Icom IC-821H Instruction Manual page 43

W 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
signal level is lower than the beacon's signal level.
2. Confirm a satellite's operating mode in advance
through documentation (magazines, etc.).or via
appropriate satellite tracking software. In the
wrong mode, you cannot use the satellite even if
you receive its beacon signal.
W Operation
@) Decide on a usable satellite.
© Confirm the approximate location of the satellite
and operating mode (e.g. "B," "J," etc.) through
documentation (magazines, etc.) or via appro-
priate satellite tracking software.
3) Set the antenna direction for the desired satellite.
@ Select satellite mode on the transceiver.
- Push [FUNC] then [W*REV] or [A*NOR] to select
reverse tracking or normal tracking, respectively.
(Most satellites can be used with reverse tracking.)
- When [W-eREV] or [A*NOR] is pushed for 2 sec. in
this step, the displayed frequencies and modes can
be used in the satellite VFO.
Appears when reverse tracking is selected.
©) Select a mode on the transceiver.
Downlink
(main band)
Reverse tracking type USB (or CW) LSB (or CW)
Normal tracking type USB (or CW) USB (or CW)
Another operating mode may be required for digital mode
operation.
© Set the downlink frequency (main band) to the
beacon frequency.
- Refer to a ham magazine or book for detailed infor-
mation.
- Adjust the antenna direction so that the S-meter
swings to its strongest level.
- The S-meter level should be noted for transmit
power selection during a loop test.
Uplink
(sub band)
SATELLITE OPERATION 9
3. Preamplifiers may be necessary to receive satellite
signals. Optional AG-25 and AG-35 are available
to connect to the IC-821H. (p. 56)
- When using a normal tracking satellite in SSB mode,
use USB for both the uplink and downlink frequencies.
@ Perform a loop test.
- Set the downlink frequency (main band) to a vacant
frequency within the satellite's coverage.
- Push [SCANe J] then, set the uplink frequency (sub
band) while transmitting a single tone such as a
whistle to find your downlink signal and monitor your
own signal correctly. Push [SCAN: J] after setting.
USB
LSB RAIT UIE re
sna IG GS
The main band frequency disappears
after pushing [SCAN: §].
NOTE: To avoid excessive power, set the output
power so that the downlink signal strength is
Y lower than the beacon's strength.
Set the desired frequency to begin your satellite
communications.
-Both the downlink and uplink frequencies are
changed simultaneously.
@) When your downlink audio drifts (Doppler effect),
push [SCAN-§] then rotate the tuning dial to
adjust the uplink frequency (sub band) only.
Push [SCAN> §]] again after setting.
- When a particular station's audio is off frequency,
use the RIT function (push [CALL* RIH).
( To exit satellite operation, repeat step @.
- Push [FUNC] then ['W*REV] or [A*NOR].
- The main and sub band frequencies can be trans-
ferred when pushing [W*REV] or [A*NOR] for 2
sec. on this step.
6
CONVENIENT: As the transceiver has 10
satellite memory channels, once set, desired
satellites frequencies can be recalled instantly.
NOTE: As the downlink (main band) signal is
applied to the sub band unit in circuitry in satellite
mode, an optional FL-133 CW NARROW FILTER is
necessary to operate CW-N mode.
ALLL AML
40