TRANSMITTER OPERATION

DIGITAL MODE OPERATION (SSB-BASED AFSK)

2.Press the [MODE(t)] or [MODE(u)] key, as needed, to select the DIG operating mode (the “DIG” icon will appear on the display).

3.Now use Menu mode to configure the transceiver’s passband response. Once in the Menu mode, rotate the SELECT knob to select Menu Mode No-039[DIG SHIFT], and rotate the DIAL knob to set the desired BFO offset. (a center frequency for the receiver response). For WSJT use, a setting of about “+1500” will be a good starting point.

4.Finally, depending on how you wish the display to respond, you may program in a corre- sponding display shift, using Menu Mode No-036[DIG DISP].

5.Remember to press and hold in the [FUNC] key for one second when exiting the Menu mode.

The setup of the AFSK drive level is identical to that described previously for RTTY opera- tion.

The USER-L and USER-U Digital modes should allow you to operate on any SSB-based AFSK Digital mode. Note that the “PSK31” configurations will also

work well for many Digital operating situations.

PACKET (1200/9600 BPS FM) OPERATION

The FT-857is designed for operation on either 1200 bps or 9600 bps packet, and setup is similar to that described previously for SSB-based modes. A separate Data input adjustment is provided, allowing you to optimize the deviation on the FM Packet modes separately from the levels set for SSB-based Digital modes. The RX-Data output lines are fixed-level outputs, not affected by the setting of the AF Gain control.

1.Connect your TNC to the FT-857’s rear-panel DATAjack, per the illustration.

2.Note that different connections are used for 1200 bps and 9600 bps Packet.

3.Use Menu Mode No-073[PKT RATE] to select the de- sired Packet mode.

4.Once you have entered the Menu and have selected Menu Mode No-073[PKT RATE], rotate the DIAL knob to se- lect either “1200bps” or “9600bps” as the Packet rate. Press and hold in the [FUNC] key for one second to save your setting and exit.

5.Press the [MODE(t)] or [MODE(u)] key, as needed, to select the PKT operating mode (the “PKT” icon will appear on the display).

You are now set up for reception on Packet. If you are oper-

GND

DATA OUT

DATA DATA

IN OUT

DATA OUT (1200bps) (9600bps)

PTT

PTT

DATA IN

FT-857 Operating Manual

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Vertex Standard FT-857 manual Packet 1200/9600 BPS FM 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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