Amateur Radio Callsigns in ZIP Code: 94620
| Callsign | Name | City | State | Country |
|---|---|---|---|---|
| KE6CRC | SMITH, HUGH L | Oakland | CA | United States |
| WB6NDJ | Oakland Radio Communication Association | Oakland | CA | United States |
| WW6OR | Oakland Radio Communication Association | Piedmont | CA | United States |
| N6ORC | Oakland Radio Communication Assn | Oakland | CA | United States |
| KJ6CZ | ANDERSON, LAWRENCE F | PIEDMONT | CA | United States |
| KM6OCB | Robinson, Arthur D | Piedmont | CA | United States |