- QST Ham Radio Magazine Article "The 'QRP 80-40' C.W. Transmitter" (6/69)Opens in a new window or tab二手HK$ 46.49egmjtl (7,759) 100%+HK$ 201.34 運費所在地: 美國
- QST Ham Radio Magazine Ad Keyers and QRP Equipment from TEN-TEC, Inc. (4/72)Opens in a new window or tab二手HK$ 95.79egmjtl (7,759) 100%+HK$ 202.90 運費所在地: 美國