Antenna Products

CUBE 1:1 Feed Line Choke Balun, 5KW, 1.8-61 MHz, -38dB Common Mode Rejection, Eyebolts/Top Studs Options

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Product Details
Brand: Palomar Engineers
Effective Frequency Range (MHz): 1-61 MHz
PEP Power Rating (watts): 5000
Estimated Insertion Loss (db): .10
Input Connector Type: SO-239 female
Output Connector Connector Type: top studs or side eyebolts
Ground Connector (Y/N): none
Enclosure Size (LxWxH inches): 4 x 4 x 4

5000 Watt rated 1:1 CUBE™ BALUN

* Help keep RF out of the shack.

* Provides maximum transfer of RF to the antenna.

* Suppress radiation from the feeder cable

* Makes the antenna radiation pattern predictable.

* Reduces QRN and TVI to the neighbors.

This higher power BALUN or UNUN utilizes mil-spec coax cable for the windings on a triple core toroid with coax silver shield and silver braid for low loss. The dielectric is Teflon® insulation for high voltage ratings of 1,900 volts. (A typical 5KW signal at 50 ohms impedance will have a voltage of 500 volts at 1:1 SWR). Available wired as a BALUN (CB-1-5000) with wire studs output or as a UNUN (CU-1-5000) with SO-239 input and output connectors. Rated 5KW PEP/1500 Watts AM/RTTY/CW/FT-8 from 1.8-30 Mhz, less at 50 Mhz. Enclosure is 4" x 4" x 2"

If you run RTTY contests at 1500 watts output, this is the balun/unun you need – it won’t burn out at heavy 1500 watt duty cycles like other brands rated at 1500 watts (or more). We use these same chokes in our own RTTY station at full 1500 watts output and they have never failed. We use one at the amplifier output and another at each antenna feed point. Works very well on OCF antennas below the 4:1 balun to keep RF current on the antenna and off the feed line. Built like a tank, works like a charm, and priced under the competition – what more can you ask for? THIS IS OUR MOST POPULAR 1:1 BALUN!

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Palomar antenna products include feed line chokes, feed line to antenna matching transformers, static bleeders and other accessories. Click on the link to connect to the product you need.