Tetrode Transmitting tubes 4D21/E125A Unidentified manufacturers
- Tube Type
- Tetrode
- Substitute under reserve
- 4-125A,6155,AX4-125A,C1108,CV2130,CV2963,E125A,E1870,GL-4D21,PL-4D21,QB/3/300GA,QB3/300,QY3/125,RE125A,RK-4D21,RS1007,RS685,SRS455,TT16,TT16D,WL-4D21
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