Setting Beacon Information - Kenwood TH-D74A User Manual

Decay Algorithm
This function continuously extends the packet transmission
interval in the case that there is no change of position
information.
1 Access Menu No. 512.
2 Select [On] or [Off].
• When the position data does not change, the data is
transmitted based on a Decay Algorithm (ex. Interval
Time = 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.
• 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.
Note:
◆ While transmitting by pressing the [PTT] switch, beacon
transmission is reserved.
◆ If My Callsign is not set, the APRS packet will not be
transmitted.
◆ Independent of this interval, the transmission of the message is
in 1 minute intervals.
Proportional Pathing
This function automatically changes the transmit packet path
with the elapsed time.
1 Access Menu No. 513.
2 Select [On] or [Off].
Operation example for when <Proportional Pathing> = ON
Transmission interval is 2 minutes. (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,
WIDE2-1).
2 minutes: DIRECT
4 minutes: WIDE1-1 (1 Hop)
6 minutes: DIRECT
8 minutes: WIDE1-1, WIDE2-1 (2 Hops)
10 minutes: DIRECT
12 minutes: WIDE1-1 (1 Hop)
14 minutes: DIRECT
16 minutes: WIDE1-1, WIDE2-1 (2 Hops)
This is repeated.
When jointly using a Decay Algorithm, if the speed is
1 knot or slower, a Decay Algorithm pattern is used for
transmitting, but if the speed is 3 knots or faster, it changes
to Proportional Pathing.

SETTING BEACON INFORMATION

Speed Information
Select whether or not to transmit speed information when
using APRS data communications.
1 Access Menu No. 514.
2 Select [On] or [Off].
Altitude Information
Select whether or not to transmit altitude information when
using APRS data communications.
1 Access Menu No. 515.
2 Select [On] or [Off].
• When the beacon type is [NAVITRA], this information
will not appear on the display.
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