23
Listening Hints
* These bands are reserved for sta-
tions in tropical areas.
** Interference is heavy in the 41m
band (7.100–7.300 MHz) because
amateur radio operators and interna-
tional stations share this range.
Aircraft Frequencies
Aircraft on international routes some-
times use SW. Most transmissions
are in SSB, although you can still
hear some AM transmissions. Here
are some bands where you might
hear aircraft communications.
4,650–4,750 kHz
6,545–6,765 kHz
8,815–9,040 kHz
11,175–11,400 kHz
13,200–13,360 kHz
15,010–15,100 kHz
17,900–18,030 kHz
Ships and Coastal Station
Frequencies
Most transmissions from ships and
coastal stations are in SSB and CW.
You can hear these transmissions in
the following bands.
2,000–2,300 kHz*
4,063–4,139 kHz
4,361–4,438 kHz
8,195–8,181 kHz
12,330–12,420 kHz
13,107–13,200 kHz
16,460–16,565 kHz
* The Coast Guard and small boats
use this band, with 2,182 kHz set
aside as the international distress and
emergency channel.
Time Standard Frequencies
The following frequencies announce
the exact time of day at specified in-
tervals.
WWV in Fort Collins, Colorado:
2,500 kHz
5,000 kHz
10,000 kHz
15,000 kHz
20,000 kHz
CHU in Canada: 7,335 kHz
V N G i n A u st r a l i a :
4 , 5 0 0 a n d 12,000 kHz
25
11.600–12.100
21
13.500–13.870
19
15.100–15.800
16
17.480–17.900
13
21.450–21.750
11
25.600–26.100
Band
(in meters)
Frequency Range
(in MHz)
20-230.fm Page 23 Friday, March 24, 2000 9:07 AM