GE MDS Mercury Series Reference Manual page 161

Invisible place holder
Figure 5-5. Typical Yagi Antenna (mounted to mast)
Diversity Reception (RX2) Antenna Port
Reserved for future functionality. Future releases of the product will
allow you to connect a second antenna to the transceiver for space diver-
sity reception.
GPS Antennas
A number of GPS antennas (both active and passive) are available for
use with the transceivers. Consult your factory representative for more
information.
Feedlines
Carefully consider the choice of feedline used with the antenna. Avoid
poor-quality coaxial cables, as they degrade system performance for
both transmission and reception. Keep the cable as short as possible to
minimize signal loss.
For cable runs of less than 20 feet (6 meters), or for short range trans-
mission, an inexpensive cable such as Type RG-8A/U might be accept-
able. Otherwise, we recommend using a low-loss cable type suited for
900 MHz, such as Heliax .
®
Table 5-1 on Page 154 lists several types of popular feedlines and indi-
cates the signal losses (in dB) that result when using various lengths of
05-4446A01, Rev. C Mercury Reference Manual 153