Episode Transcript
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0:00
Foundations of amateur radio.
0:02
A recent comment by a
0:04
fellow amateur sparked a train of
0:07
thought that made me wonder why
0:09
there is a pervasive idea within
0:11
our community, that you need a
0:13
radio transmitter and antenna to be
0:15
a radio amateur. Moreover, that for
0:17
some reason, if you don't have
0:19
either, you're not a real amateur.
0:22
I suppose it's related to the
0:24
often repeated trope that the internet-enabled
0:26
modes, like All Star Link, Echo
0:28
Link and even IRLP, are not
0:30
real radio, despite evidence to the
0:33
contrary. Instead of fighting this weird
0:35
notion, I figured I'd get on with
0:37
it and find a way to play,
0:39
even if you don't currently have the
0:41
ability to erect an antenna or key
0:43
a transmitter for whatever reason. Before
0:45
I dig in, a web SDR
0:48
is a software-defined-defined radio connected to
0:50
the internet. It allows a user to
0:52
open a web browser, pick from a
0:55
massive collection of receivers around the world
0:57
and listen in. Some of these also
0:59
have the ability to transmit, but more
1:01
on that later. Here's the idea. Have
1:04
you ever considered tuning to a
1:06
web SDR, using it to pick
1:08
a signal, and using your computer
1:10
to decode that signal? I'm aware that
1:12
some sites provide a range of
1:15
inbuilt decoders, but that doesn't cover
1:17
the wide spectrum of modes that
1:19
amateur radio represents, let alone the
1:21
modes that are not specific to
1:24
our hobby. As I've said previously, many
1:26
of the modes in-use today are essentially
1:28
the width of an audio stream. This
1:30
means that if you tune a web
1:32
SDR to a frequency, the audio comes
1:35
out of your computer speakers. If
1:37
that's voice, your job is done and
1:39
you can hear what's going on. If it's
1:41
something else, then you're going to have
1:43
to find a way to decode this
1:45
to get the message. So if you
1:47
send the audio from your web browser
1:50
into something like FLDG or WSJX, you'll
1:52
be able to decode the signal if
1:54
it's supported by those tools. This is
1:56
true for all the other tools too, more
1:59
spitty you name. Depending
2:01
on which operating system you're using,
2:03
the way to implement this will
2:05
differ. Starting with a search for
2:07
a WebSTR and WSJX will get
2:10
you on your way. You might
2:12
ask why I'm advocating WSJTX even
2:14
though it only supports a small
2:16
set of modes. And that's a
2:18
fair question. In my experience,
2:20
it's the simplest to get running
2:23
and get results. Two tips.
2:25
Make sure you set your configuration
2:27
to indicate that you don't have
2:29
a radio, otherwise it's going to
2:31
attempt to control something that isn't
2:33
there, and make sure that your
2:35
computer clock is set accurately using
2:37
NTP or network time protocol. You can
2:39
thank me later. Now, I hinted earlier
2:41
at transmitting. There's a growing range
2:43
of places where your amateur license will
2:45
give you access to a station somewhere
2:47
on the internet, and with that the ability
2:49
to get on air and make noise.
2:51
An increasing number of radio amateur
2:54
clubs are building remote stations for
2:56
their members to enjoy. There are
2:58
also individuals and small groups doing
3:00
the same independently. A few organisations
3:03
are offering this as a service
3:05
to paid subscribers. These tools often
3:07
implement a remote desktop session where
3:09
you connect to a computer that
3:11
in turn is connected to a radio.
3:13
The supported modes depend on what is
3:15
installed at the other end. Others implement
3:18
a slightly different method where
3:20
you run specialised software locally,
3:22
sometimes inside a web browser,
3:24
that connects to a server across the
3:26
internet, allowing you to run whatever digital
3:29
mode you want on your own computer.
3:31
I'll point out that even if you start
3:33
with receiving digital modes using a
3:35
web SDR, you can expand that
3:37
into transmitting at a later stage.
3:39
So, no antenna, no transmitter, no
3:42
problem, no problem, still an amateur.
3:44
Still an amateur. Still an amateur.
3:46
I'm Ono, Victor Kilo, 6, Foxtrod,
3:49
Lima, Alpha Bravo.
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