Input and Output Freq. Question...

[wv_mountaineer]

I was just doing an antenna search for my county and have found something interesting . I don't know if this is common practice or not and thought I would put it out here and maybe someone can explain it to me.
Okay here goes, I have founds different call letters for input and output freqs. listed to the same department. Meaning the input freq. is listed with one set of call letters and the output freq. is listed with another set of call letters. Is this normal? The database here at RR doesn't list both sets of call letters, why not? And if this isn't SOP then should the other input or output freq. be included in my scanning? Would these or could these two sets of freqs. have different tones to go with the call call letters I hope I have explained myself clear enough for a reply.

 

[nd5y]

A licensee can have multiple licenses for the same "system" or multiple "systems" under a single license.
By "system" I mean a group of one or more base stations, repeaters or mobiles on one or more frequencies.
How a particular user is licensed can depend on several things.
It used to be a requirement that in certain cases mobiles had to have a separate license.
Tones have abolutely nothing to do with licenses or callsigns. The licensee decides what tones are used.

The database here at RR doesn't list both sets of call letters, why not? And if this isn't SOP then should the other input or output freq. be included in my scanning? Would these or could these two sets of freqs. have different tones to go with the call call letters I hope I have explained myself clear enough for a reply.

I have no idea what you mean by that. Can you provide a link to whatever it is in the database you are talking about?

 

[GTR8000]

Let's first have links to some examples of what you found so we can look at the FCC licenses and figure out what's going on before answering your questions.

 

[ecps92]

Depending on who did the licensing, some agencies licensed the Repeaters under One Call sign [especially a Mutual Aid System or Network] and then under another license the individual City/Town Control stations were then licensed. Then to add more confussion they even licensed Mobile Only stations under another license. Your milage will vary

And No, the Tones might not be different

I was just doing an antenna search for my county and have found something interesting . I don't know if this is common practice or not and thought I would put it out here and maybe someone can explain it to me.
Okay here goes, I have founds different call letters for input and output freqs. listed to the same department. Meaning the input freq. is listed with one set of call letters and the output freq. is listed with another set of call letters. Is this normal? The database here at RR doesn't list both sets of call letters, why not? And if this isn't SOP then should the other input or output freq. be included in my scanning? Would these or could these two sets of freqs. have different tones to go with the call call letters I hope I have explained myself clear enough for a reply.

 

[loumaag]

Let me simplify the issue here. The prime focus of the RR site is to provide information to folks so they can listen to various public safety agencies. In regard to what is placed in the conventional data, by default the input to repeaters is suppressed as it is normally not what someone wants to monitor...yes-yes, I know all the reasons for doing so, note I said normally...as a result the input, even though available, is the only bit of data we provide in regard to input frequencies; everything else on a conventional data line deals with the output frequencies.

As to the original question about licenses, an agency can get a license for each individual frequency they use, or they can try and shoe-horn them all into one license. One reason to keep the mobiles (input) separate is the ability to change that license without having to justify changes that might be required on the repeater/base station license or to have to run it through coordination authorities again. Think change in the numbers or powers of mobiles, etc.