Shively Labs FM Antennas and Accessories
Home About Shively FM Antennas FM Filters & Combiners IBOC HDRadio™ Coax Components Other Products & Services Technical Information Solving Customer Needs
Catch us at:
AFCEE Annual meeting, June 22-24 in NY City (Dale Ladner)
GABCON Georgia Association of Broadcasters, August 3-5 in Jekyll Island, GA (Dale Ladner)
Texas Association of Broadcasters, August 9-11 in Austin, TX (Jon Clark)
Tennessee Association of Broadcasters, August 15-16 in Murfreesboro, TN (Dale Ladner)
Alabama Broadcasters Association, August 18-21 in Hoover, AL (Dale Ladner)
AMITRA Congreso Internacional de Radiodifusion, August 24-27 in Acapulco, Mexico (Dale Ladner and Sean Edwards)

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Shively Labs is Maine's Small [Business] 2012 Exporter of the Year!
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Our parent company, Howell Labs, was just named SBA's 2013 Region I Subcontractor!
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Our Model 6020 antenna brings home the Radio World Coolstuff Award!

new"Shively trials new extended FM antenna in Brazil"

new"Shively’s new high power broadband on the air in South Dakota"

Paul Wescott obituary:"A damn good sense of direction, and a steady hand on the wheel, for over 30 years"

New technical bulletin: "Tips and Tricks to Make 222-G Work for You"

November-December 2011 Radio Guide article: "A Really Xtreme Build"

September-October 2011 Radio Guide article: "Shively Labs - Where FM Antennas Are Not Just a Sideline"

May-June 2008 Radio Guide article:
"Shively Labs Meets the Very Windy Mountain"

September 2007
Radio Guide articles:
"Shively Labs: Antennas That Work!" [279 kB]

"Shively 6014 Dual Hybrid Antenna Solves a Dilemma" [232 kB]

Archived articles

Technical Bulletins

Information of General Interest to the Broadcast Industry

  • Some bulletins are in Adobe® Acrobat® format. You'll need Acrobat Reader®, a free download from, to read them.
  • These materials are for your on-line use. Please note that some are copyrighted. Contact Shively for copying and distribution information.


new Tips and Tricks to Make 222-G Work for You
10 Options for implementing IBOC
Split-feeding balanced combiner systems
Sweeping your system before applying power
Spectral re-growth
(Reprinted from Radio World Engineering Extra, 4/4/07)


High-power testing suite
(Two white papers on high-power breakdown testing and two videos showing actual tests)
Short course on isolators and FM antennas
(As seen in Radio World Engineering Extra, April 6, 2005)
Reducing downward radiation
(Presentation for FCC & FAA Engineering Staff, February 1997)
Matching FM antenna patterns and coverage
(From 1987 NAB Engineering Conference Proceedings)
Comparison of mechanical vs. electrical beamtilt
Effects of altitude on power ratings
Gain of full-wave and half-wave-spaced arrays
A quick-reference chart.
Updated Sizing of de-icer control box and wiring

Filters and Combiners:

Basics of balanced combiners
Short course on isolators and FM antennas
(As seen in Radio World Engineering Extra, April 6, 2005)
Introduction to cross-coupling
(Technical Presentation for 2000 Broadcast Engineering Conference)
Combining digital & analog signals
Low-level digital combining for multi-station installations
Using the Shively Labs fine-matching transformer to optimize high-power digital injection
Split-feeding balanced combiner systems
Updated FM combining systems (523 kB including illustrations)
(NAB Handbook Chapter, 10th edition)

Coax and Components:

Standard coax cutback dimensions (138 kB)
Coax components specifications
Power rating vs. frequency for copper transmission line
Attenuation vs. frequency for copper transmission line
Effects of altitude on power ratings
Guidelines for installation of flex coax
Installing a flange on 5/8" flex coax

Last updated: 06/07/17
Webmaster: Al Friend
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