On 9/22/2014 9:48 AM, Gary Marks wrote:
I have an Inverted-L antenna for 80M & 160M and would like to make or buy a remote matching system that would work on both ends of both bands that would accept full power.
I have a 90 foot top loaded vertical on 160 meter that is resonant on 1830 with just the top loading wires. If I measure the impedance of it on 80 meters, it is somewhere around 1000 ohms and resonant somewhere in the 80 meter band. It would be possible to build a dedicated match for each band and then switch between them. The component values are so vastly different that you need separate networks. What I actually do is have a relay at the 60 foot point in the vertical that disconnects the top 30 feet of the antenna for 80 meters. MUCH simpler than matching to ~1000 ohms. Rick N6RK _________________ Topband Reflector Archives - http://www.contesting.com/_topband
