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Table of Contents
Palstar products are designed by
Hams for Hams carrying on the
Palstar tradition for high-quality
products designed and
manufactured in Ohio, USA.
AT-500 600 Watt
Antenna Tuner
600 W PEP SSB, 500 W CW
l
160 m to 6m
l
Di erential capacitor with 6:1 vernier drive
l
Dual movement cross needle meter
l
5.5" H x 10" W x 11.3" D
l
9676 N. Looney Rd,
Piqua, OH 45356 USA
(937) 773-6255
(800) 773-7931
(937) 773-8003 (Fax)
www.palstar.com
PALSTAR
PALSTAR
AT-500 600 Watt Antenna Tuner
Technical Manual
Designed and Manufactured in the USA
Copyright 2014 Palstar, Inc.
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Table of Contents
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Summary of Contents for Palstar AT-500
- Page 1 PALSTAR Palstar products are designed by Hams for Hams carrying on the Palstar tradition for high-quality products designed and AT-500 600 Watt Antenna Tuner manufactured in Ohio, USA. Technical Manual AT-500 600 Watt Antenna Tuner 600 W PEP SSB, 500 W CW...
- Page 2 R E A R PA N E L C O N N E C T O R S : The AT-500 also measures the power (upgraded to include a S O 2 3 9 : R F I n p u t , C o a x 1 & 2 , B y p a s s PEAK/PEAK HOLD function) and Voltage Standing Wave Ratio (VSWR E N D F E D W I R E : H i g h V o l t a g e N y l o n 6 6 ™...
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Page 3: Installation
D O N O T U S E M O R E T H A N 5 0 0 W a t t s C W ( 6 0 0 W a t t s P E P post and the JUMPER post S S B ) t h r o u g h t h e t u n e r. Page 3 PALSTAR... -
Page 4: Front Panel Description
The end stop readings on the turns 6. DIRECT-TUNED MODE SWITCH Six-position rotary switch selects an counter are ZERO and 288. Zero is maximum inductance and 288 is output connector as follows: minimum inductance. Page 4 PALSTAR... - Page 5 PALSTAR AT-500 SCHEMATIC RF Directional 360pF-14pF-360pF Coupler Variable Capacitor Peak/Peak Hold Meter Board Roller Inductor Crossneedle SWR Meter Roller Inductor © COPYRIGHT PALSTAR 2011-2014 Page 5...
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Page 6: Inside View
METER BOARD ADJUSTMENTS INSIDE VIEW DIFFERENTIAL COUPLER CAPACITOR Reverse Reverse Forward Forward High High Peak Peak Peak Power Peak On/O Hold Range High METERING PEAK/HOLD ASSEMBLY Page 6 PALSTAR... - Page 7 OPERATING YOUR AT-500 OPERATING YOUR AT-500 B E F O R E O P E R AT I N G D O N O T E X C E E D 5 0 0 W AT T S A V E R A G E 5 .
- Page 8 , t h i s w i l l c o n t a m i n a t e t h e w i n d i n g s . Page 8 PALSTAR...
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