Difference between 277 single phase and 277/480 3 phase unit?

The difference is the step down transformer that provides the power for the internal circuitry. On the 277 single phase the transformer is 277 VAC to 24 VAC and you will note that its primary winding is connected to the top and middle poles on the contactor.

On the 277/480 three phase unit the transformer is 480VAC to 24VAC and the primary winding is connected to the top and bottom poles on the contactor.

Consult a professional and or your electric provider to determine what configuration is needed.

APS single phase and three phase wiring


The APS-C series systems are designed to turn on and off, as the weather requires heat to deal with snow or icing conditions. Although a thermostatic dry contact switch can be used to override the system on for temperature only, is not recommended since it will reduce the efficiency of the system. Running the heaters on cold days that do not have snowfall will not hurt anything but your budget.

If you must do so choose a thermostat with dry contacts that close when the temperature is below 40F and connect it to the override-on terminals of the EMC section of the Class 2 terminal block.


APS Snow Sensor Overide for temperature only
External contactors used with the APS-4C?

No, using external contactors will cause the GFEP circuit on the APS-4C to detect the inductive load of the contactors coil as ground fault and alarm the system every time the contactor is turned on. In order to increase the size of the application, a SC-40C satellite control can be used with the APS-4C without triggering the ground fault protection.

The APS-3C is designed without an internal GREP circuit so it will work with external contactors or direct heater loads. In both of these applications you must provide a GFEP breaker to power the heater circuit.


Flashing supply light.

A flashing supply light indicates a missing or broken High-Temperature Limit sensor. This sensor is required to make the APS-C series controller to work. It is required on all of the APS-C series controllers.

The sensor is not polarized and must be connected to pins 10 and 11. Refer to figure 22 in the manual. If the Class two terminals are black with screw connections problems can occur when the screws are over tightened.

sensor connections for flashing supply light
Delay between SC-40C and APS-4C?

Why is there a delay between when the APS-4C turns on and when the SC-40C comes on?

This delay between the APS-4C and the SC-40C is programmed into the system in order to reduce surge current. When the heaters are turned on they will have a large inrush of current for a few seconds. If all the heater circuits came on at the same time the inrush current could be large enough to trip the main breaker in supplying panel. This 5-second delay is meant to reduce this problem.

APS-4C connected to SC-40C

Snow light on SC-40C stays on longer than APS-4C

The snow light stays on longer for the SC-40C than the APS-4C because the APS-4C gets its command from an actual snow sensor where the SC-40C’s get their command from the APS-4C.

When the snow sensor’s moisture grid dries out, it no longer sends a snow present command to the APS-4C so it’s snow light goes out. However, the APS-4C remains on for the duration of the hold on time set on the front panel dial. While the hold on time continues the APS-4C continues to send a snow signal to the SC-40C’s and hold them on as well. When the hold on time is complete all of the controllers will turn off.

APS-4C, SC-40C connection for snow light
Is a snow sensor required for a SC-40C?

No, the SC-40C does not use a snow sensor, it is completely controlled by the attached APS-4C. However, the SC-40C does require the High-Temperature sensor Thermistor to be connected (or bypassed with a 470K-ohm resistor) in order for the unit to operate. The SC-40C only acts to extend the load capabilities allowing you to energize a larger heater area off a APS-4C unit.

SC-40C, APS-4C and snow sensor digram
Temperature sensor was not installed

The high limit temperature sensor is intended for two purposes, either as a slab sensor when the APS-C series unit is used for heating sidewalks, patios or drives or for ambient air temperature when the unit is used for roof and gutter melt systems.In roof and gutter applications the sensor is run outside the building and placed in a location that is out of direct sunlight and away from other heat sources such as air conditioners or

In roof and gutter applications the sensor is run outside the building and placed in a location that is out of direct sunlight and away from other heat sources such as air conditioners or vents.

In slab applications, this sensor is usually installed in conduit. If this was not provided for when the slab was poured then the alternative is to either use it as an ambient air sensor or bypass this function all together.

The High Temperature limit can be bypassed by installing a 470K-ohm resistor in place of the sensor on pins 10 & 11 Refer to figure 23 in the manual.

Can I simulate a sensor call for heat?

Yes, you can simulate a sensor call for heat to test the system by putting a jumper between pins 1 and 2 of the class two terminal blocks, the system will respond as if the sensor were seeing snow conditions. The snow and heat indicators will come on and relay or contactor will be pulled in.

How to simulate a sensor call for heat
Snow sensor not detecting snow outside?

There can be several reasons for this. First, start by checking the snow sensor supply voltage between pins 2 and 3 of the class two terminal blocks. It should be close to 24 VDC (the label on some unit incorrectly say 24VAC). If there is no voltage then check the fuse on the board behind the terminals.

If you have already simulated a sensor’s call for heat and the controller is not suspect then examine the wiring to the sensor, damaged wires can cause loss of signal from the sensor or power to the sensor.

Lastly, the snow sensors must see both a temperature below 38F and moisture on the moisture grid. High wind conditions can keep snow from accumulating on the moisture grid so consider how the weather is affecting the snow sensor. High accumulations can bury the sensor and allow the moisture sensors to melt a cave in the snow, which will not allow snow to touch the grid. This igloo effect will render the sensor inoperative. This effect can be reduced by the use of a moisture cup on GIT sensors and by placing CIT and LCD sensors at a slight angle to allow gravity to help remove excess snow.

Snow sensor diagnostics

Why do I have a red GFEP light on?
The GFEP indicator will come on when a ground fault occurs in one of the heater circuits. The insulating resistance of the heater cable is breaking down or the cable has been damaged allowing current to pass to ground thru an incorrect pathway. Left un-repaired the cable could cause a fire if it continues to be powered.

When a ground fault is detected the controller will not allow power to be applied to the heater circuits until the problem is corrected. You can isolate the offending heater by removing all the heaters and reinstalling them one at a time to discover the heater with the fault. An alternative to this method is to use a Meg-ohm tester and test each heater leg per the manufactures specifications.

You will need to contact the heater manufacturer for instructions on how to locate the problem and fix it. Most heaters can be repaired with repair kits or splice kits but the manufacturer will be able to provide the details.

How do I connect my SC-40C to my APS-4C?

APS-4C to SC-40C connections are done on the Class 2 terminal blocks on both units as follows.

APS-4C Pin SC-40C Pin Next SC-40C Pin

Connection from APS-4C to SC-40C
Connection from SC-40C to SC-40C
Why is the GFEP light flashing on my APS-4C?

This indicates that there is a ground fault on one of the attached SC-40C satellite controllers. The SC-40C that has the ground fault will have a solid red GFEP light and will not allow the heaters to be powered. Isolating the heater leg that has the ground fault is done in the same way as on the Isolating a ground fault on the APS-4C. If the light is flashing but there is no indication of a ground fault on the APS-40C then review the wiring of the communication wiring between the APS-4C and the SC-40C.

What is the EMC light for?

EMC stands for Energy Management Computer, which can be used to remotely monitor and control the APS-C series ice melt controllers.

These connections are made to the Class 2 connection terminal block on pins 14 through 22. The following diagram will aid in making these connections.

The EMC can use the override on and override off to turn the systems on and off and provides internal dry contacts for monitoring and alarms. For a complete description of how the EMC works refer to the manual page 18.

Energy Management Computer (EMC) Interface
The APS “C” Series interfaces with an EMC via relays. Inputs from the EMC include Override On, which causes heater operation, and Override Off, which inhibits heater operation. These functions are independent of weather conditions and the status of the Hold-On Timer. The interface provides five system status contact closures for the EMC including Supply, Snow, Heater, Alarm, and Temperature Limit.
Absent signals from the EMC, the APS Control Panel controls the heaters based on environmental conditions. Automatic snow melting control is the default condition of the system.
High Temperature Limit dial not turning unit on?
Why doesn’t adjusting the High Temperature Limit dial turn the unit on?

The High Temperature limit dial is used to set the maximum temperature that the unit will work at. When the High Temperature limit sensor detects a temperature higher than what is selected on the dial it overrides the system and shuts it off. This function can be used to further regulate slab temperatures in pavement applications and as a warm weather override when the system is used for roof and gutter melting applications.

High Limit Thermostat
The calibrated 40°F to 90°F (4°C to 32°C) high limit thermostat prevents excessive temperatures when using constant wattage and MI heaters. It also permits safe testing at outdoor temperatures too high for continuous heater operation. The temperature sensor is included and must be connected to the system for proper operation.
There are two DIP switch configurable operation modes for the high limit thermostat. The factory default operation mode uses the high limit thermostat as a slab temperature regulator, preventing heater operation at temperatures above the High Temperature Limit setting. The optional operating mode uses the high limit thermostat as an ambient air sensor, preventing heater operation at temperatures above the High Temperature Limit setting until the temperature drops back to within the set limits.
The details of operation in each mode are as follows:

Slab Regulating Thermostat Mode
• High temperature causes unit to turn off heaters, if running, and to ignore any call for heater operation from the panel, RCU, or EMC
• High temperature continues any hold-on cycle that was initiated before the high temperature condition. If the slab temperature drops within limits during the hold-on time, the heater will be turned back on
• In a high temperature condition, an APS will still initiate operation of connected SC–40C contactor(s)
• The Heater Cycle functions normally

Ambient Temperature Thermostat Mode
• High temperature causes the unit to turn off heaters, if running, and to ignore any call for heater operation from the panel, RCU, or EMC
• High temperature cancels any Hold-On cycle that was initiated before the high temperature condition
• In a high temperature condition, an APS will not initiate operation of connected SC–40C contactor(s)
• If the Heater Cycle switch is operated in a high temperature condition, the heater(s) will be turned on for a maximum of 30 seconds. A new Heater Cycle cannot be initiated for another two minutes after that.

September Is Sensor Placement Month At ETI



A great number of service calls come in with the common problem of the heaters not coming on even though it is snowing outside or there is ice buildup. After trouble- shooting the system it is discovered that the equipment is fine but there is no snow or ice on the sensor.


The proper placement of sensors is critical for the snowmelt system to operate. This is especially true if only one sensor is used, multiple sensors can be a little more forgiving for incorrect placement but to get the most out of the system it would be advisable to locate as many sensors in the “sweet spot” as possible.


The best person to determine the sweet spots for the sensors is the installer but to do so the installer needs to consider several parameters when considering the site and the final location of the sensor or sensors. These include but are not limited to:


          1.  Prevailing winds

          2.  Obstructions

          3.  Orientation of buildings and their affects on snow and drift patterns

Jeremy Crawford

Jeremy Crawford

Business Development Representative

(o): +1 574-999-1274

(m): +1 317-450-3200

1850 N Sheridan St
South Bend, IN 46628
+1 574-233-1202


Have a question you can’t find the answer to?  Just click the LETS CHAT bubble on any page and talk to a member of THE ETI CHAT BUNCH today.  

ETI IS HIRING – Shipping & Receiving Clerk


Positions Available

ETI is an equal opportunity employers. We offer competitive wages and great benefits.


Shipping & Receiving Clerk

For more information, or to apply for these positions, please contact ETI HR representative:

Pennie Ritter

Pennie Ritter

HR Manager

(o): +1 574-999-1204

(m): +1 317-519-5766


Snow & Ice Systems – APS-3C









QUESTION – Can I simulate a sensor call for heat to test the system?



ANSWER – Yes, by putting a jumper between pins 1 and 2 of the class two terminal blocks the system will respond as if the sensor were seeing snow conditions.  The snow and heat indicators will come on and relay or contactor will be pulled in.





Sales Associate

(O) +1 574-999-1226

 If you have any questions regarding any of our products please feel free to contact me any time at +1-574-999-1226 or email me at


Winter is right around the corner and now is the time to inspect your snow and ice melt system and preform any necessary maintenance. Routine inspection and basic maintenance will keep your snow and ice melt system functioning efficiently for years to come. We have created a list of steps to take to make sure your snow and ice melt system is ready to go.

8 Simple Steps For Winter

  4. ……….
  5. ……….
  6. ……….
  7. ……….
  8. ……….




Sales Associate

(O) +1 574-999-1226

 If you have any questions regarding any of our products please feel free to contact me any time at +1-574-999-1226 or email me at


(SOUTH BEND, IN) ETI is proud to announce the promotion of Nancy Watson to Customer Operations Team Lead, effective immediately.  ETI's Customer Operations Team will manage requests for quote, order entry, order status, technical questions, application questions, Data Sheet and Manual requests, assisting customers with questions regarding exporting, missing invoices and the availability of all ETI products.  Nancy will also oversee the ETI RMA department ensuring all requests are processed in a timely manor.  With the support of  ETI's large Team of experienced engineers and technical specialists, ETI's Customer Operations Team will have a complete library of ETI product data at their fingertips.

"ETI is very excited to have Nancy in charge of our Customer Operations Team," stated Patrick Bartell, ETI CSO.  "One of our key initiatives at ETI is customer service.  Being able to quickly and accurately handle incoming customer issues is key in ensuring the success of our customers.  Nancy's commitment to the customer has always been her strongest trait and we can now utilize her expertise as a mentor and leader to the entire Team."


"I am very happy and excited to accept my new responsibilities," stated Watson. "I am looking forward to assisting with the revamping of our Customer Operations so we can have an even better relationship with our customers."




ETI, based out of South Bend Indiana, has been a world leader in sensors and controls for snow and ice melt systems, heat trace, and microwave waveguide dehydration for over 50 years. ETI's engineering and production teams work with their customers to design and manufacture solutions to their problems with a focus on energy efficiency and dependability. ETI was founded in 1968 and began producing the first Snow Switch® sensing and control products for commercial deicing in the industry. Having been awarded numerous patents for technologies used in snow and ice detection, condensate and humidity control, ground fault and arc detection, energy management, power distribution, and air pressurization systems, ETI has grown into a trusted name worldwide for environmental sensors and controls.
For Additional Information ETI
Contact: Jeremy Crawford
Business Development Representative

o: +1 574-999-1274

1850 N. Sheridan St.
South Bend, IN 46628




Positions Available

ETI is an equal opportunity employers. We offer competitive wages and great benefits.


  1. Quality Manager

For more information, or to apply for these positions, please contact ETI HR representative:

Pennie Ritter

Pennie Ritter

HR Manager

(o): +1 574-999-1204

(m): +1 317-519-5766



Waveguide Automatic Air Dehydrator with Ethernet Communications

The ADH NETCOM automatic waveguide dehydrator supplies low pressure dry air to keep waveguide and coaxial cable dry. Output pressure is configurable between 0.10 psig and 7.50 psig (7mbar – 517mbar) in 0.01 psig (0.67mbar) increments. Factory default pressure is 0.5 psig (34.5mbar). Operational monitoring and alarms are software based making them highly configurable in the field. Future software features can be installed while in service over the internet or local Ethernet network.

  • Network-ready
  • Standard Front Panel Display


  • Provides dry pressurized air to ensure signal quality of antenna waveguide and dielectric coaxial cable
  • Highly configurable to meet the needs of wide ranging applications
  • Programmable operating pressure range: 0.10 psig – 7.50 psig (7mbar – 517mbar)
  • Brushless compressor for long life
  • Future-proof software based features allow updates and upgrades while in service
  • Remote monitoring and control with web interface or SNMP
  • Configurable Master/Slave operation
  • Ethernet, RS-422/485, RS-232 and alarm relay outputs for compatibility with nearly any system
  • Front panel display allows for IP configuration and status monitoring when no network is available
  • Simple power connections between 100 and 240 VAC, inclusive, or ±20-75 VDC
  • Small, light weight chassis with multiple mounting options makes installation easy
  • Low energy use minimizes operational costs
  • Quiet operation
Jeremy Crawford

Jeremy Crawford

Business Development Representative

If you have any questions or would like additional information regarding any of our NETCOM products, please reach out to me directly at 574-999-1274 or

(o): +1 574-999-1274

(m): +1 317-450-3200

1850 N Sheridan St
South Bend, IN 46628
+1 574-233-1202


From coast-to-coast and station-to-station, ETI’s line of products keeps the wheels of commerce rolling by holding Mother Nature’s worst at bay.


ETI’s Snow Switch line of Snow & Ice Melt Sensors and Controllers offer the most technically advanced thermal solutions in the industry.

Regardless of your industry, when precise heat-trace control is required, Tracon is the brand name preferred by leading systems designers and engineers around the globe.


Sales Associate

(O) +1 574-999-1226

 If you have any questions regarding any of our products please feel free to contact me any time at +1-574-999-1226 or email me at



Due to the high sensitivity of ground-fault-current detection circuits, it is possible that excessive line noise on the power source wiring can cause an alarm. This can occur in the form of a ground-fault alarm, a stuck-relay alarm, or a ground-fault circuit alarm.

This type of alarm can be caused by switching high-power loads, inductive loads, or any excessive arcing during operation of a contactor that is on the same circuit branch. It may also be caused by extreme levels of RFI (radio-frequency interference) in the area.



We recommend providing a separate circuit for the heat control, which is not shared with other equipment. In particular, any equipment that is electrically noisy needs to be on a different circuit branch and installed a safe distance away.



In some situations, the ground fault threshold can be increased, and this will improve the noise immunity. On the GPT 130 and GPT 230, the ground-fault alarm current threshold can be adjusted from 1 mA to 300 mA, and the default setting is 30 mA. A higher setting will be more tolerant of electrical noise on the power line.



Sales Associate

(O) +1 574-999-1226

 If you have any questions regarding any of our products please feel free to contact me any time at +1-574-999-1226 or email me at


Understanding the leak rates and duty cycles of dehydrators


The overall purpose of the dehydrator is to eliminate moisture in the waveguide of the transmitter. Moisture will affect the reflected energy and increase the Standing Wave Ratio (SWR) of the system.

Dehydrators deal with moisture in waveguides differently than systems pressurized with inert gasses.

In pressurized systems, the system is sealed, and moisture is kept out by the same seal that keeps the gas in. If the pressurized system develops a leak the inert gas leaks out and moisture can then accumulate in the system.  In most cases, these pressurized systems then need to be re-pressurized to find and repair the leak, then be evacuated with a vacuum pump, and refilled with the inert gas. This can become a long and expensive process.

In comparison, a dehydrator supplied waveguide is constantly having the air in the waveguide replaced with desiccated air and its pressure is varying from the low set point to the target set point. This delta P is the operating pressure for the system.

The operating pressure (∆P) is determined by the wave guide’s manufacturer’s recommended max pressure and the lowest pressure the customer is comfortable with as a minimum to the system. The max pressure is generally dictated by the feed horn window material.

In the NETCOM dehydrator it is possible to set the pressure parameters with four set points, these are:

  1. Low pressure alarm – this is the level at which the unit will present an alarm. This needs to be lower than the low limit pressure
  2. Low Limit Pressure – this is the level that will cause the dehydrator to start the compressor to pressurize the system. This must be at least .1 PSI lower than the High Limit Target Pressure
  3. High Limit Target Pressure – this is the level that the compressor will be turned off at.
  4. High pressure alarm – this is the level at which the unit will present an alarm. This needs to be higher than the High Limit Target Pressure

The difference between the Low Limit Pressure and the High Limit Target Pressure is the customer selected operating pressure (∆P).

Perfectly sealed systems are not only difficult to manufacture but impossible to maintain over time.  For this reason, ETI strives for perfect seals but accepts very small leaks in the system as normal.  Our maximum allowable leak rate on a new system is .04 psi per minute on a system pressurized at 7.5 PSI.  With a dehydrator’s outlet completely blocked off this would translate to a leak downtime of 2.5 hours or more if there is a ∆P of 6 PSI between the low limit pressure and the high limit target pressure.

It should be noted that the leak downtime is dependent on the ∆P.  For example, the same leak rate of .04 PSI will take 2.5 minutes when the ∆P is .1 PSI.

For this reason, it is important to understand the relationship between the ∆P, leak rate & duty cycle.  To do this also requires an understanding of how the duty cycle is calculated and what it means.

The duty cycle is calculated by averaging the time of two compression cycles using the time the compressor is on divided by total time (time compressor on and time off between cycles).  The on time is going to be affected by several variables, but the two most important variables are the volume of the waveguide and the flow rate of the compressor.

There is no hard and fast rule as to what duty cycle you should have on your dehydrator; it is entirely up to the customer to determine what is best for their application.  In doing so it should be considered that once set, a change in the duty cycle indicates a change in the system/ waveguide.  Setting the duty cycle alarm to approximately two times the selected duty cycle will allow the system to give the customer an alarm indicating a problem with the system.

Setting the duty cycle is accomplished by changing the waveguide bleed (normally mounted on or near the feed horn) to allow a constant managed leak of the system.

NETCOM compressors have a flow rate of 10 liters per min so for small systems (1l or less) you are looking at only a few seconds of compressor time for a complete fill and fractions of a second for satisfying the ∆P requirements for operating pressure.

For these reasons, it is possible to have a NETCOM pressurizing a small system with a very small ∆P that will run the compressor every 10 to 15 seconds for a period of a fraction of a second.  At first, this may appear to be an internal leak on the NETCOM but looking at the duty cycle and alarms you will be able to determine that the NETCOM is simply working normally at a 5% duty cycle.

It would be advisable to reduce the duty cycle to as low as 1% for small systems to increase the time between compression cycles. This will also allow the casual observer to feel the system is operating normally without internal leaks or issues.

Another way to accomplish this is, of course, to increase the ∆P on the system slightly if the system will allow it.  Again, the limiting factor is the feed horn window max pressure limitations.

As an example:


If a system is initially set to a 1% duty cycle and the duty cycle alarm is set for 2% and after several months of operation the duty cycle alarm is indicated the operator has several options.  He can start looking for the leak, find and fix it immediately or determine that the leak is small enough to not warrant immediate action because there has been no effect on the SWR of the system.  The dehydrator has compensated for the leak with increased duty cycle.  At this point, the operator may bump the duty cycle alarm up to 3%, report the issue and put it on the agenda for future maintenance on a remote site.

Comparing the above example to an inert gas pressurized system the leak would leave the system open to atmosphere and SWR would be affected necessitating an immediate repair.

Author Information:
Dave Mays
Engineering Technician-R&D
Jeremy Crawford

Jeremy Crawford

Business Development Representative

(o): +1 574-999-1274

(m): +1 317-450-3200

1850 N Sheridan St
South Bend, IN 46628
+1 574-233-1202

ETI Customers – PLEASE READ – Accounting Department Update

Dear Valued Customer:


As of June 1, 2020, ETI has implemented the below changes to our standard accounting procedures:


  • All ETI accounting requests will be sent from  or   **Please be aware we have experienced some customers seeing these in their SPAM folders.  Please allow emails from these senders.**
  • Effective 6/1 there is a 3% Credit Card transaction fee for any payments made w/Credit Card
  • Effective 6/1 there is a 1.5% monthly interest fee for any payments made past the invoice due date


Please forward all questions regarding these changes to 

We appreciate your prompt attention to this matter.

Thank you


Kayla Alexander

Kayla Alexander


(d): +1 574-999-1483
1850 N Sheridan St
South Bend, IN 46628
(o): +1 574-233-1202 




The GPT unit comes with a thermistor (two thermistors with the GPT 230) but is also compatible with a 3 wire RTD sensor. The diagram illustrates the correct wiring and DIP switch configuration for each temperature sensor wiring scheme. It is important that you also navigate to the Sensor Type screen and select the type of sensor being used. * The GPT comes set up for use with the provided Thermistor sensor.


The provided thermistor sensor will work for heating applications where the operating range is between -40°F and 230°F (-40°C and 110°C). For applications that require a larger temperature range an RTD sensor is needed. With an RTD sensor and the GPT 130 or GPT 230 you can accurately monitor and control for temperatures from -99.9°F to 999°F (-73.3°C to 537.7°C). Tank heating, water basin heaters, immersion heaters or any heat trace application.  For more information about installing a  3-wire RTD sensor or the provided thermistor consult the GPT 130 or GPT 230 manual or installation guide.



Sales Associate

(O) +1 574-999-1226

 If you have any questions regarding any of our products please feel free to contact me any time at +1-574-999-1226 or email me at




ETI is excited to introduce Sean Curran as our new Parts & Service Specialist.  This is a newly created position at ETI that will enhance our customers over all experience.  Sean’s new role will be to provide first line response to customer requirements for parts, service and returns.  Since coming onboard with ETI, Sean has gathered a wealth of knowledge from working directly with our seasoned Engineering Team, coupling that with his years of customer service experience makes him the perfect fit for this new role.


Sean has been working at ETI as our Customer Service Assistant for the past eight months and has over 6 years of customer service experience.  “At ETI we look for the best candidates to provide the highest level of productivity and skill required and Sean is one of the best.  Our goal is to continue to enhance the customer experience after the purchase of our globally recognized products and we are very excited to have Sean in this new position”, said Ben Crawford, President and CEO.

*Please note, all returns must be submitted using the ETI RETURN MERCHANDISE AUTHORIZATION (RMA) REQUEST FORM located on our website.  Please do not send request directly to your ETI Sales contact. 


A question for you: – Is your company 5G ready?

Civilization is constantly modernizing its network infrastructures to keep up with the growing demands for the creation and exchange of data while simultaneously reducing global latency. In other words, we, as people, are constantly developing and implementing new network systems, allowing us to communicate faster, and from remote places on Earth. 5G is the next generation of network systems. Claiming to increase the speed of some network types by a factor of over 100, 5G will either supplement or obsolete 4G and LTE networks globally. 5G is being rolled out today, right now. More cell phone towers will provide coverage to the entire world. The fact is, LTE is struggling to keep up, and is experiencing more slowdowns than ever before due to our demand for instant information.

Companies like Verizon, AT&T, and T-Mobile, as well as many other well-known players in the communications industry are already designing 5G modems capable of fitting in your ear, your car, or even in your refrigerator door. To build these systems, and allow them to communicate efficiently, a careful planning process should always be followed in network infrastructure design.

ETI’s Netcom Automatic Waveguide Dehydrators keep dry pressurized air in waveguides so the system is not compromised from outside environmental factors. In other words, we keep complex communications systems operating during rain, snow, and humidity. With many communications companies expanding aggressively into these harsh weather markets, Automatic Waveguide Dehydrators are at an all-time high.

5G networks utilize high-frequency waves that warrant faster connectivity speeds – yet they do not travel as far as their 4G and LTE predecessors. To solve this distance issue, 5G network systems must be built based upon a matrix of smaller more compact cell phone towers that must be closer to each other and the end user than ever before. As a result, network providers plan to build 300,000 new antenna towers. That equates to more towers than have been built in the last 30 years.

Jeremy Crawford

Jeremy Crawford

Business Development Officer

If you have any questions or would like additional information regarding any of our NETCOM products, please reach out to the ETI Sales Team at  or contact me directly at 574-999-1274 or  .


The ETI Netcom line of Waveguide Dehydrators provides cost-effective positive pressure dry air that prevents moisture vapor from entering your waveguide eco-system. Netcom offers a number of dehydration solutions that automatically controls waveguide humidity which improves transmission reliability by protecting against reflection.


  • Simple to install and operate
  • Low energy usage
  • Extremely quiet operation
  • Convenient access to replace desiccant



Business Development Representative

O:  +1-574-999-1274

M:  +1-317-450-3200 



For over 40 years the SNOW SWITCH CIT 1 aerial sensor has been the most reliable go to snow sensor in the world.  Combining several technologies, the original inventors were integral in creating the aerial snow sensor market. Billions of cubic feet of snow have been prevented from building up, and countless millions of dollars in injury and facility damage have been avoided.  The CIT 1 has been a solid performer for decades.

As the ownership of ETI began investing into our products and manufacturing capability, many products and processes have been revised.  Through the process of evaluating customer feedback and data collected as a result of product returned, we learned that we needed to take a closer look at the CIT-1. Due to these findings we decided to improve the CIT 1 and develop a new sensor, the SNOW OWL.

For more information on the SNOW OWL download our white paper or visit . 



Get To Know ETI’s Snow Owl – WHITE PAPER


ETI FAB Is Hiring


Position Available

ETI FAB are equal opportunity employers. We offer competitive wages and great benefits.


  1. Welding Fabricator

For more information, or to apply for this positions, please contact ETI Fab HR representative, here:


HR Manager

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