There is no local affiliate. Houston doesn't even have one.
See bold text for affiliates closest to Aggieland.
I share your frustration, OP. Here are the closest radio stations to College Station as the crow flies.
Let me know if any of these suffice.
2012 TEXAS RANGERS RADIO NETWORK
Station Frequency City
KZQQ-AM 1560 Abilene
KALP-FM 92.7 Alpine (weekdays)
KVLF-AM 1240 Alpine (weekends)
KGNC-AM 710 Amarillo (English)
KRZK-AM 1550 Amarillo (Spanish)
KPYN-AM 900 Atlanta
KWNX-AM 1260 Austin--> > 87 miles
KBST-FM 95.7 Big Spring
KTHS-AM 1480 Berryville, AR
KNEL-AM 1490 Brady
KBWD-AM 1380 Brownwood
KCLE-AM 1460 Burleson/Cleburne
KGAS-FM 104.3 Carthage
KCAR-AM 1350 Clarksville
KIVY-FM 92.7 Crockett--> > 70 miles
KESN-FM 103.3 Dallas (English)
KZMP-AM 1540 Dallas (Spanish)
KDQN-AM 1390 De Queen, AR (Spanish)
KAKS-FM 99.5 Fayetteville, AR
KWXI-FM 98.9 Glenwood, AR
KCLW-AM 900 Hamilton
KPXI-FM 100.7 Henderson
KWXI-AM 670 Hot Springs, AR
KWXI-FM 98.9 Hot Springs, AR
KHLE-FM 106.9 Kileen--> > 89 miles
KPET-AM 690 Lamesa
KTTU-FM 104.3 Lubbock
KMVL-FM 100.5 Madisonville--> > 33 miles
KWMW-FM 105.1 Maljamar, NM
KMHT-FM 103.9 Marshall
KILX-FM 104.1 Mena, AR
KASO-AM 1240 Minden, LA
KRZI-FM 101.3 Moody--> > 76 miles
KJVC-FM 92.7 Mansfield, LA
KBIX-AM 1490 Muskogee, OK
KNAS-FM 105.5 Nashville, AR (English)
KBHC-AM 1260 Nashville, AR (Spanish)
KTOK-AM 1000 Oklahoma City, OK
KGHM-AM 1340 Oklahoma City, OK
KVOP-AM 1090 Plainview
KPYN-AM 900 Queen City
KRUI-AM 1490 Ruidoso, NM
KKSA-AM 1260 San Angelo
KTKR-AM 760 San Antonio
KYAL-AM 1550 Sapulpa, OK
KSEY-FM 94.3 Seymour
KSYB-AM 1300 Shreveport, LA
KAKS-FM 99.5 Springdale, AR
KTKC-FM 92.9 Springhill, LA
KSST-AM 1230 Sulphur Springs
KRZI-FM 100.9 Temple--> > 68 miles
KKTK-AM 1400 Texarkana
KYAL-FM 97.1 Tulsa, OK
KTBB-AM 600 Tyler (English)
KYZS-AM 1490 Tyler (Spanish)
KRZI-AM 1660 Waco--> > 80 miles
KSEY-AM 1230 Wichita Falls/Seymour