Tuesday, May 25, 2021 at 15:38
There is a lot of confusion what a CelFi Go actually does. One can only obtain what signal is being transmitted from the Cell Tower. The quality of the external antenae (Strike or CelFo Go or Yagi etc...) is what determines how much of that signal can be utilised.
All a CelFi Go does differently than the Strike is how the received signal is provided to the end device (phone, tablet etc...).
In the case of the CelFi Go, it receives a weak signal through its good quality antenae and then re-radiates that signal with its small second antenae (boosts by ~100db) so multiple devices close-by can get the benefit.
In the case of the Strike, it receives a weak signal through its good quality antenae and then only the phone in the Strike holder can receive that signal. Using that phone as a mobile hotspot allows other nearby phones to utilise wifi for calling and/or internet use.
In the case of the van with a Yagi, it receives a weak signal through its good quality antenae and then that signal is utilised by a modem and broadcast as WiFi.
All mobile devices are limited on the amount of power they are allowed to use to transmit their signal. Only illegal boosters increase the transmit power above that allowed for a mobile device (CelFi Go is limited to same transmit stength as a phone).
If a CelFi Go uses a Yagi (like the above hotspot example), it to will have improved range compared to its broomstick antenae, soley due to the quality of the Yagi antenae... but no difference than the wifi with Yagi.
If the CelFi Go utilises a better re-radiating antenae, it will have a further range for local users.
BUT.... the receiving antenae (Yagi, broomstick etc...) MUST be located outside of that range, otherwise it interferes with the CelFi Go reception of the Cell Tower signal.
In practise, the only difference with a CelFi Go is that it has the convinience of re-radiating the signal on the same frequencies that the mobile phone uses. It is far more seamless than the Strike (holder required) and WiFi (only internet calling).
Utimately the reception for any method is dependant on its antenae. There is only a set amount of Cell Tower signal available and the quality of the receiving antenae detemines how much of the available signal one can utilise.
Cheers
Mark
FollowupID:
914496