NT58 @ The Valve Museum

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NT58

Sensibly equivalent^¶ to:

4304CB 834 CV1062 CV1288 DET12 POVT121A TY1-50 VT62

Extras ▼

GEC HMS Collingwood Museum

The NT58 (later renamed the CV1288) valve by GEC is a VHF transmitting triode with a commercial equivalent of the DET12. The data-sheet is of the similar 834.

The thoriated tungsten filament is just visible at the bottom of the carbon anode cavity and is a spiral around the vertical rod that holds the wire and makes the return connection. The grid and anode are seen connecting to the top of the envelope by substantial supports. The anode dissipation was 50 Watts.

The balloon envelope is 60 mm in diameter and, excluding the B4 base pins, is 140 mm tall.

References: Data-sheet, ¹⁰⁰⁵ & ⁴⁰⁰¹.

Pin Connections

B4	1	2	3	4	tc	tc
	nc	f	f	nc	g1	a

Absolute Maximum Operating Conditions^¶

Triode	Vh	Ah	Va	Vg	mAa	Pdiss	Pdriv	Pout	freq	f.max
	7.5	3.2	1000	-170	100	50w	6w	70W	100 MHz	300 MHz

Thanks to Frank Philipse for supplying the above PDF datasheet.

Updated January 04, 2022.

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