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Vertex Standard FT-857 manual DSP CW Peaking Filter DBF Requires Optional DSP-2 Unit

Models: FT-857

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RECEIVER ACCESSORIES

DSP CW PEAKING FILTER (DBF) (REQUIRES OPTIONAL DSP-2 UNIT)

In the CW mode, pressing the [C](DBF) key in Multi Function Row “p” [DNR, DNF, DBF] activates a narrow-bandwidth peaking filter, which may be ideal for use under very crowded conditions. The DSP CW Peaking Filter also is especially helpful under VHF/UHF weak- signal situations.

The center frequency of the DSP CW Peaking Filter is automatically aligned to be centered on the response you have selected via the Menu Mode in item No-027[CW PITCH]. See page 101 for details.

1.To change the bandwidth of the DSP CW Peaking Filter:

2.Press and hold in the [C](DBF) key for one second on the CW mode. This instantly activates Menu Mode No-045[DSP BPF WIDTH], which allows selection of the band- width of the DSP CW Peaking Filter.

3.Rotate the DIAL to select the desired bandwidth. The available values are 60 Hz, 120 Hz, and 240 Hz (default value: 240 Hz).

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

DSP NOISE REDUCTION (DNR) (REQUIRES OPTIONAL DSP-2 UNIT)

The Noise Reduction feature of the DSP system may be used to enhance signal-to-noise ratio on weak signals.

1.Press the [DSP] key momentarily. This instantly activates Multi Function Row “p” [DNR, DNF, DBF].

2.Press the [A](DNR) key to activate the DSP Noise Reduction feature. The “u” icon will

appear at the left side of the “DNR” indication, and the “” notation will appear at the top on the display.

3.Now press and hold in the [A](DNR) key for one second. This instantly activates Menu Mode No-049[DSP NR LEVEL], which allows adjustment of the DSP Noise Reduction level.

4.Rotate the DIAL to find the point where best signal-to-noise ratio is obtained under the current noise conditions.

5.Press and hold in the [FUNC] key for one second to save the new setting and exit to normal operation.

6.To turn off the DSP Noise Reduction feature, press the [A](DNR) key again.

If noise is present at a level which causes indication on the S-meter, the perfor- mance of the Noise Reduction filter may be enhanced by rotating the SQL/RF (RF Gain) control in a counter-clockwise direction so as to set the (fixed) S-meter read-

ing at the same level as the noise peaks. This adjustment raises the AGC threshold of the receiver.

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FT-857 Operating Manual

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Vertex Standard FT-857 manual DSP CW Peaking Filter DBF Requires Optional DSP-2 Unit
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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.