Druckschrift 9981.0190, Broadcast Antenna Systems - Romkatel

TV Transmitting Antenna
with dipole panels K 52 30 5. . or K 52 31 5. .
174 – 230 MHz
● Typical antenna array with dipole panels K 52 30 57 or K 52 31 57.
● The feeder network is made up of coaxial power splitters and flexible connecting cables
in accordance with the radiation patterns specification and the transmitting power.
Input
Frequency range
VSWR
Impedance
Polarization
Internal connections
Max. power
Radiation pattern
Half antenna splitting
Pressurization
Grounding
Max. wind velocity
Connectors according to IEC, EIA or DIN.
174 – 230 MHz
< 1.05 in the operating channel after tuning
or < 1.1 in the whole range
50 Ω
Horizontal or vertical
Connectors according to IEC, EIA or DIN
are used throughout the system,
allowing easy assembly and maintenance.
According to customer’s requirements.
The examples of radiation patterns are valid
for horizontal polarization.
At vertical polarization patterns vary slightly.
Upon request, the antenna can be divided into
2 halves (for measurement and maintenance).
The 2 halves are connected by a
2-way power splitter or patch panel.
Splitters and connecting cables can be supplied
with dry air (please specify when ordering).
Via mounting parts.
225 km/h / 200 km/h
H
1600 mm
K 52 30 5. . Material: Hot-dip galvanized steel
No. Panels Gain* Weight Antenna Windload
of per (at mid-band) (without mounting height H (v = 160 km/h)
bays bay dB times hardware) kg m kN
2 5.5 3.5 66 1.1
1 3 4.3 2.7 94 1.3 1.85
4 3.1 2.0 122 2.2
2 8.5 7.1 122 2.2
2 3 7.3 5.4 173 2.9 3.7
4 6.1 4.1 224 4.4
K 52 31 57
2 11.5 14.1 224 4.4
4 3 10.3 10.7 346 6.1 7.4
4 9.1 8.1 453 8.8
K 52 31 5. . Material: Weather-proof aluminum
No. Panels Gain* Weight Antenna Windload
of per (at mid-band) (without mounting height H (v = 160 km/h)
bays bay dB times hardware) kg m kN
2 5.5 3.5 22 0.8
1 3 3.4 2.2 29 1.2 1.2
4 2.0 1.6 36 1.6
2 8.5 7.1 44 1.6
2 3 6.4 4.4 58 2.8 2.4
4 5.0 3.2 72 3.2
2 11.5 14.1 88 3.2
4 3 9.4 8.7 116 6.0 4.8
4 8.0 6.3 144 6.4
* Referred to λ/2 dipole. Attenuation of the internal cabling and the gain-decrease
in case of null fill in the vertical radiation pattern are not considered.
Approximate values for gain decrease:
cable attenuation: 0.2 – 0.4 dB
null fill:
0.2 – 0.5 dB
Gain figures are valid for the direction of maximum radiation (see diagrams on
following page).
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