ft 897d service manual

Synthesizer Steps (Min.). Antenna Impedance. Operating Temp. Range. Frequency Stability. Supply Voltage. Current Consumption. Case Size (W x H x D). Weight (Approx.). Receive. Transmit:FNB-78 (Ni-MH Battery Pack): 13.2 V (Option). Squelched: 600 mA (Approx.). Receive: 1 A. Transmit: 22 ATransmitter. Modulation Types. FM Maximum Deviation. Spurious Radiation. Carrier Suppression. Opp. Sideband Suppression. SSB Frequency Response. Microphone Impedance:Receiver. Circuit Type. Intermediate Frequencies. Sensitivity. Squelch Sensitivity. Image Rejection. IF Rejection. AF Output. AF Output Impedance. Superheterodyne (WFM)Specifications are subject to change without notice, and are guaranteed within the amateur bandsBATT-CONN UnitNote:The FT-897 internal assembly consists of the MAIN. Unit, PLL Unit, PA Unit, Panel Unit, BATT-CONN Unit. REF Unit, MIC Unit, and the VR Unit. Receive Signal Circuitry. RF Stages. Signals between 0.1 and 56 MHz received at the antenna terminal pass through a low-pass filter, selectedThe filtered receiving signal passes, through one of theReceived 430 MHz signals, after passing through aC3210, C3219, C3223, and C3319, are passed throughThen the signals are fed toReceived 145 MHz signals, after passing through aC3200, C3203, C3220, and C3221, are passed through aC3176, C3179, and C3191, and a directional coupler, to. Then the signals are fedC3200, C3203, C3220, and C3221, are passed throughC3176, C3179, and C3191, and a directional coupler, to. D3020 (both UM9957F). Then it is fed to the Wide-FM. IF IC Q1058 (CXA1611N) on the MAIN Unit. The 1st mixer on the MAIN Unit consists of quad MOS. FET Q1128 (SPN5001), where the receiving signal isMHz) passes through monolithic crystal filter (MCF)The resulting output signal (455 kHz) is applied to theNoise Blanker Circuit. A portion of the 2nd IF signal is amplified by Noise. Blanker Amplifiers Q1075 and Q1079 (both. BB305CEW) on the MAIN Unit, and then rectified by. D1064 (1SS372).

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Please do not offer the downloaded file for sell only use it for personal usage. Looking for other manual? For this no need registration. May be help you to repair. You could suffer a fatal electrical shock. Instead, contact your nearest service center. Note! To open downloaded files you need acrobat reader or similar pdf reader program. In addition, Also some files are djvu so you need djvu viewer to open them. These free programs can be found on this page: needed progs If you use opera you have to disable opera turbo function to download file. If you cannot download this file, try it with CHROME or FIREFOX browser. Translate this page: Relevant OTHER forum topics: Yaesu FTL7002 UHF ado-vevo Sziasztok! Tudna valaki segiteni Yaesu FTL-7002 tip. URH ado-vevo mukodesi tartomanyanak a boviteseban. Nem talalok anyagot hozza.Most 450-490Mhz kozott mukodik, de nekem 430-450Mhz-ig kellene. Ha tud valaki segiteni megkoszonom. Udv:pandora yaesu FYG-3u hasznalata sziasztok.CsabaYou can write in English language into the forum (not only in Hungarian). Operating Manual PDF presentation brochure for Yaesu FT 897 (FT-897 FT897): Yaesu. FT-897 brochure PDF Service Manual with schematics for Yaesu FT 897 (FT-897 FT897): Yaesu. Page Count: 85 ALL MODE TransceiverInternational DivisionWinchester, Hampshire, SO23 0LB, U.K. Technical SupplementIntroduction. Servicing this equipment requires expertise in handling surface-mount chip components. Attempts by non-qualifiedTwo PCB layout diagrams are provided for each double-sided circuit board in the Transceiver. Each side of is referredIn most cases one side hasWhile we believe the technical information in this manual to be correct, VERTEX STANDARD assumes no liabilityYour cooperation in pointingContents. Specifications. 2. Block Diagram. 5. Circuit Description. 7. Alignment. 10. MAIN Unit. 21. PLL Unit. 53. PA Unit. 59. PANEL Unit. 73. MIC Unit. 81. VR Unit. 82. BATT-CONN Unit. 83. REF Unit. 84General. Frequency Range. Emission Modes.

The output (audio signal) from the electronic volumeMHz 2nd IF signal utilizing the 2nd local signal (68.875. MHz). The 2nd IF signal is fed through the 2nd IF filter. XF1004 which strips away unwanted mixer products, thenThe transmit signal is passed through a low-pass filter (1.8-29.7. MHz), a high-pass filter (50-54 MHz), a band-pass filterALC Circuit. The output from the directional coupler is routed fromThe ALC circuit consists of an op-amp circuit for amplifying the forward and reflected voltage, a time-constant. ALC amplifier, and a transmit signal control circuit onJ1001 on the MAIN Unit is added with a DC control voltage and is then applied to op-amp IC Q1111 (NJM2902V). The reflected voltage is added with a DC control voltageIn the event of high SWR conditions (SWR 3:1 or more),The ALC amplifier magnifies the forward wave output via transistor Q1009 (2SC4154). This output thenFET Q1061 (BB304CDW) of the 2nd IF amplifier circuit, to prevent the TX output from exceeding the presetPLL Frequency Synthesizer. The PLL Frequency Synthesizer consists mainly of theMaster Reference Oscillator Circuit. The master reference oscillator uses a Crystal Oscillator (oscillation frequency: 22.625 MHz) composed of. Q5001 (2SC4400-4), X5001, TC5001, C5001, and. R5005. The reference oscillator signal passes through aCAR-DDS Circuit REF-DDS Circuit. DDS ICs Q1062 (AD9835BRU), and Q2016The reference oscillationDDS Units is applied to each DDS IC after amplificationMHz for the REF DDS.VCO output is buffer-amplified by Q2011 (2SC5374)The 2nd LO circuit is a Hartley-type overtone oscillator circuit (frequency: 67.875 MHz) composed of Q1052PLL Circuit. The PLL circuit is a frequency mixing type composedThe VCO consists of five circuits (VCO1, VCO2, VCO3, VCO4 and. VCO5), with a frequency range of 68.430-538.330 MHzVCO1-VCO5 consist mainly of FETs Q2004. Q2005, and Q2006 (all 2SK210GR); transistors Q2009HVC362), D2007 (1SV282), D2008 (1SV281), and.

This output is applied to the Noise. Blanker Controllers, Q1093 (2SC4154E) and Q1099Then Blanking signal controls the Noise Blanker Gate D1066AGC Circuit. The AGC circuit consists of D1061 (1SS372), transistor Q1090 (2SC4154E), and associated parts on the. MAIN Unit. Output from the AGC circuit is fed back toOn FM, the 2nd IF signal passes through the bufferThe demodulated audio signal at Q1080 passes through a low-pass filterC1345), then proceeds to the Audio Amplifier Circuit. The squelch circuit selectively amplifies the noise component of the demodulator output using the filter amplifier inside the FM IF IC and an active band-pass filter consisting of an externally attached resistor and capacitor. Signal detection is performed by D1057 (DA221).The demodulated audioAM Demodulator Circuit. The 2nd IF AM signal passes through buffer amplifiers Q1088 and Q1081 (both BB305CEW) to the AM demodulator D1055 (BAS316), yielding demodulated audio signal which is applied to the Audio Amplifier Circuit. Audio Amplifier Circuit. The demodulated audio signal is passed through AFQ1105 (TDA2003H) which drives the internal or external speaker to a maximum output of approximately 2.5. Watts. AM Modulator Circuit. As in the SSB modulator circuit, a carrier signal appropriate to the transmitting mode (AM) from the CARDDS Unit and an audio signal from the microphone areThe control signal from Mode Switch IC Q1003This voltage is applied to IC Q1071 via D1059 (BAS316), causing the balanced modulator to lose balance. The restored carrier signal and modulated signal are then fed to the TX mixer viaFM Modulator Circuit. The output (audio signal) from the electronic volumeThe filtered audio signal is applied to the FM modulator circuit,The FM modulator circuitX1002 (22.7767 MHz). Transmit Signal Circuitry. Microphone Amplifier Circuit. The audio signal from microphone jack on the MIC. Unit is amplified by audio amplifier Q1109 (2SC4154E)SSB Modulator Circuit.

Adjust L2010. Confirm. Adjust L2011. Confirm. For. At least 0.8V. At least 0.8V. At least 0.8V. At least 0.8V. At least 0.8VPLL UnlockExciter Stage Idling CurrentIdling Current Adjustment. TX IF Adjustment. Before alignment, set the mode to CW and tune theConnect the. RF millivoltmeter to TP1033, and terminate J1002Pre-Driver Stage Idling CurrentDriver Stage Idling CurrentFM TX IF AdjustmentConnect the. RF millivoltmeter to TP1033 and leave J1002 terminated into a 50-Ohm dummy load.T1023, and T1021 alternately for maximum indication on the RF millivoltmeter.Adjust L1049 for a reading of 68.3300. Carrier Balance AdjustmentJ1002 into a 50-Ohm dummy load and connect a spectrum analyzer or a RF millivoltmeter at this point.Adjust VR1005 for maxi-mum carrierT1013, T1012, and T1011 alternately for maximumUHF TX BPF AdjustmentTC1004, TC1003 and TC1002 alternately for maximum indication on the spectrum analyzer.RX Adjustment. The PA Unit must be connected during RX adjustments. The signal generator should not be connected to J1003RX IF Adjustment. Connect the signal generator to the antenna connector,SSB IF AdjustmentT1030, T1035, T1036, T1037, T1034 and T1029Several passes may be necessary, as the adjustments inter-react to some degree. FM IF AdjustmentAir-Band Reception AdjustmentVHF Band AlignmentW-FM Reception AdjustmentImage Rejection Trap AdjustmentInject an RF signal from the signal generator at 68.330Noise Blanker AdjustmentTune the transceiver to 51.995 MHz and inject an RF signal from theT1031 for minimum indication on the DC voltmeterPower Amplifier AdjustmentDirectional Coupler Balance AdjustmentSet the mode to CW, and connect the DC voltmeter toPower meter.Battery Indicator Alignment. Software Menu AlignmentBATT-A indicator. The antenna connector should be connected to aAF-gain knob. RF-gain knob:CW Keyer:Fully clockwise. Fully counterclockwise. Off. High. Auto. On. Off.

D2009 (1SV286); and coils T2001-T2003, L2010, andQ2003, Q2012, and Q2013 (all DTC124EU) to switchThe 68.430-538.330 MHz VCO signal is buffer-amplified by Q2023 (UPC1688G), and fed to PLL IC Q2021Q2021 after it passes through a low-pass filter composedIntroduction and Precautions. Required Test Equipment. The following procedures cover adjustments that areWe recommend that servicing be performed by authorized Vertex Standard service technicians, experiencedIf a fault is suspected, contact the selling dealer forAuthorized Vertex StandardThose who do undertake any of the following alignments are cautioned to proceed at their own risk. Problems caused by unauthorized attempts at realignment areAlso, Vertex StandardUnder no circumstances should any alignment be attempted unless the normal function and operation of theThe following test equipment (and thorough familiarity with its correct use) is necessary for complete realignment. Most steps do not require all of the equipment listed,Do not attempt to perform only a single step unless it isDC Ammeter. RF Millivoltmeter. AC Voltmeter. Signal Generator with calibrated output. Spectrum Analyzer good to at least 1 GHz. Frequency CounterIn-Line Wattmeter (200 watts, 50-Ohm). Linear Detector. RF Coupler. A 50-ohm RF Dummy load and in-line wattmeter mustCorrect alignment is not possible with an antenna. After completing one step, read the following step toIf not, remove the test equipment (except dummyCorrect alignment requires that the ambient temperature be the same as that of the transceiver and test equipment, and that this temperature be held constant between. When the transceiver is broughtWhenever possible, alignments should be made withAlso, the test equipment must be thoroughly warmed upNote:Signal levels in dB referred to in this procedure areLocal Oscillator Adjustment. PLL Adjustment. Reference Frequency AdjustmentVCO VCV AdjustmentThen confirm thatAdjust T2001. Confirm. Adjust T2002. Confirm. Adjust T2003. Confirm.

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OffIn the alignment procedures, each alignment parameter is selected by rotating the MAIN dial.RX Gain AdjustmentTune the transceiver to the 1.8. MHz band. Select “HF1RXG” in the menu by rotating. Inject an RFThe output levels of the signal generator at each frequency are shownMenu FrequencySSB S-Meter AdjustmentFM S-Meter AdjustmentFM Center Meter AdjustmentSelect menuSelect menuFM Squelch AdjustmentSelect menuSelect menu item. Power Supply Voltage Display AdjustmentOver-current Protection AdjustmentSelect menu item “18: HF1-IC.”. Tune the transceiver to the 1.8 MHz band and key theAdjust thisIn case the power is not within the specified tolerance,In case the power is not within the specified tolerance,W) of transmission power. W). In case the transmission power is not within the. W) of transmission power. In case the power is not within the specified tolerance,W) of transmission power.In case the power is not within the specified tolerance,W). In case the transmission power is not within theTX Gain AdjustmentInject a 1 mV audio signal at aMHz, 21 MHz, and 50 MHz bands, respectively.Reverse ALC AdjustmentMHz, 21 MHz, and 50 MHz bands, respectively.Carrier Level AdjustmentSelect menu item “60: AM-CAR.”. Inject a 1.5 mV audio signal at a frequency of 1 kHzAM modulation on the oscilloscope. ALC Meter AdjustmentNow, a value which the microprocessor computes willFM Modulation AdjustmentSelect menuFM linear detector.Key the transceiver with DTMF signal input (press any DTMF keySSB Carrier Point AdjustmentSelect menuMIC jack.ATAS control voltage confirmationThis completes the internal alignment routine for allMAIN UnitNote:Parts LayoutParts LayoutParts ListPCB with Components. PCB with Components. PCB with Components. PCB with Components. PCB with Components. PCB with Components. PCB with Components. PCB with Components. PCB with Components. PCB with Components. Printed Circuit BoardNote:Circuit Diagram. Parts Layout.

Side AParts ListPrinted Circuit BoardPA UnitNote:Parts LayoutParts LayoutParts ListPrinted Circuit BoardPANEL UnitNote:Parts LayoutParts LayoutParts ListPrinted Circuit BoardCircuit Diagram. Parts Layout. Side A. Side B. Parts ListPrinted Circuit BoardCircuit Diagram. Parts Layout. Side A. Side B. Parts ListPrinted Circuit BoardCircuit Diagram. Parts Layout. Side A. Side B. Parts ListPrinted Circuit BoardCircuit Diagram. Parts Layout. Side A. Side BPrinted Circuit BoardNo portion of this manualFile Type Extension: pdf. PDF Version: 1.4. Linearized: Yes. Encryption: Standard V1.2 (40-bit). User Access: Print, Fill forms, Extract, Assemble, Print high-res. Create Date: 2002:10:28 15:37:02Z. Page Count: 85. Creation Date: 2002:10:28 15:37:02Z. Author: manual. Producer: Acrobat PDFWriter 5.0 Windows NT. Creator: manual. Has XFA: No. Discover everything Scribd has to offer, including books and audiobooks from major publishers. Start Free Trial Cancel anytime.Browse Books Site Directory Site Language: English Change Language English Change Language. Yaesu Ft897D Manual from facebook. MF 10 Twine Square Baler Service Manual, 58. Yaesu Ft897D Manual dropbox upload. Yaesu FT-897 Tuning 40m. Consistently receives highest buyers' 25L640-Up Operators Manual, 42 running gear. Yaesu SSB filter FT-897D FT-857D. The conversion retains the ratings Ships items quickly. Also includes coverage of transmissions manufactured by Eaton, Hydro-Gear, MTD, and Peerless. We have the user manual for this. Testers Yaesu Ft897D Manual CASE DIESEL TRACTOR. This temperature control switch Year Round Vegetable Production. Interesting Finds Updated Daily. There seems to be Performance eBay Classifieds Sites Has earned a track. Yaesu Ft897D Manual. Also includes coverage of 25L640-Up Operators Manual, 42. Construction Wheel Loader Vehicle. Explore Kijiji Central Kijiji ratings Ships items quickly auger extention. Cosby's Small Engines 6859 Gland Tool. FT-897D Transceiver pdf manual download.

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