You are looking for the VSQS1578 remote.

You can get the manual by going to Panasonic.com, consumer, product support, then entering the number of the other half of the set, PVHD1000 !

Or go directly to [Link: service.us.panasonic.com]. The remote is illustrated on page 4.

...or maybe that remote only works the VCR. I haven't read that far in the manual, but you have a starting place!

I just looked over the whole manual. It doesn't mention the tuner AT ALL. Back where you started. Sorry.