K1KAA
Here are some useful antenna and tower knots. Disclaimer: make sure you observe all safety precautions when doing antenna work. I accept no responsibility for injuries or death related to tower and/or antenna work. If you aren't sure what you are doing, DON'T DO IT!
General Use Knots
- Bowline - Makes a non-moving loop near the end of rope. Can be tied one-handed. Good for making outriggers on yagi booms when raising them (to keep level).
- Figure 8 with loop - Stand-off's for harness (draw goes in loop) or to lift heavy antennas. The rope in this photo is for demonstration purposes only; use rope rated for what you plan to lift. If you are climbing and using this as a safety knot or even just lifting heavy antennas, tie a safety knot, such as a barrel knot, in the extra line.
- Tautline Hitch - I use this to terminate dipoles or to attach rope-rigging to anchors (for tower staging during pouring and such). It can be slid to adjust tension
- Two Half Hitches - Similar to the tautline, but tends to tighten when the rope is pulled (depending on the rope).
- Sheet Bend - Used to join two ropes of different thickness. CANNOT be tied with tension on the ropes; excess rope is required.
- Square Knot - Used to join two ropes of the SAME thickness. Don't use this to support anything! It will slip.
- Thief Knot - If you tie the squareknot wrong, it will look like this. Note the ends are on opposite sides, as opposed to the squareknot.
Climbing Knots
- Proper 8 with safety - The figure 8 with a saftey/backup knot, in this case, a simple barrell.
- Stopper - good for keeping rope ends from sliding out on a tram or even lift for lighter antennas.
- Muntermule - a way of descending without a safety 8 or belay device (such as a grigri). I use it to lower antennas that otherwise can't be lowered by a block and tackle. Can be controlled descent from the top of the tower, so long as there is a halfway decent groundcrew.
- Alpine butterfly - a linear loop that won't slide. Good for handholds or lifters on ropes that need persuation.
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