KB6HRT again,
The longer I tested, things changed some I think now its about the same on receive as the dipole cut for 40m voice, the DB is more broad banded than the dipole. Stations I test with claim the DB has higher incoming reading when on it, could be orientation. SWR on the DB I could get FLAT 1 to 0 my dipole 1.2 SWR. I used NR 14 stranded THHN for the dipole and RG11 for the DB. both stand up well in the AZ, Sun so no problem eather antenna. Am through testing an have taken the DB down, put up a ZS6BKW that uses 300 ohm LL an NR14 THWN stranded wire, it give me 75m with under 3 SWR 40m under 2 SWR 20m under 1.5 SWR 17m under 2.5 SWR 12m under 1.5 SWR and about the same on the lower part of 10m before using a tuner. The ZS6BKW is close to the 40m dipole when I use a tuner on receive. Getting a little HOT in the summer for me to be up on the roof in July, Aug, Sept and Oct for me to be fooling around with my antennas............73s..........kb6hrt
Your results make sense.
The Double Bazooka is only very SLIGHTLY more lossy than a dipole. The SMALL additional loss is caused by several things:
1.) The "stubs" add a high but finite parallel resistance across the feedpoint. Because the resistance is many thousands of ohms for typical coax, the added loss is very low.
2.) Braiding carries the current, and many cable have the thinker smoother conductor on the INSIDE wall where high current flows. When you use the cable as an antenna, the current will be on the outside layer and that is where the thin braid might be. That can increase loss slightly.
3.) The antenna is coated with a dielectric, and that can add a very tiny bit more loss.
People blow this up way out of proportion. They take small additional losses and get all "old woman dramatic". In a typical case there is far less than 1 dB difference. Most differences people think they see or measure are from other errors.
The stub effect does not compensate SWR as much as articles claim. MOST of the additional BW does not come from loss, as some people claim. The vast majority of additional BW comes from the antenna being thicker, not from losses, and not from the stub effect.
The real truth is the double bazooka, with some limited special exceptions caused by exceptional material choices, acts just like any other dipole. It will not be a dummy load, it will not be magical. It is and pretty much acts like any other fat dipole
of the same thickness and length.
This is why you had a tough time resolving differences.
