DCI-145-2H 2m Filter.

I recently swapped an unwanted Daiwa VSWR meter for a DCI-145-2H 4 pole bandpass filter for 2 metres.   I don't really need it however I have on the odd occasion thought it might help with some strong out of band signals that occasionally pop up so swapping an unwanted piece of equipment for a piece that might be useful I thought was a good deal.

DCI quote the following specification.

Centre Frequency : 145MHz
Band Width : 2MHz
SWR : < 1.3:1
Return Loss : >18dB

DCI measure the filter response at the following intervals.

135 MHz : -72.650 dB
140 MHz : -46.450 dB
145 MHz : -0.755   dB
150 MHz : -42.981 dB
155 MHz : -65.548 dB

Out of pure interest I thought I see what I measured the above as using the DG8SAQ VNWA.

Filter response etc measured with the VNWA.

As you can see the filter specifications for SWR, RL as described the only difference is with the filter skirt readings being slightly off but in quite good agreement with DCI which I'll assume used a slightly better VNA than the one I have. ;-)