Cleveland RAYNET Group
Not all stations in a network may be in direct contact with each other. If not, we will relay a message through an existing station. If the planning of the event indicates that most of the stations probably won't be able to speak to each other, we'll provide a separate relay station at a good radio location.
A manual relay consists of the message being sent from A to B to C. If relay B has talk-through facility, the message is sent on one frequency from A to B. Relay B automatically retransmits the message on another frequency. Station C listens on that other frequency.
An Amateur Radio repeater is at a designated fixed location and much paperwork and planning is required before a licence is issued. The process could take weeks or months. Any licensed Radio Amateur is allowed to use an existing repeater.
RAYNET talk-through is a very similar thing, except it is done on an ad hoc basis. Talk-through is used where it is needed at a particular event. It is provided by and for the sole use of the RAYNET operators at that event.
A single talk-through facility is often enough to link the Control station with all outstations.
Talk-through in tandem
To cover longer distances or larger areas, talk-through units can be made to work one after another.
In the above diagram, Control could be in Stockton-on-Tees, the first TTU could be on a hill overlooking Stockton and the second TTU could be on a hill overlooking Durham City.
Alternatively, Control could be in an underground room in Middlesbrough, the first TTU could be in a nearby car park and the second TTU could be on a hill overlooking Middlesbrough.
You can send an e-mail message to Cleveland RAYNET Group by clicking here. This will fail if you use web-based e-mail.
Page updated on 09 January 2017