Joe W4AAB said; Wouldn't the old Johnson kW Matchbox work OK?
Reply From Jim WD5JKO, My experience with a FW 80M loop at 18' high is that at resonance it looks like about 80 ohms resistive. My Viking 275 Matchbox cannot match to that low of an impedance on 80M. If the loop were not resonant, and you played with the feeder length along with the antenna length, then the Johnson Matchbox might tune it in. In my case 75 ohm coax with a sleeve bead balun would be the ideal feeder. Instead I use 50 ohm coax and a home made unbalanced tuner in the shack, and a 1:1 current balun outside feeding 400 ohm open wire line to the FW loop. Works. Jim JKO -- No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.1.405 / Virus Database: 268.11.2/422 - Release Date: 8/17/2006
