The most rugged radio communication antennas available in the US, for the US frequencies.
 
Our classic GMRS radome antenna. Pre-tuned. Comes with 16’/4.8m of RG-58 coax and sturdy spring base. It has a gain of 6dBi which has an excellent radio pattern that extends far to the horizon with very reasonable reach in elevated terrain.
 
Most mobile antennas and their various mounts were designed for general mobile (pavement, over-the-road, highway) vehicles.  Alamosa's mobile antennas are designed specifically for off-road scenarios.  These kind of terrain rock your vehicle back and forth and to and fro ad naseum.  These rutted and corrugated roads leave your teeth chattering and your suspension begging to stop.  The weather conditions where Celsius and Fahrenheit are measured at the same scale number.
 
A 6dBi-gain rugged antenna tuned specifically for the Americas' GMRS/FRS radio bands.  The copper, internal 5/8-wave antenna is encased in a fiberglass radome weatherproof and fixed cover. Fed by RG58-A/U coax, with an FME connector for easy routing through bullbar mount holes, and vehicle firewalls or headliners.
 
This antenna has an exceptionally strong base spring and designed to be mounted on a sturdy mount such as a metal front bumper/bullbar.  It is mounted by a 14mm bottom stud through any 15mm / 9/16” available metal-sturdy hole. Note this should not be mounted on a body panel as this will cause body panel deformation.
 
 
Alamosa Antenna is a superior off-road antenna.  Most mobile antennas and their various mounts were designed for general mobile (pavement, over-the-road, highway) vehicles.  Alamosa's mobile antennas are designed specifically for off-road scenarios.  These kind of terrain rock your vehicle back and forth and to and fro ad naseum.  These rutted and corrugated roads leave your teeth chattering and your suspension begging to stop.  These weather conditions where Celsius and Fahrenheit are measured at the same scale number.
 
Radome design.  Radomes (or literally radio domes) are radio frequency transparent material that covers and protects the copper internal antenna from weather, salt, ice, and corrosion.  This ensures consistent performance.  Alamosa Antennas encase the radiating internal antenna in foam core fiberglass.
 
Sturdy mount and spring.  These antennas employ a large-diameter spring base with a hollow bolt and nut, inscribed in both is the coax run for the antenna.  This is somewhat different from a direct UHF- or NMO-mount.
 
Remains upright.  With the radome design, these antennas remain straight for optimal radio emissions.  The spring provides a measured level of lee to counter the cyclical moments/forces encountered in most off-highway scenarios (versus that moment being conveyed into the bending of radiating antenna itself).
 
Single Band.  Despite best efforts, these antennas are single band, meaning they can be tuned to resonate at a specific VHF or UHF band:  (e.g.) GMRS, or 2 meter Amatuer.  The suspended copper design does not work to produce acceptable VSWR for a dual-band use.