Ericsson MPI-II VHF manual Modification Instructions, Alternate if Option

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LBI-38557

LBI-38557

2.A full charge cycle using an appropriate Ericsson GE charger.

3.This procedure should be repeated again. Performing the rated discharge and charge cycle at least twice should sufficiently restore the battery.

MODIFICATION INSTRUCTIONS

(Alternate IF Option)

To install the Alternate IF Option, follow the instructions shown below:.

1.Remove 2nd oscillator crystal unit Y501 and install 45.755 MHz crystal unit (19B233066G18)

2Remove 1st IF crystal filters Z501 and Z502. Install 45.3 MHz crystal filters (19A705613G26) using one of the following orientation methods:

a.If there is a dot on top of each crystal filter can, then use these dots to orient filters Z501 and Z502(See Figure 10)

b.If either crystal filter can does not have a dot on top, then the side of the can which has the part number printing will be used for orientation. Orient the marking side of Z502 toward L502 and the marking side of Z502 toward PTT switch S4 (see Figure 10).

3.The radio data file must be modified if the Alternate IF option is installed. MPI Synthesized (MPI-II) Radio Programming software version 2.0 or higher must be used to make this change. Toggle the Standrad IF status in the F7 Option field to "NO". Reprogram the radio with the new data file.

4.Refer to the Receiver Alignment procedure in this manual. Start at the beginning of the Receiver Align- ment section and follow the instructions for IF Align- ment and Second LO Frequency Set. the remaining sections may be omitted.

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Contents Maintenance Manual Battery Disassembly ProcedureTable of Contents IntroductionPersonality Programming Alignment and TestTest Equipment Test SET UPTransmitter Alignment Location of Tuning Controls and Test Points Receive Alignment TroubleshootingTransmitter Receiver SynthesizerSurface Mount Components Component ReplacementSurface Mount Removal Battery Information Modification Instructions Alternate if Option

MPI-II VHF specifications

The Ericsson MPI-II VHF is a cutting-edge mobile radio communication system designed to facilitate reliable and efficient communication in various environments. Featuring advanced technologies, the MPI-II is particularly suited for organizations that require dependable communication under challenging conditions, such as public safety agencies, transportation services, and other sectors where operational continuity is essential.

One of the hallmark features of the Ericsson MPI-II VHF is its robust construction, making it resilient against environmental stresses such as temperature fluctuations, humidity, and mechanical shocks. This durability ensures that it can withstand the rigors of outdoor operations and maintain functionality in harsh conditions.

The MPI-II operates on the Very High Frequency (VHF) range, allowing for long-range communication capabilities. This is particularly advantageous in scenarios where coverage needs to extend over large areas, such as in rural or mountainous regions. The design of the radio system also enables it to provide clear audio quality, which is critical for effective communication, especially in emergencies.

Another significant technology integrated into the MPI-II is its digital signal processing (DSP) capabilities. This feature enhances audio clarity even in high-interference environments, reducing background noise and ensuring that critical messages are conveyed effectively. This level of clarity can be a lifesaver in urgent situations where miscommunication can lead to severe consequences.

The radio also supports a wide range of accessories, including microphones and headsets, allowing for customized solutions tailored to specific operational needs. User-friendly interfaces and programmable features enable users to configure the device to their preferences, improving efficiency in communication.

Moreover, the Ericsson MPI-II VHF incorporates secure communication technologies to ensure that sensitive information remains protected from unauthorized access. This feature is crucial for sectors that deal with confidential data and require assurance against potential breaches.

In terms of energy efficiency, the MPI-II is designed to consume less power, extending the operational lifespan during field use. This is critical in situations where access to power sources is limited.

With its blend of durability, advanced digital processing, secure communication, and energy-efficient design, the Ericsson MPI-II VHF stands out as a reliable solution for professional communication across various industries. It embodies the evolving landscape of mobile communication technology, ensuring that users remain connected and informed in any situation.
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