Tube Feed Line Chokes

20-6 Meter Loop Antenna System with 4:1 Balun and Choke Combo, (20, 17, 15, 12, 11, 10, 6 meters) 500/1.5KW/5KW PEP Options

SKU PAL-LOOP2006-500
$149.95
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20-6 Meter Loop Antenna System with 4:1 Balun and Choke Combo, (20, 17, 15, 12, 11, 10, 6 meters) 500/1.5KW/5KW PEP Options
Product Details
MPN: PAL2010LOOP-500, -1500, -5000
Country/Region of Manufacture: USA
Input ohms/Output ohms: 50 in/200 out
Frequency Range < 2:1 SWR (MHz): 1.8-61MHz
PEP Power Rating (watts): 500/1.5KW/5KW
Input Connector: SO-239
Output Connector(s): Eyebolts/Wing Nut
Hardware Type: Stainless Steel
Enclosure Size: 4"x4"x 2"(1.5KW), 4"x 4" x 4"(5KW)
Weight (pounds): 3#(500)/4#(1.5KW)/5#(5KW)

20-6 Meter Loop antenna (72' wire) + 500/1500/5000 Watt PEP rated 4:1 Current Balun + internal 1:1 Current Balun in one enclosure + 4 insulators for support

* Complete package - just add coax

* works multiple bands with ease

* can be configured as delta, square, rectangle or multi-sided horizontal loop (4 insulators included)

* Choice of 500, 1.5KW or 5KW PEP rated HYBRID baluns to suit power needs

* No need for extra feed line choke as it is built into the 4:1 balun enclosure

After many requests we have created a compact, special balun for OCF and loop (Skyloop or Delta loop) antennas. The CB-4-1-1500/5000 is a CUBE enclosure containing a multi-core, broadband 4:1 impedance transformer in series with a 1:1 current balun for extra common mode current choking to keep RF current off the outside of the coax braid and on the antenna where it belongs. The extra choking action also means that the coax feed line will not act as a radiator causing unnecessary RF interference (RFI).

1.5KW Rated for full 1500 watts PEP and 1000 watts CW/FT8 (ICAS). 1.8Mhz – 61 MHz.

5KW Rated for full 5000 watts PEP and 1500 watts CW/FT8 (ICAS). 1.8Mhz – 61 MHz.

500 watt version is in "BULLET" format, 1.5KW is a 4 x 4 x 2 cube and 5KW is in 4" x 4" x 4" enclosure.

TUBE feed line chokes/Line Isolators are used to suppress common mode current carried on the outside of the  coax braid which is often responsible for receiver noise and RFI in the receiver/transmitter. These chokes are very useful for suppressing RFI common mode current at the antenna feed point, at 1/4 wavelength intervals along the coax feed line and also at the entrance to the radio station.  They are available with various input and output connectors so as to conveniently connect to standard output connectors already installed on your feed line.

Palomar Engineers TUBE feed line chokes are designed to have 2-5 times more choking impedance over a broader frequency range than competitor units in similar packaging.  Each choke has the choking impedance and effective frequency range on the product label so you can choose the product best suited for your application.