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PALSTAR AT4K

AT-4K

Availability:SOON

1 150,00 € tax incl.

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When you really want to get a lot of power to the antenna, then the Palstar AT-4K is the right tuner. This is the tuner Palstar has become well-known for and it has ever since been continuously improved. The tuner has a max. power rating of 3000 W PEP (2500 W CW) (real loads). The high-quality components are designed for long durability, as both variable capacitors are specified for 6kV, the roller inductor and switch up to max. 10A HF power. The use of three controls in t-matching (2x variable capacitors, 1x roller inductor) makes very precise and fine tuning possible.

Additionally the Palstar AT-4K has a switchable 1:1 balun at the input of the tuner. This way end-fed wire or open wire antennas can be tuned directly. The balun is switched on by a front panel relay. As with all large tuners from Palstar, the AT-4K has a large cross-needle display with backlighting. Switching meter range from 300 to 3000 W provides instant overview of forward and reverse power as well as the resulting SWR. The meter has a 'Peak and Hold' function to read peak values more accurate and easier. Power supply requires 12V, max. 200mA.

The even larger AT-5K is built very similar to its smaller brother AT-4K: a manual tuner with a T network design, with switchable balun for symmetric feeds. The max. power of the AT-5K is 3500 W CW (approx. 4000 W PEP). Due to the large capacitors the impedance range on the 10m band is limited. Operation on 10m is possible, but only with better adapted antennas.

Technical Data Palstar AT-4K / AT-5K Tuner
 AT-4KAT-5K
Max. Power (output)3000 W PEP (2500 CW)4000 W PEP (3500 CW)
Bands160m - 10m160m - 15m, 10m with limited Z range
Tuning2 Capacitors, 1 rolling inductor, T network
Antenna Switch2 antennas, bypass, optional balun
Capacitor2x max. 460pF @6 kV2x max. 600pF @6 kV
Rolling Inductor10 A, 7 kV, silver-plated inductor wheel shaft and contact wheel on ceramic body
Impedance range20 — 1500 Ω 
InstrumentActive cross-needle (Peak/Peak Hold) with backlighting
Instrument Power Range0-300 / 0-3000 Watt
Balun1:1, switchable
OutputUnbalanced/balanced activated by front panel switch
Power supply13.8V DC, 200mA max.
CaseAluminium, hot dip galvanised or powder coated
Dimensions384 mm x 193 mm x 483mm413 mm x 210 mm x 502mm
Weight9,0 kg13,0 kg

 

Included in delivery of Palstar Tuner 'AT-4K' and 'AT-5K'

  • Tuner
  • DC cable
  • Manual English
 

Only the coax cable is needed to connect radio and tuner! No other connections necessary.


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