Geräte Informationen:

Yaesu FT-900 Transceiver
Hersteller:
Yaesu
Modell: FT-900
Datum: 1994
Kategorie: Funk und Kommunikation
Gruppe: Transceiver
Beschreibung:
Informationen:
                                    Specification
General

Receiving frequency range: 100 kHz ~ 30 MHz Transmitting
frequency ranges:

160 - 10 meter Amateur Bands

Frequency stability: ±10 ppm (SSB, CW, AM) from -10° - +50°
C or ±2 ppm from 0° ~ 50° C (SSB. CW, AM w/TCXO-3 option)

Emission modes: USB, LSB(J3E), CW(A1A), AM(A3E), FM (F3E)

Frequency Tuning Steps:

2.5 Hz/ 5.0 Hz/ 10 Hz (CW, SSB) 100 Hz (AM, FM)

Antenna impedance: 50 Ω nominal(w/o ATU)

16.7 -150 Ω with ATU (unbalanced)

Operating temp, range: -10° C ~ +50° C

Supply voltage: 13.5-VDC ±10%, negative ground

Power consumption (approx): 1.5 A rx (no signal)

20 A tx( 100 watts)

Dimensions (WHD): 238 x 93 x 253 mm (w/o knobs) Weight
(approx): 5.3 kg

Folgende Anleitungen sind für obiges Gerät verfügbar:

Yaesu -- FT-900 -- Serviceanleitung
Dateiname: Yaesu-6237-Manual-Page-1-Picture
Dokumenttyp: Serviceanleitung
Seitenanzahl: 173
Dateigröße: 27.52 Mbytes (28861222 Bytes)
Sprache: Englisch
Revision:
Dokument-ID/Nummer:
Datum: 1994
Qualität: Gescanntes Dokument, alles ist lesbar.
Upload Datum:
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ed2kID: f12808106b238bd349213eb2300de028
Downloads: 485 seit 27 Juli 2014
Informationen:
Introduction & Chip Component Replacement ...............1

Specifications...................................1-2

Circuit Board Access, Battery Replacement and CPU
Resetting......2

Alignment.....................................3

Circuit Description................................4

Block & Interconnection Diagrams.......................5

PCB Diagrams & Parts Lists...........................6

Local Unit...........................................6A

RF Unit, Notch
Unit..........................................................................6B

Control (CNTL)-l Unit...................................6C	^

Power Amp (PA) Unit....................................6D

LPF Unit............................................6E

CAR-DDSUnit................................................................................6F

SUB-DDS
Unit................................................................................6G

Control (CNTL)-2 Unit...................................6H

BLUnit........................................................................................61

SWUnit............................................6J

VR, MIC Unit.........................................6K

CONNECT-1/-2, SPJ Unit..................................6L

Mechanical Details (Exploded Views & Mechanical
Parts)....................7

Accessory & Options (parts)

ATU-2 Automatic Antenna Tuner
(option)........................8A-1

MH-31A8J Hand-Held Microphone (accessory).....................8B


This manual provides technical information necessary for
servicing the Yaesu FT-900 HF Transceiver. It does not
include information on specifications, installation and
operation, which are described in the FT-900 Operating
Manual, provided with each transceiver, or on FT-900
accessories, which are described in manuals provided with each.

Servicing this equipment requires expertise in handling
surface mount chip components. Attempts by non-qualified
persons to service this equipment may result in permanent
damage not covered by warranty. For the major circuit
boards, each side of the board is identified by the type of
the majority of components installed on that side. In most
cases one side has
only chip components, and the other has either a mixture of
both chip and lead components (trimmers, coils, electrolytic
capacitors, packaged ICs, etc.), or lead components only.
Yaesu-6237-Manual-Page-1-Picture
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