GTR 200 Installation Manual
190-01553-00
Page B-10
Rev. B
B.2.2.6 Request Output Data
This message is used to request an output message be sent.
Message format:
“MRR” ............ Company identifier.
“C”................... Message class.
“06” ................. Message identifier.
ii....................... Output identifier of requested message: “03” = software version message.
dd..................... Message data, set to “00”.
a ....................... Request type, set to “0”.
Example message:
$PMRRC0603000<chksm><CR><LF>
Request software version message be sent.
B.2.3 Output Messages
B.2.3.1 Transceiver Status
This message is used to output the current status of the transceiver. This message is sent at a 1Hz rate or
whenever the transceiver status changes.
Message format (GTR 200/GTR 225/GNC 255):
“GRM” ............ Company identifier.
“C”................... Message class.
“01” ................. Message identifier.
mk.................... Active frequency: m = MHz, where m = desired MHz frequency - 30h, ranging
from 118 to 136 MHz, (i.e. 76h to 88h, A2h); k = (KHz offset / 25KHz) + 30h,
ranging from 000 to 975KHz in 25 KHz steps.
mk.................... Standby frequency: m = MHz, where m = desired MHz frequency - 30h, ranging
from 118 to 136 MHz, (i.e. 76h to 88h, A2h); k = (KHz offset / 25KHz) + 30h,
ranging from 000 to 975KHz in 25 KHz steps.
a ....................... Transceiver status:
I = Intercom (no other status applicable)
R = Normal receive
M = Monitor selected
T = Transmit enable
S = Stuck mic
F = Comm failure
s ....................... Squelch setting: (ASCII) 0 = automatic; 1 = manual override
hh..................... COM channel spacing: (ASCII) 25 = 25kHz
o....................... Active frequency 8.33 KHz offset: (ASCII) 0 = 25 KHz frequency (.000)
o....................... Standby frequency 8.33 KHz offset: (ASCII) 0 = 25 KHz frequency (.000)
Example Message:
$PGRMC01G4LFR02500<chksm><CR><LF>
Active frequency is 119.100MHz, the standby frequency is 124.550MHz, unit is receiving, and squelch is
automatic.
Summary of Contents for GTR 200
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