| Frequency | Call Sign | Company name | RS | City |
|---|
| 42.9600 | WPAR893 | CLIFF YARNELL | IB | CHALLENGE |
| 42.9600 | WPAR893 | CLIFF YARNELL | IB | CHALLENGE |
| 152.8400 | KNKB464 | COOK PAGING | CD | CHALLENGE |
| 453.2240 | WPGI621 | YUBA, COUNTY OF | PL | CHALLENGE |
| 453.2250 | WPGI621 | YUBA, COUNTY OF | PL | CHALLENGE |
| 458.2250 | WPGI621 | YUBA, COUNTY OF | PL | CHALLENGE |
| 461.5250 | WPEA470 | AAA SALVAGE INC | IB | CHALLENGE |
| 461.5250 | WPEA470 | AAA SALVAGE INC | IB | CHALLENGE |
| 461.5250 | WPEZ582 | MOBILE TECH | IB | CHALLENGE |
| 461.5250 | WPEZ582 | MOBILE TECH | IB | CHALLENGE |
| 461.5375 | WPAR893 | CLIFF YARNELL | IB | CHALLENGE |
| 464.8000 | WPDM493 | SACRAMENTO PARKING GROUP | IB | CHALLENGE |
| 464.8000 | WPDM493 | SACRAMENTO PARKING GROUP | IB | CHALLENGE |
| 464.8000 | WPFU421 | BILLS FILTER & BATTERY | IB | CHALLENGE |
| 464.8000 | WPFU421 | BILLS FILTER & BATTERY | IB | CHALLENGE |
| 466.5250 | WPEA470 | AAA SALVAGE INC | IB | CHALLENGE |
| 466.5250 | WPEZ582 | MOBILE TECH | IB | CHALLENGE |
| 469.8000 | WPDM493 | SACRAMENTO PARKING GROUP | IB | CHALLENGE |
| 469.8000 | WPFU421 | BILLS FILTER & BATTERY | IB | CHALLENGE |
| 806.0000 | WNPY704 | CUMULOUS COMMUNICATIONS | GX | CHALLENGE |
| 806.7375 | WPGP581 | SUTTER BUTTES COMMUNICATI | GB | CHALLENGE |
| 851.3875 | WNPY704 | CUMULOUS COMMUNICATIONS | GX | CHALLENGE |
| 851.7375 | WPGP581 | SUTTER BUTTES COMMUNICATI | GB | CHALLENGE |
| 896.1875 | KNNT459 | PCS900 NETWORK INC | GU | CHALLENGE |
| 898.2500 | WPEP257 | PCS900 NETWORK INC | GU | CHALLENGE |
| 900.6500 | KNNL525 | GSC SERVICES | GU | CHALLENGE |
| 929.8625 | WPHK262 | PAGING NETWORK OF SAN FRA | GS | CHALLENGE |
| 935.1875 | KNNT459 | PCS900 NETWORK INC | GU | CHALLENGE |
| 937.2500 | WPEP257 | PCS900 NETWORK INC | GU | CHALLENGE |
| 939.6500 | KNNL525 | GSC SERVICES | GU | CHALLENGE |