RRDB shows Tac 1 as countywide - 2020 FD channel listing shows Tac 1 as B11 and Coachella
here is the tac channels (and more) from the 2020 fd listing
CH# - DISPLAY - RX FREQ - RX CTCSS - TX FREQ - TX CTCSS - PW - RW/N - NOTES
1 RRU 1 151.3850 110.9 159.3600 OST H N CDF RRU LOCAL NET 1 WEST
2 RRU 2 151.1750 110.9 159.2850 OST H N CDF RRU LOCAL NET 2
3 RRU 3 IND151.1300 94.8 158.9250 OST H N CDF RRU LOCAL NET 3 INDIO
4 RRU 3 BLY 151.1300 88.5 158.9250 OST H N CDF RRU LOCAL NET 3 BLYTHE
5 RVC C1 154.1000 0.0 156.0000 OST H N RVC LOCAL CMD NET
6 RVC C2 151.0250 141.3 156.2400 OST H N RVC LOCAL CMD NET
7 RVC C3 151.0550 0.0 156.1800 OST H N RVC LOCAL CMD NET
8 RVC C4 154.4450 88.5 159.1500 OST H N T1=CHUCKWALLA,T2=BLACK ROCK,T3=BIG MARIA
9 RVC C5 154.1450 167.9 159.2325 OST H N T2=BOX SPRINGS, T13=PARADISE
10 RVC C6 154.4450 167.9 158.8200 OST H N T1=SANTIAGO PK, T3= ELSINORE PK
11 RVC C7 154.1300 167.9 158.9550 OST H N T12= MT DAVID
12 RVC C8 153.7700 167.9 155.6250 OST H N T5-HEMET,T6-THOMAS,T8-PINE COVE,T14 RED MTN
13 RVC C9 154.1750 167.9 159.1875 OST H N T10= WHITEWATER
14 RVC C10 154.7550 167.9 158.8350 OST H N T4= CACTUS CITY
15 RVC C12 154.8000 167.9 159.2025 OST H N T8= EDOM HILL
16 RIV C20 154.1750 141.3 158.9175 OST H N RIVERSIDE CITY VHF TO UHF (T2-Box Spgs)
17 RVC T1 154.3400 192.8 154.3400 192.8 H N R VC TAC 1 B11 & COACHELLA
18 RVC T2 154.4150 192.8 154.4150 192.8 H N RVC TAC 2 B8 & WEST COUNTY
19 RVC T3 154.0100 192.8 154.0100 192.8 H N RVC TAC 3 COACHELLA ONLY
20 RVC T4 154.2500 192.8 154.2500 192.8 H N RVC TAC 4 COUNTYWIDE
21 RVC T5 159.0375 192.8 159.0375 192.8 H N RVC TAC 5 B1, 5, 9, 13
22 RVC T6 154.7100 167.9 154.7100 167.9 H N RVC TAC 6 B3, 5, 11
23 RVC T7 154.8600 167.9 154.8600 167.9 H N RVC TAC 7 B1,9,14,17
24 RVC T8 155.4900 123.0 155.4900 123.0 H N RVC TAC 8 B1,2,4,6,7,12,13,16,17
25 RVC T9 155.6550 167.91 55.6550 167.9 H N RVC TAC 9 B2,13,15
26 RVC T10 158.9475 192.8 158.9475 192.8 H N RVC TAC 10 B6,7,8,10,12,16
27 RVC T11 155.1900 192.8 155.1900 192.8 H N RVC TAC 11 - ALL BATT'S EXCEPT BLYTHE
28 BCTC T12 158.8800 192.8 158.8800 192.8 H N LICENSED FOR USE AT BCTC ONLY!!
29 BCTC T13 159.1575 192.8 159.1575 192.8 H N LICENSED FOR USE AT BCTC ONLY!!
30 MURS 1 RX 151.8200 0.0 000.00000 0.0 N HT ONLY Common user MURS / OLD TSC
31 MURS 2 RX 151.8800 0.0 000.00000 0.0 N HT ONLY Common user MURS / OLD TSC
32 MURS 3 RX 151.9400 0.0 000.00000 HT ONLY Common user MURS / OLD TSC
here is the tac channels (and more) from the 2020 fd listing
CH# - DISPLAY - RX FREQ - RX CTCSS - TX FREQ - TX CTCSS - PW - RW/N - NOTES
1 RRU 1 151.3850 110.9 159.3600 OST H N CDF RRU LOCAL NET 1 WEST
2 RRU 2 151.1750 110.9 159.2850 OST H N CDF RRU LOCAL NET 2
3 RRU 3 IND151.1300 94.8 158.9250 OST H N CDF RRU LOCAL NET 3 INDIO
4 RRU 3 BLY 151.1300 88.5 158.9250 OST H N CDF RRU LOCAL NET 3 BLYTHE
5 RVC C1 154.1000 0.0 156.0000 OST H N RVC LOCAL CMD NET
6 RVC C2 151.0250 141.3 156.2400 OST H N RVC LOCAL CMD NET
7 RVC C3 151.0550 0.0 156.1800 OST H N RVC LOCAL CMD NET
8 RVC C4 154.4450 88.5 159.1500 OST H N T1=CHUCKWALLA,T2=BLACK ROCK,T3=BIG MARIA
9 RVC C5 154.1450 167.9 159.2325 OST H N T2=BOX SPRINGS, T13=PARADISE
10 RVC C6 154.4450 167.9 158.8200 OST H N T1=SANTIAGO PK, T3= ELSINORE PK
11 RVC C7 154.1300 167.9 158.9550 OST H N T12= MT DAVID
12 RVC C8 153.7700 167.9 155.6250 OST H N T5-HEMET,T6-THOMAS,T8-PINE COVE,T14 RED MTN
13 RVC C9 154.1750 167.9 159.1875 OST H N T10= WHITEWATER
14 RVC C10 154.7550 167.9 158.8350 OST H N T4= CACTUS CITY
15 RVC C12 154.8000 167.9 159.2025 OST H N T8= EDOM HILL
16 RIV C20 154.1750 141.3 158.9175 OST H N RIVERSIDE CITY VHF TO UHF (T2-Box Spgs)
17 RVC T1 154.3400 192.8 154.3400 192.8 H N R VC TAC 1 B11 & COACHELLA
18 RVC T2 154.4150 192.8 154.4150 192.8 H N RVC TAC 2 B8 & WEST COUNTY
19 RVC T3 154.0100 192.8 154.0100 192.8 H N RVC TAC 3 COACHELLA ONLY
20 RVC T4 154.2500 192.8 154.2500 192.8 H N RVC TAC 4 COUNTYWIDE
21 RVC T5 159.0375 192.8 159.0375 192.8 H N RVC TAC 5 B1, 5, 9, 13
22 RVC T6 154.7100 167.9 154.7100 167.9 H N RVC TAC 6 B3, 5, 11
23 RVC T7 154.8600 167.9 154.8600 167.9 H N RVC TAC 7 B1,9,14,17
24 RVC T8 155.4900 123.0 155.4900 123.0 H N RVC TAC 8 B1,2,4,6,7,12,13,16,17
25 RVC T9 155.6550 167.91 55.6550 167.9 H N RVC TAC 9 B2,13,15
26 RVC T10 158.9475 192.8 158.9475 192.8 H N RVC TAC 10 B6,7,8,10,12,16
27 RVC T11 155.1900 192.8 155.1900 192.8 H N RVC TAC 11 - ALL BATT'S EXCEPT BLYTHE
28 BCTC T12 158.8800 192.8 158.8800 192.8 H N LICENSED FOR USE AT BCTC ONLY!!
29 BCTC T13 159.1575 192.8 159.1575 192.8 H N LICENSED FOR USE AT BCTC ONLY!!
30 MURS 1 RX 151.8200 0.0 000.00000 0.0 N HT ONLY Common user MURS / OLD TSC
31 MURS 2 RX 151.8800 0.0 000.00000 0.0 N HT ONLY Common user MURS / OLD TSC
32 MURS 3 RX 151.9400 0.0 000.00000 HT ONLY Common user MURS / OLD TSC