Kenwood TS-820 manual @ B a N D Switch, @ Function Switch, @! H. S W Heater Switch, @ Power Switch

Page 12

[he RIT circuit is ON. By turning the RIT knob, the receive frequency of VFO can be changed by -1-3 kHz and the fre- quency of fixed channel by -1- 150 Hz without changing the transmit frequency.

@B A N D SWITCH

This 1 1-position switch selects all the necessary circuits to tune the transceiver to the desired 5 0 0 kHz band.

@FUNCTION SWITCH

This 7-position rotary switch selects one of the following Iransceive functions.

CAL- This position allows callbration of the TS-820's

FIX. internal VFO to one of the transceiver'sfixed fre- quency channels (if an optional fixed channel cry- stal is installed). With the switch in this position a signal is generated at the selected fixed channel frequency and the main tuning knob can be tuned to zero beat the calibrating signal.

CAL- This position allows calibration of the VFO-820

RMT: (remote VFO) t o the transceiver'soperating fre- quency. With the switch in this position. the transceiver generates a calibrat~ngsignal and the VFO-820 can be tuned to zero-beat the calibra- ting signal.

CAL- With the switch in this position. the transceiver's 2 5 kHz: calibrator circuit generates a marker signal at

every 2 5 kHz for normal calibration of the internal VFO.

VFO: The switch is kept in this position for normal transceive operation.

VFOR: With the switch in this position, the TS-820'sin- ternal VFO controls the receive function and the internal fixed channel oscillator controls the trans- mit function (if fixed channel crystals are installed in the oscillator)

FIXR: With the switch in this position. the TS-820'sin- ternal VFO controls the transmit function and the built~infixed channel oscillator controls the re- ceive function (if fixed channel crystals are instal- led in the oscillator). The VFOR and FIXR allow cross-channel operation without an external VFO.

FIX Wlth the swltch in this pos~tion.the TS-820's f ~ x e dchannel oscillator controls the transmit and recelve function of the transceiver (if accessory

f~xedchannel crystals are installed in the transcei- ver).

@! H. S W (HEATER) SWITCH

This switch turns the heater circuits of the three transmitting tubes on and off. The heaters would normally be turned to OFF to reduce power consumption in mobile or portable re- ceiving.

@POWER SWITCH

The POWER switch turns all the power on and off in the TS-820.

@RIT KNOB

T h ~ sknob 1s used to change recelve frequency when the RIT clrcujt is in operatlon Set the center posltlon (0) of the RIT knob to the RIT OFF

@IF SHIFT KNOB

By using this knob during reception. the center frequency of the IF crystal filter can be shifted by i 1 . 7 kHz. facilitating the adjustment of the tonal quality of receive signal or elimi- natlng radio interference from nearby frequencies. For nor- mal operation. this knob should be set to the center position (click is heard).

M I C G A l N K N O B

This knob is used for adlustment of the galn of MIC ampltfler dur~ngSSB operatton Adlust so that the meter polnter does not deflect beyond the ALC zone

@CAR (CARRIER) LEVEL KNOB

Used t o adjust carrier level during CW operation. Adjust so that the meter does not deflect beyond the ALC zone.

@AF G A l N KNOB

This knob adjusts the gain of the receiving audio amplifier. The audio volume of the received signal increases as the control is turned clockwise.

@RF G A l N KNOB

This control adjusts the gain of the receiver section'sRF am- plifier. Turn the knob fully clockwise for maximum gain and for a correct S-meter reading. Turn the control counter-. clockwise to reduce the gain.

@FIX CH (FIXED CHANNEL) SELECT SWITCH

Th~sfour-position rotary switch selects between four diffe- rent fixed frequency channels which can be installed inside

Page 11 Page 13
Image 12
Page 11 Page 13
Contents Operating Manual Contents WWV ModeAudio Input Impedance Audio Output ImpedanceFeatures SectionInstallation Power ConnectionsUnpacking Operation LocationHeadphones KEYExternal Speaker a N D Rtty FS KANT AC OperationSuitable PTT Microphone Operating Controls Front View Panel@ Meter Switch @ VFO Indicator@ Stand by Switch @ ATT IndicatorVOX Switch @ N B SwitchC Switch C Connector@ B a N D Switch @ Function Switch@! H. S W Heater Switch @ Power SwitchDisplay Hold Switch Rear Panel View@ Drive Knob @ Plate KnobRear PAN EL Controls External VFO Connector @ Remote Connector@ DC-DC Converter Connecting Hole PIN FunctionPreliminary Procedure Operating InstructionsReceiver T U N I N G Reading the Operating FrequencyCalibrating T H E Frequencies RF G a l NCalibrating the Fixed Channel a N D VFO Freciuencies Calibrating the T S 8 2 0 W I T H VFO-820If Shift 9NOISE BlankerAGC a U T O M a T I C Gain Control 1 Transmitter T U N I N GALC Front Panel ControlsUP on 2 SSB O P E R a T I O N 3 C W O P E R a T I O N4 Operation W l T H a Linear Amplifier 5 Fixed Frequency Operation6 Internal Cross Channel Operation Mobile Operation9 Rtty Operation Function TransmitUSE of Monitor Switch Sstv Slow Scan TV OperationOperation with a Phone Patch Novice OperationTS-820 Block Diagram Block D I a G R a M GeneralTransmitter Section Receiver SectionBoard a N D Unit Coil Pack Board PLL Unit Counter Assy Unit Display Unit Option Display UnitAF AVR Board I N a L Stage Power Amplifier Maintenance and Alignment General InformationAccessories Installing the D C D C Converter IDSI b l Transverter TV-5021 Fixed Channel Crystal Installation Remote Connections Extension FeetAdjustment of Receiver Section Adjustment of Transmitter Section Adjustment of T R a N S M I T if Coil if a N D RF UnitsCarrier Balance Adjustment if UNIT1 Neutralizing the Final StageTrolibleshooting General InformationTransmitter a N D Receiver Circuits Receiver SectionSymptoms Transmitter SectionTOP & Bottom View of the TS-820 FANPage IO--KENWOOD Corporation

TS-820 specifications

The Kenwood TS-820 is a high-performance amateur radio transceiver known for its exceptional features and technologies that cater to both novice and experienced operators. This rig, part of Kenwood's renowned TS series, has become a popular choice for those seeking reliability and versatility in their communication equipment.

One of the defining characteristics of the TS-820 is its dual-conversion superheterodyne receiver architecture. This design minimizes interference and provides improved performance across various amateur radio bands. With coverage from 160 meters to 10 meters, the TS-820 is capable of operating on all major HF amateur bands, making it an excellent choice for diverse communication purposes.

In terms of power, the TS-820 delivers a solid output of 100 watts, ensuring that operators can make their presence known across the airwaves. The rig features a built-in automatic antenna tuner, which simplifies the setup process by matching the transmitter to various antenna types. This feature not only enhances signal clarity but also maximizes the station's efficiency.

Another standout feature of the TS-820 is its extensive digital signal processing (DSP) capabilities. The advanced filtering options help to eliminate noise and interference, allowing users to hear weaker signals more clearly and effectively. The IF filter selections can be adjusted to optimize reception under varying conditions, showcasing the rig's adaptability.

The user interface of the TS-820 is designed for both ease of use and functionality. The large, backlit display provides critical information at a glance, while the rotary controls offer tactile feedback, allowing operators to make precise adjustments quickly. Additionally, the rig supports various modes of operation, including SSB, CW, and RTTY, accommodating a wide range of communication preferences.

Built with durability in mind, the TS-820 utilizes high-quality components and construction techniques that ensure long-term reliability. Its rugged design can withstand the rigors of everyday use, making it a trustworthy companion for any amateur radio enthusiast.

In summary, the Kenwood TS-820 is a versatile and reliable amateur radio transceiver that stands out due to its superior performance, advanced technologies, and user-friendly features. With its robust design and comprehensive capabilities, the TS-820 continues to earn its place as a respected choice among ham radio operators around the world. Whether engaged in casual conversation or competitive contesting, enthusiasts can rely on the TS-820 for a satisfying and immersive amateur radio experience.
Top Page Image Contents