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
Shows
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!
Awards

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!
Articles

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

IBOC Options

(20 dB injection)


Option A: Single Station, Combined Digital/Analog Transmitter, Common Antenna



Option B: Single Station, Separate Analog and Digital Transmitters, Common Antenna, High-Level Combining



Option C: Single Station, Separate Analog and Digital Transmitters, Interleaved Antenna

Example: 6 kW ERP analog signal using 3-bay analog antenna and 2-bay digital antenna (no transmission line losses included):

Analog antenna input = 6,000 W (analog ERP) / 1.55 (analog gain) = 3,871 W
Analog return power = 3,871 W x 20 dB = 39 W
Digital antenna input = 60 W (digital ERP) / 0.99 (digital gain) = 61 W
Minimum isolator size required = 61 W + 39 W = 100 W.


Option D: Single Station, Separate Analog and Digital Transmitters, Separate Analog and Digital Antennas



Option E: Multiple Stations; Branched Combiner; Common Antenna



Option F: Multiple Stations; Branched Combiner; Separate Digital and Analog Antennas



Option G: Multiple Stations; Balanced Combiner; Combined Digital and Analog Input for Each Station



Option H: Multiple Stations; Balanced Combiner; Separate Digital and Analog Input per Station; Separate Digital and Analog Feeds to the Antenna; Single Antenna Input



Option I: Multiple Stations; Balanced Combiner; Separate Digital and Analog Input per Station; Separate Digital and Analog Feeds to the Antenna; Dual Antenna Inputs



Option J: Multiple Stations; Balanced Combiner; Split Transmission Lines to Feed Combined Digital and Analog Signals over Separate Transmission Lines



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Last updated: 01/06/2010
Webmaster: Al Friend
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