Repeating For Extended Range/Serial Port
For longer communication ranges, high RF noise environments or obstructed line of sight applications it may be necessary to use a repeater to establish a reliable communications link.
Incorporated in the M7 radio is a built in store-and-forward repeater function. The repeater function works only in the Packet Mode, and will not repeat streaming messages. A repeater can extend the range of a system by 2-20 times, depending upon how high-up above the average terrain the repeater is mounted.
The following table shows a typical repeater system configuration in packetized mode.
| AT Command |
Radio Modem #1 |
Repeater Modem |
Remote Modem #2 |
Description |
|
ATMY |
1234 | 1235 | 1236 | Individual unit address for this particular modem. |
| ATDT | 1236 | 1234 (not important) | 1234 | Destination address to send data to. |
| ATMK | FFFF | FFFF | FFFF | Address mask. FFFF means all bits are used. |
| ATXR | 0 | 1 | 0 | Enable/Disable repeater function. Only enable it on the particular radio that will be the repeater. |
| ATX1 | N/A | 1234 FFF0 1234 FFF0 | N/A | In the repeater, set the addresses this unit will store-and-repeat to/from. By setting the repeater address mask to FFF0, this repeater will repeat any data packet with an address having 123 in the first 3 digits. (1230 through 123F). |