Antennas

FreeWave Technologies offers an assortment of directional and omnidirectional antennas. While there are many factors to consider in making an antenna decision, there are 3 inescapable truths:

  1. Height is everything.
  2. The radio will only perform as well as the antenna and cable connected to it.
  3. Height is everything.

FreeWave spread spectrum radios using only a 3" long unity gainwhip antenna have a line-of-sight range of about 20 miles. Using external antennas will improve their performance considerably. In general, Yagi antennas should be used for longer point-to-point links and omnis for shorter links or for repeater sites; however, these are simply guidelines. With proper placement, the type of antenna becomes secondary. As an example, we know of installations where Yagis are used for repeaters, with a 10 mile link coming into the back or side of the antenna.


FreeWave offers the following antennas. Please note: The omni-directional antennas maybe used with either brackets or magnetic mounts.

Ordering Info:
 

Model Range Type Dir. Gain Conn. Dim. Notes
EAN0900NR 900 MHz Whip,1/2 wave No  2 dBi
 		 N-type Male 8" Tall  
EAN0900RQ 900 MHz Whip,1/4 wave No   Reverse SMA 3" Tall  
EAN0900SR 900 MHz Whip,1/2 wave No  2 dBi
 		 SMA 7" Tall  
EAN0900SQ 900 MHz Whip,1/4 wave No   SMA 3" Tall  
EAN0900WB 900 MHz High gain No 5.15 dBi NMO 12" Tall Donut pattern, open Coil
Includes brackets.
EAN0900WR 900 MHz Whip No   screw   Replacement for DGR-115
EAN0900YC 900 MHz Yagi Yes 12.15 dBi N-type fem 24" Long 7-element; Bluewave;
50 °H / 45 °V Beamwidth.
125 MPH rated wind velocity.
EAN0905WB 900 MHz High gain No 5 dBi NMO 33" Tall Elevated feed antenna.
No ground plane required.
Includes brackets.
EAN0906YA 900 MHz Yagi Yes 8 dBi N-type fem 15" Long 3-element; Mobile Mark;
100 °H / 60 °V Beamwidth.
100 MPH windload.
EAN0906WB 900 MHz High Gain No 8.15 dBi N-type fem 65" Long Fiberglass; Antenex;
Includes brackets.
EAN0140YC     1.4 GHz Yagi Yes 10 dBi N-type fem 19" Long 7 element
EAN0147YC 1.4 GHz   Yagi Yes 7 dBi N-type fem 12" Long 3 element
EAN2400NR 2.4 GHz Whip,1/2 wave No  1 dBi
 		 N-type Male 5" Tall  
EAN2405WC 2.4 GHz Whip No 5 dBi NMO 4.5" Tall Donut Pattern, no ground plane required
EAN2414CR 2.4 GHz Corner reflector Yes 14 dBi N-type fem 7" Tall 5" Deep 44 °H / 35 °V Beamwidth


We also can provide omnidirectional antennas with a horizontal polarization. Horizontal polarization may be very useful when one of the radios in a link is co-located near a page or cell phone tower, by effectively lowering the overall noise floor by up to 20 dB. When using Yagi antennas, this is accomplished by turning both antennas in the link so their elements are horizontal. Out-of-band noise may also be reduced with the use of FreeWave band pass filters.
 
NOTE: Use of proper cable assembly is very important!