allows emergency operations to be carried out for longer periods without the need to stop for battery maintenance.On a Dual Band ham radio the stock antenna is a compromise antenna that has about a 12db loss as compared to a proper 2m rubber antenna. The RatTail typically restores the dual bands 2M efficiency to that of a full 14 wave vertical. In all the dual band radios we tested there was an astonishing 18db improvement on 2M. This represents a 16 times or 1600 improvement. For the first time Dual band operation on both 2M and 70cm can be equally efficient without the need to change antennas.Because the Rattail Antenna Booster attaches to the bottom of the radio, unlike other devices t.

Website: http://rattailantenna.com/