29, 2014

jaymatt1978 said:
Before replying PLEASE LOOK AT THE LINK. Why does FT Lee police have a license to transmitr in the entire 440MHz ham radio band? Is t here a FCC rules change I wasn't aware of?

Weekly New Jersey FCC Grants

Hams have always been secondary to the Federal Government in that band. No change in FCC rules apply. Some parts of the federal band actually have FCC licenses as a formality.

n2nov · Dec 30, 2014

Voyager said:
Hams have always been secondary to the Federal Government in that band. No change in FCC rules apply. Some parts of the federal band actually have FCC licenses as a formality.

Yes, secondary to the FEDERAL government, not to a local PD like Ft. Lee, NJ.

Voyager · Dec 30, 2014

n2nov said:
Yes, secondary to the FEDERAL government, not to a local PD like Ft. Lee, NJ.

Fort Lee. Sure sounds like a military installation, but if not, OK.

Keith_W7KEW · Dec 30, 2014

jaymatt1978 said:
Before replying PLEASE LOOK AT THE LINK. Why does FT Lee police have a license to transmitr in the entire 440MHz ham radio band? Is t here a FCC rules change I wasn't aware of?

Weekly New Jersey FCC Grants

Amateur radio only has a secondary use of the 420-450 MHz band. Repeaters have been pulled off the air for use of that frequency by the government. The 440 band could disappear from ham use tomorrow and we would have no recourse.

jaymatt1978 · Dec 30, 2014

Voyager said:
Fort Lee. Sure sounds like a military installation, but if not, OK.

Town in Begen County

w2xq · Dec 30, 2014

Make that Bergen County. Fort Lee is on the western end of the George Washington Bridge connecting NJ and NY otherwise separated by the Hudson River. Just follow I-95. Atop the Palisades, it was named for the site of an early American Revolutionary War military encampment.

Police in the 440MHz

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