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Serial Interface Specifications
Apollo GX50/60/65 Installation Manual
73
TRANSCEIVER STATUS (WHEN MOVING MAP MODE IS ENABLED
ONLY)
This message is used to output the current active and standby frequencies and the transceiver
status (receive, transmit, monitor, ...). This message is not output when MapCom is enabled.
This data type is not available for the GX50.
Message format:
01................... Message ident.
mk.................. Active frequency: m = MHz, where m + 30h = desired MHz frequency of
118 to 136, 162 (or 76h to 88h, A2h); k = kHz where k - 30h = desired
kHz offset of 0 to 39 (or 0h to 27h) in 25kHz steps (1’s digit is not shown
on the display).
mk.................. Standby frequency: m = MHz, where m + 30h = desired MHz frequency
of 118 to 136, 162 (or 76h to 88h, A2h); k = kHz where k - 30h = desired
kHz offset of 0 to 39 (or 0h to 27h) in 25kHz steps (1’s digit is not shown
on the display).
a..................... Transceiver status:
I = intercom
R = normal receive
M = monitor selected
T = transmit enabled
S = stuck mic
s ..................... Squelch test setting: (ASCII) 0 = automatic; 1 = test.
Example message:
$PMRRC01G4LFR0<chksm><CR><LF>
Active frequency is 119.100MHz, the standby frequency is 124.550MHz, receive
function, squelch is automatic.
Note: This message is output at a one second rate and whenever the transceiver function or
status changes. The message is inhibited during test mode operation.