Kenwood TS-820 @ Meter Switch, Alc, @ VFO Indicator, Comp, @ Stand by Switch, @ ATT Indicator

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3.1F R O N T P A N E L C O N T R O L S

@METER

The meter monitors six different functions. depending on the position of the METER switch. In receive the meter is automatically an S-meter. The S-meter shows received si- gnal strength on a scale of 0 to 4 0 db over S9. In transmit the meter function depends on the position of the METER switch. as described below.

@METER SWITCH

The position of the METER switch determines the function of the meter. The switch selects one of the following func- tions (see Section 4 for nominal meter readings):

ALC

(Automatic Level Control) - In this position the

 

meter monitors the ALC voltage of the internal

 

ALC circuit (or the ALC voltage feedback from a

 

linear amplifier operated in conjunction with the

 

TS-820). For SSB operation the ALC reading for

 

voice peaks should be within the indicated ALC

 

range of the meter. The ALC voltage adjustment

 

is made with the MIC control for SSB and with

 

the CAR control for CW.

IP

(Plate Current) - In this position the meter moni-

 

tors the plate current of the final tubes. The me-

 

ter scale is calibrated from 0 to 3 5 0 ma.

@VFO INDICATOR

The VFO indicator is a light emitting diode which illuminates whenever the TS-820'sinternal VFO is controlling the trans- ceiver'soperation. The indicator is not lighted during fixed channel. or remote VFO. operation.

This light emitting diode is illuminated when the RIT circuit is turned on, showing that the transmit and receive frequen- cies may be different.

@S U B - D I A L

The sub-dial is turned with the main tuning knob t o select the operating frequency of the transceiver. It is calibrated at 50 kHz intervals from 0 - 5 0 0 kHz.

@D l A L SCALE

The unique mono-scale permits direct reading of frequencies over the range of 0 to 5 0 0 kHz graduated at 1 kHz inter- vals Operating frequency can be obtained by adding the frequency read on the dial to the frequency (MHz) indicated on the BAND switch.

@D l A L CALIBRATE KNOB

This knob is used t o calibrate the reading on the dial scale. It should not be used for tuning purposes.

RF:

T

COMP:

HV:

(Output Power) - In this position the meter mo- nitors the relative output power of the transcei- ver. There is no meter scale for this position. Normally the reading should be adjusted with the RF VOLT control for a 2/3 scale meter reading,

This indicates the state of compression when the speech processor is operated.

(High Voltage) - In this position the meter moni- tors the high voltage from the power supply. The meter scale is calibrated from 0 to 10. indicating 0 to 1 0 0 0 volts.

@M A I N T U N l G KNOB

Thls knob turns the VFO and dial scale to select the fre- quency to be added t o the band frequency to establish the transceiver'soperating frequency.

@STAND - BY SWITCH

This two position lever switch selects one of the following functions:

REC: The transceiver is receiving unless the micro- phone PTT switch is switched to transmit, or the VOX circuit is activated.

@ATT INDICATOR

Thls indicator uses a light emitting diode. It is illuminated when the RF ATT switch is turned to ON.

@FIX (FIXED CHANNEL OPERATION) INDICATOR

The FIX ind~catoris a lightemitting diode which illuminates whenever the TS-820'sinternal fixed frequency oscillator is controlling the transceiver'soperation.

SEND: The TS - 820 is'lockedinto the transmit mode in this swttch position.

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Contents Operating Manual Contents Audio Input Impedance WWVMode Audio Output ImpedanceFeatures SectionUnpacking InstallationPower Connections Operation LocationExternal Speaker a N D HeadphonesKEY Rtty FS KANT AC OperationSuitable PTT Microphone Operating Controls Front View Panel@ Stand by Switch @ Meter Switch@ VFO Indicator @ ATT IndicatorC Switch VOX Switch@ N B Switch C Connector@! H. S W Heater Switch @ B a N D Switch@ Function Switch @ Power Switch@ Drive Knob Display Hold SwitchRear Panel View @ Plate KnobRear PAN EL Controls @ DC-DC Converter Connecting Hole External VFO Connector@ Remote Connector PIN FunctionReceiver T U N I N G Preliminary ProcedureOperating Instructions Reading the Operating FrequencyCalibrating the Fixed Channel a N D VFO Freciuencies Calibrating T H E FrequenciesRF G a l N Calibrating the T S 8 2 0 W I T H VFO-820AGC a U T O M a T I C Gain Control If Shift9NOISE Blanker 1 Transmitter T U N I N GFront Panel Controls ALCUP 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 Operation9 Rtty Operation 6 Internal Cross Channel OperationMobile Operation Function TransmitOperation with a Phone Patch USE of Monitor SwitchSstv Slow Scan TV Operation Novice OperationTS-820 Block Diagram Transmitter Section Block D I a G R a MGeneral 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 Carrier Balance Adjustment if UNIT1 Adjustment of Transmitter SectionAdjustment of T R a N S M I T if Coil if a N D RF Units Neutralizing the Final StageTransmitter a N D Receiver Circuits TrolibleshootingGeneral Information 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.
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