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From YouTube: 98 HamCation 2021 WA2DFI TangerineSDR HiRes
Description
Scotty Cowling from https://tapr.org and https://tangerinesdr.com/ explains the project and the schedule at the ORI/TAPR Forum at HamCation 2021.
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So
what
are
the
components
of
the
tangerine
sdr
radio?
Actually,
it
has
four
components:
a
data
engine,
baseboard
kind
of
like
a
small
motherboard
rf
modules.
There
are
two
sockets
for
them,
so
you
can
use
one
two
of
the
same
or
two
different
ones:
a
socket
for
a
clock,
module
and
currently
there's
plans
for
one
particular
type
of
clock
module,
but
we're
open
to
future
modules
depending
on
the
performance
required
and
a
compute
engine,
which
is
typically
a
single
board
computer
or
a
host
computer.
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So
what
features
do
we
have
it's
an
fpga,
fpga-based,
gigabit,
ethernet,
direct
sampling
receiver?
We
offer
full
receive
coverage
from
100
kilohertz
to
60,
megahertz,
being
direct
sampling.
We
convert
the
entire
band.
At
the
same
time.
Very
nice
easy
to
use
web-based
configuration
program
so,
like
michelle,
said
no
software
to
load.
Now
your
browser
does
the
heavy
lifting
there
multiple
streams.
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As
michelle
also
said,
we
cover
all
bands
from
160
to
6
meters
and
we
additionally
have
a
usb
3
port
and
a
usb
2
port
for
expansion
for
things
like
rtl,
dvb,
dongles
or
additional
high
speed
data
channel
using
usb
3.
and
currently
the
out
of
the
gate.
We're
going
to
have
received
capability
but
transmit
capability
is
a
future
option.
We
are
planning
for
that,
so
you'll
end
up
with
a
transceiver.
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This
is
the
somewhat
convoluted
picture
of
what
the
thing
will
look
like
the
baseboard
is
in
black
in
the
middle
here.
The
blue
outlines
on
the
top
and
bottom
are
the
rf
modules
which
actually
go
in
underneath
the
on
the
top.
You
have
the
clock:
module
in
the
lower
right
and
an
I
o
module
in
the
upper
left,
which
is
compatible
with
the
raspberry
pi.
I
o
module,
and
so
you
end
up
with
basically
a
three
board
stack.
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That's
the
final
tangerine
system.
Then
of
course
the
ethernet
contr
connector
in
the
upper
right.
That
goes
off
to
the
local
computer,
local
host
computer
and,
by
the
way,
that's
a
two
stack
of
ethernet
ports.
So
you
get
two
ports,
the
third
port
that
we're
talking
about
the
three
port
adapter.
The
third
port
goes
to
the
fpga
down
here
in
the
lower
left.
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Okay,
the
rf
module
is
kind
of
defines
the
rf
performance
of
the
radio.
So
this
is
the
first
rf
module.
We
have
and
a
little
bit
of
an
eye
chart
here,
but
that's
the
block
diagram
of
the
module
that
plugs
in
again,
it's
a
plugable
module
features
of
the
module
dual
14
bit
a
d
and
122
mega
samples
per
second.
We
have
an
attenuator
on
board,
as
well
as
a
low
noise
amplifier,
and
we
have
a
fixed
55,
megahertz
low,
pass
filter,
which
is
removable
in
case.
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You
want
to
do
under
sampling
and
we
also
have
some
on-board
calibration
noise
sources
and
as
well
as
a
user-defined,
plug-in
filter.
So
if
you
want
to
lose
the
55-megahertz
bandpass
filter,
low-pass,
filter
plug
in
your
own
custom
filter
or
even
if
you
wanted
to
plug
in
the
preamplifier
that
is
supported
on
the
headers
on
the
rf
module
future
rf
modules,
personal
space
weather
station
receiver.
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We
are
thinking
about
doing
that
phase
four.
Well.
Actually,
this
is
the
first
one
personal
space
weather
station
receiver
is
the
first
one
we're
gonna
build
just
a
receiver,
then
we're
talking
about
many
different
rf
modules
to
support
the
multitude
of
lsi
receiver
and
transceiver
modules
that
are
coming
out
from
lime,
semiconductor
and
from
analog
devices.
So
you'll
see
those
coming
along
in
the
future.
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Next
up,
we
have
the
clock
module.
The
clock.
Module
was
designed
as
a
separate
plug-in
board
so
that
we
could
offer
a
basic
clock
caulking
system
at
an
inexpensive
price
or
work
your
way
up
to
a
gps
disciplined
oscillator
at
a
more
substantial
price
point
we're
going
to
start
out
with
a
gps
disabled
oscillator,
because
that's
what's
going
to
be
required
for
the
personal
space
weather
station.
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But
it's
going
to
be
a
very
high
performance.
Oscillator
and
john
ackerman
is
going
to
talk
on
that
right
as
soon
as
I
get
done
here
and
give
you
all
the
lowdown
on
the
gpsdo
clock:
module
future
data
engine
boards,
we're
talking
about
expandability
since
we're
modular,
so
maybe
larger
and
faster
fpgas,
more
ram
storage,
maybe
an
ssd
on
board
and
higher
speed
data
ports
advantage
of
using
gigabit
ethernet.
A
This
is
a
real
eye
chart
here,
but
it's
put
this
in
here
for
you
to
come
back
to
for
reference
and
it's
a
basically
a
comparison
price
and
feature
comparison
of
many
many
sdrs
that
are
currently
on
the
market.
Today
I
tried
to
limit
the
the
chart
to
boards
that
you
can
buy
they're
typically
boards,
so
I
didn't
really
include
full
blown
radios.
These
are
more
like
experimenter
boards
and
it's
very
difficult
to
compare
a
lot
of
these.
A
Okay,
so
that
said,
what
can
I
use
it
for?
Well,
the
first
application
is
going
to
be
the
hamsai
personal
space
weather
station,
but
the
plans
are
these
other
uses
down
here,
like
michelle,
said
the
phase
4
satellite
ground
station.
Perhaps
we'll
have
boars
for
that.
Definitely
academic
uses
to
teach
sdr
and
fpga
techniques
at
universities,
amateur
communications
sdr.
So
you
can
basically
pick
the
features
that
you
want
plug
them
in
get
the
performance
level
that
you
want
to
pay
for.
A
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This
would
be
the
personal
space
weather
station
example
with
a
mid-grade
receiver.
This
is
the
module
we're
working
on
now.
This
is
the
gpsdo
we're
working
on
now
and
the
data
engine
working
in
now,
so
this
configuration
will
be
first
out
of
the
gate,
the
satellite
ground
station.
We
would
use
under
sampling
on
the
receiver
with
an
external
lnb
and
an
upconverting
power
amplifier
at
the
dish,
and
basically
we
could
use
the
same
receiver
board
but
we'll
under
sample
and
we'll
have
a
new
transmitter
board.
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Well,
as
michelle
touched
on
a
little
bit,
we're
going
to
have
software
and
firmware
to
do
a
whisper,
monitor
and
an
ft8
monitor,
and
these
are
really
interesting
because,
like
michelle
said,
we
can
do
simultaneous
reception
of
all
bands
and
by
the
way
you
could
do
that,
while
you're
using
the
radio
as
a
personal
space
weather
station.
So
you
can
monitor
multiple
slices
of
frequencies,
so
you
could
be
on
listening
to
fta
or
and
whisper
at
the
same
time,
while
you're
monitoring
a
atmospheric
disturbance,
say
up
at
24
megahertz
or
some
frequency,
a
higher
frequency.
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You
could
connect
with
your
buddy
who
just
happened
to
appear
on
ft8
because
say
propagation
opened
up
to
the
midwest
and
you're
out
west,
and
now,
all
of
a
sudden,
you
can
hear
them
so
interesting
concept
of
working
dx
and
we'll
be
able
to
support
full
digital
mode
transmit
operations.
Once
we
build
ourselves
a
transmitter
and
another
interesting
thing
is
you
can
hook
it
up
to
your
local
home
network
and
you
can
have
multiple
radio
clients
hooked
to
the
same
radio
using
these
multiple
streams.
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So
what
is
tapper's
mission
in
all
this?
Michelle
touched
very
good
on
a
lot
of
that,
but
just
to
reiterate,
we
support
r
d
development
with
some
with
r
d
funding
and
funding
and
early
volume
production
and
the
result
is
we
end
up
with
a
growing
pool
of
contributors
and
experimenters
and
that's
kind
of
what
we're
aiming
for
our
webpage
tangerinesdr.com.