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4.1 Connect your TCVR to the Linear using a short, 50 Ohm coaxial cable.
4.2 Connect your TCVR ground giving socket to the PTT RCA socket on the rear panel of the
Linear, using a screened cable.
In case your TCVR has an open collector PA controller output, you can use it without
difficulties. This RCA give 15V DC, 10mA. (24V 10mA on case ME1200-H)
4.3 Connect your aerial to the OUT connector of the Linear. VSWR must be better than 1:2.
4.4 Using a flexible cable at least 6mm
grounding point of the transceiver.
4.5 Connect the power cord to the mains and switch on the equipment. The ON led glows and the
WAIT led start blinking for a period of > 120 sec, during the heating period.
The readiness of the Linear is indicated by the OPR LED. If the PA was out of use for a longer
period (2- 3 month), it would be advisable to keep the PA heated without driving for a few
hours.
4.6 When the OPR LED is light push on the OPR switch. The PA is ready to work.
4.7 Using the tuning mode of the TCVR (CW) give driving power to reach 200-400 mA indication on
the Ip bargraph. Tune for maximal output power with TUNE knob. Increase the driving power
until maximum
indicate the reflected power on RFL LED bargraph.
REMEMBER THIS AMPLIFIER DOES NOT REQUIRE MUCH DRIVE POWER. SO START WITH
LOW DRIVE POWER, AND THEN TUNE TO RESONANCE AS OUTLINED ABOVE. OTHERWISE,
ARCING MAY OCCUR INSIDE YOUR AMPLIFIER.
NEVER RUN YOUR AMPLIFIER FOR ANY SUSTAINED PERIOD WITH A SCREEN CURRENT
READING GREATER THAN SPECIFIED. IF YOU DO, POSSIBLE DAMAGE AND FAILURE OF THE
TUBE(S) WILL RESULT, AND THEY WILL NOT BE COVERED BY WARRANTY!
4.8 Check the grid 1 current . Reduce the driving power or make fine tuning in case the grid current
would exceed THE SPECIFIED VALUE!
4.9 During SSB transmission the peak power of the TCVR may exceed the allowed maximum
driving power of the transceiver! Use The POWER knob on the TCVR in this case.
4.0 INSTALLATION
, connect your PA to a suitable grounding point and to the
2
anode current, than carry out fine tuning using the TUNE knob. You can
9
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