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Last
updated 6-28-2009
Next
Meeting
Program:
D-STAR
Protocol and
D-STAR Repeater Use, Charlie AE4UX
Date:
Monday
July 13, 2009
Rag
Chew: 7:00
PM Meeting:
7:30
PM
Location:
Aiken
Regional Medical Center,
6th
floor,
Classrooms A & B
Talk-in:146.730-
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Club
email:
K4NAB@bellsouth.net
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Preamble
GPS
Conversion
If
you need to convert a location from decimal notation to degrees /
minutes / seconds, it is easy. For instance, suppose you have
latitude of 47.857 degrees. Multiply .857 by 60 to get 51.42
minutes; multiply .42 by 60 to get 25.2 seconds. Now you
have 47 degrees, 51 minutes, 25 seconds.
Since we have
rounded the seconds off to 25, we can go the other direction to
demonstrate the method for deriving the corresponding decimal
notation. For example, (25/3600) + (51/60) + 47 is
approximately 47.856944 degrees.
ARRL
Club Newsletter
Copied
from ARRL Club Newsletter
February
23, 2007 Elmer's Corner -- Observing Band Edges
There
is sure to be a lot of new HF activity when the new regulations
take effect on February 23. Please remember that operators are
required to keep their entire transmitted signal within the band
limits. This means that if you are operating SSB mode your signal
is typically 2.8 kHz wide so a rule of thumb is to stay 3 kHz
from the edge of the band. For example if a Technician class
operator wants to operate SSB on the 10 meter band then the
operator should not operate any lower than 28.303 MHz or any
higher than 28.497 MHz in order to stay within the band limits.
Band edges also need to be observed when operating CW, RTTY,
Data and all modes permitted in the Amateur service.
Overdriving an SSB transmitter make your signal
unreadable and it will cause splatter that can be outside of the
band. It is not just good amateur practice to produce clean
transmitted signals--it's also the law, part 97.303.
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