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Jeez Reggie,
On Mon, 26 Apr 2004 09:21:12 +0000 (UTC), "Reg Edwards" wrote: The electrical properties of sealing materials and greases are not defined or specified. However... A few spots of super-glue would be ok. I would be MOST curious about the defined properties of this wondrous material. However, super-glue is not a void filler a function which may still need to be performed. Bet let us continue. There's no need to run open-wire line through walls and windows via two spaced holes. The building material between the wires will probably be of awful dielectric quality anyway. seems to contradict: When coming through glass or DRY varnished timber a single hole is fine. On high power lines make sure the insulation on the wires where they are close together is thick enough to withstand the high voltage at high SWR. Which in turn seems to lead to another contradiction: At HF, the discontinuity in Zo due to bringing the wires close together for a few inches, even a foot or more, is absolutely negligeable. Hmm, just about spark gap dimensioning, close to combustibles, High SWR jacked up even higher to boost voltage nodes more (I don't know how the "short" distance ameliorates this - must be in the actuarial tables somewhere). This was certainly the most obscure way of saying don't worry about it. ;-) 73's Richard Clark, KB7QHC |
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