Pic shows three full spirals spaced about evenly. Other end of tube was the same only neater. Ideally spirals would be even, but I took this after the run and when things cooled back down they sagged a bit. Tube wrap tests - One full spiral ending in a loop. One of Jim Bare's recommendations from the manual.
Equipment is same as in pic just above except for the wrapping.
This ran well, very comparable to three spirals but slightly different in where SWR was lowest in terms of frequency. Given past experience these will slowly go away in future runs as electrodes absorb impurities. Tube wrap tests - No spirals, one loop. Experimenting with minimal wrapping after reading of some others on the list. Equipment is same as in just previous pics, in fact these pics and runs were made one after another after another to ensure conditions would be thes same for comparison purposes.