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The CV6132 (commercially the BS440) is an X-Band TR-Cell with an operating frequency range of 8.5 - 9.1 GHz.

The TR-Cell is essentially a change-over relay for radar systems. The power of the transmit pulse on the gas filling that is held just below ionisation by the primer voltage causes the gas to ionise and short circuit the output port. Once ionised it blocks the transmit pulse from reaching the sensitive front-end of the receiver.

The KB/QG identifies this valve as being made to specification K1001 or K1006, the B denotes qualification by a UK authority and the QG identifies the maker as English Electric Valve Co., factory not yet identified.

The TR-Cell fits into waveguide 16 and is sealed as there is low pressure gas within. Impedance matching is achieved by the reduced waveguide window size.

The envelope width is 40 mm flange to flange.

Reference: Data-sheet.

Absolute Maximum Operating Conditions^¶

Thanks to Frank Philipse for supplying the above PDF datasheet.