I caught what sounded like a law enforcement unit running plates on 165.600 PL 110.9. We have this frequency identified with other tone in the DB as Bureau of Land Management (BLM). We do not have the 110.9 PL ID’d.
U.S. Government Scanner Frequencies and Radio Frequency Reference
Anyone know the location of 165.600 110.9 PL? Just a guess, but from the signal strength it is about the same as I get from other VHF transmitters on Mt. Ord.
The information I have does not show 110.9 used for any repeater on the BLM's Phoenix District. The Colorado River District uses 110.9 for their Christmas Tree Pass repeater located north of Laughlin, NV. That repeater has an output frequency of 169.775 and obviously you would not hear it even if 165.600 was used for it.
The database shows 165.600 as the law enforcement frequency for the Phoenix District, but the offiicial directory shows 172.525 as the "Fire/LE" frequency for the district. These directories are published primarily for fire purposes so it doesn't surprise me that it differs from what people are hearing in the Phoenix area. The directory does not show a repeater on Mt. Ord.
I'm also assuming, per the database, that each repeater transmits the repeater access or input tone on the output frequency.
Is this the case? I ask because a lot of systems have one common output tone. That is a repeater may have an input tone of 131.8, but every repeater on the system may have a 110.9 output tone. This makes repeaters very difficult to identify.
Could this be the case for the LE system on the Phoenix District? The repeater listing in the directory shows no output tones being used for all the BLM repeaters in the state, but again, that might be for the fire net repeaters only.
The directory is of no help answering your question. It is the best I have right now. I will be in Scottsdale Sunday through Saturday this coming week so I will listen to all the frequencies in the directory and the database. I probably won't hear much as most federal employees try to burn their annual leave around Christmas and I don't hear much on any natural resource/land management frequency during my Christmas visits there.
