On 8/14/2010 8:44 AM, Jeff DePolo wrote: > But if the duplexer is tuned to 50 ohms, and the cable is 50 ohms, varying > the cable length isn't going to change the Z seen by the transmitter. Or > are you suggesting the duplexer is purposely de-tuned from 50 ohms? I use a Network Analyzer to tune duplexers. Although I can usually get an impedance of 50 ohms, many times the L or C reactance is not perfect. Maybe the transmitter is responding more to the reactance mismatch rather than the impedance mismatch.
This area of RF black magic very quickly gets me lost in the ether. 73, Joe, k1ike
