SCANNING OPERATION

PROGRAMMABLE MEMORY SCAN (PMS) OPERATION

To limit scanning (and manual tuning) within a particular frequency range, you can use the Programmable Memory Scanning (PMS) feature, which utilizes five special-purpose memory pairs (“M-P1L/M-P1U” through “M-P5L/M-P5U”). The PMS feature is especially useful in helping you to observe any operating sub-band limits which apply to your Amateur license class.

PMS setup is simple to accomplish:

1.Store the upper and lower frequency limits of the desired range into the PMS memory pair (“M-PxL” and “M-PxU”), where the “U” channel represents the Upper frequency limit, and the “L” channel represents the Lower frequency limit.

2.Press the [FUNC] key momentarily, then rotate the SELECT knob, as needed, until Multi Function Row “f” [ARTS, SRCH, PMS] appears on the display.

3.Press the [C](PMS) key. The “PMS-x” indication will appear at the upper left corner of the LCD, signifying that the PMS feature is engaged. Tuning and scanning (by pressing the [A](SCN) key on the Multi Function Row “g” [SCN, PRI, DW]) are now limited within the range between the selected PMS memory pair, keeping operation inside this programmed range.

Example: Limit tuning and scanning to the frequency range 144.30 - 148.00 MHz, to pre- vent encroachment into the “Weak Signal” (SSB/CW) portion of the 2-meter band:

1.Press the [V/M] key, as necessary, to recall the VFO mode. Tune the SELECT or DIAL knob to 144.300 MHz.

2.Press the [FUNC] key momentarily, then rotate the SELECT knob, as needed, until Multi Function Row “b” [MW, SKIP, TAG] appears on the display.

3.Press the [A](MW) key momentarily, then turn the SELECT knob to select memory channel “M-P1L.”

4.Press and hold in the [A](MW) key for one second to write the VFO frequency into “M- P1L.”

5.Now, tune the SELECT or DIAL knob to 148.000 MHz.

Press the [A](MW) key momentarily, then turn the SELECT knob to select memory channel “M-P1U.”

6.Press and hold in the [A](MW) key for one second to write the VFO frequency into “M- P1U.”

7.Press the [FUNC] key momentarily, then rotate the SELECT knob one click clockwise to recall Multi Function Row “f” [ARTS, SRCH, PMS].

8.Press the [C](PMS) key momentarily. Tuning and scanning are now limited to the 144.30 - 148.00 MHz range until you press the [V/M] key to return to memory or VFO operation.

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FT-857 Operating Manual

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Vertex Standard FT-857 manual Programmable Memory Scan PMS 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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