February 2018

  1. Petzl ASAP vs. ASAP Lock

    The Petzl ASAP Mobile Rope Grab and the Petzl ASAP Lock Mobile Rope Grab are some of the best devices available for working in a one or two rope system. This week our Gear Experts® have put together a comparison of the two rope grabs so that you can choose the right one to use on the job.

    What are they?


    Before we talk about the differences between the devices we should start by outlining what the devices are and their purpose in your gear setup. Both of these devices are mobile fall arresters that are designed to accompany you on a one or two rope system. They have been specifically designed to trail you up and down the rope to provide mobile fall arrest.

    What’s the difference?


    Both the ASAP and the ASAP Lock work similarly, however, they have been designed for two different purposes. Let’s take a moment to outline those differences.

    The ASAP Lock is ideal for any situation where wind may affect the rope. Mobile fall arresters are intended to follow you up and down the rope, but sometimes the wind can cause the device to slide down the rope while you are working. This can add unnecessary danger while on a job. To prevent this from happening the ASAP Lock has the ability to ‘lock’ in place and prevent the device from moving down the rope. When the ASAP Lock is ‘locked’ it will still move up the rope so you can ascend without having to unlock the device. To descend the rope, simply unlock the device and it will trail you down the rope.

    When putting the rope into the device the ASAP requires a carabiner to hold the rope in place – this is to ensure that the rope does not slip out of the device. To put the rope in the ASAP Lock simply pull the lever and slide the rope in.

    How do they work?


    Both devices work very similarly – with the exception of the locking feature. You place the rope in each device and they follow you up and down the rope. In the event of a fall each device locks onto the rope to stop your descent. To release the device from the rope after the fall arrest mechanism has been activated you push up and in on the device and move it up the rope a bit.

    Both devices also have a centrifugal force clutch. What this means is that if you are on an angled surface and start sliding these devices will catch you. The way this works is that as you speed up (from sliding down the angled surface) the device senses the amount of force being placed on the device and it locks in place which prevents you from falling.



    Both the ASAP and the ASAP Lock are designed to be used with absorbers. The purpose of the absorber is to reduce the amount of force put on a rope in the event of a fall. The ASAP’Sorber is available in two lengths – 20 cm (7.87 inches) and 40 cm (15.74 inches).

    All absorbers come with a tech notice that discuss how much the absorber will lengthen during a fall. This is important because you need to make sure that if you fall, the absorber will catch you before you hit the ground. Each device is different and the manufacturer’s specifications should be checked prior to using the device.

    Still not sure which device is right for you, or have more questions? Click here to speak with one of our Gear Experts®.

    Click here to view our full selection of Petzl Gear.

    Click here to view our full selection of Rope Grabs.

    Petzl ASAP vs. ASAP Lock Video


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  2. Rope Inspection 101

    Your rope is literally your lifeline when out on the jobsite. Because that rope is so critical it should be inspected every time you use it. In this weeks blog post our Gear Experts® are going to review some of the basics of rope inspection. Regardless of whether it’s a life safety rope (like a kernmantle rope) or a rope you’d use for lifting and rigging (like a double braid rope) inspection is extremely important.


    Rope Log

    Before we get into what to look for during an inspection, we’d like to take a moment to talk about keeping track of those inspections. You can keep track of your inspections, making your life much easier, by using a rope log. Many manufacturers include this with the rope. If you’ve lost track of yours, you can download one from our knowledge base for free. That’s right free!



    When inspecting a rope you need to check the entire length of the rope. The easiest way to do this is to pull it completely out of the container you store it in every time you get ready to use the rope. If your rope has any of the following problems, it should be removed from service.

    Glossy/Glazed: The first thing to look for is glossy or glazed areas in the length of the rope. This can be caused by heat damage or compression.

    Diameter: Next, you should look for inconsistent diameter. Look for flat areas, bumps, or lumps in the rope. This can be a sign of core or internal damage from overloading or shock loads.

    Discoloration: Discoloration can also be a sign of loss of strength. Ropes get dirty, but if the discoloration is from excess sun exposure or chemicals, the rope should be removed from service. Determining if discoloration is from dirt and grime or something more like sun exposure or chemicals is much easier if you regularly clean your rope with rope wash.

    Texture: Inconsistency in texture or stiffness can indicate dirt or grit has gotten embedded in the core of the rope. It can also be a sign of kinks or improper twisting during storage or use.

    Wear: Obviously any kind of burns, cuts, knicks, or excess wear on the sheath is also a sign that the rope needs to be removed from service.

    Falls: Another thing to note in your rope log is if any fall has been taken on the rope. For something like a 3-strand lifeline, if you take a fall hard enough to deploy a shockpack, many manufacturers recommend removing that rope from service.

    Refer to the ropes tech notice for more information on this.

    **The content of this blog is not intended to replace proper, in-depth training. Manufacturer’s instructions must also be followed and reviewed before any fall protection equipment is used.

    For more information on full in-depth training courses please click here.

    Have questions about rope or need help finding the rope you need? Click here to contact one of our Gear Experts®.

    Rope Inspection 101 Video


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  3. FieldSENSE 2.0 Personal RF Monitor

    There are many jobsite hazards that tower climbers experience every day. Our goal here at GME Supply is to make sure that we provide you with the tools and information you need to stay safe. One hazard that can sneak by, because it is invisible, is radio frequency (RF) waves. These invisible waves can wreak havoc on your body and health. But don’t worry; GME Supply’s got you covered. This week we are going to talk about the FieldSense 2.0 Personal RF Monitor.

    FieldSense 2.0 Personal RF Monitor


    This second generation RF monitor is the latest and greatest in RF protection. It has been specifically designed to protect you when you’re working around broadcast and telecom antennas. With a frequency range of 50 MHZ to 6 GHZ, you're covered no matter the situation. This is a huge upgrade from the previous model which measured from 380 MHZ to 2.7 GHZ. The 2.0 also measures both E and H fields to accurately assess the entire exposure situation.

    Packed with Features


    The FieldSENSE 2.0 has some really cool features. The data logging feature captures all of your measurements and records them on the device. Then, using a PC, a USB cable, and the free software provided by FieldSENSE you can access them later. The device is also isotropic which means it measures all radiation from all angles.

    It is designed to be worn on your body, and the unique attachment device makes it easy to secure on your harness, keeping it out of the way of your work, and your climbing. Another great feature is voice notes. You can actually speak into the device and record specific information like an antenna serial number or specific measurements. Then you can access them later for documentation.

    It also has a fall detection alarm, so when a fall occurs, it sounds an alarm. This is both to alert other climbers that the device is falling, or if you drop it off the tower, it makes it so it's easy to find on the ground. It is super rugged. In fact, it's made out of the same stuff that riot shields are made out of. And it’s weather resistant.

    The device is powered by two AAA batteries which are included. And it comes in a nice zipper case for easy transport and protection.



    The 2.0 RF Monitor is a highly technical machine that you rely on to be extremely accurate. Because of the need for this accuracy, the monitor needs to be calibrated by the date on the sticker located on the bottom of the device. The recalibration process is easy and ensures that your device is accurate so you can stay safe on the job. When a recalibration is required simply fill out this form and follow the instructions.

    Once we receive your device, we send it to the original manufacturer in Capetown, South Africa to be recalibrated. We immediately send you a recalibrated unit we have on site to replace the one you sent us, so you don't have to worry about long shipping times and can continue to be safe while on the job.

    Have a question about the FieldSENSE 2.0 or the recalibration process? Click here to speak with one of our Gear Experts®.


    FieldSENSE 2.0 Personal RF Monitor


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  4. Grounding with Cadweld: Regular vs. Plus Kits

    When it comes to grounding there is little room for error. The difference between a high quality weld and low quality weld can be the difference between life and death. This week we want to talk about Cadweld Grounding Kits and the benefits they can provide. Our Gear Experts® have put together the need to know differences between the regular and plus kits.


    Grounding with Cadweld


    You’ve got a job coming up where you are going to need to ground some cables and you’re looking for the best solution. Here at GME Supply, we’ve got a few different options that can get the job done. We have the Cadweld Plus Electronic Exothermic Welding Kit and the Regular Cadweld Exothermic Welding Kit. Each of these kits provides a range of molds, cleaning supplies, and weld metal shots.


    The Plus vs. The Regular


    Let’s start with a side by side comparison of the kits. As mentioned above each of the kits provides many of the same things. The big difference is how the units work together to create the weld and promote safety at the same time.


    The Shots


    The plus kit features convenient “k cups”. These shots of weld metal are prepackaged in a cup that fits nicely into the top of the mold. The best thing about these is that all you have to do is put it in the mold. You don’t have to open the cup or pour the weld metal into the mold, saving you time and materials. One shot equals one weld.






    The regular kit, on the other hand, features traditional shots of weld metal. These shots come in a plastic tube with a cap. You have to remove the cap and pour the weld metal into the mold. This can increase the amount of time spent doing this task in addition to the accidental waste of materials. Not only that, but sometimes one shot isn’t enough to get the weld metal to the top of the mold for ignition – which means you have to add more weld metal. One shot does not always equal one weld.



    The Igniter

    The plus kit features an electronic igniter. The electronic igniter attaches to the shot (k cup) on the little tab at the top of the cup. This ensures a solid connection. The igniter allows you to put a larger distance between you and the mold providing added safety. To use the igniter simply turn on the switch and your weld metal will ignite and weld your grounding connection.

    The regular kit features a flint igniter. This is your traditional igniter where you press a button to strike the flint and the sparks light the weld metal. With this igniter, you have to be extremely close to the mold which can increase risk on the job-site.


    Weld Quality

    The final comparison is weld quality. Because of the way the plus kit works there will be a higher weld quality. With the shot being contained in the k-cup you have a much higher chance of achieving 100% ignition. With the regular kit, on the other hand, the weld metal can get separated when being poured into the mold and reduce the amount of metal that is ignited.

    For more information about grounding with Cadweld Kits or if you need help choosing what is best for you click here to talk to one of our Gear Experts®.


    Exothermic Welding Kits from Cadweld


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