TRANSMITTER OPERATION

SSB/AM TRANSMISSION

AF Speech Processor Operation

The AF Speech Processor increases your average power output while operating on SSB and AM modes.

1.Press the [FUNC] key, then rotate the SELECT knob, as necessary, to recall Multi Function Row “c” [STO, RCL, PROC].

2.Press the [C](PROC) key to activate the AF Speech Processor. The “u” icon will appear at the left side of the “PROC” notation.

3.Now press the PTT key (unless you have VOX enabled), and speak into the microphone in a normal voice level, as usual.

4.To deactivate the AF Speech Processor, again press the [C](PROC) key.

5.The Compression Level may be adjusted via the Menu, as follows:

ŸWhile still in Multi Function Row “c” [STO, RCL, PROC], press and hold in the [C](PROC) key for one second. This instantly recalls Menu Mode No-074[PROC LEVEL].

ŸRotate the DIAL to set a new level of Compression (the default value is “50”).

ŸWhen you have made your selection, press and hold in the [FUNC] key for one second to save your new setting and return to normal operation.

ŸMake some on-the-air checks, or use a monitor receiver in your station, to ensure that good voice quality has been obtained via your adjustment.

Excessive advancement of the Compression Level may lead to distortion. Each operator’s voice pattern is different, so try several settings to find the one which is

best for your voice.

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FT-857 Operating Manual

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Vertex Standard FT-857 manual AF Speech Processor Operation
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FT-857 specifications

The Vertex Standard FT-857 is a compact and versatile all-mode transceiver that has become popular among amateur radio operators since its introduction. With its ability to operate in VHF, UHF, and HF bands, the FT-857 caters to a diverse range of communication preferences and provides exceptional performance for both mobile and base station applications.

One of the key features of the FT-857 is its coverage of a broad frequency range, spanning from 160 meters to 2 meters and covering the 70 cm band. This wide frequency coverage allows amateur operators to communicate with fellow enthusiasts across various bands, ensuring versatility in operational environments. The FT-857 offers an output power of up to 100 watts on HF and 50 watts on VHF/UHF, providing sufficient power for effective communication, whether in local or distant contacts.

Another distinctive characteristic of the FT-857 is its all-mode capability. It supports various modes of operation, including SSB, CW, AM, and FM, making it suitable for different operating styles and preferences. The inclusion of advanced digital signal processing (DSP) technology enhances audio clarity and offers noise reduction features, which are crucial in crowded bands. This DSP capability also aids in improving signal quality and overall communication experience.

Portability is a significant advantage of the FT-857. Its compact size and lightweight design make it an excellent choice for field operations and portable setups. Additionally, the transceiver is well-equipped with features such as built-in memory channels, allowing users to save and quickly access frequently used frequencies. The FT-857 also includes a built-in automatic antenna tuner, which makes it easier for operators to set up and optimize their antenna configurations without requiring additional external devices.

The FT-857 is designed with user-friendly controls and a clear LCD display, enabling operators to quickly adjust settings and monitor communication details without confusion. The visibility of the display is especially vital for use in different lighting conditions, ensuring that users can operate efficiently whether in bright sunlight or low light conditions.

In summary, the Vertex Standard FT-857 is a highly capable, compact transceiver that offers an effective solution for amateur radio communication. With its all-band, all-mode capabilities, robust DSP technology, and user-friendly design, the FT-857 remains a popular choice for both enthusiasts and professionals alike, facilitating engaging communication experiences across multiple bands and modes.
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