|The Gi7B and the hardier Gi7BT triode valves
will run at up to 2.5kV, 12.6v heaters and 350W plate dissipation. Gain
about x20 - x25.
They can be used from HF to 10cm and provide a
low cost route to useful linears on most the amateur bands.
A pair will easily provide 1kW and just one should
give 400 watts out on 23cm. A single valve linear will give about 500W
out for 20W drive on 6m.
I occasionally have a few pre-prepared
valves which are available for only £40 each (plus carriage at cost)
G3RIK for availability and price delivered