RGN2004 Telefunken balloon mesh plate DW4 full-wave rectoifiers U14 U18

Description

The RGN2004 by Telefunken was first introduced in 1928.

It was Telefunken’s effort at making such a large bulbous rectifier.

It is quite large to compete with the UK made U18 counterpart!

Can cope with high voltage anode keeping filament set at 4 Volts.

Both valves have been tested in mint condition and full working order.