Kenwood RC-D710 - Manual (Page 49)

APRS-
Setting BeACon tx AlgoRitHm
Enter Menu mode and access Menu 611.
n Packet transmit method
Select the operation method for transmitting APRS
packets. The table concludes how operations differ
depending on the selection.
[MANUAL]:
Each press of
[BCON] transmits your APRS packet.
[PTT]:
1 Press
[BCON] to switch the function ON.
• “BCON” appears and blinks.
2 Press and hold the microphone [PTT], then speak
into the microphone.
3 Release the microphone [PTT].
• Releasing the switch transmits your APRS packet.
• You cannot retransmit an APRS packet unless the
time selected in passes. Wait until
“BCON” starts blinking to indicate transmitting is ready.
4 To switch the function OFF, press [BCON] again.
[AUTO]:
1 Press
[BCON] to switch the function ON..
• “BCON” appears.
• Switching the function ON transmits your APRS packet
once. After that, APRS packets are automatically
transmitted at intervals of the period selected in
INTERVAL >.
2 To switch the function OFF, press [BCON] again.
[SmartBeaconing]:
1 Press [BCON] to switch the function ON..
• “BCON” appears and blinks.
• After manually transmitting your station position
data 1 time, your position data will be automatically
transmitted using the time interval set under
“SmartBeaconing”
2 To switch the function OFF, press [BCON] again.
Note: After setting “SmartBeaconing”, the TX Interval Time,
Decay Algorithm and Proportional Pathing features will no longer
operate.
n tx interval time
You can change the interval for automatically
transmitting APRS packets. Access
> and select 0.2, 0.5, 1, 2, 3, 5, 10, 20, or 30 minutes.
The default is 3 minutes.
Note:
u
With “AUTO” in < METHOD > and Beacon ON, pressing the
Tuning control to complete the setting causes the APRS packet
to be immediately transmitted. After that, APRS packets are
transmitted at intervals of the selected period.
u While signals are present, an APRS packet is not transmitted
after the interval. Approximately 1 second after signals drop,
transmitting is executed.
n Decay Algorithm
This function continuously extends the packet
transmission interval in the case that there is no
change of position information.
• When the position data does not change, the data is
transmitted based on a Decay Algorithm (1 minute, 2
minutes, 4 minutes, 8 minutes, 16 minutes, 32 minutes, 32
minutes, 32 minutes, etc.)
• When My station position data changes, the data is
transmitted using an interval time based on the set Initial
Interval or Proportional Pathing.
• When the set time elapses and transmission is performed
but a busy signal is present, the transceiver does not
transmit. When there is no longer a busy signal, the
transceiver attempts to transmit after 1 second.
Note:
u
While transmitting by pressing the [PTT] switch, beacon
transmission is reserved .
u If My station call sign is not set, My station data will not be
transmitted.
u Depending on this interval, the transmission of the message will
become a 1 minute interval.
n Proportional Pathing
This function automatically changes the transmit
packet path with the elapsed time.
Operation example for when PROPORTIONAL
PATHING = ON
Transmission interval is 1 minute. (When the DECAY
ALGORITHM = ON, the decay transmission interval
takes precedence.)
The packet path changes with each transmission as
shown below (when the packet path is set as WIDE1-
1,WIDE2-2).
1 minute : DIRECT
2 minutes : WIDE1-1 (1 Hop)
3 minutes : DIRECT
4 minutes : WIDE1-1, WIDE2-1 (2 Hops)
5 minutes : DIRECT
6 minutes : WIDE1-1 (1 Hop)
7 minutes : DIRECT
8 minutes : WIDE1-1, WIDE2-2 (3 Hops)
This is repeated.
When jointly using a Decay Algorithm, if the speed is 1 knots
or slower, a Decay Algorithm pattern is used for transmitting,
but if the speed is 3 knots or faster, it changes to Proportional
Pathing.