AMERITRON AL-572 Manual de Instruções

AMERITRON AL-811HDINSTRUCTION MANUAL116 Willow RoadStarkville, MS 39759 USA662-323-8211Version 6Printed in U.S.A.HF POWERLINEAR AMPLIFIERPLEASE READ T

9 AL-811HD SCHEMATIC Power supply shown wired for 120V operation * .F1F2INTERLOCKS2OFFONR12D17C19D18C28C27C1R14R13ALCJ4C37L1S1AC4C3RELAYJ3RF INJ2C7RF

10 AL-811HD INPUT CHART BAND C3 (pF) L1 C4 (pF) 160 28.75T (405-1287) 1300 (250-1130E) 80 100 (250-0100) 23.75T (405-1237) 500 (250-0500) 40

11 PARTS LIST (ctd.) Designation Description Ameritron Part # Q1 2N3904 TRANS 305-3904 Q2 MJF3055 TRANS 305-3055J R1 4.7k Ohm, 1/2 Watt 101-3470

-+765++Fb3C501R506C507C503R505D503R511C506C508R503R510Ic501Q505D502RLY501C504C505Fb1Fb22341R/WHTO STBY SWTO ANT RELAYWWWTO CPID SENSEBLUE/WHFROM 12VOV

DISCLAIMERInformation in this manual is designed for user purposes only and is not intended tosupersede information contained in customer regulat

PLEASE READ THIS MANUAL BEFORE ATTEMPTING TO OPERATE EQUIPMENT!! UNPACKING INSTRUCTIONS 1. Carefully lift the amplifier by the bottom cabinet edge

2 AL-811HD LINEAR AMPLIFIER FEATURES The AL-811HD is a grounded grid linear amplifier developed by Ameritron using low cost 572B power triodes. It op

3 GENERAL INFORMATION SAFETY INTERLOCK The interlock switch stays closed to allow AC line voltage to reach the power transformer as long as the AL-811

4 METERING FUNCTIONS The AL-811HD has two illuminated panel meters. The right meter reads PA grid current up to 200mA. The normal current with a sin

5 INTERCONNECTIONS 1. Connect the RF output of the transmitter or transceiver to the RF IN connector on the rear of the AL-811HD with 50 ohm coax. U

6 TUNE-UP CW PROCEDURE Follow the instructions in numerical order. If the various meter readings are different than those indicated in the instruct

7 OPERATION OF OTHER MODES SSB: Tune up the exciter and amplifier as described in TUNE UP section and switch the exciter to SSB. Normal ranges of met

8 PERIODIC MAINTENANCE The high voltage present on the plate choke and air variable capacitors attract dust and dirt out of the air stream. It is par