@matigo I think it was about 30, but:
We live in a geographic hole, making TV reception challenging. The only reason I tried it again was the last time I checked was nearly a decade ago (prior to the digital transition in the US).
Anywhere I could put the antenna to improve the signal would be highly visible (not acceptable to my wife) and still did not pull in signal consistently enough to make it worth the trouble.
As such, the only ways to get local channels at my house is to pay the Comcast ransom.