FMU Series
Ultra Power Antenna

FMU


Frequency Range: 88 – 107.9 MHz
Polarization :Circular
Power Rating: 35 kW per bay
System Input: 3 1/8” – 4 1/16” – 6 1/8” EIA
Circularity: ± 2 dB Free Space
VSWR: 1.1:1 ± 200 kHz

Features:

•FULL POWER RATING 
Rated at 35 kW per bay with a maximum of 105 kW for three bays or more.
•EXCELLENT CHOICE FOR MOST CLASS “C” STATIONS
Provides superior performance for stereo and SCA operations due to its high VSWR rating.
•RUGGED CONSTRUCTION
The antenna system is fabricated from rugged, heavy wall copper, silicon bronze cast fittings,  and naval brass. All joints are tig-welded.
•PRESSURIZED AND GROUNDED
The antenna system is pressurized to the feed point of each bay and each bay is DC grounded.
•BEAM TILT AND/OR NULL FILL OPTIONAL
Custom vertical patterns are available with center-fed arrays that have an even number of bays.
•CUSTOM DIRECTIONAL PATTERNS
FM directional antennas based on the customer’s mounting structure, with FCC filing documentation, are available.
•WEATHERIZATION (OPTIONAL)
Radomes or electrical deicers available for areas that experience periods of heavy icing and/or snow conditions.
•STANDARD MOUNTING BRACKETS
Fits up to 4” tower leg or pipe. Supplied with antenna.
•WARRANTY
2-year limited warranty on defects and workmanship to the original purchaser.

 

Notes:
1. Power rating is based on 40 degrees C ambient. Degeneration occurs above 2000 ft.
2. Antenna weight, windload, aperture, and dimensions are based on mid-band operation (98.1 MHz).
3. Antennas with 2 or more bays come with input fine-matcher.
4. Windload based on 50/33 psf.
5. SWR, Inc. maintains a continuous program of product improvement and therefore reserves the right to change specifications without notice.

FM Elevation Full Wave Spaced

FM Elevation Half-Wave Spaced

FM Elevation 3/4-Wave Spaced

Please contact factory for custom elevation patterns.

Full – Wave Spaced

BaysPower Rating (KW) Power GaindB Gain Net. Weight (lbs) Windload (lbs)
1350.441-3.55697183
2700.959-0.182293465
31051.4951.746390712
41052.0443.105486959
51052.5904.1335831206
61053.1604.9976791453
81054.3116.3468721947
101055.4567.36910652441

Half – Wave Spaced

BaysPower Rating (KW) Power GaindB Gain Net. Weight (lbs) Windload (lbs)
1350.441-3.55697183
2700.695-1.58293465
31051.0120.052390712
41051.3131.183486959
51051.6232.1035831206
61051.9242.8426791453
81052.5284.0288721947
101053.1294.95410652441

Please contact factory for other spacings.

Customer Information

Antenna Information

Tower Information

(if mounting to a pipe or other surface, please continue to next section)

Mounting Structure Information

(for antennas NOT being mounted to a tower)

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