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FRS Ch 5 data bursts? - West OKC / Bethany area

n5usr

Member
Premium Subscriber
Joined
Aug 10, 2007
Messages
595
Location
Bethany, OK
I've recently been scanning the FRS channels again and noticed in my area (Bethany, West OKC) there's a pretty strong signal that's transmitting data bursts (I guess!) on channel 5 (462.6625) continuously. It's three sets of two very quick bursts each set separated by 1.5-2 seconds, then a pause of about 5 seconds, and repeat.

At first I thought it was just a kid kerchunking away, doing double-taps with one of those tail beeps turned on - but if so his finger must be falling off after weeks of continuous activity! :ROFLMAO:

While typing this I have been listening to it on a Icom ham radio and watching the S-meter I notice another interesting characteristic, the first two sets in each cycle are around S-3/S-4 and the third burst is full scale. Maybe I'm hearing multiple units communicating with each other?

Any thoughts what it might be?

I've been thinking about ways I might be able to decode it, could be a diverting time sink... :unsure:
 

mmckenna

Well Known Member
Joined
Jul 27, 2005
Messages
10,447
Location
SNCZCA01DS0
Locally we had a large corporate farm running John Deer RTK radios on FRS channel 3. The radios send out GPS data to the tractors. Someone decided that FRS was a free for all and figured it was OK. Didn't end well for them, one of our members contacted the FCC and they found them.
https://docs.fcc.gov/public/attachments/DOC-357057A1.pdf

Might be a local farm in your area doing the same thing if it's continuously happening. If it's sporadic, then maybe the Rino's.
 

HogDriver

Member
Premium Subscriber
Joined
Feb 3, 2007
Messages
853
Location
Oklahoma City
Does this apply to National Business Itenerant freqs, as well? I have one in my area doing almost continuous data bursts.


Sent from my iPhone using Tapatalk Pro
 

nd5y

Member
Joined
Dec 19, 2002
Messages
7,882
Location
Wichita Falls, TX
GPS RTK units used in farming and construction are commonly licensed for:
461.025
461.050
461.075
461.100
461.125
461.150
462.125
462.375
462.400
464.500
464.550
464.600
464.625
464.650
464.700
464.725
464.750
but they could be on other frequencies too. They continuously send a 1/2 second long data burst once a second.

I don't know what Rinos sound like or how often they send data.
FRS/GMRS rules have limits on how long and how often data can be transmitted. I don't think Part 90 does.
 
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