ft 7800r service manual

GRM36CH070B50PT K22178294 C 1361 CHIP CAP. 0.001uF GRM36B102K50PT K22178809. LOT SIDE LAY ADR C 1414 CHIP CAP. 56pF GRM36CH560J50PT K22178230 VER. C2 C 1414 CHIP CAP. 56pF GRM36CH560J50PT K22178230 VER. C3 C 1414 CHIP CAP. 56pF GRM36CH560J50PT K22178230 VER. LOT SIDE LAY ADR L 1032 M.RFC 0.0047uH TFL0816-4N7 L1690487 L 1033 M.RFC 0.0047uH TFL0816-4N7 L1690487 L 1034 M.RFC 0.0047uH TFL0816-4N7 L1690487 L 1035 M.RFC 0.0047uH TFL0816-4N7 L1690487 L 1036 M.RFC 0.022uH. LOT SIDE LAY ADR PCB with Components CB2349001 CB2349003 CB2349004 Printed Circit Board AH016M000 FR0111800 C 2001 CHIP CAP. 47pF GRM36CH470J50PT K22178228 C 2002 CHIP CAP. 47pF GRM36CH470J50PT K22178228 C 2003 CHIP CAP. LOT SIDE LAY ADR PCB with Components CB2350001 Printed Circuit Board AH016M000 FR0111900 J 3001 CONNECTOR NTC-623PCBL6-B P1091107 S 3001 ROTARY ENCODER EC11B15202AA Q9000804. No portion of this manual may be reproduced without the permission of VERTEX STANDARD CO., LTD. Unit 12, Sun Valley Business Park, Winnall Close Winchester, Hampshire, SO23 0LB, U.K. The high power output of the FT-7800R is produced by its RD70HVF1 Power MOS FET amplifier, with a direct-flow heat sink and thermostatically-controlled cooling fan maintain- ing a safe temperature for the transceiver’s circuitry. Some accessories are supplied as standard per local requirements, while others may be unavailable in some regions. Consult your Yaesu dealer for details regarding these and any newly-available options Connection of any non-Yaesu- approved accessory, should it cause damage, may void the Limited Warranty on this appa- ratus. Avoid heating vents and window locations that could expose the transceiver to excessive direct sunlight, especially in hot climates. These safety tips apply to any device installed in a well-designed amateur radio station.

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Operating Manual PDF Service Manual for Yaesu FT-7800R (FT 7800 R FT7800R): Mods for Yaesu FT-7800R (FT 7800 R FT7800R): Yaesu FT-7800R (FT 7800 R FT7800R) TX mod in german language with picture Yaesu FT-7800R (FT 7800 R FT7800R) MARS CAP modification Yaesu FT-7800R (FT 7800 R FT7800R) TX mod Yaesu FT-7800R (FT 7800 R FT7800R) technical specifications. Attempts by non-qualified Each side of thr board is. In most cases one Your cooperation in pointing out any 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 the warranty, and may be illegal in some countries. Therefore, prior to adjustment you must adjust the DIAL knob to set the Alignment of the FT-7800R is performed using a front- frequency to the middle of the band, in step 2, so you panel software-based procedure. To perform alignment can set peak in the DC voltmeter's deflection in the of the transceiver, it must first be placed in the “Align-. LOT SIDE LAY ADR PCB with Components CS1803001 USA A2U CS1803004 EXP A1 CS1803005 EXP A2 CS1803006 EXP A3 CS1803007 EXP B1 CS1803008 EXP B2 CS1803009 EXP B3 CS1803010 EXP C1 CS1803011. LOT SIDE LAY ADR C 1123 CHIP CAP. 0.001uF GRM36B102K50PT K22178809 C 1124 CHIP CAP. 0.01uF GRM36B103K16PT K22128804 C 1125 CHIP CAP. 0.01uF GRM36B103K16PT K22128804 C 1126 CHIP CAP. 0.001uF GRM36B102K50PT K22178809. LOT SIDE LAY ADR C 1200 CHIP CAP. 0.0047uF GRM36B472K25PT K22148830 C 1201 CHIP CAP. 0.001uF GRM36B102K50PT K22178809 C 1202 CHIP CAP. 0.1uF GRM36B104K10PT K22108802 C 1203 CHIP CAP.LOT SIDE LAY ADR C 1280 CHIP CAP. 0.001uF GRM36B102K50PT K22178809 C 1281 CHIP CAP. GRM39F105Z10PT K22105001 C 1283 CHIP CAP. 47pF GRM36CH470J50PT K22178228 C 1284 CHIP CAP. 0.001uF GRM36B102K50PT K22178809. LOT SIDE LAY ADR C 1356 CHIP CAP. 0.001uF GRM36B102K50PT K22178809 C 1358 CHIP CAP. 0.001uF GRM36B102K50PT K22178809 C 1359 CHIP CAP.

This helps prevent false activation of the repeater by radar or spurious signals from other transmitters. This tone system, called “CTCSS” (Continuous Tone Coded Squelch System), is included in your FT-7800R, and is very easy to activate. Tone Scanning works either in the VFO or Memory modes.These include: “Regular” Memory Channels, which includes: 1000 “Standard” memory channels, numbered “000” through “999.” 5 Home channels, providing storage and quick recall of one prime frequency on each operating band. Whenever you recall a memory which contains in- dependently-stored transmit and receive frequen- cies, the “ ” indication will appear in the display.To return to normal operation, repeat the above steps.It will halt on signals encountered, so you can talk to the station(s) on that frequency, if you like. If you want to change direction of the scan while it is underway, rotate the DIAL knob one click in the opposite direction (in this case, one click counter- clockwise). These channels are designated by a “ ” icon when you have selected them, one by one, for the Preferential Scan List. When the Weather Alert Scan feature is engaged, the FT-7800R will check the Weather Broadcast Memory Channels for activity every five seconds while operating on a VFO scan or Memory channel scan. You therefore can set upper and lower operation limits on a number of bands, if you like.The Smart Search memories are so-called “soft” memories; they will lost if you exit the Smart Search mode or initiate a new Smart Search sweep.These DTMF Autodialer memories can store up to 16 digits of a telephone number for repeater autopatch or other uses. To load DTMF Autodialer memories, use following procedure: 1. To restore the normal (higher) microphone input level, select “WIDE” in step 3 above.Activate the Scanner.Remember to restore the default setting to “T RX N” (Encoder; Normal, Decoder; Normal) when done.

The antenna (or a 50 Ohm dummy load) should be connected whenever the transceiver is turned on, to avoid damage that could otherwise result if trans- mission occurs accidentally without an antenna. Mount the transceiver where the display, controls, and microphone are easily accessible, using the supplied MMB-36 mounting bracket. The transceiver may be installed in almost any location, but should not be positioned near a heating vent nor anywhere where it might interfere with driving (either visually or mechani- cally). The pin connections of the Data connector are shown below. ICROPHONE 350 MHz 430 MHz DTMF MICROPHONE MH-48 144 MHz. 850 MHz FT-7800R O. In many ways, these buttons emulate the function of the (rotary) DIAL knob.See page 60 for details. ICROPHONE, but the MH-42 250 MHz 350 MHz 144 MHz. 850 MHz FT-7800R O does not include B6JS CONDENSER MIC MH-42. See page 71 for details.I know you’re anxious to get on the air, but I encourage you to read the “Operation” section of this manual as thoroughly as possible, so you’ll get the most out of this fantastic new transceiver. Clockwise rotation of the DIAL knob causes the FT-7800R to be tuned toward a higher frequency, while counter-clockwise rotation will lower the operating frequency. These power. The possible lockout combinations are: LK KEY: Just the front panel keys and microphone buttons are locked out (except for the PTT switch). The FT-7800R is set up at the factory in the “AUTO” configuration, which probably is satisfactory for most operation. However, if you need to change the channel step increments, the procedure to do so is very easy;. Your FT-7800R has been configured, at the factory, for the repeater shifts customary in your country. While the 144 MHz shift will be 600 kHz; on 70 cm, the shift may be 1.6 MHz, 7.6 MHz, or 5 MHz (USA version). Enter the transmit and receive fre- quencies separately, as shown on page 33.

Nem talalok anyagot hozza.Most 450-490Mhz kozott mukodik, de nekem 430-450Mhz-ig kellene. Ha tud valaki segiteni megkoszonom. Udv:pandora Similar manuals: You can write in English language into the forum (not only in Hungarian). The resource is currently listed in dxzone.com in a single category. The main category is VHF UHF mobile transceiver that is about VHF UHF mobile transceiver.Webmaster, add a Remote rating Yaesu FT-7800 7900 Mod - CAP MARS transmitting modification for the Yaesu FT-7800 and FT-7900. Yaesu FT-7800 Service Manual - Service manual in PDF Format for the Yaesu FT-7800 transceiver.Share this link with your friends, publish within popular social networks or send it via email.Service provided by Google FeedBurner. Page Count: 48 US HeadquartersWinchester, Hampshire, SO23 0LB, U.K. Technical SupplementThis manual provides technical information necessary for servicing the FT-7800R Transceiver. 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 thr board isIn most cases oneWhile we believe the technical information in this manual to be correct, Vertex Standard assumes no liability for damage that may occur as a result of typographical or other errors that may be present. Your cooperation in pointing out anyContents. Specifications. A-1. Block Diagram. C-1. Circuit Description. D-1. Alignment. E-1. MAIN Unit. F-1. PANEL Unit. G-1. CH Unit. H-1General. Frequency Range. RX: 108.000 - 520.000 MHz,TX: 144.000 - 148.000 MHz or 144.000 - 146.000 MHz,Channel Steps. Modes of Emission:Frequency Stability. Supply Voltage. Current Consumption (Approx.): RX: 0.5 A (Squelched)Weight (Approx.):Transmitter. Output Power. Modulation Type. Maximum Deviation. Spurious Radiation. Microphone Impedance. DATA Jack Impedance. Variable ReactanceReceiver. Circuit Type. Intermediate Frequencies. Sensitivity.

This requires a user-constructed Cloning cable which connects the DATA jacks on the two transceivers, as shown below. To clone from one transceiver to another, use the following procedure: 1. It may be used for configuration of a wide variety of transceiver parameters, some of which have not been detailed previously. Use the following procedure to activate the Set (Menu) mode: 1. Selects the Receiving mode. Selects or disables the VFO band edge limiting for the current band. Reducing the MIC Gain (and Deviation).: Depends on the band of operation.FT-7800R O access. operation. See page 60 for details.Available Values: 0.00 - 99.95 MHz (50 kHz step) Default: Depends on the band of operation.Note: 5 kHz and 15 kHz steps are not available for use on above 700 MHz. ” M ” icons will appear during operation) FT-7800R O ” icon will appear during opera-. Operation is subject to the following two conditions; (1) This device may not cause harmful interference, and (2) this device must accept any interference including received, interference that may cause undesired operation. No portion of this manual may be reproduced without the permission of VERTEX STANDARD CO., LTD. 0310A-0T. 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 FYG-3u hasznalata sziasztok.Csaba. Tudna valaki segiteni Yaesu FTL-7002 tip. URH ado-vevo mukodesi tartomanyanak a boviteseban.

Those who do undertake any of the following alignmentsAlso, Vertex StandardUnder no circumstances should any alignment be attempted unless the normal function and operation of the transceiver are clearly understood, the cause of the malfunction has been clearly pinpointed and any faulty components replaced, and the need for realignment determinedSet up the test equipment as shown below, and apply 13.8. VDC power to the transceiver.Dummy Load. Power SupplyGenerator. RF Sampling. Coupler. Inline. WattmeterDummy LoadCounter. Deviation. Meter. Pin 5. AF Signal. GeneratorPLL Reference Frequency. A dummy load and inline wattmeter must be connectedAfter completing one step, read the following step to determine whether the same test equipment will be required. If not, remove the test equipment (except dummy load and wattmeter, if connected) before proceeding.Correct alignment requires that the ambient temperatureIf possible,Also, the test equipment must be thoroughly warmed up before beginning. Notes: Signal levels in dB referred to in alignment are. Entering the Alignment mode. Alignment of the FT-7800R is performed using a frontpanel software-based procedure. To perform alignmentTo enter the Alignment mode:REF.xxH” to appear on the display, this signifies thatRF Front-end TuningThe FT-7800R’s RF. Front-end has a broad bandwidth. Therefore, prior toSignal Generator.As in the previous section, be sure to set the DIAL knob for the center of theTX Power Output. TX DeviationDCS TX DeviationDCS with a “023” DCS code, and set the Transmit. Power Level to “LOW.”DCS with a “023” DCS code, and set the Transmit. Power Level to “LOW.”Signal Generator.Signal Generator.Signal Generator. S-Meter Sensitivity. DC VoltmeterSignal Generator.CTCSS Encoder with a “100 Hz” tone, and set the. Transmit Power Level to “LOW.”. CTC.xxH.”CTCSS Encoder with a “100 Hz” tone, and set the. Transmit Power Level to “LOW.”Center Meter SensitivityPWR switch for 0.5 seconds (to turn the power off).

ThePin 14: 8.40 V. Pin 15: 3.57 V. Pin 16: 3.27 V. Circuit DiagramPin 4: 4.81 V. Pin 8: 0.65 V. Pin 10: 4.81 VNoteParts Layout (Side A)Parts Layout (Side B)Parts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListParts ListCircuit DiagramParts Layout (Side A)Parts ListPrinted Circit BoardParts ListParts ListParts List. NoteCircuit Diagram. Parts Layout. Side A. SideB. Parts ListPrinted Circuit BoardNoteNo 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: 2003:10:03 01:51:19Z. Subject: Dual Band VHF UHF RTX. Keywords: Yaesu, -, FT-7800R, Technical, supplement. Producer: Acrobat Distiller 5.0 (Windows). Creation Date: 2003:10:03 01:51:19Z. Author: Vertex Standard CO., Ltd. Creator Tool: PageMaker 6.5J. Document ID: uuid:68135281-010b-47dc-b4cf-38695c91a3cc. Instance ID: uuid:97a4a44e-2f4d-4541-86d6-18193d26ecea. Creator: Vertex Standard CO., Ltd. Title: Yaesu - FT-7800R Technical supplement. Description: Dual Band VHF UHF RTX. Has XFA: No. Page Count: 48. Something went wrong.Learn more - opens in a new window or tab This amount is subject to change until you make payment. For additional information, see the Global Shipping Program terms and conditions - opens in a new window or tab This amount is subject to change until you make payment. If you reside in an EU member state besides UK, import VAT on this purchase is not recoverable. For additional information, see the Global Shipping Program terms and conditions - opens in a new window or tab Delivery times may vary, especially during peak periods.

Squelch Sensitivity. Maximum AF Output. AF Output Impedance. Double-conversion superheterodyneNoteVHF Reception. The incoming VHF signal is passed through a low-passD1075 (RLS135) and D1015 (HVC131), and another lowpass filter network to the RF amplifier Q1008 (3SK296ZQ). The amplified RF signal is passed through a varactor controlled bandpass filter consisting of L1017, L1018, and. D1010, D1011, and D1012 (all HVC365), then applied toThe first local signal is generated between 189.05 MHzD1051 (HVC365), and D1052 (HVC362). UHF Reception. The incoming UHF signal is passed through a low-passD1084 (HSC277), and another low-pass filter network toThe amplified RFQ1002 (3SK296ZQ) along with the first local signal fromThe first local signal is generated between 384.95 MHzThe 45.05 MHz first IF signal is applied to the monolithicThe amplified first IF signal is thenThe 44.6 MHz second local signal is derived from 11.15. MHz crystal X1002, the frequency of which is multipliedThe filtered audio signal is passed through the audio volumeSquelch Control. When no carrier received, noise at the output of the detector stage in Q1023 (TA31136FN) is amplified and bandpass filtered by the noise amp section of Q1023While no carrier is received, pin 53 of Q1065Transmit Signal Path. The speech signal from the microphone passes throughThe adjusted speech signal from Q1040 (NJM2902V) isQ1087 (RD70HVF1) up to 50 Watts. This three-stage power amplifier’s gain is controlled by the APC circuit. TheThe 450 kHz second IF signal is applied to the ceramicQ1023 (TA31136FN) to the ceramic discriminator CD1001IF signal before detection of speech.UHF Transmit Signal Path. PTT Circuit. The adjusted speech signal from Q1040 (NJM2902V) isAPC circuit. The 40 Watt RF signal passes through highpass filter and low-pass filter networks, antenna switch.

D1077 (UM9401F), and another low-pass filter network,When the PTT switch is pressed, pin 8 of sub CPU Q2001When the CPU receives the “PTT” command, it engages Q1057 (UMA8N)TX APC Circuit. A portion of the power amplifier output is rectified by. D1070 and D1071 (UHF: D1078 and D1079, all. MA2S728), then delivered to APC Q1081 (NJM2904V),The APC Q1081 (NJM2904V) compares the rectified DC voltage from the power amplifierPower amplifier Q1087 (RD70HVF1), so as to maintainA portion of the output from the VCO Q1076 (2SC5374)The 11.15 MHz frequency of the reference oscillator circuit derived from X1002 is divided by the reference frequency divider section of Q1070 (MB15A02PFV1) intoThis pulse is integrated by the charge pump and loop filter of Q1070Introduction and Precautions. Required Test Equipment. The FT-7800R has been carefully aligned at the factoryMHz amateur bands. Realignment should therefore notAll component replacement and service should be performed only by an authorized Vertex Standard representative, or the warranty policy may be voided. The following test equipment (and thorough familiarityCorrection of problems caused by misalignment resulting from use of improper test equipment is not coveredWhile most steps do not require all of the equipment listed, the interactions of someDo not attempt to perform onlyThe following procedures cover the sometimes critical andHowever, if damageWe recommend that servicing be performed only by authorized Vertex Standard service technicians who are experienced with the circuitry and fully equipped for repair and alignment. Therefore, if a fault is suspected, contact the dealer from whom the transceiver was purchasedAuthorized Vertex Standard service technicians realign all circuits and make complete performance checks to ensure compliance with factory specifications after replacing any faulty components.

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