One Each K&l Tunable Bandpass Filter 30~76mhz

US $195.00

  • Anchorage, Alaska, United States
  • Jan 29th
One each manual tunable bandpass filter made by K&L, model X4BT-30/75-2B. Tuning range 30~76MHz, Zin/out 75 Ohm. BNC-type female connectors, Max. CW Power rated-50 W. In excellent electrical, mechanical and physical condition, only used for receiver power levels. Unit will be removed from the 19 inch rack mounted enclosure shown in the photograph for shipping, the rack shown with cables and splitters will not be included. Notes regarding the use of 75 ohm device on 50 ohm system: The voltage reflection off of a 75 ohm input is ? = (50-75)/(50+75)= 0.2   ....So the voltage transmission into a 75 ohm input is T = 1 - (0.2?) = 0.96 ...In dB's, that means a loss of 20 Log (0.96) = 0.35 dB of power due to the mismatch.  It would probably be hard to find a broadband transformer for a 50:75 ohm match that had less than 0.4 dB of loss!
Condition:
Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. ...
Brand K&L
Country/Region of Manufacture United States
Model K&L

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