Intelligent Wireless Doorbell Voice Intercom 300M Distance Household Door Bell Outdoor Transmitter + Indoor Receiver Door Ring

Intelligent Wireless Doorbell Voice Intercom 300M Distance Household Door Bell Outdoor Transmitter + Indoor Receiver Door Ring
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New Arrival! DP100 Exclusive Half Wave FM Dipole Antenna High gain outdoor Dipole antenna 88 to 108mhz for FM Transmitter up to 150w + Cable

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A dipole antenna is a radio antenna that can be made of aluminum, copper, and bronze tube with a center-fed driven element. It consists of two metal conductors of rod, oriented parallel and collinear with each other (in line with each other), with a small space between them.

The dipole antenna is a particularly important form of RF antenna which is very widely used for radio transmitting and receiving applications. The dipole is often used on its own as an RF antenna, but it also forms the essential element in many other types of RF antenna. As such it is the possibly the most important form of RF antenna.

A half-wave dipole antenna means the length of this dipole antenna is equal to a half-wavelength at the frequency of operation.

wholesale 1/2 Half Wave FM Dipole Antenna High gain outdoor Dipole antenna 88-108mhz for FM Transmitter+Cable

Why do we recommend this dipole antenna?


1).The half-wave dipole is very clear and easy for frequency adjustation, there are scales on the side bar of the antenna from which you can adjust the frequency from 88~108 by 1mhz stepping.wholesale 1/2 Half Wave FM Dipole Antenna High gain outdoor Dipole antenna 88-108mhz for FM Transmitter+Cable

 

2).The dipole is a simple antenna to construct and use, and many of the calculations are quite straightforward.

wholesale 1/2 Half Wave FM Dipole Antenna High gain outdoor Dipole antenna 88-108mhz for FM Transmitter+Cable

 

3.)The radiation pattern and high gain of dipole:

 

 

 

Radiation pattern of a half-wave dipole antenna,scale is linear.

 

wholesale 1/2 Half Wave FM Dipole Antenna High gain outdoor Dipole antenna 88-108mhz for FM Transmitter+Cable

 

The Gain of a half-wave dipole (same as above). The scale is in dBi (decibels over isotropic).

 wholesale 1/2 Half Wave FM Dipole Antenna High gain outdoor Dipole antenna 88-108mhz for FM Transmitter+Cable

 

SWR diagram of the half wave dipole at 88Mhz

wholesale 1/2 Half Wave FM Dipole Antenna High gain outdoor Dipole antenna 88-108mhz for FM Transmitter+Cable

 

The antenna cable. (we will send cable withBNC connector if no there is no special request. Other option is NJ/TNC connector)

 

IMG_5579

 

 

The antenna cable. (we will send cable withBNC connector if no there is no special request. Other option is NJ/TNC connector)

Attention: When setting the antenna, the "Anode" end should be face up, "negetive electrode" should be face down

 

 

Electrical specification:

Frequency range: 88~108 MHz ( 1MHz stepping)
Input Impedance Impedance:50 ohm
VSWR <1.5
Gain:3.5 dBi
Polarization: Verticality
Maximum Power Input: 150W
Horizontal 3dB Beam Width:360 °
Vertical 3dB Beam Width:73 °

 

 

Mechanical Specifications:

Height: 990mm
Radiating Element Material:Aluminum Alloy
Connector:SL16-K
Holding Rod Diameter: Φ30~
Φ40 mm

 

Package Include:

1* DP-100 Dipole Antenna

1* High quality 8meter BNCcable(If you need other connectors, please tell us before shipping,we also haveNJ/TNC connectors)