940.22 MHz - What is it????

[justinbucherj]

I came across this signal at 940.22 MHz and it caught my attention because it was so strong. And it had this same strong signal strength around an area the size of a small town. Driving in approximately an 8.5 mile circle there is almost no change in signal strength. As soon as I go outside that circle it drops off. I chased this signal for about 3-4 weeks and then it suddenly disappeared. That was about 2 years ago and I have been monitoring to see if it comes back and nothing. I've tried googling to the end of the earth coming up with nothing. Anyone have any idea what this could be? Thanks for any help!

I have several video's of the signal also but I cant figure out how to attach them.

 

[nd5y]

That frequency range would be Narrowband PCS (CN). It's probably not federal.

Narrowband Personal Communications Service (PCS)

The Narrowband Personal Communications Service (PCS) is in the 901 – 902, 930 – 931, and 940 – 941 MHz spectrum range. The most common use of Narrowband PCS spectrum is two-way paging and telemetry. Telemetry includes services such as monitoring utility meters from an off-site location...

www.fcc.gov

 

[kv5e]

ReFLEX is the protocol, you should see several more carriers in the DC area.

 

[SkyPager]

You are hearing what was once SkyTel's two-way paging network. Not sure who owns them now.
Four 10 kHz carriers centered on 940.220 MHz downlink; 1 carrier at 901.20625 uplink.

 

[justinbucherj]

Here is a link to a video of the signal. I think the pattern of these pulses is definitely key to identifying what it is.
https://youtu.be/5HeKzgeFwAs

 

[u2brent]

FCC Search Results for 940.20 to 940.29

No Results in DC
MD Search Results

Call Sign/Lease ID​	Name​	FRN​	Radio Service​	Status​	Expiration Date​
1	L000013904	Southern Maryland Electric Cooperative Inc.	0002163400	CN	Active	09/29/2024
2	L000031849	Town of Elkton	0027090091	CN	Active	09/29/2024

VA Search Results

Call Sign/Lease ID​	Name​	FRN​	Radio Service​	Status​	Expiration Date​
1	KNKV204	Sensus Spectrum LLC	0015015019	CN	Active	09/29/2024
2	WQQW517	Sensus Spectrum LLC	0015015019	CN	Active	09/29/2024
3	WQVG782	Sensus Spectrum LLC	0015015019	CN	Active	09/29/2024
4	WQWH391	Sensus Spectrum LLC	0015015019	CN	Active	09/29/2024
5	WQWR702	Sensus Spectrum LLC	0015015019	CN	Active	09/29/2024
6	WQXT200	Sensus Spectrum LLC	0015015019	CN	Active	09/29/2022
7	WQYK264	Sensus Spectrum LLC	0015015019	CN	Active	09/29/2024
8	WQZE436	Sensus Spectrum LLC	0015015019	CN	Active	09/29/2024
9	WQZE443	Sensus Spectrum LLC	0015015019	CN	Active	09/29/2024
10	L000024311	Sensus Spectrum LLC	0015015019	CN	Active	03/19/2023

 

[kv5e]

OK, Sensus forward channel for their AMR telemetry system for meter reading. ReFLEX will have be in 1.875 second frames.

 

[justinbucherj]

OK, Sensus forward channel for their AMR telemetry system for meter reading. ReFLEX will have be in 1.875 second frames.

But it wouldn't explain why I saw it every day for a month and now its disappeared. I look for this signal everywhere and I have never seen it again. I travel a lot too.

 

[kv5e]

Unless they are testing and have not commissioned the system yet. There could be several reasons why. That was the Skytel ReFLEX 50/25 band and Sensus now has spectrum in CN from 940.0000 to 940.2500 MHz