I have looked at the NoV and other documentation received from the RA. It
seems to be silent regarding any crossband working with amateurs in the
normal amateur bands. On the other hand, paragraph (b) of the Operating
Guidelines on the RSGB web site states that crossband operation involving
the 5 MHz spot frequencies is only permitted between those holding current 5
MHz NoVs.

As far as transatlantic working is concerned, the Operating Guidelines on
the RSGB web site refer to channel FA (effectively 5258.5 kHz USB) as being
used for this purpose between 0000 and 0900 UTC but the 'clockface' document
shows international tests as taking place between 0100 and 0400 UTC on
channel FC.

Let us see what Mal comes up with.

73
John Rabson G3PAI