Shively Labs FM Antennas and Accessories
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2712 Bandpass Filter

2712

Small footprint, up tp 15kW with blowers


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Catch us at:
Alabama Broadcasters' Convention November 27-29
Our Dale Ladner will be presenting a seminar on Care and Feeding of FM Antenna Systems!

Handy Calculators for RF Engineers

Calculators are Microsoft Excel spreadsheets.
These materials are for your on-line use. Please note that some are copyrighted. Contact Shively for copying and distribution information.
IBOC Injection Analysis
For high-level (non-coherent) and mid-level (coherent) IBOC injection.
  • The calculator for high-level (non-coherent) IBOC injection is used to analyze the combining of a single digital transmitter and a single analog transmitter for broadcast over a common antenna. By adjusting the “Analog Output” (amount of analog power being sent up the transmission line) and “Coupler” values, it is possible to get a complete overview of the entire power budget of the transmission system (with the exception of line losses). This makes it possible to determine the most cost effective coupling solution.
  • The calculator of mid-level (coherent) IBOC injection is used to analyze the combining of an existing analog transmitter and a new, combined analog/digital transmitter for broadcast over a common antenna. “Total Analog Output” is the total analog power of the combined transmitters that is being sent up the transmission line.


Dissipated Power and Heat Generated in a Filter
If you know your transmitter power and your insertion loss in dB ...

Last updated: 11/07/2006
Webmaster: Al Friend
© copyright 2006 Howell Laboratories, Inc.