Chandler, Indiana – March 29, 2023 – At the 2023 NAB Show Centennial in Las Vegas, ERI will introduce a new UHF Television Bandpass Filter with improved insertion loss and a unique forced air cooling system. The UF1500B is rated for 1.5 kW average power at the filter output and is convection cooled. The Model UF5000B adds forced air cooling, increasing the power handling capability to 5.0 kW. The unique targeted forced air-cooling system employed utilizes distributed finned heat sinks with individual cooling fans to target those locations that generate the most heat, based on laboratory testing. The system provides better heat removal using lower volumes of targeted airflow and has the benefits of less ambient noise and lower power consumption than traditional forced air-cooling methods.
The filters have lightweight Aluminum construction and copper resonators, and no finger stock is used. Instead, a mechanical clamping and copper collar firmly hold the resonator at its proper setting. The filter is temperature compensated using an Invar stabilized copper bellows, which is part of the resonator assembly. Multiple cross-couplings are provided to increase the rejection of transmitter out-of-band emissions. Six and eight-pole designs are available for 8-VSB and COFDM applications and are listed below. Input and output connections are unflanged: 1-5/8, 3-1/8, or 4-1/16-inch.
About Electronics Research, Inc.
For 80 years, ERI has served the broadcast industry with products and services of the highest quality and dependability. Our dedicated staff of engineers, designers, fabricators, project managers, and installers deliver products to meet all of your broadcast transmission system needs, both RF and structural. We take pride in contributing to your success by offering the best broadcast antennas, filters and combiners, transmission line, and towers.
For More Information Contact:
Bill Harland
Electronics Research, Inc.
Tel: (812) 925-6000×214
Fax: (812) 925-4030
Email: bharland@eriinc.com
Online: www.eriinc.com
Chandler, Indiana – March 6, 2023 – Electronics Research will show new motorized coaxial RF switches designed for VHF and UHF applications. ERI will also offer a new motorized switch controller. The four models include the 1-5/8-inch Model CS203C switch, the Model CS350C for 3-1/8-inch requirements, the 4-1/16-inch Model CS400C, and the Model CS600C for 6-1/8-inch applications. These coaxial switches are broadband and suitable for applications from 500 kHz to 608 MHz and do not need to be tuned to a specific channel. The coaxial port configuration is a coplanar design that minimizes the elbows required in most installation configurations. The control interface and interlock connections are made with CAT5 or CAT6 cables and RJ45 connectors.
For more information, contact ERI at +1 (812) 925-6000 or sales@eriinc.com. 
An ERI twelve-bay diplexed ROTOTILLER® FM antenna transmits WEOW (FM) and WAIL (FM), both Class C1 FMs with a 100 kW ERP. The antenna has a branch feed system to improve the system bandwidth. The 12-bay array combines two six-bay center-fed arrays into a single input. The antenna is designed so that co-owned WCNK (FM), 98.7 MHz, and WWUS (FM), 104.1 MHz, could also operate from this antenna. The FM channel combiner feeding the antenna is an FM junction combiner consisting of two ERI 783 FM bandpass filters. The tower was also designed and manufactured by ERI. It is a 57-inch face 600-foot structure manufactured and installed by ERI in 2012—photo courtesy of Mike Fitzpatrick. More great photos are found 
Las Vegas, Nevada – April 26, 2022 – Electronics Research, Inc. has promoted Peggy Hunt to the position of Vice President, US Sales. She is responsible for leading and managing ERI’s radio and television sales teams for all ERI products and services in the United States. Ms. Hunt has twenty-six (26) years of experience, holding most of which have been in Customer Service, Project Management, and, most recently, as Radio Accounts Manager for the Western US.
Chandler, Indiana – April 20, 2022 – Electronics Research, Inc. has three new hybrid couplers for high-band VHF television applications. ERI’s HY0245, HY246, and HY247 high band VHF hybrid couplers are plate-coupled quadrature designs that provide 3.0-dB, 3.98-dB, and 4.77-dB coupling levels, respectively. The hybrids are broadband from 174 to 240 MHz. The hybrid is most often used as a power combiner and also can be used as a power divider. All standard models are “cross-over” designs with the inputs, when used as a combiner, are on one side of the hybrid and the load port and combined output are on the opposite side. The input port opposite the combined output lags the other input by 90 degrees. The hybrid is available with any combination of 1-5/8-inch, 3-1/8-inch, 4-1/16-inch, and 6-1/8-inch flanged fixed male ports (order flange hardware separately). They are lightweight aluminum and compact with only 15.80-inches (401-mm) flange to flange spacing. Power handling is dependent on flange selection.