Anyone have any clue what TRS these Freq's are part of?

[rmiles]

Just picked them up with the Signal Stalker on my Pro-83. 898.237 and 898.225. Both were very clear analog input freq's to what I thought were BGE's TRS. The output freq's equate to 853.237 and 853.225 but those freq's are not part of the BGE System. When I searched the MD database, it returned nothing. Any ideas?

 

[N9JIG]

These are inputs to a 900 MHz. system, add 39.00 MHz. to the freqs and you will find the corresponding outputs.

Might these be Arinc?

 

[N9JIG]

As a follow-up, Systems in the 851 thru 869 MHz. range use mobile inputs 45 MHz below the output, systems in the 900 MHz band use inputs 39 MHz below the output.

 

[ericcarlson]

Just picked them up with the Signal Stalker on my Pro-83. 898.237 and 898.225. Both were very clear analog input freq's to what I thought were BGE's TRS. The output freq's equate to 853.237 and 853.225 but those freq's are not part of the BGE System. When I searched the MD database, it returned nothing. Any ideas?

800 MHz repeater inputs are -45 MHz offset from the output. Those are probably 900 MHz repeater inputs (-39 MHz offset from output). Are you hearing WNPW672?

-Eric

 

[rmiles]

Sorry, in may haste to figure out what I was hearing, it never even occured to me that I was picking up a 900MHz system. I actually did know what the repeater offset is for 800 but fogot what the oftset was for 900. Thanks for the refreash! I don't remember seeing any references to the comcast TRS in the RR Database. Is it in there? I'd like to plug it into my scanner to see how active it is. I never knew comcast had a radio system. I thought they communicated via Nextel.

 

[ericcarlson]

I never knew comcast had a radio system. I thought they communicated via Nextel.

The frequency that you mentioned is licensed as conventional. Is there any evidence of it being trunked? It is not in the RR Database.

-Eric

 

[rmiles]

Yes, I know it's not in there. Which is why I was surprised to hear that they had a license. Let me do a search and see what I can find. What I heard was a repeater input. I suppose they could have a conventional repeater but I doubt it. More to follow! How did you get the info on WNPW672? I'd like to see if the other freq is in there. That is why I think it's part of a TRS. I heard the input side of the conversation and it hopped back and forth several times between 898.237 and 898.225.

Ron

 

[ericcarlson]

I just looked up the freqs using the FCC data search (in Maryland). That other frequency is (licensed) as a part of a trunked system: WNQL622.

-Eric