man_ft-920.pdf

FT-920

OPERATING

YAESU MUSEN CO., LTD.

1-20-2 Shimomaruko, Ota-Ku, Tokyo 146-8649, Japan

YAESU U.S.A.

17210 Edwards Rd., Cerritos, CA 90703, U.S.A.

YAESU EUROPE B.V.

Snipweg 3, 1118DN Schiphol, The Netherlands

YAESU UK LTD.

Unit 12, Sun Valley Business Park, Winnall Trading Estate

Winchester, Hampshire, SO23 0LB, U.K.

YAESU GERMANY GmbH

Am Kronberger Hang 2, D-65824 Schwalbach, Germany

YAESU HK LTD.

11th Floor Tsim Sha Tsui Centre, 66 Mody Rd.,

Tsim Sha Tsui East, Kowloon, Hong Kong

MANUAL

Table of Contents

General Description ......................................................... 1

Specifications ................................................................... 2

Accessories & Options ................................................... 4

Plug Pinout ...................................................................... 5

Installation ........................................................................ 6

Preliminary Inspection ................................................. 6

DC Power Connections ............................................... 6

Transceiver Location ................................................... 8

Grounding .................................................................... 8

Antenna Considerations .............................................. 9

Memory Backup .......................................................... 9

Adjusting the Front Feet ................................................10

Safety Precautions ............................................................ 11

1. Power Connections ................................................ 11

2. Ground Connections .............................................. 11

3. Electrical Shock Prevention ................................... 11

4. Antenna Precautions ................................................11

5. RF Field Exposure Advisory

and Electromagnetic Compatibility .................. 12

Accessory Installation ..................................................... 13

1. Lineae Amplifier Interfacing ................................... 13

2. Digital Modem Interfacing (TNC, WeatherFax, etc.)...16

3. Other Digital/Recording Device Interfacing ...............17

4. CW Key/Paddle and Computer Keying

Interface Suggestions .................................... 18

Front Panel Controls, Switches, & Jacks ..................... 20

Display Panel Indicators and Icons ............................... 28

Rear Panel Connectors and Switches ........................... 32

Bottom Panel ................................................................... 34

Operation .......................................................................... 35

Before You Start ......................................................... 35

Receiving ..................................................................... 35

Antenna Selection ................................................. 35

Bandwidth Selection .............................................. 37

Amateur Band Selection ....................................... 37

Direct Keypad Frequency Entry ............................ 38

Stacked VFO System ........................................... 38

Frequency Navigation ............................................ 38

VFO Tuning Dial ............................................. 39

Shuttle Jog (VFO-A) ....................................... 39

Front Panel Up/Down Switches ...................... 39

MH-31B8 Hand MicU P /D WN /F ST Switches ...... 39

MD-100A8X Desk Microphone

Rotary Scanning Switch ............................ 39

L OCK Switches ................................................. 39

Operating Convenience Features ...........................40

Display Brightness Control .............................. 40

Keypad Beep Frequency/Level ....................... 40

Receiver Accessories ............................................ 41

Clarifier (Offset Tuning) ................................... 41

CW Center Tuning (Enhanced Tuning Scale) ...41

CW S POT ......................................................... 41

RF Preamplifier Selections ............................. 41

AGC Selection ................................................ 42

Squelch ........................................................... 42

General Coverage Reception .......................... 42

Dealing with Interference ...................................... 43

S HIFT Control ................................................... 43

H IGH C UT /L OW C UT Controls (DSP) .................. 43

N OTCH Filter (DSP) .......................................... 44

RF G AIN Control .............................................. 44

IF Noise Blanker (NB) .................................... 44

DSP Noise Reduction (NR) ............................ 44

Tools for Strong-Signal

andLow-Frequency Operation .................. 45

IPO (Intercept Point Optimization) .................. 45

ATT (Front End Attenuator) ............................ 46

Digital Voice Recorder Operation (DVR) ........ 46

Transmitting ................................................................. 47

Automatic Antenna Matching ................................ 47

SSB Transmission ................................................. 49

Basic Operation ............................................... 49

VOX Operation ................................................ 49

Digital Speech Processor Operation ............... 49

DSP Voice Pattern Contours ......................... 50

Voice Monitor Operation ................................. 50

Digital Voice Recorder Operation (Transmit) .. 50

Linear Amplifier Tuning ............................................... 51

CW Transmission .................................................. 51

Straight Key Operation .................................... 51

Electronic Keyer Operation ............................. 52

Memory Keyer Operation ................................ 52

Tips for Successful CW Memory Keyer Operation ..... 53

Split Frequency Operation .................................... 54

TX C LAR ifier Operation .................................... 53

Split VFO Operation ........................................ 54

Quick Split Feature ......................................... 54

Mode K Satellite Operation ............................. 55

Digital Mode Operation ......................................... 55

AFSK RTTY or Packet Operation .................. 56

FSK RTTY Operation ...................................... 56

AM Transmission .................................................. 57

Basic Operation ............................................... 57

FM Operation ........................................................ 58

Simplex (Non-Repeater) Operation ................. 58

Repeater Operation ......................................... 58

Memory Operation ........................................................... 59

QMB Channel Programming/Recall ............................. 59

Memory Operation on “Regular” Memory Channels

(Channel #1-01 to 1-99) ........................................ 60

Memory Operation on Split-Frequency Channels

(Channel #d-01 to d-10) ........................................ 62

Memory Operation on “CALL” Channels

(Channel #C-01 to C-11) ...................................... 63

Adding Alpha-Numeric Labels to Memory Channels .. 64

Memory Mode Accessories ......................................... 65

Moving Memory Data to VFO-A ........................... 65

Deleting Data from a Memory Channel ................ 65

Scanning Operation ......................................................... 66

Scanning Operation ..................................................... 66

Scan Skip Programming (Memory Mode Only) .......... 66

Programmable Memory Scan (PMS) Operation ......... 66

Scan-Resume Choices ................................................ 67

Dual Watch Operation ..................................................... 68

Menu Operation ............................................................... 69

Normal Menu Operation .............................................. 69

Panel Menu Operation ................................................ 70

Quick Menu Operation ................................................ 70

Menu Mode Selections and Settings .......................... 73

VHF/UHF Transverter Operation ..................................... 84

Phone Pacth Operation ................................................... 85

Data Protocol .................................................... 88

Constructing Sending CAT Commands ...................... 88

Downloading FT-920 Data ........................................... 89

14-Byte Frequency Data Record Structure ................. 90

Memory Backup ............................................................... 91

Microprocessor Resetting ............................................... 92

Installation of Optional Accessories .............................. 93

Bottom Case Removal ................................................ 93

Installation of Optional Filters YF-116C/YF-116A ....... 94

Installation of High-Stability Oscillator TCXO-7 ........... 94

Installation of FM Unit FM-1 ....................................... 94

(Computer-Aided Transceiver) System Protocol ......... 86

Congratulations on the purchase of your Yaesu FT-920! Whether this is your first rig, or if Yaesu equipment is

already the backbone of your amateur radio station, it is our sincere hope that you will derive many years of

operating enjoyment from your new transceiver.

The FT-920 is a state-of-the-art amateur transceiver incorporating a multitude of advanced features to give you

the competitive edge in a wide variety of operating applications. The FT-920 offers up to 100 Watts of adjustable

power output on all amateur bands between 160 meters and 6 meters (25 Watts carrier in the AM mode),

utilizing rugged, low-distortion MOS FET final amplifier transistors. Operation in the SSB, CW, AM, AFSK, and

FSK modes is built in, and an FM module is available as an option.

Yaesu’s renowned Omni-Glow™ LCD display provides a wealth of information regarding transceiver status, and

it includes enhanced tuning aids for many operating applications.

The built-in high-speed automatic antenna tuner may be utilized both on receive and transmit, providing im-

proved impedance matching for the transmitter and protection from out-of-band signals on receive. A built-in

Digital Voice Recorder allows storage and playback of incoming signals, and also allows you to store up to four

repetitive messages (such as “CQ Contest. . .”) of up to 16 seconds each. And the Electronic Memory Keyer

also provides storage of CW messages, including incremented, imbedded contest numbers, to reduce operator

fatigue in contests. Independent K EY jacks on the front and rear panels allow connection of keyer paddles to one

jack and a computer or straight key to the other, for optimum contest work. A CW Pitch control and Spot tone

provide efficiency in operating, and both full QSK and semi-break-in CW (VOX switching) are provided.

The receiver section is highlighted by the high-performance Digital Signal Processing filters, which provide

razor-sharp selectivity, an automatic seeking Notch filter, and Noise Reduction. The high-intercept front end

circuitry includes ten input bandpass filters with PIN diode switching, optimized RF preamplifiers for both high

and low bands, and Intercept Point Optimization (IPO) for high-signal, high-noise environments. A separate

receive-only antenna jack is provided, in addition to the two main TX/RX jacks, for connection of a Beverage or

other low-noise receiving antenna.

Yaesu’s exclusive Shuttle Jog tuning dial provides simple yet quick frequency excursions around the band.

Independent tuning knobs for the two VFOs join direct keyboard frequency entry, one-touch band change, and

extensive scanning capabilities to make the FT-920 a joy to use. And the FT-920’s extensive memory system,

sporting 99 regular memories, ten split-frequency memories, five QMB (Quick Memory Bank) channels, and an

easy-access “C ALL ” channel for each band, provides the utmost in operating ease. Each of the memories (ex-

cept the QMB channels) can be assigned an alpha-numeric label of up to seven characters, to aid in memory

channel identification.

A host of convenience features is provided, including a Digital Speech Processor, SSB monitor circuit, all-mode

Squelch, VOX, and a continuously-variable RF power control. Yaesu’s CAT System for external computer con-

trol includes a built-in RS-232C level converter and DB-9 serial port on the rear panel, for easy connection to

your home computer. And the extensive Menu system allow the owner to configure literally dozens of transceiver

performance characteristics, such as voice audio response patterns, keyer weight, tuning steps, and power

output to be applied to each antenna jack. The FT-920 clearly is the cost-performance leader in the Amateur

Radio industry today!

Please take some time to familiarize yourself with the many features available in the FT-920, as described in the

pages to follow. At Yaesu, we appreciate your investment in this fine transceiver, and we hope that you will take

the time to read this manual thoroughly so as to get the most out of your new FT-920!

FT-920 Operating Manual

General

Receiving Frequency Range:

100 kHz ~ 30 MHz, 48 ~ 56 MHz

Transmitting Frequency Range:

160 ~ 6 Meter Amateur Bands

Operating Temperature Range:

-10º ~ +50º C

Frequency Stability:

±10 ppm; ±2 ppm w/TCXO-7

Frequency Accuracy:

< ±7 ppm (FM within ± 500 Hz)

w/TCXO-7: < ±3.5 ppm (FM within ± 460 Hz)

Emission Modes:

USB/LSB, CW, AM, FM, FSK, AFSK

Frequency Steps:

1 Hz/10 Hz/100 Hz for SSB/CW/FSK/AFSK

10 Hz/100 Hz/1000 Hz for AM/FM

Antenna Impedance:

, unbalanced

Antenna Tuner Matching Range:

16.5

~ 150

Power Consumption:

Input

Rx (no signal)

Rx (Signal present)

Tx (100W)

13.5 VDC 2.0A

2.5A

22A

Supply Voltage:

13.5 VDC (±10%), negative ground

Dimensions:

410(W) x 135(H) x 316(D) mm

Transmitter

Power Output: 160 m ~ 10 m amateur bands

Adjustable up to 100 Watts (25 Watts AM carrier)

6 m amateur band

Adjustable up to 100/10 Watts (25/2.5 Watts AM carrier)

Modulation Types: SSB: J3E Balanced, filtered carrier

AM: A3E Low-level (early stage), (w/optional YF-116A AM Filter)

FM: F3E Variable reactance PM

FSK: J1D/J2D Audio-Frequency-Shifted Keying

Maximum FM Deviation: ±2.5 kHz (narrow), ±5.0 kHz (wide)

FSK Shift Frequencies: 170, 425, and 850 Hz

Packet Shift Frequency: 200 Hz

Harmonic Radiation: At least 50 dB below peak output (HF)

At least 60 dB below peak output (VHF)

SSB Carrier Suppression: At least 40 dB below peak output

Undesired Sideband Suppression: At least 50 dB below peak output

Audio Response (SSB, DSP Off): Not more than -6 dB from 400 to 2600 Hz

SSB 3rd-order IMD:

-31 dB or better @ 100 Watts PEP (14 MHz)

Microphone Impedance:

500

~ 600

FT-920 Operating Manual

Receiver

Circuit Type:

Double-conversion Superheterodyne (FM: Triple-conversion)

Intermediate Frequencies:

68.985 MHz

8.215 MHz

455 kHz (FM)

Sensitivity:

Frequency SSB/CW/Dig.(2.4 kHz) AM (6 kHz) FM (28 MHz +)

150 ~ 250 kHz 5 µV 40 µV —

250 ~ 500 kHz 4 µV 32 µV —

0.5 ~ 1.8 MHz 2 µV 16 µV —

1.8 ~ 24.5 MHz 0.20 µV 2 µV 0.5 µV

24.5 ~ 54 MHz 0.13 µV 1.3 µV 0.25 µV

(With Preamp On, for 10 dB S+N/N or 12 dB FM SINAD)

IF Selectivity (-6/-60 dB):

SSB, CW, FSK, AFSK 2.4 kHz/5.0 kHz

CW 500 Hz/1.8 kHz (w/optional YF-116C CW Filter)

AM 6 kHz/14 kHz (w/optional YF-116A AM Filter)

FM 12 kHz/25 kHz (w/optional FM-1 FM Unit)

Squelch Sensitivity (IPO Off):

SSB/CW/Digital/AM: <2.0 µV

FM (28-56 MHz):

<0.32 µV

IF Rejection:

>70 dB (HF)

>50 dB (VHF)

Image Rejection:

>70 dB (1.8 ~ 56 MHz)

IF Shift Range:

±1.2 kHz

DSP Notch Depth:

>35 dB

Audio Output:

with <10% THD (Speaker)

100 mV @ 600

(Digital, fixed level)

Audio Output Impedance (SPKR): 4

~ 8

Automatic Antenna Tuner

Impedance Range:

16.7

~ 150

(1.8 ~ 30 MHz)

25.0

~ 100

(50 ~ 54 MHz)

Frequency Range:

160 m ~ 6 m amateur bands

Matching Time:

<30 seconds

Matched SWR:

<1.4:1

Specifications are subject to change, in the interest of technical improvement, without notice or obligation. Specifications

are guaranteed only within Amateur bands.

FT-920 Operating Manual

1.5 W into 4

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