Kenwood TS-820 manual Operating Instructions, Preliminary Procedure, Receiver T U N I N G

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SECTION 4. OPERATING INSTRUCTIONS

. .

4.1 PRELIMINARY PROCEDURE

Set the MIC and CAR controls to zero and the MODE switch to LSB. USE. or CW to prevent acc~dentaltransmlt con- d~tionsbefore tunlng The TS-820 must be operated Into a 5 0 - 75 ohm antenna or dummy load w ~ t han SWR less than 2 1. Random length wlre antennas or light~bulbd u m ~ my loads cannot be used. Conventional half~waved~poies and b e a ~ nantennas should only be used at or near t l w r resonant frequency. Exceeding an SWR of 2 : 1 can damage the components in the output stage of the transceiver

Be sure to complete all of the requlred cabl~ng.as described in Section 2.3 - 2.8.

Wtth a su~tableantenna and m~crophone(or key1 connected to the transcelver. set the TS-820 sw~tchesto posltlonsdes- crlbed in Table 1

4.2 RECEIVER T U N I N G

Refer to Table 1 for the ~ n ~ tsw~tcha i settlngs of the TS 8 2 0 for recelvlng and then contlnue wlth the described proce dure

Push the POWER switch on The meter. d ~ ascale. and VFO ind~catorw ~ l light. ~ndicatingthat the transceiver is opera^ tlng The receiver section is fully solid-state allowing recep- tlon with the H SW switch turned to OFF. Advance the AF GAlN control clockwise until some recelver noise is heard in the speaker Turn the main tuning d ~ awl ~ t l i i nthe frequency range of the amateur band chosen u n t ~al signal is heard. Tune the signal for the clearest possible reception, and then adjust the DRIVE control for maximum deflection of the S-- meter.

The RF GAlN control varles the AGC feedback voltage whlch effects the S-meter reading. With the RF GAlN control fully clockwise, the S-meter glves a proper signal strength rea- ding. Tuning the control counter-clockwise reduces the RF GAIN, reducing signal strength and band noise

4.3 READING THE OPERATING FREQUENCY

The frequency dial of TS-820 indicates accurate carrier positions regardless of operating modes because of the use of a special circuit system. thus the transmit and receive fre- quency can be directly read on the dial, except for CW recep- t ~ o nin which case the frequency on the dial is lower by the beat frequency than the receive frequency.

When the d ~ g ~ tdisplayl D G - l ioptlon) is used.

If there is any difference between the frequencies on the dial

TABLE 1. Initial Switch Settinqs for Receivinq

 

 

CONTROL

POSITION

 

BAND Switch

Desired band

 

POWER Switch

OFF

 

H. SW Switch

OFF

 

Stand-by Switch

REC

 

NB Switch

OFF

 

RIT Switch

OFF

 

RF ATT

OFF

 

FUNCTION Switch

VFO

 

AGC Switch

SLOW or FAST

 

MODE Switch

To the appropriate sideband or CW

 

PLATE Knob

Middle of the range for the band

 

DRIVE Knob

Centered

 

RIT Knob

Centered

 

AF GAlN Knob

Fully counter-clockwise

 

IFSHIFT Knob

Centered

 

RF GAlN Knob

Fully clockwise

REAR PANEL CONTROLS

EXT VFO Connector

The jumpered plug must be in this socket

 

SG Swltch

ON (up position1

 

X VERTER Switch

OFF

The remaining controls do not affect reception so they may be in any position.

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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 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 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.
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