Posted in DXZone - Ham Radio 3900 Club iz4wnp 30 Gennaio 2022 0 Likes 69 Views The 3900 Club began in the 1960’s as a Sunday morning net of a dozen ham radio operators in, and around, the Sioux City, Iowa, area. The club was formally organized in September, 1969. Author: iz4wnp Related Articles 0 69 Youngsters On the Air – Facebook Group 0 68 K4GSO – Silver Springs Radio Club 0 63 Vhfdx.de 0 69 Great Bay Radio Association (W1FZ)