Britain's Vintage and Military Amateur Radio Society , affiliated with the Radio Society of Great Britain, coordinates regular on-air "nets" where enthusiasts gather as well as massive technical files for the benefit of members. The Surplus Radio Society, a Dutch society of collectors of old ex-military radio equipment and other nostalgic receivers and transmitters holds weekly radio activity nets every Sunday on 3.575 MHz CW / 3.705 MHz AM and sponsors several flea markets and exchange fairs each year.
