7.5. Radio Tab
•
“Callsign”
– The callsign of your station with SSID extension. This field can be up
to 6 characters long. The default SSID is 0 and allowed SSID's are between 0 and
15,
•
“Latitude”
- north-south position of your radio station,
•
“Longitude”
- east-west position of your radio station.
For APRS beacons latitude is encoded as “XXYY.ZZD” where XX are degrees, YY are
seconds (1/60 of a degree), ZZ are hundredths of seconds (1/100), D can be N for north
or S for south.
Longitude is encoded as “XXXYY.ZZD” where XXX are degrees, YY are seconds (1/60 of a
degree), ZZ are hundredths of seconds (1/100), D can be E for east or W for west.
You can easily find your coordinates in APRS format on aprs.fi map, they are displayed in
upper-left corner of the screen.
•
“TX delay (ms)”
– Delay time in milliseconds for sending an APRS packet. It is the
length of preamble sent before packet and necessary for radio receivers to
synchronize with our packet. The recommended value is not less than 250ms,
•
“Quiet time (ms)”
– Minimum time off after the radio channel is busy. After this
time next packet can be sent from the transmit buffer,
•
“Randomize quiet time”
- this option adds some randomization to Quiet time
value which changes every packet sent with a range selected in this box,
•
“PTT”
– push-to-talk output selection, we can choose between two options:
•
“separate output”
– PTT output pin is shorted to ground while
broadcasting,
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