6abc (WPVI) is a low VHF signal. This antenna is a UHF and high VHF antenna. The VHF elements are for channel 7 and upwards. Since it is one continuous wire over 120" that may satisfy low VHF requirements but no guarantee.
The channel 6 frequency (82 mgz) has a wavelength of 12 feet (144"). You may have to try this second version and make the folded top and bottom VHF elements 16" each instead of 10". Altogether these with the UHF bends will add up to 144":
Also these VHF elements will have to be 3" rather than 2" from the fractal ones. If that doesn’t work, I can suggest another DIY antenna (customized for solely VHF channel 6) which can then be combined with a UHF antenna.
One possible problem with the Tuxedo antenna - excessively long VHF elements may interfere with the 4 UHF bays. If the 16" lengths interfere with the UHF signals, cut them to 15 or 14 and see if that still retains both UHF and low VHF. This will be a trial and error experiment because of the low VHF aspect… Will be interesting to see how this antenna handles low VHF.
PS a reflector (cardboard & aluminum foil) will help: 40" x 40" five inches back of the antenna.