NavCom SF-3050 Rev.A - Manual (Page 102)

SF-3050 User Guide – Rev A
4-100
GNSS Antenna Connector
The connector used on the SF-3050 is a TNC fema
labeled ANT on the rear panel of the sensor as
shown in Figure 32.

The GNSS
le,
antenna connector
Th
o m
r
d
provides +5V
± 0.5V at 100mA . Do not
disconnect the antenna when the
GNSS unit is powered on.
e system is supplied with 12ft (3.6m) of RG58 Th /U
cable (P/N 94-310261-3012LF). The cable is fitted
with two straight male TNC connectors.
e cable length between the antenna and SF-3050
uld not exceed 7dB loss at 1.575GHz for optimu
formance, though the system may tolerate up to
B of cable loss with minimal perfo
sh
pe
10
rmance. Lower
elevation satellite tracking suffers the most with more
than 7dB insertion loss.
Table 22: Acceptable Cable Lengths
Cable Atten. Cable Loss Atten. Cable
Type (dB) per
100 Ft.
Length
in Feet in dB (dB)
per
100 m
Length
in
Meters
Loss
in dB
RG-58C 19.605 36.00 7.06 64.32 11.00 7.08
RG-14 13.00 2 7.04 16.494 43.00 7.09 54.12
RG- 9.564 74.00 7.08 31.38 22.50 7.06 213
RG- 17.224 41.00 7.06 56.51 12.50 7.06 223
LMR600 3.407 207.00 7.05 11.18 63.00 7.04
LMR400 5.262 133.00 7.00 17.26 41.00 7.08
LMR240 10.127 70.00 7.09 33.23 21.00 6.98
LMR195 14.902 47.00 7.00 48.89 14.00 6.85
In-line amplifiers suitable for all GNSS frequencies
ay be used to increase the length of the antenna
able, but care should be exercised that tracking
erformance is not degraded due to multiple
m
c
p