I agree Kimba....Radio Shack will be missed.
I realize it's not as nearly as convenient,
but have you ever been in a Fry's store?
They are ten time better stocked on old style electronic gadgets and parts.
They have several stores in Northern California: (but probably not in walking distance)
Campbell, Concord, Fremont, Palo Alto, Roseville, Sacramento, San Jose, Sunnyvale.
The Fry's here even has Texas Longhorns on the balcony.