LARGE: SIZED HEAT SINK ‘Largehearted. sized: extruded: aluminum. heat sink:provides excellent heat dissipation. to maintain stabilized output daring dong periods of operation. APC CIRCUIT Her the antenna circuit iv open or shorted: or whist ‘the SWR is extremely high, the APC clutter works 1o inactivate the near-amplifier to protract the final stage transistor.
STAGNATION {1 FRONT. SIDE REAR: SIDE Front Pearl e Fixing Plate Prows: Output Jack Power indicator LED for a Transceiver: = Power Output Jack for a Linear: Amplifier. Heat Sink of Power Supply: Regulator: AC Power Cord Fuse Holder: Fixing Screw of Power Supply *Removal the protective sheet attached to the front panel before use.
HOW TO USE THE Ci-3PS WHEN 'USED A5 A TRANSCEIVER STAND {1570 ATTACH THE TRANSCEIVER TO: THE RIGHT SIDE Pull our e rack on'the right side of tha 1G:3PS to-its Tl span and place the transceiver in between the rack: and: the (C-3P5! TO ATTACH THE TRANSCEIVER TO THE LEFT SIDE Detach the rack by loosening the two screws holding the rec holder-and transfer the rack and holder. 1o the left side.
AXING THE ' TRANSCEIVER TO 'THE 1-398 A rubber base 1§ provided 1o prevent the: transceiver from: sliding back and forth when attached 16 the. 1C:3P8.1 Fix the transceiver, as:shown in the following drawing, with its recess on the bettor fitted anti the: convex of the rubber base and the recess of the base fitted to the rack. Rack: Hither Axing Bags WHEN USED:AS AN EXTERNAL SPEAKER Since the 'speaker of the transceiver s on the side plate] dse the eternal speaker of the 1C-3P8.
g WHEN USED :AS AN: AC POWER: SOURCE Connecting the power output jack of the JC:3PS 1o the external power jack of the transceiver with the accessory: power connector cord, after turning OFF the respective Power switch and Function switch CAUTION: The accessories: of the 1C-20L include a: post transactor word: (3P JPL ‘When Vol want 1o use the 1-3PSn combination with the 102028 transceiver, use this power connector cord.
FOR 1-402 Org: HOW . TO: USE THE: LINEAR AMPLIFIER g After mounting the Near amplifier; connect a microphone or Key 'to ' the transceiver.: Then st the power switches of the [0-RPS unit and transceiver 1o the OF F position and: the AMP switch of the Linear amplifier 10 the DIRECT HOE ) position. Plug the AC power cord inch s AC outlet and turn ON: the power switch: This will tight the power indicator: LED. of the 1C-3PS. Now your transceiver: set s ready 10 use.
1 the AMP switch is placed in‘the AMP:position with the transitiveness receive, the AMP indicator LED will fight showing that the linear amplifier 1s powered. In the reductive mode, the antenna § connected destitute to the transceiver. 1§ 4he Transceiver Is switched 16 transmit) the SEND {TRANSMIT indicator LED will Eight indicating that the linear. amplifier 16 also switched ¥o transmit Hn this Case; an amplified output of 10 Watts IS applied to the antenna.
She F e However, with the 1C-BOL and the 10201, set the AMP wirehair ta the DIRECT position and then check the arena and fear and remove iy trouble: bafflers continuing operation. Initiate 10301, the:switch may insensate in the AMP position while'checking for trouble before ‘continuing cps ration. I vou cornet 3 receive preamble to the amplifier, ong that depends on: a 'carver for T/R switching, the ARG may work tus te ¢ time 1ag Caused by T/R switching.
THEORY OF OPERATION IC-50L, 1C-20L POWER AMPLIFIER CIRCUIT The 3 Watt input from the transceiver 18 fod 1o the base of Q1 through relay RLZ, and after being amplified.
i R APC CIRCUIT I the amplifier, the: SWR detector, incorporated tn: the antenna licit, abducts: deflected waves When 5 mismatch occurs, the detected RF is rectified by D3, and the DC voltage is fed to the base of OB.and keeps Q8 and 08 ON.:. This switches: OFF. Q4 through Descend returns relay KL 1o DIRECT, 1o protect Q1. At the same time, the APC indicator LED s lit.
