Repeater systems

[menace3397]

Hello everyone, I am usually a lurker but would like a questioned answer, or suggestion.

I follow about 8 different frequencies. They are all repeaters (output). These 8 frequencies are outputs, they all say the same thing depending on where you're located. I guess you can say its a linked repeater system (?). The repeaters are about 40-50 miles apart from each other. There is 4 repeaters total. The frequencies range between 140 and 173 (yes i know, its a big range). Still can't find an input for it. Any suggestions???

 

[SAR923]

Where are you at, and what radio system are you monitoring? It's impossible to answer your question without knowing this.

 

[menace3397]

Hello Jim, thanks for the quick reply. I an currently in buffalo for some work. I took my scanner with me to see what I can pick up. The handful of frequencies are along the border in Canada (Toronto) area. If I'm at one location farther north I might pick up 2 of the frequencies. If I'm closer to buffalo I might sometimes pick up 2-3 of the frequencies. If I go a bit south I'll pick up 1-2 frequencies. Like I said, they are all the same so I'm convinced they are al outputs. It's just a trucking/transportation company. How do I find an input?? Could it be simplex mode?? I just realized a typo on my original post. I'm going to guess the repeaters are about 10-15 miles apart, maybe more. I borrowed a friends personal DF equipment to determine that. I have picked some of these frequencies in Erie, PA, Cleveland, OH and on a good day in Detroit, MI. Any ideas?

 

[davidgcet]

since this is VHF the freqs are not paired so you can't just guess them. but what you can do is lookup the known freqs on the FCC's ULS database and the licenses will tell you the other freqs.

 

[chrismol1]

Maybe its some kind of voting system and their using low power units on the input

 

[zz0468]

The easiest way to determine this is to identify who the licensee is, then do a look-up of FCC records (assuming the system is on the U.S. side) to determine all the frequency that licensee has. That would give you a starting point to find the inputs.

Otherwise, you haven't given us enough information to be helpful.

 

[SkipSanders]

If it includes 140 MHz channels, it's Canadian, not USA.

With a system using that many wide-apart outputs, I wouldn't be suprised if in fact, it is a set of entirely seperate repeaters, each with their own input, which are LINKED by a master center somewhere and all retransmit any input, or, selectively, some inputs.

The local Homeland Security channels in San Diego are like this, supposedly. You may find 4 channels on different mountains, all repeating the same 'input', but they're all seperate repeaters, with the linkage being by control center patching, not same input.