http://service.egg.com.tw/twoway/product/SST.pdf.
Looks like the amplifier gain is 15 dB. That is a low gain figure.
That is Ok because the Local Canada Tv stations are , 1.5 ~ 5.7 , miles away and strong to medium strong signal strength.
So a lower gain amplifier is Ok to use as a 'Test' amplifier.
The amplifier might help with reception of the USA , NBC Tv station.