Hi John,
Unfortunately, although it should be a simple case of replacing the WiFi dongle (reconfig is
not required Paul), this doesn't appear to be as simple as it once was.
The critical point is that the replacement WiFi dongle
MUST be based on an
RT5370 chipset to be recognised by the PAW software. (see this early thread from 2015 for background if you are interested...
http://forum.pilotaware.com/index.php/topic,71.msg987.html#msg987...but ignore the links in the thread as most are now out of date/no longer appropriate - I have just checked them all.)
I have also checked the 'WiFi dongle' link from the 'Known Good Hardware' List (in the pinned posts at the top of the General Discussion Forum). Unfortunately the e-bay site that link points to, identifies the chipset of the dongles they now sell as MT7601 and the seller (Ernest Boutique - who I bought most of my early WiFi dongles from) now seems to be concentrating solely on bulk sales.
After about an hour trawling through old forum posts and checking e-bay links, however - most of which don't specify chipset - this one looks like it might be worth a try as it
does clearly state that it uses the RT5370 chipset (though we have had experience in the past of incorrect claims by sellers as you can see from the 2015 posts)...
https://www.ebay.co.uk/itm/201745493990Please let me know if it works and if so I will update the 'Known Good Hardware' List.
Best Regards
Peter