A long while ago sorry but.. PL-310 has always been good for me. the 310 sounds better as well, slightly larger speaker and case, you
can still find them on aliexpress I think.

You can always put some wire on the hole left over and tape it on the wall or something. Even a piece of mains copper core 2.5mm solid would
stand upright (kind of) maybe at 60cms.

I always extend my Tecsun RXs antennas with a bit of extra wire 30cms as they always come up
a bit stingy with their telescopics which always break in the end. As you will know, I find 80cms of wire is good and for SW put as much as you can get on.
(though brings in more local noise as well)

I also put the plastic base on something metal and they bring the signal in even better, old toaster/big frying pan etc. bit of ground plane.

Adds a few dbs on the signals I find.