V A L A V I O N I C S L T D
I N S 4 2 9 I N T E G R A T E D N A V I G A T I O N S Y S T E M
I N S T A L L A T I O N A N D O P E R A T O R ’ S M A N U A L
Revision 3
Page 26 of 27
March 2013
“35” .................... Message identifier.
mk ...................... Active frequency: m = MHz, where m = desired MHz frequency – 30h, ranging
from 118 to 136 MHz, 162 (i.e., 76h to 88h, A2h); k = (kHz offset / 25 kHz) +
30h, ranging from 000 to 975 kHz steps.
mk ...................... Standby frequency: m = MHz, where m = desired MHz frequency – 30h,
ranging from 118 to 136 MHz, 162 (i.e., 76h to 88h, A2h); k = (kHz offset / 25
kHz) + 30h, ranging from 000 to 975 kHz steps.
a.......................... Transceiver status:
R = Normal receive
T = Transmit enabled
S = Stuck mic
F = Comm failure
s.......................... Squelch test setting: (ASCII) 0 = automatic; 1 = test
Example message:
$PMRRV35G4LFR0<chksm><LF>
Active frequency is 119.100 MHz, the standby frequency is 124.550 MHz, receiver function, squelch is
automatic.
C
OM
S
OFTWARE
V
ERSION
This message is used to output the version string for the VHF COM receiver software.
Message format:
“V” ..................... Message class. This is a VHF NAV message.
“36” .................... Message identifier.
vvvv ................... Software version in ASCII
Example message:
$PMRRV300103<chksm><CR><LF>
COM software is version 1.03.
V
OLUME AND
S
QUELCH
S
ETTING
This command is sent anytime there is a change in either the volume or squelch settings, or is requested by
using a Request Data Output "24" command.
Message format:
"V" ................. Message class - VHF NAV Message
"71" ................ Message Identifier
"vs"................. Volume level and Squelch Level:
v = Desired volume level in encoded hexadecimal, where v = desired
level + 0x30 with a range between 0 - 20, 0 being muted
s = Desired squelch level in encoded hexadecimal, where s = desired level
+ 0x30 with a range between 0 - 20, 0 being off
Example Message:
$PMRRV71;?<chksum><CR><LF>
This example command shows the volume level at 11 and the squelch at 15.
M
IC GAIN AND
S
IDETONE
This command is sent anytime there is a change in either the volume or squelch settings, or is requested by
using a Request Data Output "24" command.
