Rob Macedo-KD1CY writes:
Cape Cod ARES will conduct their summer exercise on Saturday August 10th, 2019 from 1000 AM-1200 PM. The exercise will be led by Cape Cod ARES District Emergency Coordinator, WQ1O-Frank O’Laughlin. All are welcome to participate. The Cape Cod ARES Exercise document can be seen at the following link:
Rob Macedo-KD1CY writes:
Mark Pride, K1RX, writes on the YCCC Reflector:
To all Tower owners in the Amateur Radio Community – a must read! By Mark Pride, K1RX
Many old timers in the hobby that own a tower, perhaps in the air for 20, 30, 40 or 50 years, need to take this article seriously as it could provide life saving information to you and your ground crew. This is a cautionary article for all that have a tower no matter how long its been the air. What occurred at a NH amateur station recently provides a lesson for all of us tower owners. Although the article speaks to a Rohn 25 guyed tower product, it could be prove helpful to others.
K1JGA and K1EEE tower tragedy
A crew of amateurs gathered at the home of K1EEE to take down two 40 ft. Rohn 25 towers. The details of the tower which collapsed and its failure is provided below. It was a very unfortunate accident which took the life of Joe G. Areyzaga, K1JGA. The owner of the tower, K1EEE suffered multiple injuries but did survive. We all in the amateur radio community extend our prayers and condolences to the families affected by this tragic event.
One of two forty foot (40 ft.) Rohn 25 towers, with one set of guys at the 35 ft level was to be taken down. The base was the BPH 25 hinge plate on a concrete pad of unknown depth. This used tower had only been up 3 years.
NOTE: Following the accident, the owner learned one leg of the hinge plate had been previously repaired but the material used was not galvanized.
With the reasonable expectation the tower would support itself to 40 ft, the guy wires were disconnected from the anchors and the top section was to be removed. The top section to be removed had a rotor shelf and one torque assembly mounted at the 35 ft. level along with the three guy wires. The gin pole had not been raised at that point. The antenna, mast and rotor were previously removed.
At the time of the initial install, the tower was self supported to 40 ft until the first set of guys were attached per Rohn specifications. That may have been the case then, but after many years of exposure to the elements, one can no longer expect the same!
Prior to the start of the tower take down, the tower was thoroughly inspected and found to be in acceptable condition. The base was dry and free of any water. No obvious problems were found.
The general reason for this tower collapse was corrosion at the junction of the hinged base short legs (one leg previously repaired and welded as noted above) and the bottom of the lowest Rohn 25 section occurred primarily from the outside and some inside as well and thus weakened the structure. The first point of failure was the repaired and non-galvanized short leg of the hinge plate. When the guys were removed from their anchor points (necessary to remove the top section), the tower was free standing with the two climbers at 35 ft. It’s clear that the tower deflection from the vertical was extreme enough to make the overturning force at the base (the bending moment) great enough to cause base failure.
The proper installation of the hinge bracket (BPH 25) requires mounting it on a flat concrete surface, secured with bolts placed in the concrete, surrounded by a beveled edge for water run off. Normally, all of the hardware associated with the hinge plate are galvanized and able to withstand the wear and tear of Mother nature. However this base was slightly recessed where the plate sat and there were some gaps under the plate. This created the opportunity for water or ground contaminants to collect. It is presumed the previously repaired short stubby leg of the bracket began to corrode while sitting in water. Years of this kind of exposure slowly weakened the metal. Subsequent movement by climbers at the top of the unguyed tower led to breakage at the base.
NOTE: Rohn towers are very high quality and generally last many, many years with proper installation and maintenance. It is a very popular tower in the amateur radio community. And where tower sections join, they typically show little wear as water drainage occurs easily and there is a limited chance for collecting contaminants and held for long periods of time. Or where tower materials come in contact with the earth, the normal galvanizing process is more than adequate for a long lifetime. But what is noted here is areas that are in contact with the ground or areas such as the repaired leg of the bracket that can accumulate harmful materials and therefore become a danger over time. Clearly there are areas on a tower that are difficult to inspect however, the Rohn design usually lends itself to high levels of confidence that these blind areas are within acceptable standards if installed per the manufacturers specifications.
JGA Safety Guy Technique for Tower Take Downs in honor Joseph G. Areyzaga, K1JGA (SK)
When dealing with unknown tower installations that require removal, it is absolutely critical to err on the side of extreme caution. The technique described below is one approach and a simple one to help safe guard all involved.
A suggested safety procedure that should be applied during any tower take down of this type is attaching a set of additional guy wires at either the 10 or 20 ft. level prior to any work on the tower. By applying a set of guys near the base, further stabilization of the tower base can be achieved. Using this added set of guy wires reduce stress on the legs (twisting, flexing, bending) and prevent breakage at the very bottom of the section just above the concrete surface or surrounding areas. Then what would remain after the tower is taken down to the Safety Guy set becomes very manageable (10 or 20 ft. to be lowered to the ground).
And in honor of our friend and now silent key, Joe, K1JGA, I am naming this important safety procedure the “JGA Safety Guy Technique” with the hopes all of us will not forget Joe but more importantly, keep us all safe while our old towers are taken down. In particular, towers that have been up for our entire ham career and its maintenance history may be questionable require special attention. Of course if the base shows significant deterioration, corrosion and breakage, the tower should NOT be climbed! It should be removed by other means (cut down if the landing area is open and clear or by crane or similar).
The suggested collection of material that comprises the JGA Safety Guy Technique include:
Three (3) lengths of unbroken or spliced guy wire (3/16 inch EHS or larger) longer than the lowest guy to be sure it is long enough (DO NOT USE ROPE!);
Guy Grips for each end of the guy wire;
A come along at each guy anchor point for proper tensioning and;
A reliable heavy duty attachment device to connect to the existing anchor.
The attachment to the guy anchors should be done in a way that does not interfere with the existing guy anchor assembly (turnbuckles, etc.). If the JGA Safety Guy kit is to be used in multiple tower take downs of varying heights, use of the Guy Grips will allow full flexibility of locating the attach points where they are needed, without cutting cable. Just make the cable length longer than you might need to give you enough head room. One further consideration: Rather than just use this technique near the ground, consider always using it no less than 10 ft. below where you may be working I.E. erecting or dismantling a tower, place the JGA kit 10 ft. below the location you are either installing or removing the next section. Therefore, the guy lengths need to be approximately the same length as the longest guy (upper guy). This will assure maximum safety. With the guy grips, it is easy to relocate them, as you adjust the length of the temporary guy at each point on the tower.
As part of your annual maintenance plan, include keeping the base free of debris, dirt, trees, plants etc. to protect this area from any long term damage. Consider making one of these JGA Safety Guy kits for your club to be used as necessary.
Best to use the JGA Safety Guy Technique and find the tower base was just fine, than not use it and suffer a similar situation or worse! Stay safe!
NTS traffic handlers converged at the home of Eastern MA Section Traffic Manager KW1U for the Eastern MA Traffic Handler’s Picnic on August 4, 2019 in Concord, MA. Twenty-five individuals–including regular traffic handlers and net control stations, three Section Managers, and the New England Division Director–were in attendance. Doc, KE1ML, describes the event.
Barstow is Senior Education Manager for the International Space Station National Lab. In this role, he supports large-scale use of the ISS by students, teachers and the public. He does this work through the Center for Advancement of Science in Space (CASIS) and the Space Station Explorers program. Dan has a long-term interest in ham radio and its space connections. Through Space Station Explorers, he supports the Amateur Radio on the ISS (ARISS) program to connect students with astronauts, and has developed software to facilitate direct ham radio communications through the ISS.
For banquet tickets and more information, visit https://hamxposition.org/grand-banquet.
Cape Cod, Massachusetts, ARES, and SKYWARN Amateur Radio volunteers were promptly pressed into action as a storm system on July 23 produced severe thunderstorms that spawned three tornadoes over the Cape. Hurricane-force wind also resulted in significant tree and utility wire damage across Cape Cod, with particularly hard-hit communities including Hyannis, Yarmouth, and Chatham. Some pockets of wind damage also occurred in the northwest corner of Martha’s Vineyard.
Amateur Radio SKYWARN spotters were the first to provide critical ground truth information regarding the significant wind damage and tornadoes across Cape Cod. Under the direction of Cape Cod District Emergency Coordinator Frank O’Laughlin, WQ1O, and Eastern Massachusetts Section Emergency Coordinator Rob Macedo, KD1CY, a SKYWARN net ran for several hour on a Barnstable, Massachusetts, VHF repeater. Numerous damage reports were received during the net and for a couple hours after the storm had passed. [Full story]
The August, 2019, Section Newsletter is now available at https://ema.arrl.org/august-2019-section-news/.
A tower dismantling turned tragic on Saturday, July 27, in Deerfield, New Hampshire, when two radio amateurs working some 40 feet up on the tower were carried to the ground when the structure collapsed. Joseph Areyzaga, K1JGA, 52, of Goffstown, New Hampshire, did not survive his injuries sustained in the fall, while the tower’s owner, Michael Rancourt, K1EEE, 65, was seriously injured and remains hospitalized. Rancourt was taking down the tower in preparation for selling his house, and the pair had nearly completed their work. They were tied into the tower and went down with it as it collapsed. [Full story]
WBZ/ CBS Boston reported House and Senate Democrats “failed to reach a compromise on long-discussed distracted driving legislation after a marathon session Wednesday [July 31, 2019], abandoning the issue about four hours after Senate President Karen Spilka said a resolution appeared imminent.”
In its current form, the legislation–also known as the “handheld cellphone ban”–would exempt “federally-licensed 2-way radios” allowing for the unimpeded use of amateur radios in vehicles.[See also: Massachusetts Hands-free Mobile Device Legislation Update]
Both branches held sessions open from Wednesday afternoon until after 12 a.m. Thursday in what was expected to be the last day before a traditional August recess.[Full story]
Since we do not have a Net Control Volunteer for the upcoming August Net, the South Shore Health Amateur Radio Group – W1SSH will once again act as Net Control.
The net will commence at the usual time of 10:00 AM using the following repeaters and simplex frequency in the order listed.
Please note: The simplex frequency for this month’s net has changed. Because we will be using the frequency in simplex mode, without tone, if it is not already programmed into your radio, the frequency can easily be entered into your radios “VFO” channel without the need for regular channel programming.
1. Sharon 146.865 tone 103.5
2. Bridgewater 147.180 tone 67.0
3. Norwood 147.210 tone 100.00
4. Simplex 146.580 MHz
The Net will then return to the Sharon Repeater for any final comments and Net closing.
NET Protocol: Please wait for Net Control to ask for Check-ins. When asked to check in please use the standard net check-in procedure which is: Here is.., un-key, wait 3 seconds to check for doubling, then give your or your facilities call sign, your first name, and your facility’s name.
We extend an invitation to any health care facility or EOC of any city or town that is served by one of the participating hospitals to join the Net. We also extend an invitation to any RACES or ARES member to check in during the NET.
We are always seeking groups or organizations to try their hand at Net Control duties. If you are interested in joining the group please let us know. We can be reached by sending an email to firstname.lastname@example.org. The goal is to rotate Net Control practice and the experience among as many individuals and groups as possible.
We thank the repeater trustees for their generosity in allowing us to conduct the monthly nets and the use of their systems in an actual event. The following list of repeaters is available for our use. Only a few systems are used each month with the selection of those used made by Net Control for that month. More systems are being added to the list on a regular basis.
Attleboro 147.195 tone 127.3 (Sturdy Memorial Hospital)
Belmont 145.430 tone 146.2
Boston 145.230 tone encode 88.5 tone decode 100.0
Bridgewater 147.180 tone 67.0
Danvers 145.47 tone 136.5
Dartmouth 147.000 tone 67.0
Fall River 146.805. tone 67.0
Falmouth 147.375 tone 110.9
Mansfield EMA 446.925 tone 100.0
Mansfield 147.015 tone 67.0
Marshfield 145.390 tone 67.0
Norwood 147.210 tone 100.00
Plymouth 146.685 tone 131.8
Salem 146.88 tone 118.8
Sharon 146.865 tone 103.5
Weymouth 147.345 tone 110.9 (South Shore Hospital)
W. Bridgewater 146.775 dcs 244
Wrentham 147.09 tone 146.2
We look forward to hearing you all on the Net.
John O’Neill – K1JRO
President – SSHARG
ARES – DEC – Hospital Liaison
South Shore Health Amateur Radio Group – W1SSH
55 Fogg Road, Box 42
South Weymouth, MA 02190