More info on your antenna compared to the 8-bay bowtie on UHF signals.
The following are approximate figures based on all the information I
can find. Your antenna gives an average gain of about 6 db while the
8-bay bowtie gives an average gain of 13.0 db. Depending on the
channel, the MINIMUM gain on your antenna is about 0 db while the
MINIMUM on the 8-bay bowtie is 9.5. I don't have specifics as to the
channels on your antenna. Every 3 db DOUBLES the signal. The average
horizontal beamwith of your antenna on UHF is about 31 degrees while
the 8-bay bowtie is about 21 degrees. BIG differences. The 8-bay
bowtie rejects signals coming from the sides and back several times as
much as your current antenna.