Palstar COMMANDER II Manuel utilisateur

COMMANDER II

2 METER VHF LINEAR AMPLIFIER

—————————————————————

Owner’s Manual

PALSTAR, INC.

Command Technologies Division

9676 N. Looney Road

Piqua, Ohio 45356

U.S.A.

Custo er Service and Sales Telephone: 800-773-7931

Fax: 937-773-8003

E- ail: info@palstar.co

Table of Contents

Introduction 3

Inside View 4

Specifications 5

Unpacking Instructions 6

HV Transfor er Installation 6-8

Safety Warnings and Precautions 9

Front & Rear Layout 10

Installation Preparation 11

Operating Procedure 12

Operating Hints 13

Typical Operating Conditions Table 13

Warranty, Service, and Returns 14

RF Deck Sche atic 15

Control and Bias Board Sche atic 16

High Voltage Power Supply Sche atic 17

INTRODUCTION

The Co ander II is a grounded grid class AB2 linear power a plifier that operates

on the A ateur 2 eter band (144 to 148 MHz).

A single CPI/Ei ac 3CPX800A7 pulse-rated external anode triode with forced air

cooling and odern stripline circuitry ensures efficient and conservative operation.

The 6:1 ratio vernier reduction drives on all tuning controls allow s ooth and easy

tune up, while the front panel input tuning control allows a higher input circuit "Q" for

excellent linearity and to present a low input VSWR to the exciter all across the entire 2

eter band.

An auto atic delay circuit, for proper cathode conditioning before RF drive can be

applied, extends tube life. A 200 oh resistor in the plate supply negative lead protects

the tube in the event of an arc.

The Co ander II features a full co pli ent of control and etering functions for

easy on-air operation.

A dual pri ary power transfor er allows 117VAC, 200VAC or 234VAC operation.

High Voltage

Transfor er

T/R Relay

Board

Cooling

Blower

Load Tuning

Capacitor

Input Tuning

Piston Capacitor

Multi eter

Switch

3CPX800A7

Triode Tube

Fila ent

Transfor er

High Voltage

Interlock

Switch

Control

Board

Multi eter

High Voltage

Board

(underneath)

Commander II Inside Layou

Specifications

Co ander II

2 Meter VHF Linear Power A plifier

• Frequency Range: 144 to 148 MHz.

• Modes: USB, LSB, RTTY, FM, CW.

• Power Require ents: 117/200/234VAC 50/60 Hz.

• RF Drive Power: 10 to 15 Watts no inal; 30 Watts axi u , for full 1 KW (CW) output.

• RF Output: +15db gain; > 650 Watts (USB, LSB); 450 Watts axi u . (FM or RTTY).

• Input I pedance: 50 Oh s unbalanced, front panel adjustable.

• Output I pedance: 50 Oh s no inal.

• Antenna Load (VSWR): 2:1 axi u .

• Har onic Suppression: better than 60db down at rated output.

• Inter odulation Distortion: better than 35 dB down at rated output.

• Weight (with transfor er): 60 lbs. (27.3 Kg).

• Cabinet Size: 14.5'' x 14.5'' x 6'' (36.8c x 36.8 c x 15.2 c ).

• Tube Co pli ent: one 3CPX800A7 cera ic etal triode.

• Cooling: pressurized chassis forced air.

• Antenna Relay: DPDT; .1 dB insertion loss.

• Fuse: Type SFE; 234VAC and 200VAC operation: 15 A p; 117VAC operation: 30 A p.

UNPACKING INSTRUCTIONS

Carefully re ove your Co ander II fro its shipping carton aking sure there is no da -

age evident fro shipping. If there is any da age, notify the delivering shipper i ediately,

fully describing the da age.

Do not destroy the packing aterial, since it ay be reusable later, should you require fac-

tory service, or need to transport the A plifier for any other reason.

TRANSFORMER INSTALLATION

Due to its weight, the power transfor er is shipped separately to prevent da age to the a -

plifier cabinet, and it ust be installed by purchaser.

In order to install the HV transfor er, both the top and botto covers a plifier covers ust

be re oved. The s all plastic bag (shipped with a plifier) contains the transfor er ounting

hardware.

The following photographs illustrate the proper HV transfor er installation:

This is the area the transfor er

ounts in. Pay attention to the

wiring harness (1) at the rear and

be careful not to pinch any of the

wiring under transfor er during

installation. Note that the con-

nector (2) has been oved to the

side, out of the way

Position the HV transfor er with

the wires and connector as

shown.

Lift the HV transfor er and tilt

it as shown in the picture. Gently

lower the transfor er until the

side with the connector is resting

on the a plifier chassis.

Make sure that none of the wir-

ing is pinched under the trans-

for er.

While supporting the raised side of

the transfor er, gently lower it in

place until it, too, is resting on the

chassis. The large opening in the

side of the chassis allows access to

do this.

The transfor er is now in place

and can be fastened to the chassis.

Insert the provided carriage bolts

in fro the top, through the trans-

for er ounting tabs and chassis

slots. Next, slightly lift the chas-

sis and place a flat washer and

KEPS nut on the botto side of

each bolt and tighten.

Caution: before tightening,

be sure that none of the wir-

ing harness is pinched under

the transfor er!

Be sure to read the safety cautions

on the next page before operating!

Plug the connector on the trans-

for er into the one on the wiring

harness. It is keyed so that it

cannot be plugged in backwards.

Make sure that the connector

halves are pressed together until

the lock tabs snap in place.

Dress the wiring down out of the

way, as shown. Re-install the

top and botto covers and the

unit is ready for use.

CAUTIONS:

• DO NOT atte pt any type of service or repair on this a plifier without first re oving the

AC power and allowing AT LEAST 60 MINUTES FOR THE HIGH VOLTAGE CAPACI-

TORS TO BLEED OFF !

• DO NOT operate this a plifier with the top or botto covers re oved. DO NOT operate

this a plifier with the internal RF tube co part ent covers re oved. Never place any ob-

jects into the top ventilation holes. CONTACT WITH VOLTAGES IN THE CABINET

CAN BE FATAL ! CLOSE QUARTERS EXPOSURE TO UNSHIELDED RF AT THESE

POWER LEVELS IS HAZARDOUS TO YOUR HEALTH !

• Never atte pt operation without first connecting an appropriate antenna (2:1 VSWR Max)

or a 50 oh du y load with sufficient rating or SERIOUS DAMAGE TO THE AMPLI-

FIER MAY RESULT.

• Never operate the a plifier with ore drive than required to produce the rated output for

the operating ode used.

• Do not place the Co ander II in repeater operation. This a plifier is not designed for un-

attended service. Extensive odification would be required for this type of service.

• Never operate any a plifier using an extension cord.

• Never cover the top of the a plifier cabinet with books, papers or other equip ent as

OVERHEATING MAY RESULT.

IF ANY SITUATION YOU ARE NOT SURE ABOUT OCCURS,

PLEASE CONTACT MANUFACTURER FOR ASSISTANCE.

Telephone: 800-773-7931

Fax: 937-773-8003

E- ail: info@palstar.co

!! WARNING !!

CONTACT WITH VOLTAGES IN THIS AMPLIFIER CAN BE

!!! FATAL!!!

Ground Lug

Multi eter TUNE Control

Multi-turn Piston Capacitor

Preset at Factory—

do not adjust, see pages 12 & 13

Multi eter

Selector

Switch

LOAD

Control

INPUT

Control

STANDBY/

OPERATE

Switch

ON/OFF

Switch

Power Ready

Light

Voltage Selection

Ju per Cover

RF In RF Out

Operate Enable

Connector

Rear Panel Layou

Fron Panel Layou

Fuse Post Accessory

Power

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