Kenwood TS-820 Sstv Slow Scan TV Operation, Operation with a Phone Patch, USE of Monitor Switch

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4.20 SSTV (SLOW SCAN TV) OPERATION

SSTV operation can be accomplished by simply connecting the output of SSTV camera to the PHONE PATCH IN jack [or MIC connector1 and the input of SSTV monitor t o the PHONE PATCH OUT jack (or SPEAKER jack).

Wllen transmitting signals from the SSTV camera. adjust its output so that the input power of the final stage is less than l0OW (less than 1 2 5 mA lpl.

4.21 OPERATION WITH A PHONE PATCH

The rS - 820 has rear panel lacks to fac~l~tateuslng the 1 s - 8 2 0 w ~ t ha phone patch The PHONE PATCH OUT fack has an impedance of 6 0 0 ohms and the PHONE PATCH IN fack requlres a hdgh Impedance Input See the lnstructlon sheet of the phone patch for cablang Instructdons

4.22 USE OF MONITOR SWITCH

To monitor the quality of transmit signal during SSR operation. set the MONITOR switch to ON to demodulate part of transmit IF signal.

This feature is useful when checking modulation conditions or adjusting the RF speach processor.

When monitoring, use a headphone to avoid howling effect. Note that if the H , SW switch is OFF or the DRIVE knob 1s incorrectly adjusted. the ALC circuit does not operate properly, causing the level of transmit IF signal t o become extremely high which results is distortion in the signal being monttored.

4.23 NOVICE OPERATION

The Kenwood TS-820 offers the unique opportunity to the beginning amateur of buying a top quality ham rig which adapts to novice operation at very llttle cost. So the initial equipment investment is good for what ever level of license to which the operator advances.

For the novice to operate the Kenwood within the legal po- wer limitat~on,all he has to do is remove one of the final tu- bcs from the final RF section and replace it with a low cost module available from your dealer. Alternately adjust the carrier level control TO keep the plate input power below 75 watts [approximately 9 0 ma]. Adjusting the carrier level yields much less power output because it reduces the effi- ciency of the tubes.

I.

F S K NARROW

11 Fig. 11 Change of the FSK WIDE - NARROW I Fia. 10 RTTY Freauencv

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Contents Operating Manual Contents Audio Output Impedance WWVMode Audio Input ImpedanceSection FeaturesOperation Location InstallationPower Connections UnpackingRtty FS K HeadphonesKEY External Speaker a N DAC Operation ANTSuitable PTT Microphone Front View Panel Operating Controls@ ATT Indicator @ Meter Switch@ VFO Indicator @ Stand by SwitchC Connector VOX Switch@ N B Switch C Switch@ Power Switch @ B a N D Switch@ Function Switch @! H. S W Heater Switch@ Plate Knob Display Hold SwitchRear Panel View @ Drive KnobRear PAN EL Controls PIN Function External VFO Connector@ Remote Connector @ DC-DC Converter Connecting HoleReading the Operating Frequency Preliminary ProcedureOperating Instructions Receiver T U N I N GCalibrating the T S 8 2 0 W I T H VFO-820 Calibrating T H E FrequenciesRF G a l N Calibrating the Fixed Channel a N D VFO Freciuencies1 Transmitter T U N I N G If Shift9NOISE Blanker AGC a U T O M a T I C Gain ControlUP on ALCFront Panel Controls 3 C W O P E R a T I O N 2 SSB O P E R a T I O N5 Fixed Frequency Operation 4 Operation W l T H a Linear AmplifierFunction Transmit 6 Internal Cross Channel OperationMobile Operation 9 Rtty OperationNovice Operation USE of Monitor SwitchSstv Slow Scan TV Operation Operation with a Phone PatchTS-820 Block Diagram Receiver Section Block D I a G R a MGeneral Transmitter SectionBoard a N D Unit Coil Pack Board PLL Unit Counter Assy Unit Display Unit Display Unit OptionAF AVR Board I N a L Stage Power Amplifier General Information Maintenance and AlignmentInstalling the D C D C Converter IDS AccessoriesI b l Transverter TV-5021 Remote Connections Extension Feet Fixed Channel Crystal InstallationAdjustment of Receiver Section Neutralizing the Final Stage Adjustment of Transmitter SectionAdjustment of T R a N S M I T if Coil if a N D RF Units Carrier Balance Adjustment if UNIT1Receiver Section TrolibleshootingGeneral Information Transmitter a N D Receiver CircuitsTransmitter Section SymptomsFAN TOP & Bottom View of the TS-820Page 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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