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				Triode |  
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				Introduced 
				in 1927 |  
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				The RE074n (Neutro) was adapted for use in HF 
				neutrodyne circuits |      
					
						| Vf | Af | Va | Vg | mAa | ra | gm | Pdiss |  
						| 4 | 0.065 | 150 | -9 | 3.5 | 11,000 | 0.9 | 0.6 |  
					
						| Equivalent | 1-409, A408, A409, 
						AD4, AD510, C9, DZ908, 
						G407, G409, 
						H406, H615, IKA, 
						L308, L414, M300, PM3X, R50, R75, 
						RE064, RO4109, TM2, 
						UX406 |  |  |  |