FAQ’s/ Types of Antennas

What is circular polarization, in reference to the Helical Antenna?

Most commonly used antennas in wireless audio are linear polarized. Linear polarization means that the antenna is radiating electromagnetic energy on one plane only, either vertically or horizontally. For maximum signal strength, both the transmit and receive antennas in a wireless system must be oriented in parallel with each other. Any deviation from this position will result in signal loss, with a perpendicular antenna orientation creating the maximum amount of degradation. A performer using a wireless in-ear receiver and microphone transmitter rarely ever stays completely still. This constantly changes the antenna polarization, weakening the RF signal.

With circular polarized antennas, such as the PWS Helical and Domed Helical, the electromagnetic field rotates in a circular motion for every RF frequency cycle. This means that no matter how the transmit and receive antennas are oriented in reference to each other, the signal strength remains constant.

What is the difference between a right hand and left hand Helical Antenna?

Helical antennas are circularly polarized. The electromagnetic wave from a right hand Helical rotates clockwise in the direction of the wave’s propagation. This is known as right hand circular polarization. Left hand circular polarization is when the rotation of the electromagnetic wave is counter clockwise. As a standard, the copper element on the PWS Helical Antenna is wound with a right-hand polarization.

What in-ear monitor transmitters can be powered using the GX power output option?

The GX power option has jumpers with barrel-type plugs that will provide AC power for Sennheiser G2 and G3 series in-ear monitor transmitters. With this option, the GX-4P will power up to four units. The Dual GX-4P and GX-8P can power up to eight units each. Although the combiner function of the GX series can be used with any transmitter in the 470-698 MHz range, no transmitters other than Sennheiser G2 and G3 series are supported by the GX power output option.

I need to move my copy of IAS to a new computer. How do I go about transferring the software license?

IAS license transfers are processed manually. Please send an email to support@professionalwireless.com stating that you would like to transfer your IAS license to another computer. If the invoice number for your purchase of IAS is available, please include this in the email to speed up the license verification process. After receiving your email, the license for your copy of IAS will be reset and can then be used on a new computer. Although we will make our best attempt to transfer your license as soon as possible, response times will vary depending on what time of day your request is received.

Does PWS repair wireless gear from other manufacturers?

Although PWS sells gear from all major wireless audio manufacturers, PWS only services equipment manufactured by PWS. Below are links to the repair contacts for a portion of manufacturers of which PWS is a dealer.

Do I need a RA# for PWS manufactured equipment factory repair?

PWS does not require a RA# for PWS manufactured equipment. Please complete the PWS repair form and send a printed copy with your repair to:

Antenna Systems

Antenna Systems can make or break an wireless system installation. The engineers at Professional Wireless Systems can assist you in determining the best types of antennas and cable for your needs. Below is a list of common types of antennas. Each antenna has it’s own advantages and disadvantages. It’s not really possible to say that any one antenna is best or worst. That determination can only be made on a case by case basis for each installation.

Other Accessories such as multicouplers, line amplifiers, passive combiner / splitters and filters are also part of the antenna system. Let PWS provide you with “Custom Solutions” for your installation. Entire installation packages are available on a custom designed basis.

PWS Helical Antenna
types of antennas
  • Unparalled RF performance for In-Ear and Wireless Mics, delivering more than double the range over other types of antennas.
  • View Helical product sheet
Standard Whip
  • 0 dbi gain
  • Narrow RF bandwidth
  • Nearly omnidirectional
  • This antenna is the basic model shipped with all wireless systems. It is designed to be mounted near a large metal ground plane such as the chassis of a receiver. This antenna should never be mounted at the end of a cable unless some type of ground plane is provided.
  • 0 dbi gain
  • Relatively narrow bandwidth
  • Nearly Omni directional (doughnut pattern)
  • Used primarily in the VHF band this low profile antenna is best for remote operation where the advantage of physical height and its affect on extending range is desired. Unfortunately, greater antenna height sometimes means a greater probability of RF interference.
Ground Plane
  • 0 to 1.5 dbi gain
  • Relatively narrow bandwidth
  • (Doughnut pattern)
  • This antenna is primarily used in the UHF band when remote antennas are required. Modeled after standard whips, the ground plane is designed to be used at the end of a cable. The “ground plane” is self contained within the antenna so it doesn’t need to be mounted near the chassis of the receiver.
  • 1 to 3 dbi gain
  • Very wide bandwidth (doughnut pattern)
  • The Discone is used where a wide range of radio frequencies and 360 degree coverage is required. The bandwidth is typically 3:1 to 4:1 (i.e., 160 MHz to 640 MHz or 300 MHz to 1.2 GHz). This antenna does not provide any rejection, but it is possible to use a single antenna for parts of both the VHF and UHF bands.
Log Periodic
  • 6 to 9 dbi gain
  • (depending on the number of elements)
  • Very wide bandwidth
  • (450 to 975 MHz for the model shown)
  • Typically 50┬░ to 70┬░ beam width
  • The “Log Periodic Dipole Array” is ideally suited for use with multiple receiver installations covering a wide band of UHF frequencies and where directivity, long range or back end rejection of interference is desired. Compare these types of antennas to a choir microphone.
Yagi-Uda (Yagi)
  • 6 to 10+ dbi gain
  • (depending on the number of elements)
  • Narrow bandwidth
  • (506 to 536 MHz for the model shown.)
  • Typically 40┬░ to 70┬░ beam width
  • This antenna is ideally suited to installations in which the range of frequencies in use is fairly small. This antenna provides long range (from the front) and high rejection (from the rear). The tight RF bandwidth and narrow beamwidth of this antenna make it ideal for custom applications with high demand requirements. Compare these types of antennas to a shotgun microphone with a tight acoustic filter.