Satellite Operation; Satellite Communications Outline - Icom IC-820H Instruction Manual

SATELLITE OPERATION 1O Hi
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-820H.
* Mode B operating diagram
«== Uplink
<== Downlink
435 MHz
band
145 MHz 145 MHz
band band
[CHECK]
Monitors an uplink
frequency.
RIT> )
While pushing this switch, the
tuning dial changes the uplink
frequency (main band) only.
Satellite communications is possible only when a
satellite is in view and its transponder is activated.
[EXAMPLE]: AMSAT OSCAR 13 (AO-13), Mode B
: 435.423-—435.573 MHz
> 145.975—145.825 MHz
: Reverse
* Uplink frequency
* Downlink frequency
* Tracking direction
> 145.812 MHz
: 145.985 MHz
* General beacon frequency
¢ Engineering beacon frequency
[CALL-Fha]
Activates RIT function while in
the satellite mode for downlink
frequency (sub band).
[VFO]
Selects the satellite VFO
mode.
SSB/CW
Gs} GJ
, as
-] COMI en Sait: ROL LED tH2z DIGIT. S
LOOP pie ST a ©
COMP
[SCAN: Kj]
frequency (sub band) only.
One of these appears to indicate a
tracking direction of normal or
reverse.
SATL-N
SATL-R
Uplink frequency
(transmit frequency)
While pushing this switch, the
tuning dial changes the downlink
[MEMO]
Selects the satellite memory
mode.
Transfers the memory
contents to the satellite VFO
when pushing [FUNC] then
this switch.
[MW]
Programs both uplink and downlink
frequencies to the selected satellite
memory channels.
One of these appears to
indicate the satellite VFO or
satellite memory mode.
USB VFO
MEMO /
me a
uf
Satellite memory
channel number
Downlink frequency
(Receive frequency)
34