steffo78
Regular Member
- Joined
- Oct 15, 2005
- Messages
- 71
- Reaction score
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- Age
- 45
- My Satellite Setup
- 28E 19E on 120cm Gibertini homemade sidemount with Gibertini feedhorn, Inverto C120. 5E 1W on 85cm triax. Digiality VC-CI 204 and Triax dvb-65s receivers. Matrix-cam not working. Swedish Canaldigital "local", Norwegian Viasat.
- My Location
- Sweden/Norway,Telemark
I am wondering about dBi and dB.
When you look at specifications for dishes some manufacturers use dBi (triax,Andrews) and others dB (Gibertini,Fortecstar).
I thought that dBi is the gain you get compared to a isotropic radiator (non-directive antenna), and dB is used to compare with a dipole.
The dipole would be something like 1.5dB better than iso.
This is a big difference for a dish!
Does someone know if its always the dBi figure that should be used???
When you look at specifications for dishes some manufacturers use dBi (triax,Andrews) and others dB (Gibertini,Fortecstar).
I thought that dBi is the gain you get compared to a isotropic radiator (non-directive antenna), and dB is used to compare with a dipole.
The dipole would be something like 1.5dB better than iso.
This is a big difference for a dish!
Does someone know if its always the dBi figure that should be used???