Not so much crazy as why exactly would you need to cool a feedline or matching balun? Have you got an extraordinary mismatch? Shouldn't your RF be radiating instead of making heat? And the same comment for running a fan! Fairly extraordinary situation you have there, Neil.
The issue is that the radiation resistance is around 5 ohms, so I need to step the impedance down a ton to get a match. The loading coil between the matching transformer to get this 6m dipole down to the 10m band is what's overheating because of all the resulting current. :(
You're talking about a trap dipole which will require capacitors to fit up the impedances. A fan dipole is easier and will work the first time. Just wind up your excess length on the loading coils.
Comrade Weez
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