Product technical dataProduct name:Single dipole FM broadcast
transmitting antennaEquipment model:ZRFM-1OEquipment origin:Jiangsu
Manufacturer:Confucianism Nanjing Radio and Television
Equipment Co., LtdOne.Product function introduction1. Manufacturing
material and process:Antenna material: the outer tube of antenna
vibrator is made of "304" high-quality stainless steel tube with a
wall thickness of 2.4mm; The conductor and feed system in the
antenna are made of high-quality H62 brass silver plated; The
reflective plate is made of 304 high-quality stainless steel pipe
with wall thickness ≥ 2mm; All connecting bolts of antenna are
high-quality stainless steel; The reflecting plate can withstand
the trampling of installation workers, and the pipe diameter and
mechanical strength can ensure no permanent deformation or damage
when the wind speed ≥ 200 km/h.Power divider material: the outer
conductor is made of high-quality H62 fine-drawn brass tube with
nickel plating, and the flange is also made of copper with nickel
plating for corrosion protection; The inner conductor is
high-quality H62 fine-drawn brass tube with silver plating
treatment;The power divider adopts 90 ° phase shifter technology;
Input impedance is 50 Ω;Insulation material:
polytetrafluoroethylene;Installation components: high-quality A3
steel hot-dip galvanized;Antenna installation connecting bolts:
high-quality 304 stainless steel bolts;The antenna feeder system
will charge dry air into the whole feed system until the antenna
dipole input port.The whole set of antenna has undergone pressure
test, waterproof and anti-rust treatment. Joint sealing: Our
professional and technical personnel operate sealing treatment on
the tower. Waterproof treatment is equal to the following
requirements: place vulcanized sealing ring in the antenna joint;
The installation of antenna connector shall be filled with
waterproof thread sealant; Wrapped with waterproof self-adhesive
tape for outdoor use; Finally, the rubber heat-shrinkable sleeve is
used externally for heat shrinkage.2.Waterproof structure treatment
of antenna unit: our company adopts effective sealing and
waterproof treatment. The middle of the vibrator of the antenna
unit is crimped and sealed with high and low temperature resistant
polytetrafluoroethylene thread encryption sealing ring, which is
anti-smashing and anti-cracking, to ensure the waterproof
performance of the antenna unit.3.Airtightness of the antenna
feeder system: our company fills the input end of the main feeder
cable of the antenna feeder system in the transmitter room with dry
air at the pressure of 30 kpa, and the drop is less than 5 kpa in
24 hours.4. DC resistance and insulation resistance of antenna
feeder system:DC resistance of antenna feeder system: 100 m, not
more than 0.1 Ω;Insulation resistance of antenna feeder system:
main feeder, power distributor, sub-feeder, etc. (in case of no
short circuit point) shall not be less than 500M Ω, and antenna
unit (in case of no short circuit point) shall not be less than 50M
Ω.The feed structure of antenna unit is simple, without short
circuit clamp to adjust the standing wave ratio, with good
consistency and high efficiency. The antenna radiator is integrally
welded, with high mechanical strength and strong wind and water
resistance. The interface of antenna unit is IF45 flange, which has
large power capacity. The middle of the vibrator is crimped and
sealed with polytetrafluoroethylene (plastic king) thread, which is
resistant to high and low temperatures, smashing and cracking, and
aging. Even in severe weather conditions such as strong wind and
ice coating, the antenna will not be damaged, resulting in a
broadcast outage. This antenna is particularly suitable for
high-power mountain stations in harsh weather conditions.All
indicators of the antenna system comply with the standards of GY/T
5088-2013 Technical Indicators and Measurement Methods for
Transmission Antenna Feeder System of TV and FM
Broadcasting.Two.Technical parameters of antenna system(1)Antenna
type: single dipole(2)Frequency range: 87~108MHz (available in full
frequency band)(3)Polarization mode: vertical
polarization(4)Antenna feeder impedance: 50 Ω(5)Standing wave
ratio: within the range of 87~108MHz, at the input end of the main
rheostat of the antenna system (excluding the main feeder) ≤ 1.038;
At the input end of the antenna feeder system (including the main
feeder) ≤ 1.08(6)Antenna gain: G4 layer 4 surface ≥
9.3dBd(7)Antenna power capacity and interface: unit board power is
2KW Antenna unit interface: 7/8 ″ flange (IF45-50K)Branch feeder
model: 7/8 ″Antenna system input interface: 3 1/8 ″ flange
(IF110-50K)(8) Antenna field typeAntenna horizontal plane field
shape: out-of-roundness 10%Provide horizontal and vertical field
diagrams, and meet the coverage requirements according to user
requirements and tower position antenna parameters(9) Mechanical
property requirementsMaximum wind speed>200km/hOperating a
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