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What 

can 

receive 

??? 

There are thousands 

of 

stations available on short wave when the 

conditions are right. Many will beam English programs into North 
America at certain times 

of 

the day. On an evening 

in 

August, English 

broadcasts were received from the following stations. 

All 

frequencies in kHz 

Voice of Vietnam 

Norwegian Radio 

Radio Kuwait 

BBC World Service 

Brazil Radio 

Radio Netherlands 

Voice 

of 

Russia 

Radio Thailand 

Voice 

of 

Israel (Jerusalem) 

Voice of America 

Romania Radio 

RAI International (Italy) 

Radio Argentina 

Islamic Republic of Iran 

Polish Radio (Warsaw) 

China Radio International 

Christian Science Monitor 

15009 

& 9840 

71 20 

11990 

6180,6195,9410,12095,15070 

15265 

1 3700 

11630&11677 

721 

7465,9435,15615 

9760 

11810 &11940 

9670 

15345 

9022 

7285 

9920 

1 3770 

Содержание HF3

Страница 1: ...A GUIDE TO USING THE TARGET HF3 RECEIVER SH0RT WAVE LISTENING r 0 BY ALAN J MULLEY luIQ 1...

Страница 2: ...e is made to a stationswavelength rather than it s frequency High frequency signals have short wavelengths and low frequency signals have long wavelengths The frequency of a signal in kHz is given by...

Страница 3: ...equencies between 1 6 MHz and 30 MHz are referredto as Short Waves S W MW sw I The HF3 covers all of these bands in one continuous sweep with steps of 1 kHz Numbersto the left of the decimal point are...

Страница 4: ...ct directly to any Mains Supply without the aid of a qualified Electrician Plug the 12 Volt line from the power supply into the receiver plug in the antenna and set the attenuator on the rear of the r...

Страница 5: ...re crowded with domestic and foreign broadcast stations When tuning a station rotate the tuning knob to obtain the highest number on the Signal Strength Meter Tune between 300 and 400 kHz for marine a...

Страница 6: ...fully then the result of the modulationproduces a carrier an upper sideband of frequencies and a lower sideband of frequencies All this takes up space on the radio spectrum Now since the upper and low...

Страница 7: ...uses overload and distortionthen switch the attenuator to the ATTEN position Remember to switch it back to normal for weaker stations The HF3 has been designed to handle comparatively large signals at...

Страница 8: ...ncies in kHz Voice of Vietnam NorwegianRadio Radio Kuwait BBC World Service Brazil Radio Radio Netherlands Voice of Russia RadioThailand Voice of Israel Jerusalem Voice of America Romania Radio RAI In...

Страница 9: ...gular language courses Details on World Service broadcasts There are many Comprehensiveguides availablegiving Frequencies and scheduled transmission times Make sure that you get an up to date copy as...

Страница 10: ...eceiver then use 70 ohm co ax TV Aerial cable between the receiverand the antenna If an outside antenna is not practical then the antenna can be fitted as high as possible in the loft Reasonable resul...

Страница 11: ...ions may be poor wait until conditions improve Check the antenna wire re site the antenna if necessary HIGH LEVELSOF INTERFERENCEARE EXPERIENCED Locatethe source of interferenceif possible Turn off al...

Страница 12: ...is commonly called slope detection DISPLAY SHOWS RANDOM CHARACTERS A supply transient could upset the internal processor If turning the tuning knob does not clear the problem then press RST This perfo...

Страница 13: ...nna Socket Power Socket Clockwise on Continue for volume increase Set at centre blue mark up tune either side of centre Displays selected Mode only Bar Graph increaseswith received Signal Strength Ros...

Страница 14: ...hown inthe user guide Withthe computer and its peripheralsturned off tune the receiver to a localfacsimilestation Forthe UK the most usefulstations are BRACKNELL on 4610 8040 14436 KHZ NORTHWOOD on 23...

Страница 15: ...noise is being conducted along the shield of the cable A data lead with an inline filter is available at most radio supply stores RECEIVINGPICTURES With the computer in DOS and the C prompt displayedt...

Страница 16: ...t the picture The blips will create a vertical line somewhere at the top of the screen Using the c or key move this line until it is off the screen either to the left or right When the blips stop the...

Страница 17: ...re received This correspondsto the upper and lower frequencytones of the signal Usingthe keys movethe red line untilit is central betweenthe peaks Press Hagain to returnto the display page Some statio...

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