Raveon Technologies » System Design http://www.raveon.com/data_radio_info Raveon Technologies Tech Blog Thu, 22 Dec 2011 22:03:26 +0000 en hourly 1 http://wordpress.org/?v=3.0.5 Repeating For Extended Range/Serial Port http://www.raveon.com/data_radio_info/repeating-for-extended-rangeserial-port-25/ http://www.raveon.com/data_radio_info/repeating-for-extended-rangeserial-port-25/#comments Wed, 30 Sep 2009 23:55:29 +0000 ChrisSivori http://raveontech.com/data_radio_info/?p=25 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). 

 

 

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