Serial Interface Specifications
60 Apollo GX50/60/65 Installation Manual
t.......... list type, outputs a 1
iiii...... ident, four character ASCII
Example Message
$PMRRC041SLE<space>99<cr>
Output ident of “SLE” for the following frequency information.
Frequency Data Output
This message is used to output the airport frequency information for the previously output
ident.
Message Format
$PMRRC05tfmk<chksum><cr>
05....... message id
t.......... list type, input 1
f ......... frequency type:
0 = TWR, tower frequency 8 = CTF, common traffic advisory frequency
1 = GND, ground frequency 9 = DEP, departure
2 = ATS, for ATIS : (3Ah) = FSS, flight service station
3 = ATF, air traffic frequency ; (3Bh) = RFS, for remote flight service station
4 = APP, for approach < (3Ch) = UNI, for unicom
5 = ARR, for arrival = (3Dh) = MF, mandatory frequency
6 = AWS, automatic weather station > (3Eh) = not defined, do not use
7 = CLR, clearance/delivery ? (3Fh) = undefined, for other frequency types
mk...... frequency:
m = desired frequency in MHz in hexadecimal, where m = desired frequency -
30h , with desired frequency in range of 118 to 136 MHz, or 162 MHz.
k = desired frequency in kHz where k = (desired frequency / 25 kHz) + 30h, with
desired frequency in range of 000 to 975 kHz in 25 kHz steps, or 0 to 39.
Example Message
$PMRRC0511IT64<cr>
Output a ground frequency type, 121.900 MHz.
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