[WARC] James' tower raising

[James Carroll]

On Thu, Oct 1, 2009 at 9:34 PM, James Jarvis <jj at aprsworld.com> wrote:

>
>
> In the near future, I will be installing a safety climb device on the
> tower. This is a permanently installed steel cable that goes up one face.=
 A
> cam/slider is fitted to that cable. It allows unrestricted up movement, b=
ut
> locks in place in the event of sudden down movement.
>

Russ Marsolek would call that a really heavy-duty Prussik.

Jim KB0LZ
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