You don't tell us if this one has to come out from the solder joints on
the inside or if it has a screw just outside the case where the top part
can be taken off. If the latter why don't you just remove the screw,
take the top part of the antenna to RS and attempt to match it up?

colin wrote:

I need a new antenna for the RF-B45, but Panasonic are worse than
useless. The only models they list spares for are the RF-B55 and the
RF-B33. Does anyone know which antenna will fit the 45, or where I can
get the correct one for the 45?

Thanks for your help

Colin