Standard Horizon HX-870 - Manual (Page 26)

Page 26 HX870
8.3.1 Transmit Power
The TX output power of the HX870 is set to high level (6W) in factory default,
and the “ [HI]” indicator is displayed on the top part of the screen.
To switch the TX output power:
1. Press
◄/► key repeatedly until the [HI],
[MD], or [LOW] soft key is displayed at the
bottom of the screen.
A
P
16
DISTRESS
VOL
118°09.582
33°37.120
W
s
LOC 09.56 AM
TX HI USA
TIME
LON
LAT
C
A
MEM
P-SET
A
P
16
DISTRESS
VOL
118°09.582
33°37.120
W
s
LOC 09.56 AM
TX MD USA
TIME
LON
LAT
C
A
MEM
P-SET
A
P
16
DISTRESS
VOL
118°09.582
33°37.120
W
s
LOC 09.56 AM
TX LO USA
TIME
LON
LAT
C
A
MEM
P-SET
2. Press the [HI], [MD], or [LOW] soft key to
switch between HI (6W), MD (2W), or LO
(1W) output power.
NOTE
• When the SBT-13 Alkaline Battery Case is used, only the low power
(1W) can be set.
• Depending on the remaining power of the SBR-13LI Battery Pack, the
HX870 may transmit with the medium or low power even though the
“ [HI]” indicator is displayed.
8.4 TRANSMIT TIME-OUT TIMER (TOT)
When the PTT button is held down, transmit time is limited to 5 minutes. This
limits unintentional transmissions due to a stuck microphone. About 10 seconds
before automatic transmitter shutdown, a warning beep will be heard from the
speaker(s). The transceiver will automatically go to receive mode, even if the
PTT button is continually held down. Before transmitting again, the PTT button
must first be released and then pressed again.
NOTE
Once the transmitter is shut down by the TOT, transmission to the last
channel is only allowed 10 seconds after the shutdown.