I Satellite Communications Outline; I Satellite Notes; I Entering Into The Satellite Mode - Icom IC-910H Instruction Manual

8
SATELLITE OPERATION

I Satellite communications outline

Both satellite mode B (435 MHz uplink, 145 MHz
downlink) and mode J (145 MHz uplink, 435 MHz
downlink) can be operated from the IC-910H, and
mode L can be operated when the optional UX-910
1200 MHz BAND UNIT
Satellite communications is possible only when a satel-
lite is in view and its transponder is activated.
145 MHz
band

I Satellite notes

1. NEVER set the output power too high. Too much
power will shorten the satellite's life.
Set your transmit power so that your downlink sig-
nal level is lower than the beacon's signal level.
2. Confirm a satellite's operating mode in advance
through documentation (magazines, etc.) or via ap-
propriate satellite tracking software. In the wrong
mode, you cannot use the satellite even if you re-
ceive its beacon signal.
I Entering into the satellite
mode
Operating frequencies in satellite mode can be set
both before and after entering into the satellite mode.
Normal and reverse tracking are available.
◊ Transferring the VFO frequency to the
satellite VFO
q Set the downlink frequency (receive) in the MAIN
band.
w Set the uplink frequency (transmit) in the SUB band.
48
is installed.
FUJI 3 (FO-29)
435 MHz
435 MHz
band
band
From The N3UJJ.COM Document Library From The N3UJJ.COM Document Library
Orbit information
Orbit information describes satellite location, reach-
ing angles, etc. This information may be available in
ham magazines or organization issues, such as from
ARRL, RSGB handbook, etc.
Appropriate satellite tracking software is also conve-
nient.
• Mode B operating diagram
[Example]: FUJI 3 (FO-29), Mode B
Uplink
• Uplink frequency:
Downlink
145.9000–146.0000MHz
• Downlink frequency:
435.8000–435.9000 MHz
145 MHz band
• Tracking direction:
Reverse
• CW beacon frequency:
435.7950 MHz
3. Preamplifiers may be necessary to receive satellite
signals. Optional AG-25, AG-35 and AG-1200 (for
UX-910) are available to use with the IC-910H.
(p. 16)
4. When you use a reverse tracking satellite in SSB
mode, use the LSB for the uplink frequency and
USB for the downlink frequency.
• When using a normal tracking satellite in SSB mode,
use USB for both the uplink and downlink frequencies.
e Push [SATELLITE] for 1 sec. to transfer the fre-
quencies, set in steps q and w, into the satellite
VFO.
• Satellite mode is automatically selected after transfer-
ring.
• "SATL" indicator with either "NOR" or "REV" indicator ap-
pears.
• VFO and memory mode indications are displayed in the
SUB band (lower area) during satellite mode.
[SATELLITE] for 1 sec.