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				RF amplifier pentode 
				Introduced in 1936 
				
					
						| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | tc |  
						| m | f | a | g2 | g3 | - | f | k | g1 |  
				  
					
						| Vf | Af | Va | Vs | Vg | mAa | mAs | ra | gm | Pdiss |  
						| 6.3 | 0.3 | 250 | 100 | -3 | 2 | 0.5 | 1,500,000 | 1.22 | 0.75 |  
					
						| Equivalent | ARP16,
						
						BVA247,
						EF36, EF37A, 
						CV358, CV1074,
						CV1935,
						CV1936,
						CV1937,
						
						NR49, OM5, 
						VR56, VT74(RAF),
						VT91,
						VT91A,
						Z63 |  |  |  |