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 built a system many years
Any matching network would be *very* sensitive to the length of the inverted L and ground quality. In all probability it will need to be "cut and try" for your specific antenna. 73, ... Joe, W4TV On
Try and obtain either a CIA or VNA and sweep complex Z between the frequency extremes on both bands. Next, you can use TLW software and find combinations of C and L for several common tuners. Once yo
Any matching network would be *very* sensitive to the length of the inverted L and ground quality. In all probability it will need to be "cut and try" for your specific antenna. A high power autotune
A surplus Harris or Collins auto-coupler would also work well when feeding an Inverted L. Paul, W9AC Sent from my iPhone5 _______________________________________________ _____________________________
You can match both 160 and 80 with a single modified L-Network. It would have three components rather than just two. There would be no switching required moving from 160 to 80. But, youd likely need
You might get lucky and be able to bring SWR on the high end of the bands down to a reasonable value just by tapping down on the antenna end of the coil (reducing the L). It will not be "perfect" bu
Author: TexasRF--- via TowerTalk <towertalk@contesting.com>
Date: Sun, 14 Sep 2014 18:36:51 -0400
Conceptually this could be done using 50 ohm coax stub matching. Starting with the R +j of the four band segments, a design for each band series segment can be done. Then starting with the shortest s
But, youd likely need TWO of these networks one for the bottom end of the bands and one for the top end of the bands. With remote switching to flip between them. Theoretically, one can design a netwo
Starting with the R +j of the four band segments, a design for each band series segment can be done. Then starting with the shortest series section, additional series cables can be added to achieve t
Author: Herbert Schoenbohm <herbert.schoenbohm@gmail.com>
Date: Sun, 14 Sep 2014 20:32:40 -0400
Question: Would it not be easier to just have two extra wires cut for for the low end and the other for the high end of each band and feed them from a common feed point with minimal matching componen