In Big Spring don't use: 146.220 (input), 146.820 (out) or 147.04
(out), 147.604 (input) while in the air. You can use them on the ground if you
are a licensed ham operator.

http://www.artscipub.com/repeaters/local/index.asp?state=Texas&city=Big Spring

Two meter repeaters:

144.60-144.90 FM repeater inputs

145.20-145.50 FM repeater outputs

146.01-146.37 Repeater inputs

146.61-146.97 Repeater outputs

147.00-147.39 Repeater outputs

147.60-147.99 Repeater inputs

http://www.arrl.org/band-plan

In Americus, Georgia we were hitting the repeater on Lookout Mountain from
4,000' on 144.750.

http://www.artscipub.com/repeaters/search/index.asp?find=W4GTA

http://noji.com/hamradio/repeaters.php