Notes on Operation
1)
The transceiver operates on 12 to 14 volts DC. The power connector center pin
(2.1mm) is positive. Receive current consumption is about 35 ma. Transmitter
power consumption is 400 to 800 ma.
2)
Transmitter power output is adjustable with the rear panel knob from near 0 to 5
watts or more. The output impedance is 50 Ohms. The final RF output FETs are
intended for CW duty cycles. Do not hold the key down for more than a few
seconds at high output levels. Please turn the power level down as much as is
possible when adjusting an antenna tuner to prevent abuse to the transmitter
FETs, and to lessen QRM.
3)
The switch on the rear panel is a receiver 12 dB attenuator. When engaged, the
small LED is illuminated in the top center of the panel as an indicator. This switch
has no effect on the transmitter.
4)
The LED at the lower center of the panel indicates the relative strength of the signal.
The LED sensitivity can be adjusted with trimmer potentiometer R11. Adjust for a
dim glow with no signal. If you wish to disable this LED, turn R11 fully
counterclockwise.
5)
The transmitter sidetone level will vary as the power is adjusted. The level can be
adjusted with trimmer potentiometer R7 if desired. The sidetone you hear is the
actual transmitted signal being heard by the receiver.
6)
Do not use “mono” plugs for the audio out. Use only “stereo” connectors. Mono
plugs will short the audio output and may cause damage to the unit. You may
use either type of plug for the key jack.
7)
There is no power on-off switch provided. Remember to disconnect the battery or
power supply when use is discontinued.
8)
Use only batteries or a regulated power supply rated at one amp or more, and keep
the voltage between 10.5 and 14.5 volts with 12.5 volts being nominal. Lower
voltages may affect stability, and higher voltages may damage components. Do not
use an unregulated “wall wort” type power supply.
Содержание Acrylic NO-SOLDER 40M Xceiver
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