The double stacked dipole allows a broadband operation. That means you never have to to tune the antenna to your frequency. This is achieved using a specially designed splitter box to feed each dipole antenna with the correct RF signal phase. If the antenna is mounted correctly the SWR is less than 1.8 across the whole band from 87.5 to 108 MHz. Just put your transmitter on any frequency from 87.5 to 108 MHz and switch on.
The RF field strength directly below this antenna is lower than that of a single dipole. The built in balun provides a truly unbalanced input and prevents any RF currents traveling down the outer of the feeder cable. This combined with the low field strength below the antenna reduces the chances of audio and TV interference considerably and maximises RF power to the horizon.
Coaxial line losses can be considerable at 87.5 - 108 MHz. For long runs we provide a good quality cable such as LMR400 or equivalent for connecting the antenna system to the transmitter.
• SWR less than 1.6 from 87.5 to 108 MHz
• 20 MHz Bandwidth
• Aluminum and ABS Construction
• 50 ohm unbalanced input (SO-239 socket)