Perform very rough tuneup on the antenna. Measure R value at base of the antenna. Add radials, and remeasure the R value. If R value makes no major change from the previous reading exit to step 8, else goto 6. Define the operating frequency for each band. Measure actual two to one SWR bandwidth for each band.
Radials for Hustler 6BTV multiband trap vertical? | QRZ Forums
These antennas perform well in restricted space areas. For peak performance, a field of radial wires should be used. Hustler 6-BTVs provide for automatic selection of bands through the use of optimum-Q traps which are individually and precisely tuned and internally sealed at the factory. These traps are parallel-tuned circuits, which provide very effective isolation between the vertical sections, permitting precise multi-band operation. Broadband operation, with low SWR over the entire ham band, limited on 80 and 75 meters , is possible in a proper installation. These antennas were designed to provide optimum performance from both an electrical and mechanical standpoint.
This stuff is so much easier to work with than LMR I think my runs are short enough that the loss is minimal. I had to adjust the traps a very small amount to get the resonant point where I wanted. I used it to reset all of the traps to their factory settings for initial tuning.
I bought the DX Engineering package with the tilt-over plate and radial plate - which I recommend whole heartedly. It gives you all you need though it doesn't save any money. If you put in a good radial system more than 20 wires you will probably want to order extra packages of the crimping wire terminals and SS bolts which connect the extra radials to the radial plate. After installation and tuning I found this an excellent vertical antenna. I have 28 66' radials and 14 33' radials all 14g stranded - nearly ' total and, with an antenna tuner, I get excellent service on all bands.