Adafruit
Adafruit FM Transmitter Antenna Outdoor Stainless Steel 15W Magnetic Base 3m TNC Cable
Outdoor stainless-steel FM broadcast antenna with magnetic base, 3 m RG58 cable and TNC connector handles up to 15 W
- Stainless steel construction resists rust and water for outdoor use
- 3 dBi gain extends FM coverage and clarity
- Magnetic base enables quick installation in minutes
- TNC connector with 3 m RG58 cable and BNC adapter fits most transmitters
- Rated for 5 W to 15 W transmitters with 1.5 VSWR
Outdoor FM Antenna 15 W
This stainless-steel antenna is built for outdoor FM broadcast transmitters operating between 5 W and 15 W. The waterproof, rust-proof construction suits permanent rooftop or mast mounting in campuses, rural sites, mines or drive-through venues. A magnetic base allows quick temporary placement on metal surfaces. The kit includes the antenna, magnetic base and a 3 m RG58 cable with TNC connector.
98 MHz centre frequency 6 MHz bandwidth
The antenna is tuned to a 98 MHz centre frequency with a 6 MHz bandwidth, covering the standard FM broadcast band. A 1.5 VSWR and 50 Ω impedance match typical transmitter outputs, while 3 dBi gain and vertical omnidirectional radiation extend coverage evenly in all horizontal directions. Direct ground lightning protection is integrated.
TNC male cable and BNC adapter included
The supplied 3 m RG58 cable terminates in a TNC male plug that connects directly to the antenna. A TNC female to BNC male adapter is also provided, letting you interface with equipment that uses BNC ports without sourcing extra parts. Both connectors are included in the single package.
Highlights
- Stainless steel construction resists rust and water for outdoor use
- 3 dBi gain extends FM coverage and clarity
- Magnetic base enables quick installation in minutes
- TNC connector with 3 m RG58 cable and BNC adapter fits most transmitters
- Rated for 5 W to 15 W transmitters with 1.5 VSWR
Specifications
No published specifications for this item yet.
Questions about this item
How much FM broadcast power can this antenna handle in a real installation?
The antenna is rated for a maximum power input of 15 W, so it will safely handle any FM transmitter operating at or below that level.
What does the 1.5 VSWR figure mean for the signal on the TNC feed line?
A VSWR of 1.5 indicates a good impedance match, meaning very little RF power is reflected back toward the transmitter when the antenna is connected via its TNC connector.
What mounting space does the 27-inch stainless steel whip and magnetic base require?
The whip measures 27 inches tall and the magnetic base attaches to any flat ferrous surface, so you need a clear vertical area of roughly that height plus room for the 3-metre RG58 cable run.
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