Tube Feed Line Chokes

1448192141 - Tube Feed Line Chokes
+2

50:50 (1:1) CUBE™ Unun, 1.8-61 MHz, 1.5KW, Ladder Line or Balanced Antennas to Remote Antenna Tuner

Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/Ladder Line to coax transformers
SKU CU-1-1500DS
$109.95
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100 items$84.9523% off
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50:50 (1:1) CUBE™ Unun, 1.8-61 MHz, 1.5KW, Ladder Line or Balanced Antennas to Remote Antenna Tuner
Store/Antenna Products/CUBE Impedance Transformers (<1:1, 1:1, >1:1)/Ladder Line to coax transformers
Product Details
MPN: CB-1-1500TS
Input ohms/Output ohms: 50 ohms in, 50 - 150 ouhms output
Frequency Range < 2:1 SWR (MHz): 1.8-61 MHz
PEP Power Rating (watts): 1500
Enclosure Size: 4 x 4 x 4
Antenna Compatability: G5RV/ZS6BKW/Dipole

The CB-1-1500DS Antenna Antenna Tuner Balun is a 50 ohm to 50 ohm, multi-core feed line choke designed to provide high choking impedance between a balanced ladder line feed line antennas (zepp, G5RV, extended double zepp, etc.) or single ended antennas like 1/4 wave verticals and a remote antenna tuner (including an automatic antenna tuner with only a single output and ground, like SGC-230, Icom AH-4, etc) short 50 ohm coax feed line (to antenna tuner) at a power of 1500 watts PEP from 1.8 to 61 MHz.

The input and output connectors are double studs marked +/-.

The CB-1-1500DS is configured as a Guanilla transmission line transformer with balanced outputs (current balun configuration). It is best used when ladder line impedance seen at the end of the ladder line to balun connection is close to 50-150 ohms. Enclosure box is 4″ x 4″ x 2″. Typical choking impedance range is 1K-10K ohms from 1-61 MHz.


Typical ZS6BKW multi-band antenna with CB-1-1500 or CB-1-5000

ZS6BKW at AK6R png - Tube Feed Line Chokes

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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.