Lafayette Petrusse, Owner'S Manual

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Section 3 Operation
Controls/lndicators
There are 17 Controls and 10 indicators on the front panel of your Lafayette PETRUSSE.
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1 Power/Qn-off
Place in Power (lever up) position to apply power to the
unit.
2 NB/ANL Switch
When set to NB/ANL, this switch activâtes the noise
blanker and the automatic noise limiter circuits simui-
taneously.
The noise blanker is effective for répétitive impulse type
noise such as ignition interférence and the automatic noise
limiter is used to reduce atmospheric noises.
If you find that the réception is reîatively free of noise, you
can set this switch to OFF for best sensitivity.
3
R. ВЕЕР Switch
This switch serves to switch on or o ff the roger beep circuit.
Place this switch in R. ВЕЕР to switch on.
4 ECHO Switch
Set this switch to ECHO when you desire to add an echo
effect to your transmitting voice.
This switch has no
effect on receiving.
5
Antenna A -В Selector
For switchîng between two types of antennas or dummy
load that may be connected to the unit. You may connect
a ground plane antenna (non-directional) to Antenna A
réceptacle, and a beam type antenna (highly directions!)
to the Antenna B réceptacle on rear panel for long-rangé
communications.
6 SWR-Calibrate Switch
This switch changes the SWR meter function in two ways:
•C A L IB (lever down): Used to calibrate the SWR Meter
before measuring your antenna SWR ratio.
• SWR (lever up): Used to directly read the SWR of ante­
nna connected to the unit. See Accessory Circuit Oper­
ation.
7 Calibrate Control
This control is used for caiibrating the SWR meter for
accurate SWR readout in conjunction with the SWR-
CALIB Switch.
Note:So that the meter functions as RF power meter,
be sure to set this control to fully countercîockwise posi­
tion marked RF.
8 Fine Tuning
Permits fine-tuning by changing the receiving frequency
by ± 1 kHz.
9 RF Gain
This control is used primarily to optimize the réception
in strong signal areas. Under normal operating conditions
the control should be turned fully clockwise. When strong
overloading or distorted signais are received rotate this
control countercîockwise to reduce gain.
Note: The Squelch Control 15) may require readjustment
with reduced RF Gain control.
10 Microphone Gain
A preamplifier circuit is built into this unit to increase
microphone gain. Experiment with this control for the
setting that will best suit your individual use.
11 Channel Selector
Has 40 detents in a turn and selects one of the channels
desired. Use the Channel selector in conjunction with the
Band Select switch. The seiected channel is digitally dis-
played in the window above the selector.
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