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DETUNING SYSTEMS
The solution to AM Antenna pattern Distortion
If your AM station coverage area has been affected by:
- Communication Towers
- Power Lines
- Tanks or Smokestacks
- Bridges or Structures
- New Building Construction
FERROLINEAR DEVICES
Ferroliner RF chokes can be used to detune wooden poles without
the need for a complete detuning skirt.
- Detuning skirt not necessary
- Fully blocks RF flow without affecting DC or 60Hz
- Fast, easy installation
- Completely weatherproof
Read more about the Ferrolinear RF Choke
WE CAN FIX IT FOR YOU!
Re-radiation of your AM signal by metal objects can distort your
coverage pattern. This re-radation can be eliminated by detuning the
structure to make it virtually disappear from your station's signal.
In some cases such as cellular telephone towers, the owners of the
offending structure must pay the expense of detuning.
In 1994, and again in 1997, the Federal Communications Commission
adopted rules concerning the protection of AM broadcast stations
from new structures erected nearby. 47 CFR Section 22.371 applies to
the Public Mobile Radio Service and 47 CFR Section 73.1692 applies
to applicants in the broadcast service. Technically, the latter
section was established for the broadcast services only, but
adherence to these conditions by licensees and permittees will
prevent disruption of services to the operation of an AM station. It
will also avoid costly litigation.
The costs of measurements and installation of
detuning apparatus, if needed, are borne by the owners of the new
structure. For a copy of thes FCC rules, a letter discussing their
policies and a summary of requirements, please call or write to Nott
Ltd.
These requirements have stimulated the growth and development of
detuning technology. Virtually anything that parasitically
reradiates can be detuned, restoring the AM pattern back to normal.
If the coverage of an AM broadcast station has been affected by the
construction of any new structure nearby, it may be returned to
normal by detuning the structure(s). Nott Ltd Detuning Systems
are designed to be completely rustproof
for many years of troublefree service!
Quotes and Information
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