5-4

Radio Alignment Procedures: Transmitter Alignment Options

 

 

1.Under Tx Align menu, select Reference Oscillator Warp (Figure 5-3).

2.There is only 1 frequency point shown which is always the last non-0 transmit frequency point, which will normally be F7.

3.Click on the slider thumb and press PTT Toggle to key up the radio at the corresponding fre- quency point.

4.Monitor the transmit frequency.

5.Adjust the slider, spin or edit control (press ENTER to confirm selection/send a softpot value) until the frequency is as close as possible to the indicated transmit frequency. (Refer to Table 5-2).

6.Dekey the radio by pressing PTT Toggle.

7.Program the warp value into the radio by pressing the Program button.

8.Exit the Reference Oscillator Warp function.

Table 5-2. Reference Oscillator Specifications

RF Band

Target

 

 

VHF (146-174)

±174 Hz

 

 

UHF Band 1 (403-440)

±440 Hz

 

 

UHF Band 2 (438-470)

±470 Hz

 

 

UHF Band 3 (465-495)

±495 Hz

 

 

5.4.2Modulation Balance Attenuation

Note: When using test box RLN4460:

•Inject the signal into the radio via the METER IN terminal and

•Set the METER IN selector switch to “VOL”.

•Inject the signal into the radio via the AUDIO IN terminal.

•Set the METER OUT toggle switch to the “MIC PORT” position

•Set the METER OUT selector switch to “MIC”.

Figure 5-4. Modulation Balance Window

December 3, 2003

HKLN4215A

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Image 33
Motorola EP450 service manual Modulation Balance Attenuation, Under Tx Align menu, select Reference Oscillator Warp Figure
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EP450 specifications

The Motorola EP450 is a robust and reliable two-way radio that has made a significant impact in the world of professional communications. Known for its solid construction and exceptional performance, the EP450 is a popular choice among various industries, including security, transportation, and event management.

One of the standout features of the Motorola EP450 is its impressive audio quality. Equipped with advanced audio processing technologies, the radio offers clear and crisp sound, ensuring effective communication even in noisy environments. This feature is particularly beneficial for users who work in fields where situational awareness and timely communication are crucial.

The EP450 operates on both VHF and UHF frequency bands, making it versatile for various communication needs. With 16 channels and a wide frequency range, users can easily switch between channels to avoid interference and ensure secure communications. Additionally, the radio offers a programmable feature, allowing users to customize button functions and settings, which enhances the overall user experience.

The battery life of the EP450 is another notable characteristic. It comes powered with a long-lasting rechargeable battery that provides extended usage on a single charge. This ensures that users can rely on the device throughout their shifts without concerns about running out of power. Furthermore, the EP450 features a battery save mode that helps conserve energy when the radio is not in use.

In terms of design, the Motorola EP450 is built to withstand tough environments. Its rugged housing is dustproof and can withstand exposure to water, making it suitable for outdoor use. Additionally, the radio's user-friendly interface includes a large display and oversized buttons, allowing users to operate it easily even with gloves or in challenging conditions.

Furthermore, the EP450 supports various accessories, such as headsets and external microphones, enhancing usability and flexibility in various operational scenarios. This adaptability allows users to customize their communication solutions based on specific needs.

In conclusion, the Motorola EP450 stands out for its superior audio quality, versatile frequency operation, long-lasting battery life, and rugged design. These features make it an indispensable tool for professionals who require reliable communication in demanding environments, proving its value across a multitude of industries.
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