Tube Feed Line Chokes

Termination Resistor, 500 Ohm Non-Inductive for T2FD, BBTD, Rhombic, 1-61 MHz, 600 Watts

SKU TR-500-600
$99.95
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Termination Resistor, 500 Ohm Non-Inductive for T2FD, BBTD, Rhombic, 1-61 MHz, 600 Watts
Product Details

Broadband, Non-Inductive Termination Resistor load used on many terminated antenna types such as T2FD, Broadband Terminated Dipole (BBTD), Rhombics and others

Resistive Value: 500 ohms (+/- 10%)

SSB (25% duty cycle) rating in Watts: 600

CW/FT8 (50% duty cycle) in watts: 400

Length (tip to tip) Inches: 14"

Width inches: 3"

Inductance < 20 nH (1-61 MHz)


Internal Resistance Wattage: 200 watts

If you need more power rating, consider putting two TR-1000-600 resistors in parallel for a total of 1200 watts at 500 ohms.

Many designs for BBTD antennas using termination resistors at HFLINK.COM

Excellent BBTD Install info by K1FU

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.