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2.3.
Tunin
to a Fre
uency
1.
Set
SUPPLY switch to TRANSMIT.
30 seconds af ter switching on the transmitter i§ ready for
operation.
2. Turn I)IrmR control fully clockwise.
3. If the display does not show zero, clear display using C key
of keyboard.
4. Select the desired frequency with the keyboard or look up the
desired frequency in frequency chart and read frequency No. and
key frequency No. into keyboard. If a frequency No. i8 chosen
it will be displayed fcir approx. I see. £olloued by display of
the actual f requency.
5. Set BAND switch to position indicated by flashing band indicator
lamp. If no flashing occurs the BANI) 8uitch is already correctly
Set.
6. Press TUNE button and adjust TUNING control for maxinun clef lection
on ANTENNA CURRENT meter.
7. Select desired type of service with col)E and POwER Switches.
Transmitter is now ready for operation.
2.4.
0
eratin
Controls and their Function
2.4.1. The SUPPLY switch has four positions:
OFF
Receiver and transmitter are switched off.
RECEIVE ONLY
Power Pack is Started up and supplies poser to re-
ceiver (and grid bias to transmitter output valves)
Remote speaker of receiver is connected to receiver
Olltput .
STAND BY
TRJINSMIT
Power Pack supplies power to receiver, exciter, band
indicator and filaments of transmitter output valves.
Remote speaker of receiver is connected to receiver
Output .
Transmitter can be keyed. Retiro[e speaker of receiver
is disconnected.
NOTE: A built-in delay circuit protects the output valves of the
transmitter from being keyed for the first 30 9ec. after switching
from OFF or RECEIVE ONLY to STAND BY or TRANSMIT.
2.4.2. The POWER switch has six positions:
LOW PORER
SIITLEX
Transmitter is keyed from handset key, tror8e key or
telex equipment depending on node of operation. Receiver
i8 muted while transDitt:ing.
Transmitter can be driveti to approx. I/20 £o full output
POUer .
2-2
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