The CV2570 is a military marked 210HF. This battery triode was designed for HF use, and in those days a few MHz was high frequency. It is a receiver valve from the days of the TRF (tuned radio frequency) receiver.

The balloon envelope is 40 mm in diameter and, excluding the B4 base pins, is 79 mm tall.

 
Pin Connections

B4	1	2	3	4
	a	g	f	f

 
Absolute Maximum Operating Conditions

Triode	Vh	Ah	Va	Vg	mAa	ra	gm
	2.0	0.1	150	-3	1.6	15,800	1.5

This exhibit was last updated on 09 August 2006