According to Chron's Steve Kroner, the new A's radio station combo will include KYCY-1550 and KNTS-1220, not KTRB-860. There is one particular huge catch. KNTS will not carry weekday day games, and games that start between 4 and 6 will be picked up in progress at 6 PM.
Another downside is the station's signal. During the day, KNTS broadcasts at 5,000 watts, but at night it ekes out a mere 145 watts. That's right, folks, your desktop computer and microwave oven are more powerful. The point of having KNTS is supposedly to increase the A's presence in the South Bay, but as you can see from the maps below, that just isn't the case right now, at least not at night.
There is hope in the future should KNTS and A's decide to pursue a long-term deal (and drop the join-in-progress-at-6 policy). KNTS has a construction permit to build a 50,000-watt, 24/7 transmitter in Hayward. The transmitter would be just south of the San Mateo Bridge, close to the KTCT/KNBR-1050 transmitter. There are interference issues that need to be worked out, but should the A's be able to broadcast on the new KNTS, they'll be able to cover virtually all of the Bay Area with a single 50 kW station.
Day Coverage (Future)
Night Coverage (Future)
In the short term, this is cold comfort. The KNTS construction permit expires in 2008, so they don't have to be in any real hurry to get it built, as is the case with KTRB.