P1
DTMF MICROPHONE
MH-59

APPENDIX

MH-59A8J REMOTE MICROPHONE

The optional MH-59A8JRemote Microphone provides control of the major functions of the FT-857from the microphone’s keypad. The MH-59A8Jincludes a rotary control knob for adjust the operating frequency and receiver audio volume level.

Before connecting the MH-59A8J, you must instruct the FT-857’s microprocessor that the MH-59A8Jis being used, using the Menu Mode:

1.Press and hold in the [FUNC] key for one second to activate the Menu Mode.

2.Rotate the SELECT knob to recall Menu Mode No-001[EXT MENU], then rotate the DIAL to change the setting to “ON” to enable the extended Menu Mode.

3.Rotate the SELECT knob to recall Menu Mode No-059[MIC SEL]. The default setting for this Menu is “NOR.” Rotate the DIAL to change the setting to “RMT.”

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

MH-59A8JSwitches and Control

LOCK Switch

Pressing this key locks the FT-857’s front panel keys so as to prevent accidental frequency change.

PTT Switch

Press this switch to transmit, and release it to receive.

Keypad

123 A

456 B

789 C

0 D

[1(DSP)] key

 

 

Pressing this key provides instant access to Multi Function

C

P2

 

A

 

 

C

 

Row “p” (MFp), which contains the command keys for the receiver’s Digital Signal Processing System (requires optional

DSP-2Unit). This key generates the DTMF “1” tone during transmission, and frequency entry digit “1” during Direct Keypad Frequency Entry.

[2(MHz)] key Pressing this key allows tuning in 1-MHz steps of the VFO frequency.

This key generates the DTMF “2” tone during transmission, and frequency entry digit “2” during Direct Keypad Frequency Entry.

[3(CLAR)] key

Pressing this key momentarily activates the Receiver Clarifier (“R.I.T.”) feature. Press and hold in this key for one second to activate the IF Shift feature.

This key generates the DTMF “3” tone during transmission, and frequency entry digit “3” during Direct Keypad Frequency Entry.

FT-857 Operating Manual

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Vertex Standard FT-857 manual MH-59A8JSwitches and Control Lock Switch, MH-59A8J Remote Microphone
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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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