FSG 70/FSG 71M
O
PERATION
M
ANUAL
Reprint July 1998
Page
4 - 3
W. Dittel GmbH
4.3
Programming the Channel Frequency Memory (
FSG 71M
only)
The
FSG 71M
transceiver is equipped with 10 memory cells which are able to store one
frequency each in the range from 118.000 to 136.975 MHz. The stored frequencies are
non-volatile.
1. Rotate channel selector knob fully clockwise.
2. Select the desired frequency by rotating MHz- and kHz knobs.
3. Rotate channel selector knob to desired channel number (1 to 10).
4. Enter the frequency by depressing (approx. 1 sec.) the store button (STO) into the
memory. If a frequency is already stored in that certain channel it will be overwritten.
The function of the STO button is electrically delayed to reduce memory loss
caused by accident touching.
4.4
Recall of Stored Frequencies
Rotate channel selector knob to desired channel number. The stored frequency will
appear on the display and the transceiver is tuned.
Only for Users of
FSG 71M
Transceivers
If the built-in battery of the electronic memory is defective, the memory
content is lost when the unit is switched OFF. For safety reasons the
memory battery should be changed every five to six years by authorized
personnel (recommended date of change see separate tag on unit).
4.5
Battery Check
The
FSG 70-System
transceivers indicate low battery voltage by causing the frequency
display to blink if the power supplied drops below 11 volts.
When operating from battery:
Depending on battery capacity and the duration of transmit operation, the following
operating times may remain after blinking starts until the battery is fully exhausted.
Reference:
approx. 20°C, 6.5 Ah battery, feeding only the transceiver. Operating
conditions: 10% transmit, 20% receive, 70% stand by
ACTION
CONSEQUENCE
a) Blinks while transmitting
Approx. 5 hrs. operation left
b) Blinks also while receiving
Approx. 45 min. operation left
Recommendation:
Transmit only when absolutely
necessary!
c) Short-time blinking in "stand
by" mode (switch at "SQ"
position, no reception)
Cease transmitting!
Approx. 45 min. of receive-only operation left.
d) Continuous blinking in
"Stand by" mode
Turn off unit! Recharge battery as soon as possible!
(Refer to Section 4.7 Emergency Operation)
IMPORTANT!
•
The transitions for a), b), c), and d) have fluent character, the
battery recovers somewhat after load is reduced.
