The 50-50 grind is the first grind trick that most skaters learn, and is a great basic skateboard trick to learn. The 50-50 grind is where the skater grinds the ledge or rail with both trucks. The nice thing about the 50-50 is that you can learn to do it on a curb, which is a pretty safe and easy place to practice.
dBi is decibels relative to isotropic radiator which means that the radiator (an antenna, usually) sends the signal equally strong in all directions, including above and below. Such a radiator would have 0 dBi.(I have yet to see an antenna like that -- it may exist only in math theory.).Bi is decibels relative to isotropic radiator which means that the radiator (an antenna, usually) sends the signal equally strong in all directions, including above and below. Such a radiator would have 0 dBi. (I have yet to see an antenna like that -- it may exist only in math theory.).
So unless you know what method was in use the dB rating means little. I used the term raw gain to let the reader know this is actual signal gain produced by the antenna not the antenna with amplifier. Unfortunately there are no laws (none that anyone enforces) to prevent false dB antenna gain ratings. If I state 5 dB someone else can state 6. I think you know what I mean. I came across a small antenna claiming it produced over 30 dB gain. I know this antenna isn't producing that kind of performance. In fact it's more likely only around 3 dB or less. I state an average raw antenna gain of 5.8 dB on the EZ HD antenna. The test method is dBd (gain over a dipole). A 5.8 dBd gain is excellent for an antenna of this size. I don't want to stir the pot but TV antennas in the past decade have become popular again and are big business for some. Many companies are offering low quality imported antennas.