>
>According to my Eimac shortform the 4CX250R and the 7580W are the same
>tube. BTW the R stands for "ruggedised" it can withstand a lot more
>vibration and shock than a standard 250. However the plate, screen and
>grid dissipation are the same as a normal 250 and have the same typical
>output power. Eimac catalog for the 4CX250B/7203 & the 4CX250BC/8957 both
>give typical output power of 300W at 175 MHz in AB1 operation.
>
However, "Typical" is typically not maximal.
>In summary:
>
>4CX250B/BC anode 250W
> screen 12W
> grid 2W
>
>4CX250R anode 250W
> screen 12W
> grid 2W
>
>What's the difference?
25% higher screen potential and c.40% higher peak anode current -- but
only for SSB service. .
- later, John
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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