Wide Area Coverage · All Known Systems
Linked Repeater Systems
Every major linked repeater system serving Southern California — sorted open first, then membership/private. Open systems are free for any licensed ham to use. If you use an open system regularly, consider donating to help keep it running.
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Open Systems
Free for all licensed hams — no membership required. Key up and talk. Please consider donating if you use them regularly.
WIN System — Largest Open Linked System in SoCal
100+ linked repeaters spanning CA, 16 states, and 4 countries. IRLP Node 9100. Owned & operated by K6JSI. winsystem.org
| # | Site | Freq (MHz) | Offset | PL | Band | Access | Coverage |
|---|---|---|---|---|---|---|---|
| 1 | Vista | 448.800 | − | 100.0 | 70cm | Open | Oceanside / Vista / North SD |
| 2 | Palomar Mtn | 449.080 | − | 123.0 | 70cm | Open | Palomar Mtn — North San Diego County |
| 3 | Mt. Otay | 447.640 | − | 100.0 | 70cm | Open | Mt. Otay — South San Diego |
| 4 | Santiago Peak | 448.060 | − | 100.0 | 70cm | Open | Santiago Pk — Orange & Riverside Counties |
| 5 | Santa Ynez Peak | 448.900 | − | 123.0 | 70cm | Open | Santa Ynez Peak — Santa Barbara County |
| 6 | Sunset Ridge (2m) | 147.210 | + | 100.0 | 2m | Open | Sunset Ridge — Pomona / West Riverside |
| 7 | Sunset Ridge (220) | 224.160 | − | 71.9 | 220 MHz | Open | Sunset Ridge — Pomona / Riverside (220 MHz) |
| 8 | Chatsworth / SFV Loop | 448.900 | − | 100.0 | 70cm | Open | Los Angeles Basin & San Fernando Valley |
| 9 | Mt. Disappointment | 446.460 | − | 100.0 | 70cm | Open | Mt. Disappointment — SFV / Angeles NF |
| 10 | Santa Anita Ridge | 447.580 | − | 100.0 | 70cm | Open | Santa Anita Ridge — LA / OC border |
| 11 | Thousand Oaks | 448.940 | − | 100.0 | 70cm | Open | Thousand Oaks / Moorpark / Simi / Oxnard |
Condor Connection — 220 MHz Open Wide-Area Network
Open 220 MHz linked system covering CA, NV, AZ, and northern Mexico. Less crowded than 2m or 70cm — a hidden gem. condorconnection.org
| Call | Site | Location | Freq (MHz) | PL | Access | Notes |
|---|---|---|---|---|---|---|
| WB6RHQ | Rasnow Peak | Thousand Oaks / Ventura Co. | 223.940 | 156.7 | Open | Good SFV / Ventura County coverage |
| K8BUW | Santiago Peak | Orange County | 224.820 | 156.7 | Open | Dominant OC high site — excellent coverage |
| WB6RHQ | Toro Peak | Palm Desert / Coachella Valley | 224.180 | 156.7 | Open | 8,716 ft — superb valley floor coverage |
| W2IRI | Lyons Peak | San Diego County | 223.940 | 141.3 | Open | SD County node — note different PL |
| K7GIL | Quartzite Mtn | Victorville / High Desert | 223.840 | 156.7 | Open | Victor Valley & High Desert IE coverage |
| WB6RHQ | Frazier Mtn | Gorman / I-5 Corridor | 224.720 | 156.7 | Open | Tejon Pass — great for I-5 travelers |
| WB6BRU | Goat Mtn | San Joaquin Valley | 224.900 | 156.7 | Open | Northern gateway node into Central CA |
CARA — Catalina Island ARC (Solar-Powered)
Solar-powered, continuously active for 50+ years. Unique marine mobile coverage. EchoLink & AllStar connected. cararadio.com
| Call | Freq (MHz) | Offset | PL | Mode | Access | Notes |
|---|---|---|---|---|---|---|
| AA6DP | 147.090 | +0.600 | No PL (CSQ) | FM | Open | Main Catalina 2m — primary site. Works out to sea. |
| AA6DP | 446.140 | − | 110.9 | FM | Open | Avalon local — linked to 147.090 |
| AA6DP | 448.900 | −5.00 | 110.9 | FM / C4FM | Open | Catalina 70cm — Fusion and analog |
| AA6DP | 224.420 | −1.600 | 110.9 | FM (220) | Open | EchoLink *CATALINA* Node #384712 |
| AA6DP | 224.320 | − | 151.4 | FM (220) | Open | Costa Mesa node — AllStar N6ACG #57403 |
| AA6DP | 51.860 | −0.500 | 82.5 | FM (6m) | Open | 6m Catalina machine — active during E-skip |
Calnet Repeater Group — SoCal Nodes
17 statewide linked 440 MHz repeaters from San Diego to Lake Tahoe. AllStar + Brandmeister DMR. Open to all. calnet.org
| Site | Freq (MHz) | PL In | Mode | Access | Coverage |
|---|---|---|---|---|---|
| Pleasants Peak | 449.600 − | 151.4 | FM / C4FM | Open | LA & Orange County — excellent high site |
| Sunset Ridge | 447.020 − | 110.9 | FM / C4FM | Open | LA & San Bernardino County |
| Heaps Peak | 445.740 − | 136.5 | FM | Open | San Bernardino, Riverside, High Desert |
| Santiago Peak | 448.080 − | 88.5 | FM | Open | LA / OC / Southland wide coverage |
WD6EBY — Ventura County Linked System
Paul Strauss WD6EBY's multi-site linked system covering all of Ventura County and beyond. Includes 2m, 70cm, and a growing mesh network. Open to all hams.
| Site | Freq (MHz) | Offset | PL | Mode | Access | Coverage |
|---|---|---|---|---|---|---|
| Sulphur Mountain | 145.200 | − | 127.3 | FM | Open | Primary — county-wide Ventura coverage |
| Sulphur Mountain | 449.020 | − | 127.3 | FM | Open | 70cm companion — same excellent coverage |
| Camarillo Hills | 146.985 | − | 127.3 | FM | Open | Camarillo / Oxnard / Point Mugu area |
| Chatsworth Peak | 147.825 | − | 127.3 | FM | Open | West SFV / Simi Valley / Moorpark |
| Rasnow Peak | 146.700 | − | 127.3 | FM | Open | Thousand Oaks / Conejo Valley |
| Laguna Peak | 147.555 | + | 127.3 | FM | Open | Malibu / PCH coastal corridor |
| Santa Ynez Peak | 146.610 | − | 127.3 | FM | Open | Santa Barbara County / northern VC |
C.A.R.L.A. — California Amateur Radio Linking Association
Linked 70cm system covering Northern & Central California and western Nevada. SoCal coverage from the Tehachapi node. Open to all licensed hams. carlaradio.net
| Site | Freq (MHz) | PL | Access | Coverage |
|---|---|---|---|---|
| Tehachapi (SoCal gateway) | 449.580 − | 100.0 | Open | Tehachapi Mtn — SoCal / Central CA link |
| Pine Flat (Central CA) | 449.360 − | 100.0 | Open | Fresno / Kings River area |
| Mt. Oso (Bay Area) | 449.700 − | 100.0 | Open | San Jose / South Bay |
CLARA — Clairemont Repeater Association
Open system with Santiago Peak and Barstow sites. Wide SoCal coverage — particularly good for SD and the I-15 corridor. 145220.com
| Site | Freq (MHz) | Offset | PL | Access | Coverage |
|---|---|---|---|---|---|
| Santiago Peak | 145.220 | − | 107.2 | Open | Orange / LA / SD Counties from Santiago Peak |
| Barstow | 145.220 | − | 100.0 | Open | High Desert / I-15 / I-40 corridor to Barstow |
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Membership Systems
Open to all licensed hams who join the club. Membership generally available to anyone. Free to monitor; join to transmit.
PAPA System — SoCal's Premier Multimode Network
33 analog + DMR + D-STAR + P25 repeaters on 19+ hilltops. Coverage from Mexican border to SLO. Free to listen via Broadcastify. Membership opens TX access. papasys.com
| PAPA # | Site | Freq (MHz) | Offset | PL | Mode | Access | Coverage |
|---|---|---|---|---|---|---|---|
| PAPA 03 / SGO | Santiago Peak | 446.760 | − | 100.0 | FM / D-STAR / DMR | Member | LA, OC, SD, Riverside — massive multi-county reach |
| PAPA 04 / SDL | Saddle Peak | 447.680 | − | 100.0 | FM / D-STAR / DMR / P25 | Member | West LA, Santa Monica, Malibu — full Westside |
| PAPA 05 / SIG | Signal Peak (Laguna) | 447.340 | − | 100.0 | FM / DMR | Member | Coastal OC / North SD County corridor |
| PAPA 06 / LUK | Mt. Lukens | 447.260 | − | 100.0 | FM | Member | Northeast LA Basin / upper San Fernando Valley |
| PAPA 08 / WIL | Mt. Wilson | 448.420 | − | 100.0 | FM / DMR | Member | Entire LA Basin — the definitive LA high site |
| PAPA 11 / BLK | Black Mountain (SD) | 448.160 | − | 100.0 | FM / D-STAR / DMR | Member | North San Diego County |
| PAPA 21 | Redlands | 146.730 | − | 127.3 | FM | Member | San Bernardino Valley / Redlands area |
| PAPA 22 / A22 | Pleasants Peak | 447.920 | − | 100.0 | FM / DMR | Member | South OC / North SD — alternative to Santiago |
| PAPA 24 / ELS | Elsinore Peak | 447.700 | − | 100.0 | FM / DMR | Member | SW Riverside / Lake Elsinore / Murrieta / Temecula |
| PAPA 25 | Toro Peak | 447.200 | − | 100.0 | FM | Member | Coachella Valley / Anza-Borrego — 8,716 ft site |
| PAPA 28 | Needles | 447.000 | − | 127.3 | FM | Member | Needles / Colorado River / I-40 East IE |
| PAPA 29 | Low Potosi (NV) | 448.400 | − | 127.3 | FM | Member | Las Vegas metro — I-15 corridor coverage |
| PAPA 30 | South Mountain (Ventura) | 446.360 | − | 156.7 | FM | Member | Oxnard Plain / Ventura city area |
| PAPA 31 | Daniel Peak (East SD) | 447.640 | − | 103.5 | FM | Member | East San Diego County / Anza-Borrego approaches |
Keller Peak Repeater Association (KPRA)
IE's most active repeater community. Multiple daily nets. Membership is highly recommended and open to all. IRLP Node 3216. kpra.net
| Call | Freq (MHz) | Offset | PL | Band | Access | Notes |
|---|---|---|---|---|---|---|
| KE6TZG | 146.385 | + | 146.2 | 2m | Member | IE primary — daily swap, trivia, outdoor, traffic nets. IRLP #3216. |
| KE6TZG | 224.040 | − | 146.2 | 220 MHz | Member | 220 MHz companion — same great site and community. |
| KE6TZG | 449.925 | − | 146.2 | 70cm | Member | 70cm companion — program all three KPRA machines. |
DARN — Digital Amateur Radio Network (LA County)
LA County's hospital-affiliated ARES linked system. Active since 1959. Primary net Mondays 9 PM. Many hospital participants. darn.org
| Call | Freq (MHz) | Offset | PL / Tone | Mode | Access | Coverage |
|---|---|---|---|---|---|---|
| K6LNK | 445.140 | − | DCS 211 | FM (DCS) | Open | Mt. Wilson — LA County / hospital network wide |
| K6LNK | 224.300 | − | DCS 211 | FM (DCS) | Open | 220 MHz DARN companion — same Mt. Wilson site |
OC ARES — W4MCO Five-Site Linked System
Orange County ARES multi-site linked system. Analog and P25/DMR digital. Well-maintained and very active. ocares.org
| Site | Freq (MHz) | Offset | PL | Mode | Access | Coverage |
|---|---|---|---|---|---|---|
| Downtown OC (Primary) | 443.050 | + | 103.5 | FM / P25 | Open | Primary OC ARES machine — county-wide |
| Downtown OC (2m) | 146.625 | − | 103.5 | FM | Open | OC ARES 2m linked companion |
| East OC | 443.525 | + | 103.5 | FM | Open | Anaheim Hills / East Orange County |
| Pine Hills | 444.125 | + | 103.5 | FM | Open | Pine Hills area — South OC / inland |
| Southwest OC | 443.775 | + | 103.5 | FM | Open | SW Orange County / Laguna Beach area |
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Private / Closed Systems
These systems require sponsorship, invitation, or specific affiliation. You can often listen but not transmit without membership. Contact the organization for access.
Cactus Intertie System — Private UHF Network
Established 1971. Private remote base network covering CA, AZ, NM, NV, UT, CO, TX and beyond. Operated by Cactus Intertie, Inc. (501c3). Linked via full-duplex RF on 420 MHz. Membership ~$125/yr. cactus-intertie.org
| Site | Primary Freq | Access | Coverage / Notes |
|---|---|---|---|
| Mt. Wilson (LA) | 449.000 − | Private | Main LA node. PL varies — contact CII. Huge LA Basin coverage from 5,710 ft. |
| Santiago Peak (OC) | 449.000 − | Private | OC / Riverside node. Same 449.000 family — verify exact freq with CII. |
| Sunset Ridge (IE) | 420.675 + | Private | Historic IE/LA border node. 420 MHz links carry the inter-site backbone. |
| San Bernardino Mtns | 449.000 − | Private | Mountain node for IE and surrounding areas. Emergency power equipped. |
| Statewide + Multi-State | Various | Private | 12+ nodes in CA alone. Extends to AZ, NM, NV, UT, CO, TX, DC area, GA, MT. See cactus-intertie.org for full site list. |
Rabbit Radio Network — Private UHF Intertie
Founded 1964 by WA6COT. 7 UHF inter-linked sites on 9 mountain tops from SLO to San Diego and into Las Vegas. 649 miles of RF links, 43 transmitters. Provides link ports to the Cactus Intertie System. All members are control operators. Emergency power at all sites.
| Coverage Area | Access | Notes |
|---|---|---|
| San Luis Obispo → San Diego → Las Vegas | Private | Closed membership system. 9 mountain tops, custom-built sites. Linked to Cactus Intertie. Contact WA6COT for info. |
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Digital Linked Networks
DMR, D-STAR, Fusion/C4FM, and P25 systems that link repeaters via digital protocols. A digital-capable radio required.
| System | Mode | SoCal Entry Point | Access | Website | Notes |
|---|---|---|---|---|---|
| Brandmeister DMR | DMR | Many SoCal repeaters — search by TG | Open | brandmeister.network | World's largest DMR network. TG 3106 = California. Access via any Brandmeister-connected repeater or hotspot. |
| Western States DMR | DMR | Multiple SoCal sites | Open | westernstatesdmr.com | Open DMR C-Bridge network. Hosts Cactus TG 3185. TG CORA (8850) active. Weekly net Mondays 7 PM. |
| PAPA DMR | DMR | 446.760 − PL 100.0 (Santiago) | Member | papasys.com | PAPA's own DMR network linked across all PAPA sites. Standard PAPA TG lineup. |
| PAPA D-STAR | D-STAR | 447.680 − (Saddle Peak) | Member | papasys.com | PAPA D-STAR system. Sites at Saddle Peak (D4), Santiago (D3), Black Mountain (SD). Register your call with D-STAR first. |
| REF / DCS / XRF | D-STAR | Any D-STAR repeater | Open | dstarinfo.com | Global D-STAR reflectors. REF001C is very active. Connect from any D-STAR radio via local D-STAR repeater. |
| Yaesu WIRES-X / C4FM | C4FM / Fusion | W6NWG Palomar, CARA 448.900, others | Open | yaesu.com/wires-x | Yaesu's digital linking system. Many SoCal repeaters are Fusion-enabled. Room #26232 = SoCal Fusion. |
| PAPA P25 | P25 | Multiple PAPA sites | Member | papasys.com | PAPA's P25 network. Interoperable with public safety P25. Popular with EmComm operators. Check papasys.com for current site status. |
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VoIP / Internet Linking
Systems that link repeaters via the internet. Extends your radio's reach globally — even from a handheld on a local repeater.
| System | SoCal Entry | Access | Notes |
|---|---|---|---|
| IRLP — Internet Radio Linking Project | WIN System Node 9100 · KPRA Node 3216 · Many others | Open | DTMF-controlled VoIP linking. Dial node numbers from any IRLP repeater to connect worldwide. irlp.net |
| EchoLink | CARA Node 384712 · W6NWG · Many others | Open | Connects repeaters and PCs via internet. Licensed hams can connect from a smartphone app. echolink.org |
| AllStar / app_rpt | CARA N6ACG Node 57403 · Calnet nodes · Others | Open | Open-source node linking. Hubs at allstarlink.org. Connect via DTMF or the DVSwitch app. Very active in SoCal. |