Range vs moto talk


#62

Oops. Lemme correct that … 1 dBd is the equivalent of 3.1 dBi. A difference of 2.1 dB. Roughly doubling effective radiated power. The Moto’s 1.8 dBd would equate to 3.9 dBi … a substantial difference in effective radiated power. At times, my typing speed outpaces my thinking speed.


#63

Yes, that’s exactly the reason why there’s a difference and why goTenna simply can’t recycle the features Motorola used in achieving the range it did in the past.


#64

I think you have it backwards here. The Moto has a significant advantage over the GTM in terms of effective radiated power. The Moto’s 1.8 dBd is equivalent to 3.9 dBi. The Moto’s antenna is providing an effective radiated power of a bit more than 2 watts.

The goTenna MESH antenna is 1 dBi fractal that is essentially operating at unity gain - providing no increase in effective radiated power. In the realm of milliwatts, that’s a huge difference. IMHO, that alone accounts for most of the difference in effective range of the two units.

Differences in spread spectrum utilization, codec, compression all play a role here - but boosting the effective power out of the unit is the biggest single factor in the formula.

Gotenna has to work with the world as it is, according to the FCC. They cannot build an ISM band device that incorporates a gain antenna. Period. There are “hacks” and DIY projects that can significantly improve range of a GTM, even versus an old school Moto.

Users on this forum have verified one and two hop ranges of 26 miles or more, depending on terrain, and ten square miles in urban areas with different configurations.

Please. Stop beating the dead horse. The hungry must eat. Stop whining and build a MOAN.

Our Fire Department’s Community Emergency Response Team will be doing just that to allow real time tracking of our search and rescue teams - over long range - in both urban and non urban environments where there is little or no cell service. We aren’t alone. Many Search and Rescue teams around the country have begun using goTenna MESH for this purpose because it works reliably over wide areas when nothing else does.