Thank you, however, I doubt very seriously any antenna is going to
last over 70 years. But appreciate your input. Best estimate I
received from those in the business of installing the antennas is
in the area of 15-20 years.

Heh heh, well maybe you sounded "decrepit" to me in your original
posting? Anyway, the 15-20 figure is good. If you use heliax, seal the
hell properly out of all connectors, and mount the antenna and heliax very
firmly, those no reason other than extremes of nature (lightning,
huricane, etc,) to prevent it from lasting longer.



Ed