Translator Questions and Answers
What is a translator & why do we need one?
Translators are low power transmitters designed to cover a small area such as a town or city. They can range
from 10 watts to 250 watts. Through a special antenna, the signal of a radio station is "translated" from its
original frequency (107.3 MHz for instance) to another frequency (101.5 MHz), on which the station is re-broadcast.
Because some communities are a great distance from the station signal area, multiple translators are
sometimes used to "leap frog" the signal across the terrain. A translator system will provide a crystal-clear
reception on another frequency in a new community.
Why doesn't the radio station just put a translator in our area?
A commercial radio station is not allowed, by law, to initiate, finance, construct or otherwise be involved in the
construction of a translator, outside of its 70 dbu signal (about 40 miles from its transmitter in the case of a
100,000 watt station). These translators must be financed and maintained by a local individual, organization or
institution. Stations are allowed to give some very limited input.
What is the cost of putting on a translator?
The cost of putting a translator on the air is between $5,000 and $10,000, depending on the type of antenna
and transmitter needed. The cost of operating a translator after initial equipment purchase and construction, is
minimal ($10 to $40 per month). There may be other costs, such as tower lease, if needed.
What do we need to do to get a Translator?
After you decide that your group would like to have a translator, the next step is to determine if a frequency is
available. To do this you must select an antenna site. You will need the coordinates of that site (longitude and
latitude). An engineer will then determine from those coordinates whether or not a frequency is available, by
conducting a frequency search. If a frequency is available, he can then complete an application to the Federal
Communications Commission for a license to construct a FM translator. Sterling Communications
has been doing this type of work since 1979, and has been directly involved in
establishing hundreds of radio stations, and translators.
What do we look for in an antenna site?
Since the FM signal works by "line of sight," you will need a site that provides an unobstructed view of the area
to be covered. Tall buildings, hills, bluffs, etc. can obstruct the signal. You'll need a site that shoots the signal
over obstructions. In some cases, the roof of a building or a church steeple can be utilized. You'll need about 20'
or more of vertical space for the antennae (there are two or more per translator: receiving and
sending antennae). If there is a tower with space available for the antennae, find the owner to inquire about available space
Do we need a building constructed to house the translator?
Translators are not very large, about the size of a bread box. They can be housed in a closet or on a shelf, etc.
They do need to be located near the antenna, however, as they are connected to it by a cable.
Who owns the translator?
You or your group holds the license. Our radio station gives you permission to
rebroadcast our signal.
How long does it take to get a translator on the air?
It currently takes about 3-4 months for the application to be processed by the FCC. The engineer you select
can advise you on the construction time table.
What if we have other questions?
Questions of a technical nature may be addressed by Sterling, or your local engineer. Questions regarding the
operation, programming or philosophy of our radio station may be answered by contacting the station.
* This publication is reprinted by permission of the author, Donald C.
Lambert, General Manager of KSLT, in Spearfish, SD for the use of Sterling Communications, Inc. KSLT is a 100,000 watt station which
operates on 14 translators.