SYSTEM GROUNDING |
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To ensure the best reception, always connect a ground wire to the externai antenna jack. Connect the single wire
A suitable earth ground can be a clamp around a metal water pipe or a copper rod driven several feet into the earth. Radio Shack seils a copper ground rod (Cal. No.
To avoid interference and confusion, certain portions of the radio spectrum have been set aside for specific pur- poses. Perhaps the most familiar exam- ple is 540 - 1600 kHz, the standard AM broadcast band.
Ham radio operators use the foilowing bands:
160 meters = 1,800 - 2,000 kHz
80 meters = 3,500 - 4,000 kHz
Note that broadcasts and hams share 7,100
Broadcasts in tropical regions have special bands set aside for them. In such areas shortwave is the only way to reach isolated locations:
120 meters = 2,300 - 2,500 kHz
90 meters = 3,200 - 3,400 kHz
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40 meters = 7,000 - 7,300 kHz
20 meters = 14,000 - 14,350 kHz
15 meters = 21,000 - 21,450 kHz
10 meters = 28,000 - 29,700 kHz
75 meters = 3,900 - 4,000 kHz
60 meters = 4,750 - 5,060 kHz
The rest of the shortwave range is filled with marine, aeronautical and military stations. Such stations usuaily use
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International broadcasting stations have several bands set aside for them:
49 meters = 5,800 - 6,200 kHz
41 meters 7,100 - 7,500 kHz
31 meters = 9,500 - 9,900 kHz
25 meters = 11,650 - 12,050 kHz
19 meters = 15,100 - 15,600 kHz
16 meters = 17,550 - 17,900 kHz
13 meters = 21,450 - 21,850 kHz
11 meters = 25,600 - 26,100 kHz
either SSB or CW, and can be found outside the amateur and broadcast bands.
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