Can be use between transceiver and amplifier or directly under the center of dipole. Only 19 inch long, waterproof and enclosed in CPVC tube to protect ferrite to be broken, made to be inserted in new or existing antenna with SO-239 (Fem) silver plated connector and PL-259 (male).
Take note , only the current choke in this sale, center insulator show as example only. Elimination of radiation from the feeder cable. Makes the antenna radiation pattern predictable. Dramatically reduces QRM, TVI to neighbors.Helps to keep RF out of the shack. Frequency: 1.8 - 50 MHz.
Insertion loss: less than 0.2 dB at 50 MHz. The item "RF Line Isolator, Current Balun, HF Choke, 3 Kw, 5050 Ohms, RG142 Coax" is in sale since Friday, January 30, 2015. This item is in the category "Consumer Electronics\Radio Communication\Antennas\Ham, Amateur Radio Antennas". The seller is "crb5000" and is located in Rawdon, Quebec. This item can be shipped worldwide.