I think the comment stated the River Forth...

I have found two Forth villages in Scotland (not very close to Forth River) and in Germany (part of Eckental).

Yes, it is. But remember, that Russian clones have stronger output for SAVE, than original Ferranti ULA. ZX Taper read ssignals from 1 V up. https://translate.google.com/translate?sl=auto&tl=en&u=http%3A%2F%2Foldcomp.cz%2Fviewtopic.php%3Ff%3D39%26t%3D3597%26hilit%3Dtaper%26start%3D75%23p44350

Unfortunately, we need only mass production ( big batch ) for QL case to have the resonable price.

Can be the ZX Spectrum Next case used for QL/Q68 board?
That is mass produced, and we can try some negotiation about suprlus production for QL use.

I cant remember whether or not WHEN ERRor is part of SuperBASIC QL ROM (post JM) This SuperBASIC structure does not work very reliably on any QL versions other than Minerva v1.77 (or later), SMS or the THOR XVI: although Toolkit II improves the reliability... https://superbasic-manual.readthedocs.i...

Derek_Stewart wrote:I also think Micro-SD cards would be easier to purchase.

...and easier to lost in a carpet.
I vote for big SD cards. Option 1 or 4.

ql_freak wrote:Is it possible to connect a BBQL (1) with a multi frequency tube monitor and VGA D-SUB connector?

Only, if the monitor supports 15 kHz.

Who is d..3? Will d..3 share scans of manuals and maps, or content of diskettes? And, what is the status of FTC - is it free, abandoned, or still commercial? https://www.ebay.ca/itm/Vintage-Sinclair-QL-Software-Fleet-Tactical-Command-by-Di-Ren-/283902361083?_trksid=p2047675.m43663.l10137&nordt=t...

bwinkel67 wrote:Am I correct that all you can get out of the joystick connectors on the QL are 5 different keys?

Yes.
But this one goes to serial connector!

This is not intended for QL, but for ZX Spectrum 128.
UK version exists (search for "ZX Spectrum keypad"), but the spanish one is more common.

QL FDD controllers (at least Miracle's ones) can not handle 1.2MB 5.25" floppy drives. 1.2 MB 5.25" (high density) FDD has 360 RPM (same as 8"), while 3,5 " FDD (in IBM PC - Japanese computers as Sharp X68000 or PC-98 being an exception) and 360/720 K (double/quad density) FDDs ...