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
We'll see you:
... at the NAB Radio Show
September 21 - 23 in Nashville!
Product News

We'll be showing our newest antennas:

Model 6822
Model 6020 LT
Model 6812C

... and our new 12-inch, 10 kW filter,
Model 2712-3A!

Also, check out our new
[award-winning; see below]
Versa2une field-tunable FM antenna!

... and our new Model 6025 log periodic antenna!

4/11/13 at NAB:
New Cool Stuff Award for our
Versa2une field-tunable FM antenna!

SBA logo

Shively Labs is Maine's Small [Business] 2012 Exporter of the Year!
More information ...

Our parent company, Howell Labs, was just named SBA's 2013 Region I Subcontractor!
More information ...

Shively Labs has won a techINK 2010 Innovation Award for our Graphical Power Meter system!
Innovation award logo
NAB logo
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
Combining digital & analog signals
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: 08/16/12
Webmaster: Al Friend
© copyright 2005-2012 Howell Laboratories, Inc.