Cessna TURBO CENTURION T210M 1978 Pilot Operating Handbook page 252

SSB HF TRANSCEIVER
(TYPE ASB-125)
PILOT'S OPERATING HANDBOOK
SUPPLEMENT
2
1.
CHANNEL WINDOW - Displays selected channel.
2. RELATIVE POWER METER - Indicates relative radiated power of the power
amplifier/ a ntenna system.
3. MODE SELECTOR CONTROL - Selects one of the desired operating modes:
USE - Selects upper sideband operation for long range voice communica-
tions. _ , ,.,.....,__
AM - Selects compatible AM operation and full AM reception.
TEL - Selects upper sideband with reduced carrier, used for public corres-
pondence telephone and ship-to-shore.
LSE - (Optional) Selects lower sideband operation (not l ega l in U.S.,
Canada and most other countries).
4. SQUELCH CONTROL - Used to adjust signal threshold necessa ry to a ctiv ate
receiver audio. Clockwise rotation increases background noise (decreases
squelch action); counterclockwise rotation decreases background noise. ,,....,.._,,
5. CLARIFIER CONTROL - Used to "clarify" single sideband speech during
receive while in USE mode only.
6. CHANNEL SELECTOR CONTROL - Selects desired channel. Also selects AM
mode if channel frequency is 2003 kHz, 2182 kHz or 2638 kHz.
7. ON - AUDIO CONTROL - Turns set ON and controls receiver audio gain. ,,.,.....,__
Figure
1.
SSB HF Transceiver Operating Controls