Your 6 band vertical only has SWR readings for 5 bands listed here: https://www.gigaparts.com/hustler-6-btv.html
Paul, The SWR charts would not be an all-inclusive for all of the bands this antenna supports. It is only there for a representation of their claim that the antenna has a VSWR of 2:1 or better on those bands 10M to 40M. The additional bands are not listed in this chart because they do not meet the VSWR claim of 2:1 or better.
This Hustler series has been around for almost fifty years and is quite broadbanded for a 24’ vertical. Adjusted for either 75 or 80M it is 100 kHz. wide at best. It performs best with ground radials to lower the takeoff angle to the horizon for better distance. There are many YouTube videos on the -BTV’s. We now offer an Intellitron AB-1612 Universal Antenna Tilt Base if you’re in an HOA to bring it down when not in use or to facilitate tuning.
OK thanks - will consider as part of my antenna deployment this spring
cheers
Paul, typically the lower bands 80, 160 require a tuner for BEST results on those bands to get SWR below 2:1. The LDG line is what I suggest. Depending on your power output is the model of LDG you would need. For example: I run an al-600 so I got the AT-600ProII. Here is our LDG line. Search results for LDG tuners GigaParts.com. Hope that helps! Doug W3CF/4