|   | 
				Military tube, double push-pull output pentode 
				Introduced in 1934 
					
						| 1 | 2 | 3 | 4 | 5 | 6 | 7 | base |  
						| g1 | g2 | a(2) | f, as* | f | csg** | a(1) | 7-pin M7A |  
					
						|  |  
						| *) anti-secondary grid |  
						| **) common screen grid |  
						|  |  
					
						| Vf | Af | Va | Vs | Vg | mAa | mAs | gm |  
						| 2 | 0.4 | 150 | 150 | -4.5 | 5.6 | 1.4 | 2.3 |    
					
						| Equivalent | 10E/9779, 240QP, CV1035, QP21 |  |