Campbell Scientific RF300-Series DRL VHF/UHF Radio Transceivers User Manual
Page 26
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SECTION 3. RADIOTELEMETRY NETWORK COMPONENTS
3-8
See Table 3-7 for cable requirements for
common antennas.
Due to power loss through the cable, the length
of coax cable cannot be extended to any
desired length. The amount of power loss is
dependent on the radio frequency. RG-8A/U
will lose approximately 3.1 dB/100 ft. at 200
MHz and 5.0 dB/100 ft. at 400 MHz. Power loss
calculations are reviewed in Appendix C.
FIGURE 3-5. The PD46 Clamp Mount
FIGURE 3-6. Type-NM (male), BNC, and
Type-NF (female) Connectors
TABLE 3-7 Common Antennas and Characteristics
VHF or
Pipe
Mounting
Antenna
Type
UHF
Cable
Gain(dB)
O.D.
Type
BA1010
Omni
VHF
Coax NM-L
Unity
3/4" - 2 1/8"
U-Bolts
BA1012
Omni
VHF
Coax NM-L
Unity
1" - 2 1/4"
U-Bolts
BA1312
Omni
VHF
Coax NM-L
3.0
1" - 2 1/4"
U-Bolts
BA6012
Omni
UHF
Coax NM-L
Unity
1" - 2 1/4"
U-Bolts
BA6110
Omni
UHF
Coax NM-L
Unity
3/4" - 2 1/8"
U-Bolts
BA6312
Omni
UHF
Coax NM-L
3.0
1" - 2 1/4"
U-Bolts
PD200
Omni
VHF
Coax NF-L
5.8
1" - 2 3/4"
PD46 (Fig 3-5)
PD201
Omni
UHF
Coax NF-L
5.0
1" - 2 3/4"
PD46 (Fig 3-5)
PD220
Omni
VHF
Coax NF-L
5.25
1" - 2 3/4"
PD46 (Fig 3-5)
PD344
Dipole
VHF
Coax NF-L
4.5
2 1/2"
Clamps
PD390S
Yagi
VHF
Coax NF-L
8.0
1 5/16, 2 1/4, or 2 3/8
PD37 (Fig 3-4)
PD400
Omni
VHF
Coax NM-L
7.5
1" - 2 3/4"
PD46 (Fig 3-5)
PD688S
Yagi
UHF
Coax NF-L
10.0
1 5/16" - 2 1/4"
U-Bolts
PD1107
Omni
VHF
Coax NF-L
3.0
1" - 2 3/4"
PD46 (Fig 3-5)
PD1121
Dipole
VHF
Coax NF-L
3.0
2 1/2"
Clamps