Hi, i would guess that depends on what they mean by "up to 10 Mbps", if it means they have a 10 Mbps feed to the network then that is not so good.
If they have a 100Mbps feed or more and are now using high capacity radio kit then it should be ok.
Have you tried to contact them direct and ask?
Bill Lewis - MD
Kijoma Broadband - (Division of Kijoma Solutions Ltd)
Fixed wireless ISP - ISPA/CISAS/RIPE members