On Aug 25, 2004, at 5:58 AM, Bill Fuqua wrote:
The specifications for the 4-250A are the same as the 4-400A
except for the plate dissipation. The 4-400A has fins added to the
anode. I prefer the 4-250A tubes when I have an amplifier with a
window. In SSB or CW a pair glows much better at full output power.
- Amen, Bill. When it comes to a cheery glow, tantalum plates are the
only way to go. .
73
Bill wa4lav
At 10:13 AM 8/25/2004 +0100, Steve Thompson wrote:
I've come across some of these tubes - are they useful as spares for
any
commercial kit? Do they have any particular vices or virtues?
Thanks,
Steve
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Richard L. Measures, AG6K, 805.386.3734. www.somis.org
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