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Using the Gi-7B 350W Triode
 

Preparing the valve for use
Detailed Valve Specifications
K8CU's Design for GS35 has some excellent tips applicable to any linear
(particularly pre-adjusting the Pi-tank) 
HF Linears 9A3MR  W4EMF
W4EMF
4m/6m Linears YU1AW 9A6C
G0ROC  (RADARS)
2m Linears UA1OJ YU1AW
YU1AW YU1AD/G3MY
70cm Linears RA3YO SP5CIC
YU1AW
23cm Linears CT1DMK DJ3FI
DL4MEA OK1KIR
S57UUU UA1ZCL
VE4MA

SUPPLIERS OF PARTS FOR LINEARS
Gi-7B (or Gi-7BT) UT7CT Tubes.ru
EBay (Tony Walsh) Ebay (KWtubes)
LY1DQ
G3RIK (pre-prepared tubes)
Doorknob capacitors EBay (Tony Walsh) Ebay (KWtubes)
Transformers From scrap Domestic Microwaves (2KV, 600W continuous)
(Can only be used half-wave since one end is near ground, so you need two for full-wave rect. use)
Gi-7B Grid Rings G4VVT 
General Items Surplus Sales of Nebraska RF Parts
G3SEKs Triode Protection Board