MIPRO - Knowledge | Wireless Knowledge

For optimal performance, the selection and placement of the receiver and antenna are most critical. The below applications illustrate the basic principals and suggestions.

Single-channel fixed frequency and multiple single-channel fixed frequencies, indoor or outdoor, short-range applications.

This is the basic installation for home karaoke, small conference or concert venues. Select MIPRO MR-series receiver(s) and fit each with a pair of whip antennas ~ simply mount them securely on the antenna connectors. Place the antennas vertically, away from metallic objects and noise sources. Note that the receiving efficiency deteriorates if more than three receivers are installed together.

Single, Dual and Quad channels, indoor or outdoor, long-range application

Live stages need professional true diversity receiver models such as the MIPRO ACT-series. Antenna selection becomes a crucial issue in these applications. A pair of coaxial antennas is provided with all ACT-series receivers ~ simply mount them securely on the antenna connectors.

An AT-70 extension antenna is needed for extended range. Place it as high as possible above the floor, keeping in mind that signal loss occurs if the connecting cable is too long. To compensate for such signal loss, the addition of AT-70B boosters is recommended. An AT-707B booster can be powered by either the AD-707 antenna divider system or an ACT-series receiver.

It is recommended that an AT-90T directional antenna be used instead of the AT-70 in difficult, multiple-system environments. It has superb receiving and transmitting performance when pointing at specific direction. It is simple to install and gives better results. AT-90R active unidirectional antenna can be considered if long cable is needed. It is pre-installed 1.6dB low-noise analog and 13dB low-noise amplifier to compensate for signal loss from the coaxial cable when connecting to a receiver.

If three of more receivers are installed in the same location, adding a 4-channel antenna divider system with extension antenna will enhance the receiving range and effect.

Four or more channels, indoor or outdoor, long-range applications

An AD-707 antenna divider system and extension antenna are highly recommended for four or more ACT receivers in the same installation.

To save rack space, one ACT-74P professional or ACT-74 standard receiver is a good choice. It is compact, space-saving and has a built-in antenna divider system, thus there is no need for an external antenna divider system to achieve the same performance.

16 channels, indoor or outdoor, long-range applications

Four receiver systems of ACT-707P, a total of 16 channels, connected to one AD-707 antenna divider system and a pair of AT-90R active unidirectional antennas are recommended. System output gain equals 1.

Antenna Design and Placement Principals of Multiple Systems

Select receivers with a built-in active antenna divider system such as the ACT-74P/ACT-74 to avoid loss of receiving sensitivity.

Add an external ACT-707 antenna divider system when 2 or more receivers are installed.

Add an external ACT-707 antenna divider system, extension antenna and boosters when 3 or more receivers are installed.

In multiple channel installations with 2 or 4 antenna divider systems, daisy chain one more antenna divider system to them in order to feed the signal to all of them from 1 pair of antennas. The maximum number of MIPRO receivers housed in a single rack space is 4 channels. If more than 64 channels are needed, it is advised to create a new system to optimize the reception quality.

The selection of AT-90R active unidirectional antennas enhances receiving quality, especially in a difficult, RF environment.