Palstar incorporated 9676 n. Looney rd., piqua, oh 45356 usa customer service and sales telephone: 1-800-773-7931 fax: 1-937-773-8003 email: info@palstar.Com ver 1.5 2008_04 © copyright 2008 palstar inc. Printed in the u.S.A. At4k 2500 watt antenna tuner owner’s manual.
1-800-773- 7931 w w w .Palst ar.Co m 2 important safeguards warning: to prevent fire or electrical shock do not expose to rain or moisture 1. Read instructions—all the safety and operating instructions should be read before the appliance is operated. 2. Retain instructions—the safety and operating i...
18 meter board adjustments 1-800-773- 7931 w w w .Palst ar.Co m note: these adjustments control the calibration and accuracy of the at4k metering. Do not adjust unless you are sure the metering is inaccurate, and you have accurate test equipment to check against. Reverse reverse forward forward low ...
4 table of contents 1-800-773- 7931 w w w .Palst ar.Co m important safeguards 2 table of contents 4 general description 5 installation 6 unpacking 6 location 6 installation procedures 6 rear panel connections 7 front panel description 8 at4k schematic 10 operating your at4k 12 before operating 12 tu...
16 operating your at4k 1-800-773- 7931 w w w .Palst ar.Co m troubleshooting if you hear a spitting sound while tuning your at4k at high power, you are probably tuning into an imp- edance that is on the low side (20Ω – 40Ω). In this event, either reduce transmit- ter/amplifier power to a lower settin...
Warning: balanced antennas will produce high rf voltages at the output post connectors. Rf burns may result if touched during transmission. 6 installation 1-800-773- 7931 w w w .Palst ar.Co m unpacking carefully remove the at4k from the shipping carton and inspect it for signs of damage. If any dama...
14 operating your at4k 1-800-773- 7931 w w w .Palst ar.Co m operating notes: 1. An swr of 1:1 is best, but an swr as high as 2:1 may be acceptable. Check your transmitter/amplifier manual for de- tails. 2. If you cannot get an acceptable swr, lengthen or shorten your antenna and/or feedlines and ret...
8 front panel description 1-800-773- 7931 w w w .Palst ar.Co m 1. Power/swr meter dual needle meter displays for- ward and reflected power in watts. Swr is measured where the two needles intersect on the red scale. 2. Direct/tuned mode switch six-position rotary switch selects an output coaxial conn...
12 operating your at4k 1-800-773- 7931 w w w .Palst ar.Co m caution — before operating 1. To avoid possible damage to the at4k set input, out- put, and inductor controls as outlined in the chart be- fore applying transmitter power. 2. Begin tuning with your transmitter/amp into the tuner set at a lo...
10 at4k schematic 1-800-773- 7931 w w w .Palst ar.Co m at4k schematic 11.
