Note
The Palstar AT1KP is an American-made antenna tuner designed as a differential-T impedance matching network. It is capable of handling power up to 1200 watts PEP SSB and 800 watts CW across a frequency range of 1.8 to 54 MHz (160 to 6 meters).
Features
– Tuning Network: Features a dual-stator differential variable capacitor (408−14−408 pF, 4.5 kV) and a 15 μH roller inductor with a silver-plated bar/wheel on a steatite ceramic core.
– 160 Meter Function: Includes a 10 μH fixed toroid inductance that is switched into the circuit via a front-panel relay specifically for the 160-meter band.
– Metering: Uses a dual-movement cross-needle power and SWR meter that displays forward and reflected power simultaneously. It supports Peak and Peak Hold functions for accurate monitoring.
– Impedance Range: Matches loads from 20 to 1500 Ω (assuming resistive load), though power should be reduced for lower impedance ranges.
Specifications
– Frequency Coverage 1.8 — 54 MHz
– Power Maximum 1200 W PEP SSB; 800 W CW
– Impedance Range 20 to 1500 Ω 160 m to 6 m (assuming resistive
load) Reduce power for lower Z range
– Balanced Output 4:1 current balun
– Input Tuning: Dual-stator differential capacitor (408 - 14 - 408) pF,
4.5 kV) with 6:1 precision vernier drive
– Inductance 15 μH roller inductor; 12 ga. wire wound on steatite ceramic core, silver plated bar/wheel. 10 μH fixed toroid inductance, #14 Teflon wire switched in and out of circuit by front panel switch controlled relay
– Antenna Selector Switch 6 position:
Coax 1 tuned and tuner bypass
Coax 2 tuned and tuner bypass
Bypass and balanced antenna
– Power Range Switch 2 position 300 W /3000 W
Power Requirements: 12 VDC at 200 ma
