| Capital Radio Club | Sacramento | K6SAC | http://www.k6sac.org |
| River City ARCS | Sacramento | N6NA | http://www.n6na.org |
| North Hills Radio Club | Sacramento | K6IS | http://www.k6is.org |
| Samuel F Morse Amateur Radio Club | Sacramento | W6SFM | https://www.w6sfm.org |
| Sacramento Amateur Radio Club | Sacramento | W6AK | http://www.w6ak.org |
| Elk Grove Florin Amateur Radio Club | Elk Grove | W6EGF | |
| Sierra Foothills Amateur Radio Club | Auburn | W6EK | https://www.w6ek.org |
| Berryessa Amateur Radio Klub (BARK) | Woodland | K6BER | http://www.barkradio.org |
| Mount Vaca RC (MVRC) / Yolo Amateur Radio Society (YARS) | Davis | K6MVR / W6YAR | http://www.mvrc.org |
| El Dorado County Amateur Radio Club | Placerville | AG6AU | http://www.edcarc.net |
| Western Placer Amateur Radio Club | Lincoln | K6PAC | http://www.wparc.us/ |
| Lincoln Hills Amateur Radio Group | Lincoln | W6LHR | http://www.lharg.us |
| Mother Lode DX Contest Club | Pine Grove | K6AO | http://www.mldxcc.org |
| Nevada County Amateur Radio Club | Grass Valley | W6DD | http://www.ncarc.org |
| Yuba-Sutter Amateur Radio Club | Yuba City | W6KJ | http://www.ysarc.net |
| Northern California 900 Mhz Repeater System | Diamond Springs | NC9RS | http://www.nc9rs.com |
| Northern California Contest Club | Northern California | K6ZM | http://www.nccc.cc |
| Paradise Amateur Radio Society | Magalia | W6PAR | http://w6par.org |