|Standard Acorn Whip Antenna|
I often get asked about alternative antennas which will improve connectivity for the Acorn cellular cameras. The high gain whip and the yagi shown below are the ones that I use myself, both of which improve the signal strength to and from the cell tower.
The 6dBi omni directional whip is useful in situations where the signal with the standard antenna is one or two bars and unstable.
The 11dBi yagi is capable of providing a workable signal where no signal exists using the standard antenna. It is highly directional and can allow the camera to be used at a greater distance from the cell tower than would normally be possible.
The gain is measured against an isotropic source which is a theoretical point source of electromagnetic or sound waves which radiates the same intensity of radiation in all directions. It has no preferred direction of
radiation. It radiates uniformly in all directions over a sphere centred on the source and is used as reference radiator (0dB) with which other sources are compared.
The standard Acorn antenna provides 0dB gain when referenced against an isotropic source.
RF Solutions - High Gain Yagi
This is a high performance, directional antenna for use on 900MHz and 1800MHz frequency GSM networks.
Designed for outdoor use, it has a sturdy aluminium box section construction ensuring it is light but rugged. It comes with a heavy duty mounting clamp allowing fixing to external masts or poles.
The antenna has 9 radiating elements that generate 11dB directional gain, ensuring that good performance is obtained even in fringe coverage areas when the antenna is pointed in the direction of the appropriate cell site.
Complete with 10 metres RG58 detachable cable and an SMA male connector.
Ant 2: 11dBi 900 and 1800MHz GSM Yagi
Gain: 11 dBi - Extends working range up to 4 times more than a standard ¼ wave antenna
Operating Frequency: GSM 900MHz and 1800MHz Impedance: 50 Ohms VSWR: <1.5 to 1
Polarization: Vertical or Horizontal
Maximum Power: 60 Watts Operating Temperature: -40ºC to 85ºC Antenna Material: Aluminium
Dimensions: 580mm x 185mm Connector: SMA plug (male)