MFJ VEC-814 Vectronics 2m Intermod Filter (SO-239)

VEC-814 Vectronics 2m Intermod Filter (SO-239)
* 144 - 148MHz bandpass filter
* Up to 50dB rejection
* Defaults to straight through when off
* Requires at least 50mW for auto sensing
* For mobiles
* Termination SO-239
* Size 70 x 50 x 45mm approx.
* Power: External 12V DC supply

A three section high-Q bandpass filter for 2m mobiles. RF sensing bypasses it on transmit.
Power is from an external 12V DC supply (not supplied).
The unit will dramatically reduce interference caused by out of band transmissions by up to 50dB.
Max handling power is 50W.
When switched on there is a 6dB insertion loss, but this is probably acceptable compared with the improvement gained.