In Band Repeater
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ASWEEZY
- Posts: 29
- Joined: Fri Jan 23, 2009 2:22 pm
- What radios do you own?: HT-1250, HT-750, Maratrac, CDM
In Band Repeater
The county I am in uses Desktrac base/reapter units at all stations. These rebroadcast the departments tones after the county sends them out. Many of the rebroadcasted tones have some sort of siren tone after them that is broadcasted. How is this programed and is there any way to acomplish this with newer equipment perhaps 2 CDMs and a RICK and duplexer?
"Can you make my radio do that cool squeaky thing after im done talking? I don't need the numbers just like the noise."- Customer wanting MDC-1200 because it sounded cool.
Re: In Band Repeater
Store and forward simplex repeaters are uncommon but useful for regions with large areas and poor coverage. Maybe it's time to revisit how your county gets the job done. In these days of reasonably wide spread broadband access, there are other options available that work as well or better.
Here is an example of a simplex repeater - the Argent ADS-SR1 https://www.argentdata.com/catalog/prod ... ucts_id=98
Here is an example of a simplex repeater - the Argent ADS-SR1 https://www.argentdata.com/catalog/prod ... ucts_id=98
Re: In Band Repeater
Paging systems also use this method for in-building coverage for pager use in large warehouses and factories.
I set up a few of these 'machines' several years ago to increase coverage of the buisness ownded paging system.
Actually not bad to get up and running, and these had nothing to program either-pretty much a plug and play thing.
All you needed was two antennas with a minimum separation of 75 feet, or as we stated it; one big steel door of separation.
Power out was about 2 watts, and just adding a gain antenna for RX, we had excellent in building coverage with the TX off
a 3dB mobile antenna.
We could have placed both antennas inside, but when in a large building with windows, why not use them?
drill a hole and run the 1/2" Heliax to the RX antenna, and all is golden.
No pages were 'lost' or not rfeceived, in fact, we had reports that in the worst areas of the warehouse, workers got pages
where nothing ever got through prior to the install.
The TX antenna was centered in the warehouse as best we could and bolted to a support beam off the side and below it about a foot or two.
The bad part of the whole thing was the industrial dust we ate while there.
I doubbt they wax the floors or dust the 'furniture' too often there.(chuckle)
I set up a few of these 'machines' several years ago to increase coverage of the buisness ownded paging system.
Actually not bad to get up and running, and these had nothing to program either-pretty much a plug and play thing.
All you needed was two antennas with a minimum separation of 75 feet, or as we stated it; one big steel door of separation.
Power out was about 2 watts, and just adding a gain antenna for RX, we had excellent in building coverage with the TX off
a 3dB mobile antenna.
We could have placed both antennas inside, but when in a large building with windows, why not use them?
drill a hole and run the 1/2" Heliax to the RX antenna, and all is golden.
No pages were 'lost' or not rfeceived, in fact, we had reports that in the worst areas of the warehouse, workers got pages
where nothing ever got through prior to the install.
The TX antenna was centered in the warehouse as best we could and bolted to a support beam off the side and below it about a foot or two.
The bad part of the whole thing was the industrial dust we ate while there.
I doubbt they wax the floors or dust the 'furniture' too often there.(chuckle)