-

c

*~

-.~

For antenna adjustments. the transceiver may be loaded

 

The standard microphone sensitivity is within the range of

lightly, using the TUN position instead of operating at full

 

5

0 dB to - 6 0 dB.

If a microphone having a higher sensi-

power output. This will limit tube dissipation during adjust-

 

tivity is used. the ALC circuit will

not function properly. In

ments. and will also help to reduce interference on the fre-

 

this case, insert an attenuator as shown in the illustration at

quency. In any case, do not leave the transmitter on for very

:

right or connect a resistor (10k

- 33k ohms) in parallel

long at one time. Turn it on just long enough to tune and

 

w i t h the capacitor

1 0 0 pF

( C 9 4 ) in the

IF unit

load. and get a field strength reading. Start out with the an-

 

(X48-1150-00) of the transceiver.

 

tenna whip at about the center of its adjustment range. Set

 

 

 

 

 

 

the VFO to the desired operating frequency and then adjust

 

 

 

 

 

 

the PLATE control for a dip. and then the LOAD control.

 

 

 

 

 

 

Then observe the field strength reading. The field strength

 

 

 

 

 

 

meter may be set on top of the dash, on the hood, or at an

 

 

MIC

TS 820

 

 

 

MIC Connector

 

elevated location some distance from the car.

 

 

 

 

 

 

 

 

 

 

Change the whip length a half inch. or so at a time. retune

 

 

 

 

 

 

the finals each time. and again check the field strength at the

 

 

 

 

 

 

antenna. Continue this procedure until the point of maxi-

 

2.6

KEY

 

 

 

m u m field strength is found. This adjustment will be most

 

 

 

 

 

 

 

 

 

 

critical on 7 5 meters, somewhat less critical on 40. until on

 

If CW operation isdesired, connect a key to the KEY jack.

1 0 meters the adjustment will be quite broad. After tuning

 

 

 

 

 

 

the antenna to resonance. the finals can be loaded to full po-

 

2.7 EXTERNAL SPEAKER A N D

 

wer.

 

 

HEADPHONES

 

 

2.5 M I C R O P H O N E

 

Receive audio output from the TS-820 is 1.5 wattat 4 to 16

 

 

ohms The TS-820 has a built-in speaker. However. if an

Attach the microphone connector t o a suitable microphone

 

external speaker is desired for fixed station or mobile opera-

as shown in Figure 2. Besure that the PTT switch of the mi-

 

tion. Simply connect it to the SPEAKER jack on the real pa-

crophone is separate from the microphone circuit, as shown

 

nel. The speaker may be any good 8 ohm permanent ma-

in Figure 3.

 

gnet type in the 4 inch or large sire. The internal speaker is

It should be noted that a microphone with a 3P plug having

 

disconnected when an external speaker is used.

 

a common earth terminal cannot be used.

 

Headphones should also be 8 ohms impedance. When the

 

 

headphones are connected to the front panel PHONES jack

The microphone input is designed for high impedance (50k

 

the speaker is disabled.

 

 

ohms) microphones only. The choice of microphone is im-

 

 

 

 

 

 

portant for good speech quality. and should be given serious

 

2.8

RTTY (FS K)

 

 

 

consideration. The crystal lattice filter in the transceiver pro-

 

For RTTY operation. connect a teletypewriter to the RTTY

vides all the restriction necessary on audio response. and

 

 

KEY jack on the rear of the transceiver. Since this jack is

further restriction in the microphone is not required. It is

 

 

connected to the switching circuit for shifting frequencies. a

more important to have a microphone with a smooth. flat re-

 

 

relay should be inserted in the closed loop of the teletypew-

sponse throughout the speech range.

 

 

riter

for keying operation.

 

 

 

 

 

 

The microphone manufacture'sinstructions should be follo-

 

2.9 G R O U N D

 

 

 

wed in connecting the microphone cable to the plug. With

 

 

 

 

 

 

 

 

 

 

many microphones. the push-to-talk button must be pressed

 

So

preventing t o receive an electric shock. TVI

and BCI.

to make the microphone operative. For PTT operation. this

 

select a good. effective bround for installation and then con-

feature may be disabled. if desired. by opening the micro-

 

nect an earthing wire to the backside of GND terminal. use

phone case and permanently connecting the contacts which

 

a heavy earth line as big as possible. it is because short-line

control the microphone.

 

wiring is regarded as most effective for operation.

Page 5 Page 7
Page 6
Image 6
Kenwood TS-820 manual Key, External Speaker a N D, Headphones, Rtty FS K
Page 5 Page 7

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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