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CF5KV 5KW Hi-Q Common Mode Filter

4.3 (2) Write Review
Free shipping on orders over $29.99

$209.95

$ 99 .00 $99.00

In Stock
  • 5KW power rating, 50ohms impedance, 1.8-54MHz operating frequency
  • 60dB common mode attenuation
  • Prevents a feed-line transmission and improves S/N at receiving
  • SO-239 connectors to accept coax cables with PL-259 connecotrs
  • Made in Japan.


What is common-mode? Interfering signals can flow in cables in two ways: Differential-mode currents and common-mode currents. Differential-mode is the mode used by the desired signal on a transmission line. The cure for the differential-mode interference as in a spurious noise is a low-pass filter. Common-mode currents exist just like differential- mode currents. Worse yet, common-mode noise causes the same problems as in differential-mode noise. You cannot tell the cause, whether it is the differential or common- mode offense by looking at the symptoms. And therefore, common-mode filtering is an essential measure. The cure for the common-mode noise is a common-mode filter; it also prevents a feed-line transmission and reduces noises generated by nearby devices at receiving. The HI-Q COMMON-MODE Filter Series CF250E and CF5K were introduced in 1988. Tens of thousands of these HI-Q COMMON-MODE Filter Series are in use today worldwide.


Rolf Inge
Reviewed in the United States on July 4, 2018
For touble with RF-signals from the coax-cabel for the antenna. This delivery was abt 1000 NOK (Norwegians crowns) more exspensiv than the norwegian price on net!!!!!
charles matthews
Reviewed in the United States on December 10, 2016
It works as intended