At 07:43 AM 2/15/2000 -0700, measures wrote:
>? However, when the 20m tap on a SB-220 is used for 30m operation, the
>operating Q and the circulating current in the tank increases by c. 40%.
> This causes a doubling of the I-squared x R heating in the bandswitch
>contacts. Using the CW tap would help a bit, however, I would not take
>the risk. 220 bandswitches are no longer manufactured.
On the other hand, if he holds it to the legal 200W power for 30m, the
I-squared part will be pretty small, and the risk probably commensurate.
73, Pete N4ZR
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