Curious Question.. I've seen several counties in my area where they use multiple analog public safety repeaters which all transmit on the same frequency with the same privacy code. Each repeater uses the same input frequency but it's my understanding that each one is listening for two privacy tones, one that is used by the county dispatch to access all of the repeaters at once, and then each repeater has a different input tone for the users who select which ever repeater is closest to them with the output being on the same output frequency/tone as the other repeaters in the county. My question is, how is this accomplished without any of the two repeater outputs not interfering with each other?
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Multiple repeaters transmitting on one Frequency
- Thread starter jeffd2
- Start date
Yeah, that might be the case.. I did some more reading last night at I believe you may be correct... sounds like they use a GPS Clock that some how syncs 2 of the 3 repeaters with the main repeater.. Sounds a bit above my current understanding... I appreciate your input..
Lots of details here in the Case Studies & App Notes section: Simulcast Solutions
Yup. Simulcast with failsfot local repeat. My SAR stuff is setup this way.
