WorldPhone Liberator – Chapter 5. Appendices
B-22
Appendix B – Optional antenna cable
Optional antenna cable
General
Double screen 50
Ω
coaxial cable must be used for connection be-
tween Liberator and the various Antenna Units.
The coax cable should be secured by laying the cable in a tube and/
or by fastening the cable to avoid damage.
A "pigtail" is normally required for connection to the TPU.
The maximum length of the coax cable is limited by the DC and RF
loss through the cable:
Maximum DC loss:
R loop 0.6 ohm
Maximum RF attenuation at 1525-1660 MHz:
< 10 dB
The table below lists suitable double screened coax cables:
Ready-made cables
The following cable extensions are delivered with coax connectors
mounted:
10 m cable
QRPM 911091-10000
28 m cable
QRPM 911057-28000
80 m cable
QRPM 911058-80000
N/female
*Antenna cable
at Liberator
at the antenna
max. length
for 10 dB/0.6
*Antenna cable
Reference
Diameter
Suitable coaxial connectors
at Liberator
at the antenna
RG214
MIL-C-17
10.8 mm
25 m
12.9 mm
75 m
16.0 mm
95 m
27.5 mm
172 m
11N-50-7-5
11N-50-10-4
+ “pigtail”
11N-50-10-4
S 10172 B-10
(QTZC 502 012
11N-50-7-5
+ “pigtail”
11N-50-12-115
+ “pigtail”
11N-50-12-115
RF
1
/
2
” 50
11N-50-23-101
+ “pigtail”
11N-50-23-101
RF
7
/
8
” 50
Pigtail
QRPM 911059-1000
N/male
N/male
Optional antenna cable
