Current Membership:
 

American Radio Relay League (ARRL) (life member)
 

Deutscher Amateur-Radio Club (DARC)
 

DARC local club C26
 

Quarter Century Wireless Association (QCWA) (life member)

Old Old Timers Club (OOTC) (life member)

Northern California Contest Club (NCCC)

Northern California DX Foundation (NCDXF)
 

Passau DX Club

German DX Foundation (GDXF) (life member)

Bavarian Contest Club (BCC)

CWops
 

Past Membership:
 

Northern California DX Club
 

Mt. Diablo Amateur Radio Club
 

West Valley Amateur Radio Association
 

Hayward Radio Club
 

Palisades Amateur Radio Club