- kgbaxter
- Posts : 1
Join date : 2024-07-12
Wyoming WyoLink P25 question
Sat Jul 13, 2024 2:04 pm
Our statewide phase 1 P25 system is on VHF.
We've got a site in town with 5 channels, plus the control channel. We are about 3 miles from the site and we're on a hill overlooking the city, so signals are good.
A friend loaded me his P25rx receiver to try, and it's loaded with our local site frequencies and it picks up the TGs well, but when the trunking controller passes a conversation off to ONE of the VHF channels, the P25rx doesn't hear it.
The frequencies of our system are: 151.4825c 151.4975c 153.800 154.235 154.340 155.2125
Any time a conversation is tossed over to 154.34, I can't hear it.
I've looked at the signal strength of the transmitters on this system on my Icom R-7100 receiver, and the signal levels are all with 5db of each other. However, on the P25rx, the control channel is showing a -59dbm signal, but on the rare occasion it hears 154.34, the signal is less than -80dbm.
No problem hearing trunked traffic on any of the other channels.
Any idea why one frequency would seem rather deaf?
We've got a site in town with 5 channels, plus the control channel. We are about 3 miles from the site and we're on a hill overlooking the city, so signals are good.
A friend loaded me his P25rx receiver to try, and it's loaded with our local site frequencies and it picks up the TGs well, but when the trunking controller passes a conversation off to ONE of the VHF channels, the P25rx doesn't hear it.
The frequencies of our system are: 151.4825c 151.4975c 153.800 154.235 154.340 155.2125
Any time a conversation is tossed over to 154.34, I can't hear it.
I've looked at the signal strength of the transmitters on this system on my Icom R-7100 receiver, and the signal levels are all with 5db of each other. However, on the P25rx, the control channel is showing a -59dbm signal, but on the rare occasion it hears 154.34, the signal is less than -80dbm.
No problem hearing trunked traffic on any of the other channels.
Any idea why one frequency would seem rather deaf?
drsm0ke likes this post
- drsm0ke
- Posts : 3
Join date : 2023-04-04
Location : Kansas City Metro Area
Re: Wyoming WyoLink P25 question
Tue Jul 16, 2024 1:47 pm
Hey Todd,
Is there a possibility that the frontend circuitry is filtering out this one frequency?
Like some kind of DSP that you can tune?
I Loaned this unit to Kirk to try out.
Thanks
Bob
Is there a possibility that the frontend circuitry is filtering out this one frequency?
Like some kind of DSP that you can tune?
I Loaned this unit to Kirk to try out.
Thanks
Bob
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