Icom IC260-A Instruction Manual page 24

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In the "RB-TA" position, the receiving frequency is controlled by "B" VFO and the trans-
mitting frequency is controlled by "A" VFO.
MEMORY channels can not be used for duplex operation.
For more details refer to "HOW TO TUNE" on page 13 and "MEMORY CHANNEL OPERA-
TION" on page 18.
If the lower output power (1 watt) is sufficient, set the Squelch Control and RF Power Switch
to the LOW (out) position.
Depress the PTT (push to talk) Switch on the microphone and the transceiver will transmit.
At the same time the TRANSMIT indicator will be illuminated red and the meter will provide
and indication of relative power output of the transmitter.
SATELLITE COMMUNICATION
At present there are two active satellites for amateur radio use, AMSAT OSCAR 7 was launched in
November, 1974 and AMSAT OSCAR 8 was launched in March, 1978. Satellite communications
can be made by using an IC-260A/E for receiving/transmitting and 1С-402 (70 centimeter SSB/CW
transceiver) for transmitting/receiving in Mode B and Mode J, and an IC-260A/E for transmitting
and IC-701 (HF SSB/CW/RTTY transceiver) for receiving in Mode A.
NOTE: FM mode is prohibited for these satellite communications.
For frequency information refer to the chart below. Further information on communicating
through satellites can be found in various amateur radio books and periodicals.
UPLINK (Transmitting) DOWNLINK (Receiving)
FREQUENCY FREQUENCY BEACON
A 145.85MHz ~ 145.95MHz 29.AMHz ~ 29.5MHz 29.502MHz
(USB/CW) (USB/CW) 435.100MHz
FREQUENCY CHART
SATELLITE
432.125MHz ~ 432.175MHz 145.975MHz ~ 145.925MHz
(USB/CW)
(LSB/CW)
145.975MHz
145.85MHz ~ 145.95MHz 29.4MHz ~ 29.5MHz
(USB/CW)
(USB/CW)
29.402MHz
145.90MHz — 146.00MHz 435.2MHz —435.1MHz
(USB/CW) (LSB/CW) 435.097MHz
SATELLITE