For a preliminary to viewing individual radar sites websites, you should check out "The Legacy of the United States Cold War Defense Radar Program" at:
http://www.fas.org/nuke/guide/usa/airdef/searching_the_skies.htm
A website dedicated to all those who served the military radar sites around the world (Anywhere, anytime, all job specialities, all military and civilian personnel.)
http://groups.yahoo.com/group/USAFRadarSitesVeterans/
The Mobile Military Radar web site is dedicated to presenting historical, technical and operational information as well as links to other Mobile Military Radar Unit web sites.
Listings for many AC&W websites, Germany, Vietnam, Japan, etc.
http://earlywarning.westgeorgia.org/
The website for the 765th AC&W Sq
http://www.angelfire.com/theforce/cafs/
19th Space Surveillance Sqd,Pirinclik AS,Diyarbakir,Turkey;
http://www.globalsecurity.org/space/facility/pirinclik.htm
71st ACS/TCS/TCF, Alleycats;
http://www.geocities.com/moopsx3/AlleycatAlumni.html
154th, Tennessee AC&W Group;
http://djenanekrater.50megs.com/index.html
505th TCG, Vietnam;
http://www.squawk-flash.org/
511th, Japan;
http://hometown.aol.com/reunion511/index.html
529th, Okinawa;
http://www.angelfire.com/pe/623ACW/
549th, Morocco;
http://djenanekrater.50megs.com/index.html
551st, AEW&C;
http://www.dean-boys.com/551aew/551staew.htm
551st, AEW&C;
http://www.551and552-aewc.org/index.htm
552nd, AEW&C;
http://www.dean-boys.com/552/552nd.htm
552nd, AEW&C;
http://www.551and552-aewc.org/index.htm
601st, Germany;
http://cms601st.tripod.com/
601st, Germany;
http://victorian.fortunecity.com/hurst/664/
602nd, Germany;
http://www.birkenfelder.org/
603rd, Germany;
http://www.603acw.com/
606th, Germany;
http://www.606tcs.org/
606th, Germany;
http://groups.yahoo.com/group/606tcs/
607th, Korea;
http://groups.yahoo.com/group/koreak6group/
607th, Korea;
http://607acw.org/
607th, Korea;
http://home.comcast.net/~skipbeach/wsb/html/view.cgi-home.html-.html
607th, Luke AFB AZ;
http://www.paulac.addr.com/607reunion.html
608th, Korea;
http://home.bellsouth.net/p/PWP-608ACW
608th, Korea;
http://groups.yahoo.com/group/608thACWKoreanWar/
610th, Japan;
http://groups.msn.com/610thACWSqRadarSitesSouthernJapan/homepage610thacwsq.msnw
613th, Japan;
http://www.netcommander.com/home/LWalker/site42/index.html
613th, Japan;
http://www.angelfire.com/al3/site42/index.html
615th, Germany;
http://cms601st.tripod.com/
615th, Germany;
http://www.wesmac.net/
615th, Germany;
http://www.birkenfelder.org/
619th, Germany;
http://www.birkenfelder.org/
619th TCS, Vietnam;
http://www.squawk-flash.org/
620th TCS, Vietnam;
http://www.squawk-flash.org/
621st TCS, Vietnam;
http://www.squawk-flash.org/
623rd, Okinawa;
http://www.angelfire.com/pe/623ACW/
624th, Okinawa;
http://www.angelfire.com/pe/623ACW/
637th, Othello WA;
http://groups.yahoo.com/group/othelloradar/
641st, Melville Labrador;
http://melvilleairstation.tripod.com/
642nd, Red Cliff, St John's NFLD;
http://www.pinetreeline.org/site37.html
642nd, Red Cliff, St. John's NFLD;
http://freepages.genealogy.rootsweb.com/~wlsetzer/usaf/redcliff.html
667th, Langanes Iceland;
http://www.usradarsitesiceland.org/
667th, Hofn Iceland;
http://www.usradarsitesiceland.org/
667th, Hofn Iceland;
http://pyrdek.tripod.com/
667th, Hofn Iceland;
http://members.tripod.com/~nhfan/h3.html
676th, Antigo WI;
http://www.military.com/HomePage/UnitCreatedPage/0,11003,701238,00.html
678th, Tyndall FL;
http://freepages.genealogy.rootsweb.com/~wlsetzer/usaf/tyndall.html
692nd, Baudette MN;
http://www.geocities.com/dhoodenpyle/692nd.html
707th, Grand Rapids MN;
http://campanagraphics.com/707radron/
707th, Grand Rapids MN;
http://www.af-acw.com/
712th, Alaska;
http://www.712acw.com/
714th, Alaska;
http://groups.yahoo.com/group/ColdBayAlaska/
716th, Lakeside MT;
www.military.com
719th, Sparrevohn AK;
http://mywebpage.netscape.com/wannabefastrider/page1.html
719th, Sparrevohn AK;
http://www.alsap.org/Sparrevohn/Sparrevohn.htm
734th, Morocco;
http://www.geocities.com/site_3_morocco/
734th, Morocco;
http://djenanekrater.50megs.com/index.html
735th, Morocco;
http://djenanekrater.50megs.com/index.html
737th, Morocco;
http://www.geocities.com/site_2_morocco/index.html
739th, Wadena MN;
http://groups.yahoo.com/group/Wadena739thRadarSite/
744th, Alaska;
http://murphydome.tripod.com/index.html
752nd, Empire MI;
http://groups.yahoo.com/group/EmpireAFS-Veterans/
753rd, Sault Ste Marie MI;
http://aztec.asu.edu/radar/753rd/
756th, Finland MN;
http://www.8thwood.com/finlandmn.htm
757th, Blaine WA;
http://home.comcast.net/~blaine757/
763rd, Lockport NY;
http://www.military.com/HomePage/UnitCreatedPage/0,11003,711714,00.html
764th, Saint Albans VT;
http://groups.yahoo.com/group/764th_RADAR_BASE/
764th, Saint Albans VT;
http://members.fortunecity.com/764thradar/
773rd, Montauk NY;
http://www.fortunecity.com/marina/seafarer/665/index.html
780th, Fortuna ND;
http://groups.yahoo.com/group/fortuna_afs/
781st, Ft Custer AFS,Battle Creek MI;
http://groups.yahoo.com/group/781st_Radron_DADS_Custer_AFS/
782nd, Rockville IN;
http://www.military.com/HomePage/UnitCreatedPage/0,11003,711710,00.html
785th, Finley City ND;
http://groups.yahoo.com/group/Finley_afs/
786th, Minot ND;
http://www.minotafs.org/
794th, Cape Newenham AK;
http://www.msnusers.com/capenewenham
794th, Cape Newenham AK;
http://users.erinet.com/35115/cape.htm
798th, Belleville IL;
http://www.798acw.com/
799th, Joelton TN;
http://www.joelton.com/history/airforce.htm
810th, Winston Salem NC;
http://www.nineveh-junction.com/810th/
848th AC&W, Detachment 36, JAPAN;
http://home.comcast.net/~brbergen/ez-master.html
848th, Japan;
http://po8.com/det45/index.htm
848th, WallaceAS, PHILIPPINES;
http://home.att.net/~philsite/wallace-1b.htm
848th, WallaceAS, PHILIPPINES;
http://www.usmilitarypi.com/wallace.htm
848th, WallaceAS, PHILIPPINES;
http://squatchman.home.mindspring.com/Wallace.htm
851st, Okinawa;
http://www.angelfire.com/pe/623ACW/
861st, Aiken SC;
http://www.military.com/HomePage/UnitCreatedPage/1,11003,711713,00.html
874th, Spain @ Inoges AS;
http://www.geocities.com/acwron874/
875th, Spain @ Rosas AS;
http://www.graceba.net/~kehamby/
877th, Spain @ Elizondo AS;
http://www.877acw.org/
917th, Puntzi Mountain Canada;
http://groups.yahoo.com/group/puntzimt/
922nd, Labrador;
http://www.military.com/HomePage/UnitCreatedPage/1,11003,713093,00.html
923rd, Hopedale Labrador;
http://www.pinetreeline.org/site22.html
924th, Saglek Labrador;
http://www.pinetreeline.org/site34.html
932nd, Iceland;
http://www.keflavik.af.mil/932acs/index.htm
932nd, Iceland;
http://www.usradarsitesiceland.org/
933rd, Iceland;
http://www.usradarsitesiceland.org/
933rd, Hofn Iceland; http://members.tripod.com/~nhfan/h3.html
934th, Iceland; http://www.usradarsitesiceland.org/
960th, AEW&C;
http://www.dean-boys.com/960/960th.htm
961st, AEW&C;
http://www.dean-boys.com/extras/961/961.htm
962nd, AEW&C;
http://www.dean-boys.com/962/history.htm
966th, AEW&C;
http://www.551and552-aewc.org/index.htm
4701st, AEW&C;
http://www.551and552-aewc.org/index.htm
6123rd, Korea;
http://groups.yahoo.com/group/koreak6group/
7424th, Germany;
http://www.birkenfelder.org/
AIRBORNE EARLY WARNING ASSN;
http://www.aewa.org/
ALASKA RADAR SITES;
http://groups.yahoo.com/group/ColdBayAlaska/
DETROIT AIR DEFENSE SECTOR (DC6,DADS)Ft Custer AFS, Battle Creek MI, 34th Air
Division, SAGE;
http://groups.yahoo.com/group/781st_Radron_DADS_Custer_AFS/
DEW LINE RADAR SITES; (sites in Canada, Alaska and Greenland);
http://www.lswilson.ca/dewline.htm
MID CANADA LINE;
http://www.lswilson.ca/mcl.htm
OKINAWA RADAR SITES;
http://groups.yahoo.com/group/KumeJimaOkinawa/
PORTLAND AIR DEFENSE SECTOR (DC13,PADS)Adair AFS; 26th Air Division
Sage;
http://members.aol.com/oregondesertrat/adair.html
PANAMA CANAL RADAR SITE;
http://www.canopytower.com/
PINETREE LINE, CANADA;
http://www.pinetreeline.org/
RADOMES, coverage of all known USAF RADAR SITES(worldwide);
http://www.radomes.org/museum/
THULE GREENLAND;
http://www.thule.af.mil/index.htm
THULE GREENLAND, 12th SPACE WARNING SQD;
http://www.peterson.af.mil/21sw/library/fact_sheets/12sws.htm
USAF TEXAS TOWERS;
http://www.551and552-aewc.org/551aew/texas.htm
USAF TEXAS TOWERS;
http://www.dean-boys.com/551aew/551staew.htm
USAF TEXAS TOWER ASSN;
http://www.texastower.com/
ALSAP - This isn't particularly a radar sites web, but, it has much content which those radar sites vets who served in AK might enjoy viewing. It contains information on skiing at many of the radar sites in Alaska. There are quite a few pictures of servicemen skiing, and many comments from those that skied while serving their year in AK.
http://www.alsap.org