I am an officer of a local radio club. We have had a number of monoband bandpass filters donated over the years that we would like to use for Field Day, etc. The question is: How do we determine that
The best way is to sweep them with a signal generator connected to one port and a voltmeter (or some other calibrated RX) connected to the other port. You can do this with anything from a manual gene
Yes. Thanks Jim _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/lis
Another simple test I used years ago before I had HP instrumentation was to transmit through them at 50W or so into a 50 ohm dummy load and measure the SWR over the width of the band. SWR higher than
Can't you also hook up a filter and listen on another radio to see if it cuts down the interference? 73 Tom W7WHY Another simple test I used years ago before I had HP instrumentation was to transmit
You could do that, but it wouldn't tell you whether the filter was in good condition, that it could handle power, that it was well-tuned. 73, Jim K9YC _______________________________________________
My club uses some home brew bandpass filters for FD. I usually check them for low SWR every few years. Hook between transmitter (with SWR meter) and a dummy load. Transmit on lower and upper edges of