Where to obtain an Ameco TPA tunable pre-amp/active antenna?
 

Does anyone know where I might be able to purchase an Ameco model TPA
tunable pre-amp/active antenna? Apparently they're no longer able to obtain
a particular component in it and therefore it's no longer being
manufactured. I'll probably end up using an MFJ-1020C instead, but from
reading reviews on the 'net the Ameco TPA is really the better device.

I'd also be happy to purchase someone's used unit!

Thanks,
---Joel Kolstad