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4.1 Connect your TCVR's to the Linear using a short, 50 Ohm coaxial cables.(different 4 and 6m
different inputs, 6m in middle position.
4.2 Connect your TCVR ground giving socket or better foot-switch 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. The input of the PA PTT is low voltage low current input.
4.3 Connect your aerial to the OUT socket of the Linear.(6m ant if you working on 6m, 4m if you
choose the 4m band operation. VSWR must be better than 1:2 on both bands.
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 abt. 180 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.Don't forget
choose the wanted band with the 4/6m bandswitch!
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 Plate and Load knobs. (position: Plate "
", Load "
" on case 50.1 MHz and 50 Ohm antenna, set about to the knob position
"
" plate, and "
on case full drv input.
4.8 "
Increase the driving power until maximum anode current, than carry out fine tuning using
knobs. You can 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.
4.9 Check the grid current. Reduce the driving power or make fine tuning in case the grid current
would exceed THE SPECIFIED VALUE!
4.10
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
2
, connect your PA to a suitable grounding point and to the
" position load on case 4m band. Tune fine to max output with the knobs
9
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