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72 MHz Antenna Selection Guide
BEST PRACTICES FOR ANTENNA SELECTION AND MOUNTING
ANT 005
Dipole RG-59 coaxial cable antenna. 80 inch active
antenna with a total cable length of 22 ft. Used in venues
where the antenna is to be installed away from the
Transmitter; i.e. Transmitter is in a rack and the antenna
needs to be mounted in another room. The ANT 005
can be used outdoors where we recommend the antenna
section be sealed in PVC piping, (see ANT 005 Outdoor
Distance
from Ceiling
to Active
80”
Part of the
Antenna
Mounting, next page). Our most ecient FM antenna for
optimal range. Designed for use with 72MHz – 76MHz
transmitters.
Use with T55, T45, or T27 transmitters.
Active Part
of the
80”
Antenna
© 2019, Williams AV, LLC TCH 001D
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80"
TRANSMITTER
ANT 005 COAX ANTENNA
A297
PVC PIPE CAP. PRESSURE FIT.
DO NOT GLUE CAP ON.
EMPTY PROTECTIVE EXPANDO
(END OF ANT 005)
1/2" - 1" I.D. PVC
MOUNTING DEVICE
(WALL, BRACKET, POST)
When the ANT 005 coax cable is mounted outdoors, the
following steps need to taken to avoid damage to system
electrical equipment.
1. Insert Coax cable INSIDE the PVC tube.
2. The last 8 – 10” is empty netting called “Expando”. All
remaining “Expando” should hang outside the PVC
tube as shown in the diagram.
3. Place cap on the top of the PVC tube with the
“Expando” on the outside of the tube. This will secure
the coax cable and suspend it inside the tube.
4. The coax cable outside of the PVC tube should have
a “Drip Loop” that is 3” in diameter (minimum) and 1”
below (minimum) entrance point through wall.
5. If the antenna is the highest point of the facility, there
should be an “Arrestor” installed at the bottom of the
Drip Loop.
3"
DRIP LOOP MIN. 3" DIAMETER
ANT 021
Rubber ducky antenna supplied PPA T27 (shown). Best
suited for short range applications or where space is
an issue. The ANT 021 can be mounted with optional
mounting kits when you need to locate the antenna far
from the transmitter. (72MHz – 76MHz). Designed for use
with 72MHz – 76MHz transmitters.
Use with T55, T45, or T27 transmitters.
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7”
ANT 024
Remote dipole antenna kit with mounting hardware.
Used in venues where the antenna is installed remotely
from the transmitter. Wall mounting kit with 20 ft coax
cable included. Total length with both whips extended
is 38 inches. Designed for use with 72MHz – 76MHz
transmitters.
Use with T55, T45, or T27 transmitters.
38”
ANT 025
39 inch telescopic whip. More ecient than the ANT 021.
Designed for use with 72MHz – 76MHz transmitters.
Use with T55, T45, or T27 transmitters.
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ANT 028
39 inch telescopic whip with adjustable angle F-connector.
Designed for use in the 72MHz – 76MHz transmitters.
Use with T55, T45, or T27 transmitters.
ANT 029
Remote antenna kit includes ANT 021 rubber ducky
antenna with adjustable angle F-connector, mounting
plate and 3 ft coax cable. Designed for 1RU installation
and can be used on a cart, wall or other remote antenna
applications. Designed for use with 72MHz – 76MHz
transmitters.
Use with T55, T45, or T27 transmitters.
ANT 034
Remote antenna kit for mounting on the front of a rack with
the RPK 005. Includes ANT 021 rubber ducky antenna,
adjustable angle F-connector, F-connector mount and 3 ft
coax cable. Designed for use with the RPK 005 rack panel
kit in a 1RU rack space. Designed for use with 72MHz –
76MHz transmitters.
Use with T55, T45, or T27 transmitters.
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General Antenna Recommendations
1. Antennas should be vertically oriented. Williams Sound antennas are specifically engineered to be mounted vertically, and
do not work as well if mounted horizontally.
2. Avoid mounting on or near metal, such as I-beams, sheet metal walls, etc. Metal will tend to ground-out the signal.
3. Remote Antennas - use 75Ω cable such as RG-59, RG-6 QS, RG-11 or equivalent cable. As an example, when calculating
distance note that RG-59 has a signal loss of 3 dB per 100 ft.
4. Do not over-tighten antenna connectors or use a wrench. Finger-tight is sucient.
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[email protected] / www.williamsav.com
800-843-3544 / INTL: +1-952-943-2252
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© 2019, Williams AV, LLC TCH 001D
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