Selecting Packet Transmit Interval; Selecting Packet Transmit Delay; Selecting Status Text Transmit Rate; Restricting Reception Of Aprs Data - Kenwood TH-D7A(G) Instruction Manual

SELECTING PACKET TRANSMIT INTERVAL

You can change the interval for automatically transmitting
APRS data. Access Menu 2–D (TX INTERVAL) and
select 0.2, 0.5, 1, 2, 3, 5, 10, 20, or 30 minutes. The
default is 5 minutes.
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Note:
With "AUTO" in Menu 2–C and Beacon ON, pressing [OK] to
complete the setting causes the APRS data to be immediately
transmitted. After that, APRS data is transmitted at intervals of the
selected period.
While signals are present, APRS data is not transmitted after the
interval. Approximately 2 seconds after signals drop, transmitting is
executed.

SELECTING PACKET TRANSMIT DELAY

If necessary, adjust the time delay between keying up of the
transmitter and the start of APRS data to the transmitter.
Increase this delay, for example, when recipients miss the
initial part of your packets and thus fail to decode the data.
Access Menu 2–P (TX DELAY) and select 100, 200, 300,
400, 500, 750, or 1000 msec. The default is 500 msec.
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SELECTING STATUS TEXT TRANSMIT RATE

A long status text string can double the size and length of the
APRS packet. Access Menu 2–A and specify how frequently
status text is included in APRS packets to be transmitted.
The selectable range is 1/1 to 1/8 and OFF (default). If you
select 1/3 for example, status text is included in your packets
once every 3 times; accordingly stations who receive your
packets will see your status text once every 3 times.
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RESTRICTING RECEPTION OF APRS DATA

If APRS is popular in your country, you may receive too
many APRS packets for a short period. If this disturbs
your APRS activities, specify a distance from your
location. You will not receive APRS data from stations
beyond this distance. Access Menu 2–7 (POS LIMIT)
and select the range from 10 to 2500 in steps of 10, plus
OFF (default). The unit is mile or kilometer depending
on the selection in Menu 2–H (mile/km) {page 7}.
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