PCARES - COMMON KNOTS

PCARES

Amateur radio operators are frequent users of literal ropes and knots because a huge part of the hobby involves building, lifting, and securing custom outdoor antennas.

Whether setting up a permanent station or building a temporary station in the woods for an event like Field Day, hams use specific knots for several critical reasons:

Tensioning Guy Lines: Antenna towers and wire antennas must withstand high winds. Hams use knots like the Taut-Line Hitch or the Trucker's Hitch to create adjustable, high-tension lines that hold heavy mast poles upright without slipping.
Hoisting Heavy Wire into Trees: To get a wire antenna high up into the canopy, operators will throw a weighted line over a branch and pull up a heavy rope. Non-cinching loop knots like the Bowline are used to safely secure the antenna wire or insulator so it can be hoisted without choking the line tight.
Easy Dismantling: A good ham radio knot must hold under extreme pressure but remain easy to untie when it is time to pack up. Knots like the Figure-Eight or Zeppelin Bend are popular because they do not "jam" or become permanently locked after being subjected to high tension.

Step-by-Step Instructions

First Half Knot:
- Hold one rope end (or cord/string) in each hand.
- Take the right end and cross it over the left end, then loop it under and pull it through.
Second Half Knot:
- Now take the end that is in your left hand (which was originally on the right) and cross it over the end in your right hand.
- Loop it under and pull it through in the opposite direction of your first turn.
Tighten:
- Grab the standing parts or both ends and pull them firmly together to lock the knot flat.

How to Tie a Half Hitch

Pass the rope around: Wrap the working end of the rope around your target object, post, or anchor point.
Cross the line: Bring the working end around and cross it over or under the standing part of the rope.
Tuck through the loop: Pass the working end through the loop or eye you just formed.
Tighten: Pull the working end tight to cinch the knot against the object

Steps to Tie a Bowline

Form the "Rabbithole": Make a small loop in the rope a short distance from the working end (the "rabbit").
Come Up Through the Hole: Pass the working end (tag end) up from underneath and through the small loop.
Go Around the "Tree": Take the working end behind the long standing part of the rope (the "tree") from right to left.
Go Back Down Through the Hole: Route the working end back down and through the original small loop.
Tighten and Dress: Hold the working end and the sides of the loop while pulling the standing part of the rope to cinch the knot tight into a clean U-shape

How to Tie the Taut-Line Hitch

Anchor the line: Pass the working end (tag end) of your rope around a pole, tree, or stake.
Wrap inside the loop: Bring the working end over and under the standing part of the rope. Wrap it around the standing line twice on the inside of the loop (moving toward your anchor point).
Make the locking half-hitch: Bring the working end to the outside of the loop, crossing over the standing line. Tuck the working end underneath itself to form a half-hitch facing the opposite direction (making a total of three wraps: two inside, one outside).
Tighten and adjust: Pull the working end to snug the knot down. To adjust tension, grab the knot and slide it up or down the standing line

Step-by-to-Step Tying Instructions

Make a bight: Fold the end of the thicker rope back on itself to form a U-shaped loop.
Pass through: Take the end of the thinner rope and push it up through the bight from the bottom.
Wrap around: Bring the thinner rope around the back of both strands (legs) of the thicker rope's bight.
Tuck under: Tuck the end of the thinner rope under itself, passing it between the thinner rope and the short arm of the bight.
Tighten: Pull both ends of the ropes firmly to cinch the knot closed.

Step-by-Step Instructions

Measure your tail lengths: Grab both ends of the rope together and pull out roughly two full arm spans (wingspans) of double strand rope. Drop these ends to the ground; you will use them later to secure and wear the coil.
Coil the rope: Take the remaining doubled rope and flake or loop it back and forth over your shoulders or neck. Alternating loops from side to side (a butterfly coil technique) prevents the rope from twisting and kinking.
Bundle the center: Gather the loops off your shoulders, holding them tightly together in one hand. Grab the long tail strands you set aside in Step 1 and wrap them tightly around the upper middle of the bundled coils 4 to 5 times.
Lock the coil:
- Fold a small loop (a bight) out of the remaining tail strands.
- Push this bight through the top opening of your gathered coils.
- Tuck the remaining loose ends of the tails completely through that bight and pull down firmly to cinch the bundle closed

Basic Figure-8 Stopper Knot

Make a loop: Hold the rope and form a small loop near the working end (the tail).
Wrap behind: Take the tail and bring it underneath the standing part of the rope.
Tuck through: Feed the tail down through the top loop you just created.
Tighten: Pull both ends to tighten and dress the knot into a clean figure-eight shape.

Figure-8 Follow-Through (for Climbing)

If you need to tie into a harness or create a secure loop, use the follow-through method:

Measure: Measure about 3 feet (or arm's length to your nose/opposite shoulder) of rope from the end.
Tie a loose figure-8: Tie a basic figure-8 shape in the middle of that measured section.
Thread: Pass the tail through your harness tie-in points.
Retrace: Feed the tail backward through the original figure-8 knot, following the exact parallel path of the rope in reverse.
Inspect: Check for 5 sets (10 lines) of parallel ropes and leave a tail of at least 6 inches.

Types of Ropes and Construction:

Natural Fiber Ropes

Made from plant-based sources; typically biodegradable, softer in the hand, and lower in tensile strength:

Manila: Strongest natural fiber (made from abaca); resists saltwater well; often used for marine use, landscaping, and fitness training.
Cotton: Very soft, flexible, and gentle on hands; ideal for indoor décor, crafts, and pet toys.
Sisal: Rigid and coarse fiber from agave plants; commonly used in agriculture, bundling, and cat-scratch posts.
Coir: Made from coconut husks; lightweight and water-resistant, frequently used for erosion control.

Synthetic Fiber Ropes

Engineered from petroleum-based plastics and polymers; offer high strength, weather resistance, and rot resistance:

Nylon: Strong and elastic with high shock absorption; great for towing, anchor lines, and fall-protection.
Polyester: UV-resistant and low-stretch; maintains strength when wet, making it a favorite for sailing and heavy rigging.
Polypropylene: Lightweight and buoyant (it floats on water); used extensively for water rescue and swimming barriers.
UHMWPE (Dyneema / Spectra): Higher strength-to-weight ratio than steel with near-zero stretch; used in high-load marine rigging and winching.

Rope Construction Types

Twisted (3-Strand / Laida): Traditional and economical design made of three strands twisted together; easy to splice, commonly used for general utility and tow ropes.
Kernmantle: Features an inner core (kern) that bears most of the load, wrapped in a protective outer sheath (mantle); standard for rock climbing and rescue operations.
Double Braid: A braided rope core wrapped inside a separate braided outer cover; delivers high strength and great abrasion resistance.
Single / Hollow Braid: A single tubular weave with an empty center; lightweight, flexible, and easy to splice (popular for anchor lines)

The improper use of rope may be dangerous!

Rope is one of the oldest and most used tools known to mankind. Every day our rope gets shipped all over the USA and Canada to be used in an amazing variety of applications. One thing we take very seriously is the safe use of rope for those applications that involve lifting, pulling, towing or, most important, human support.

Please keep the following in mind....

Do not overload rope
Avoid shock loading rope whenever possible
Do not use rope in applications beyond the heat rating of the rope
Be sure to use the correct size rope for the job
Avoid any area around the linear length of loaded rope
Keep rope away from all chemicals to prolong safe working life
It is the user's responsibility to use rope in a safe manner!!!

Rope Strength:

All rope has a rating referred to as a "tensile strength" or "average break strength." This number is the amount of weight that the rope should be able to hold in ideal conditions, specifically, a new rope, with no knots or splices, at room temperature. These break strength numbers are based on actual destructive break testing by the manufacturer or a certified third-party testing facility. Ropes are tested over many cycles and the average break strength is determined and specified for the product. We test our ropes personally, and all our splicers have their work tested on an ongoing basis using a certified test bed facility. This is to ensure that their splicing work is perfect, and that their splicing technique and skills are 100% within acceptable splicing guidelines set by the rope industry. Even the best splices and best rope can break if overloaded or used improperly. Make sure you thoroughly understand what you are doing with a rope. Get the right rope for the right job. If you have questions or are even remotely unsure or have doubts..STOP and get the information you need to BE SURE you are doing things safely.

Rope wear, knots, extreme hot or cold temperatures, chemicals, the manner in which the load is applied and other factors will result in a break strength lower than the stated average break strength.

A rope with a stated or advertised break strength, in pounds will not necessarily safely hold something that weighs that amount! Refer to the SAFE WORKING LOAD of a specific rope for more information.

IF IN DOUBT, ASK A PROFESSIONAL. We get calls all the time from people who have questions about what is the best rope to use for any given application. Don't be afraid to ask. Ultimately YOU are responsible for your safety using ANY rope, so don't chance it.

Knots & Splices:

Wherever possible, use splices constructed to safe specifications. A proper splice on a rope can maintain 80% to 100% of the new rope average break strength. Trained personnel should construct all splices. If knots are used on a rope, be aware that they can reduce the rope's strength by up to 50%. If knots are required, be sure to select the proper knot for the job.

Applying a Load to Rope:

When weight is applied to rope, various factors come into play. These factors dictate whether it is a dynamic load or a static load.

Dynamic Loads:
Impart varying amounts of weight on the rope, for example, a load that drops or a load that swings. This movement can greatly increase the force placed on a rope, in some cases 2 to 5 times the weight of the item. It is crucial that the correct type of rope is chosen for these applications.

Static Loads:
Impart a consistent weight on the rope, for example, a rope holding a single weighted item. Static loads can also be briefly subject to dynamic loads. Being aware of lifting or pulling factors is crucial to maintaining a safe working environment.

General Knot & Rope Terms

Bend: Joins two ropes or fishing lines, e.g., Sheet Bend, Alpine Butterfly Bend, Figure 8 Bend, Ashley Bend, Hunter’s Bend, Zeppelin Bend.
Bight: Made by folding a piece of rope so that the two parts lie alongside each other. When tied near the rope’s end, the parts will be the Tail lying beside the Standing End. A bight can be used to finish many knots – making them easy to untie by just pulling the tail. The term “Bight” does not imply a “Loop” and does not mean the same.
Bitter End: Derived from the “Bitts” – the stout metal posts used for attaching mooring ropes – it is applied to the tail end of a mooring line.
Breaking Strength: The theoretical strength of a rope – derived by averaging many tests of a rope tested under optimal conditions, i.e., when stretched slowly while wound many times round a smooth, large diameter drum. The theoretical breaking strength is rarely (if ever) achieved in practice despite claims made by enthusiastic knot proponents.
Dressing a Knot: Arranging the components of the knot to optimize security and/or strength.
Fake (or Flake) a Rope: Lay a rope out neatly on the deck in a Zig-Zag Pattern ready for easy use. Both Fake and Flake are in widespread use. People using Flake tend to reject Fake and vice-versa. History and literature support both names. “Flaking” a rope could have entered common use because of the generally accepted “Flaking” a sail.
Flake a Sail: Fold a sail back and forth in neat layers for storage. This prolongs the life of the sail and facilitates raising the sail later. (Photo used with permission of Michael Harpur from the Eoceanic website).
Frapping Turns: Additional turns added in another axis to bind a Lashing or a Sailmaker’s Whipping.
Hitch: Attaches a rope to something, e.g., a Hitching Post, dock pole, mooring buoy, anchor, or cleat. Such knots include the Rolling Hitch, Cleat Hitch, Buntline Hitch, Icicle Hitch, Distel Hitch, and Lighterman’s Hitch, and Midshipman’s Hitch.
Hollow Braid: A loosely woven single-braid rope which can be spliced using a Brummel or a Long Bury technique.
Kernmantle: A type of rope construction with a Kern (interior core) protected by a Mantle (woven exterior sheath) – a design that achieves abrasion resistance and strength.
Lay: The direction in which the strands of a rope twist. As the strands progress away from the viewer, if they rotate clockwise like a right hand thread, it is a Right Hand Lay or Z-Twist – typically used for most three-strand rope. Steel cables are usually laid with a Left Hand Lay or S-Twist – hence the term Cable Laid, which is used when rope has a Left Hand Lay. If you have become accustomed to splicing three-stranded rope, splicing a piece of cabled-laid rope feels very awkward.
Loop: Made when a rope forms a partial circle with the ends crossing each other.
Racking Turns: Lashing turns which pass between poles to bind against the pole better. They are used in Tripod Lashings.
Round Turn: Two passes of a rope round an object – to completely encircle it.
Slipped: A knot is Slipped when it is completed using a loop or loops. The best known example is the Bow, a slipped version of the Square Knot. Many of the knots described can be slipped. Using a loop makes them less secure – think of shoelaces – but they are released more easily.
Solid Braid: A tightly woven single-braid rope which cannot be spliced using a Brummel or a Long Bury technique.
Splice: A knot made using the strands of a rope rather than the whole rope – stronger than ordinary knots and intended to be permanent.
Standing End: The long end – the part not knotted. The standing part lies between the standing end and the knot.
Stopper Knot: A knot in the end of a rope – used to prevent fraying or to prevent the end passing through a hole.
Strands: The major components of a rope – three in a three-strand rope. Each “Strand” is made up of many separate fibers.
Tail: The short end – the part getting knotted – see Working End
Turn: One pass of the rope round or through an object.
Whipping: A binding knot used to prevent a rope’s end fraying.
Working End: The short end – the part doing the knotting.

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