QRO Technologies HF-3KDX, Инструкция по эксплуатации

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Place your transceiver in the CW mode or any mode that will provide a continuous carrier for tune-
up.
At this time make sure that your transceivers output power level has been set to zero.
TUNE UP PROCEDURE
Before making any tune up procedures, make sure your amplifier is connected to an
appropriate load capable of handing at least 1,500 watts of power. Failure to do so may
result is serious damage to your amplifier.
When the three minute warm-up cycle has been completed, the red power light will turn on. The
amplifier is now ready for tune up. At this point, place your transceiver in the SSB mode with the
microphone gain at zero. Put the amplifier's Operate/Standby switch in the operate position. Key
your transceiver and you should notice the green transmit LED on the amplifier lite. You should
also hear the amplifier's internal relays latch. With the transceiver keyed and the amplifier's Multi-
meter switch in the PC position, observe the plate current (PC).
It should be in the
neighborhood of .200 amperes more or less . Un-key your transceiver, and place the amplifier
in the standby mode.
TUNEUP OBJECTIVE: The objective of the tune-up procedure is to bring the amplifier to
resonance by adjusting the tune & load controls desired maximum output power.
1. Place your transceiver in CW mode, and set its output power level to 60 watts.
2.
Select your desired band using the amplifier’s bandswitch.
3. Put the Multi-meter switch in the PC position.
4. Place the amplifier in the operate position.
5. Set the Tune Control to 0.
6. Set the Load Control to 50 for 160 thru 40 meters. Set the Load Control to 30 for 20 thru
10 meters.
7. Key your transceiver and advance the Tune Control clockwise looking for a dip in the plate
current. Note: If the amplifier faults rotate the load control counterclockwise, and reset the Fault
Switch. If the amplifier still faults, turn to load control counterclockwise some more.
8. Continue advancing the Tune Control clockwise until the dip in plate current reverses and starts
to rise.
9. Adjust the Loading Control for maximum output power.
10. Redip the plate current using the Tune Control and readjust for maximum power using the
Load Control. Repeat this step as needed.
The amplifier should now be tuned for maximum output power with 60 watts of input power. If you
desire lower or higher output power decrease or increase input power and retune for maximum
desired output power.