Thermal Drive Unit, Automatic Drive Unit

STARLINE5

If necessary, to achieve the gain specification, you can use the interstage pad or output pads to reduce the gain of the amplifier. However, this will affect amplifier performance. Output padding degrades the station distortion performance while having minimal effect on the carrier-to-noise (c/n) performance. Interstage padding is the opposite and therefore has little effect on distortions but degrades the c/n performance. In general Motorola recommends that you pad to the amplifier gain specification on the output (where possible). However, if you are unsure about the optimal padding technique for your system, split the required padding evenly between the interstage and output pad(s).

It is recommended that you contact Motorola’s TRC or your account representative for more specific information regarding use of the interstage and output pads.

Thermal Drive Unit

To use the thermal drive unit (TDU):

1Place the jumper on the TDU to the LOW, MEDIUM, or HIGH position to specify the amount of cable for which the TDU compensates at the highest frequency preceding the amplifier station.

Low = 0 dB to 15 dB, medium = 15 dB to 30 dB, and high = 30 dB or more of cable.

2Position the drive control select jumper temporarily in the MAN position and perform the complete procedure described in Manual Gain Control if not already completed.

3Position the drive control select jumper to DRIVE UNIT.

4Connect a signal-level meter to the FWD OUT test point and tune the meter to the high band-edge carrier.

5Turn the thermal level potentiometer on the TDU fully clockwise and then reduce to obtain the level stated in Step 7 under Manual Gain Control.

Automatic Drive Unit

To use the automatic drive unit (ADU):

1Position the drive unit select jumper temporarily to the MAN position and perform the complete procedure described in Manual Gain Control if not already completed.

2Verify that the frequency stamped on the ADU control unit is the same as the system pilot frequency.

The pilot frequency is a CW pilot or available NTSC television channel not scrambled using sync suppression.

3Position the drive control select jumper to DRIVE UNIT.

4Connect a signal-level meter to the FWD OUT test point and tune the meter to the high band-edge carrier.

5Turn the auto level control potentiometer (ADU) fully clockwise and then reduce to obtain the level stated in Step 7 under Manual Gain Control.

RF Amplifier Quick Start Guide

RF Amplifier specifications

Motorola RF Amplifiers are integral components in radio frequency applications, known for their reliability and superior performance across various telecommunications platforms. These amplifiers are designed to enhance the strength of radio signals for wireless communications, ensuring clear and stable transmission over longer distances.

One of the key features of Motorola RF Amplifiers is their ability to deliver high linearity. High linearity is crucial in reducing distortion in transmitted signals, which is especially important in applications like mobile communications, where signal clarity can significantly affect call quality and data transmission. This characteristic allows for greater efficiency and effectiveness in systems where multiple signals are present, such as in densely populated urban areas.

Another significant aspect of Motorola RF Amplifiers is their broad frequency range. These amplifiers can operate across various bands, from VHF to UHF and even higher frequencies, making them suitable for diverse applications ranging from public safety communications to broadcast services. The versatility in frequency response adapts to the needs of different devices and systems, making them a preferred choice for engineers and manufacturers alike.

The technology underpinning Motorola RF Amplifiers includes advanced materials and integrated circuit designs that allow for higher thermal efficiency and reduced power consumption. This is particularly important in battery-operated devices where energy efficiency leads to extended operational life. Additionally, the compact packaging of these amplifiers ensures that they can be easily integrated into a variety of devices without requiring excessive space.

Motorola also places a strong emphasis on durability and ruggedness in their RF Amplifiers. Many models are engineered to withstand harsh environmental conditions, making them suitable for outdoor installations and challenging applications. Their ability to perform consistently in extreme temperatures, moisture, and vibration enables deployment in critical infrastructure contexts like base stations and emergency services.

Moreover, Motorola RF Amplifiers typically include built-in protection features, such as thermal shutdown, over-voltage protection, and automatic gain control. These safeguards enhance the longevity and reliability of the amplifier, reducing the need for maintenance and offering peace of mind to operators who rely on these systems.

In conclusion, Motorola RF Amplifiers are characterized by their high linearity, broad frequency range, energy efficiency, and rugged durability. With advanced technologies and features that ensure optimal performance, they continue to meet the demands of contemporary wireless communication systems, solidifying Motorola’s reputation in the RF engineering field.