The antenna you have is the Clearstream 2 which is good for UHF. But you need the version referenced with the VHF dipole called the Clearstream 2V or Clearstream 2MAX. Because 2 major Columbia stations for ABC and NBC are VHF, channel 8-WOLO and channel 10-WIS. There is a new version of the Clearstream 2MAX on sale at Walmart for $69. And the higher gain UHF version Clearstream 4MAX is sold at Best Buy, with an increase in UHF gain but the VHF dipole is about the same. An amplifier may or may not help depending upon signal strength and location. But Antop sells adjustable gain amps on Amazon which is nice to fine tune the gain level so you don't overload.Here's my RabbitEars link:
My antenna is "Antennas Direct" indoor/outdoor, costs $100 when I bought it 10 yrs ago, looks kinda like this one, except there's no black rod at the top and no stand, it's just the figure 8 part and a grill:
RabbitEars requires you to enter 13 ft minimum off the ground but my antenna actually sits on the floor leaning against the wall in a corner of my bedroom, this gives me the strongest signals of any placement in my apt, including hanging from the wall. I have only one tv.
I'm only interested in the 4 networks and PBS. I get good reception about 95% of the time during winter but during the summer it's more like 70% of the time.
Thanks much for any suggestions!