Total posts : 45366
The reason Part-15 operators use the upper end of the band is because of our antennas. The 10 foot antennas are more efficient there. Yes, the low frequencies cover better, but our antennas really lose efficiency on the low end. It’s good for carrier-current, though. Our college radio station, KEWC (may it rest in peace!), was on 640 and covered pretty well.