SCANNING OPERATION

SCANNING FEATURES

This transceiver contains a wide variety of scanning capabilities. Whether you are in the VFO mode or one of the memory modes, scanning operation is fundamentally identical in all configurations, but with the following differences:

rIn the VFO mode, scanning causes the transceiver to sweep up or down the band, paus- ing or halting on any signal encountered;

rIn the Memory mode, the scanner will scan the programmed memories, and can be in- structed to skip certain memories during scanning;

rIn the Programmable Memory Scan (PMS) mode, the scanner will scan the band within user-programmed frequency limits.

SCANNING OPERATION

In order for the FT-857to scan automatically, the Squelch must be set so that the back- ground noise is silenced, because the command to “Stop Scanning” driven by the same circuit that causes the green “Busy” LED to light up (when noise or a signal is received).

1.Set the SQL knob to the point where background noise is silenced. A typical setting, for effective scanning operation, will be at 12 o’clock or slightly clockwise from this position.

2.Set the transceiver into the operating configuration in which you wish to scan (VFO or Memory; PMS will be described later).

3.Press the [FUNC] key momentarily, then rotate the SELECT knob, as needed, until Multi Function Row “g” [SCN, PRI, DW] appears on the display.

4.Wait at least five seconds, until the “MFg” notation disappears, then press the [A](SCN) key momentarily to start upward scan (toward higher frequencies or higher memory channel numbers).

5.Rotate the DIAL knob or SELECT knob counterclockwise to toggle the scanning direc- tion downward.

6.The scanner will now cause the transceiver to increment in the chosen direction until a signal is detected. When a signal is encountered which opens the Squelch, it will do different things, depending on the operating mode:

¦In the FM/AM modes, the transceiver pauses on the signal and stays locked on its frequency for five seconds. Thereafter, scanning will resume whether or not the other station’s transmission has ended. While the transceiver is in the “Pause” condition, the decimal points in the frequency display area will blink. See “Scan-Resume Choices” in the next chapter for details of how to customize the resumption of scanning.

¦In the SSB/CW modes, the scanner will slow down (but won’t stop).

7.Press the PTT switch on the microphone to cancel scanning.

You may also press and hold in either the [UP] or [DWN] key on the microphone for one second to initiate upward or downward scanning, respectively, if Menu

Mode No-058 [MIC SCAN] is set to “ON.”

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FT-857 Operating Manual

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Vertex Standard FT-857 manual Scanning Operation, Scanning Features
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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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