INSTALLATION

POWER CONNECTIONS

The DC power connector for the FT-857must only be connected to a DC source providing

13.8Volts DC (±15%), and capable of at least 22 Amperes of current. Always observe proper polarity when making DC connections:

The Red DC power lead connects to the Positive (+) DC terminal; and the Black DC power lead connects to the Negative (–) DC terminal.

In mobile installations, noise pickup may be minimized by connecting the DC cable directly to your vehicle’s battery, rather than to the ignition switch or “accessory” circuitry. Direct connection to the battery also provides the best voltage stability.

MHzAntenna

MHz/430MHzAntenna

HF/50MHzAntenna

144MHz/430MHzAntenna

To

To

Supplied DC Cable

Cigarette Lighter Plug

Fuse Box

12V Battery

FUSE: 25A

RED BLACK

ToHF/50

To144

FP-1030A

0

5

10

15

20

0

5

20

30

40

 

 

V

 

 

 

A

 

 

O V E R L O A D

CONTINUOUS CURRENT 25A

POWER

ON

OFF

FUSE: 25A

RED

BLACK

Supplied DC Cable

8

FT-857 Operating Manual

Page 9 Page 11
Page 10
Image 10
Vertex Standard FT-857 manual Power Connections
Page 9 Page 11

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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