Ramsey Electronics SC1, Руководство пользователя

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SC-1
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13
SETTING YOUR LISTENING BANDS
The nice thing about the SC1 for beginners is that you'll hear some kind of
shortwave signals as soon as you hook it up to your AM radio and a suitable
antenna. As long as you wired it up right, your AM radio has no choice but to
tune shortwave! You can enjoy the SC1 without even knowing what
frequency you are hearing. Exactly which frequency band you are really
hearing is another question - and the topic of this section!
To adjust L1 and L2 for your desired listening range, you will need a plastic
alignment tool. If you do not have one and do not wish to buy one, a suitable
tool can be made by sanding the tip of a wooden matchstick, kabob stick, or
small plastic knitting needle. A metal screwdriver tip will not permit accurate
adjustment, since the metal itself will detune the coils.
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If you know all about shortwave broadcasting, you'll be able to make
your own decisions on how to set up L1 and L2 for your choice of two 1
MHz SW bands selected by S2, tuned by the AM radio.
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If you aren't familiar with shortwave broadcast band frequency
allocations but have and know how to use test equipment such as a
signal generator and frequency counter, you will be able to set up the
SC1 to tune exactly what you want.
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If you are a newcomer with no knowledge of shortwave or any precision
test equipment, you can still adjust the SC1 to let you tune around your
chosen band on your AM-radio.
First, let's take a look at what is possible to hear on your SC1. The following
are the internationally-designated shortwave broadcasting bands:
A. Using L2 ("Night Listening") - S2 pushed IN:
4.750-5.060 MHz (Lower power,regional "tropical" broadcasting)
5.950-6.200 MHz (Late evening)
7.100-7.300 MHz (Late afternoon, early evening)
B.Using L1 with B-C jumper - S2 in OUT position:
9.500-9.900 MHz (Always "something" on, 24 hours a day!)
11.650-12.050 MHz (Generally good daytime broadcasting)
C. Using L1 with A-B jumper - S2 in OUT position:
11.650-12.050 MHz (Generally good daytime broadcasting)
15.100-15.600 MHz
17.550-17.900 MHz