Buzzing problem when using bridge pickup on its own

[Bobby K]

Hi chaps

I've got an old Hohner B Bass, just like this one that's for sale at the moment on BC

[url="http://basschat.co.uk/topic/156360-for-sale-hohner-b-bass-4-fretless/"]http://basschat.co.u...ass-4-fretless/[/url]

Problem is, whenever I Play the bass on the bridge pickup alone, I get a buzzing noise,

which then disappears when I put both pickups on full volume.

Any ideas what's causing this and how I can remedy it?

[Ou7shined]

That's single coils for ya.

You might get rid of it with some shielding.

[Bobby K]

Yeah was gonna try that anyway, out comes the copper tape again