Panasonic RFB55 - Manual (Page 72)

Guide to Short Wave (SW)
■ Features of the meter bands
Meter bands
120 m (2.300-2.495 MHz) and 90 m (3.200-
3.400 MHz) Bdnds
These two bands are used solely in tropical re­
gions where unusual electrical activity and oth­
er types of noise make MW (AM) reception
impractical; They are used mainly for local
broadcasting. In comparison with MW (AM),
they are rather difficult to receive because of
noise of intermittent signals.
75 m Band (3:900-4.000 MHz)
This band is used for short-distance broad­
casting in tropicai regions.
60 m Band (4.750-^5.060 MHz)
This band is iike the 120 m and 90 m bands
and is used chiefly for local broadcasts in trop­
ical regions.
72
49 m Band (5.900-6.200 MHZ)
This band is mainly used for short and medi­
um-distance international broadcasts and lo­
cal broadcasts. Depending on the season, and
since international broadcasts use this
frequency instead of high frequencies, it is
possibie to receive broadcasts from many
countries.
41 m Band (7.100-7.350 MHz)
The propagation of this wave is similar to that
of the 49 m band. It is chiefly used for medium
to short-distance broadcasting.
31 m Band (9.400-9.990 MHz)
Heavily used for intermational as well as local
broadcasts. Short Wave broadcasts of differ­
ent countries are transmitted in this band, and
if the receiving conditions are favorable, it is
possibie to receive stations every 5 kHz.
25 m Band (11.600-12.100 MHz)
The propagation of this wave is simiiar to that
oftheSI m band, and follows the 31 mbandin
popularity because many internationai broad­
casting stations with strong output signals use
this band throughout the year.
21 m Band (13.570-13.870 MHz)
This band has only recently been allocated in-
termationally. The nature of wave propagation
ciosely resembles that of the 19-metre band.
19 m Band (15.100-15.800 MHz)
This is chiefly used by international broadcast­
ing stations and is regarded as the “Main
band”.
From this band to the higher frequency bands,
reception becomes difficult as the number of
solar spots decreases.
16 m Band (17.480-17.900 MHz)
This is used by international stations for pur­
poses: similar to the 19 m band, but because it
is greatly affected by any slight change in the
solar spots and in different seasons, reception
is often impossible. If stations are received at
all, they are surprisingly similar to strong signal
stations.