Hi,
Yes, agreed, the CO stations use 868 MHz and AFAIK the Maplin's always 434 MHz.
Also, the manufacturer (Fine Offset) changed the Wireless Protocol (data format), I believe with the CO's since 2012 (Maplin's changed earlier). However, these stations are sold under numerous other "badges" so you might find an alternative supplier:
The best starting point might be
Walters and Stanton but they are rather more expensive than Maplin. They seem to have several possible replacements; I think the 868 in the model numbers is the radio frequency so a "Watson" 8681 transmitter might be suitable. As a "specilaist" supplier they may be able to help you, I suspect that you need a "mark I" version, but do make sure that you can return anything that isn't suitable.
Note there are at least
four types of transmitter, even excluding the different radio frequency and protocol versions: One of the two Maplin's is for a station with no wind Vane (or USB interface), so is certainly usuitable for any station compatible with Cumulus. Some transmitters (e.g. the other from Maplin) don't support the Radio Controlled Clock, so that part can't work (but the Console can still be set manually). You probably have (an early version of) the "third" type, whilst the fourth supports solar measurements, which surprisingly are "(backwards) compatible", but only with the "later" protocol (which I don't believe your station uses).
Cheers, Alan.
