16-04-2017, 02:52 PM
Alternative frequency changer valve. Some UK made Sparton radios were supplied with a Tungsram 6TH8G frequency changer valve in lieu of the 6K8G.
http://www.radiomuseum.org/tubes/tube_6th8.html
Geordie McBoyne.
http://www.radiomuseum.org/tubes/tube_6th8.html
Geordie McBoyne.







