>
>> And I was going to drive it from a modern transceiver capable of 100
>> watts into 50 ohms (70 volts peak).
>
>70 volts peak is 50 volts RMS. That's 50 watts.
>
>100 volts peak is 70.7 volts RMS, and that's 100 watts.
>
>> Then connect a 1:4 toroidal step-up transformer between the
>> transceiver and the grid of the tube to create the correct driving
>> voltage, swamped with an 800 ohm resistor...
>
>800 ohms divided by 4 is 200 ohms. Are you sure you want to load
>the rig with 200 ohms? Or are you saying a 1:4 TURNS ratio, which
>is 1:16 transformer?
>
>If you are going to wind a 1:16 transformer at 800 ohms, and
>expect a low SWR over the entire HF spectrum, you might not get
>it. The input C of the tube will kill it.
>
? Due to the intrinsic winding C of a Trifilar or Quadrafiliar
transormer, driving only the term. R load, the SWR will be ok for only a
narrow bandwidth.
>......
- cheers, Tom.
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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