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- Martin Larsen
December 27, 2012, 10:18 pm

Der har lige været en tråd om dampradioer, hvilket fik mig til at tænke
på noget jeg har ville spørge om et stykke tid:
Software Defined Radio (SDR).
Det er først for nylig jeg stødte på en artikel om det ved et tilfælde
og jeg synes det lyder enormt spændende.
Er der nogen af som har erfaring med det? Er det nogenlunde let at
tilgå, og hvordan er det i forhold til "gammeldags" radio?
på noget jeg har ville spørge om et stykke tid:
Software Defined Radio (SDR).
Det er først for nylig jeg stødte på en artikel om det ved et tilfælde
og jeg synes det lyder enormt spændende.
Er der nogen af som har erfaring med det? Er det nogenlunde let at
tilgå, og hvordan er det i forhold til "gammeldags" radio?

Re: Software defined radio

Ja, det er let at gå til, det mester drejer sig om software, selve den
elektriske del er rimelig overskuelig. Man kan for få hundrede kroner
lave en radio der er som en der kostede adskellige tusinde for år tilbage.
F.aks. kan man købe en af de moderne digitale TV modtager dongler
til en halvtredser, så kan man modtage hele VHF og UHF området
ved hjælp af den og en computer.
Søg lidt på SDR på nettet og så finder du masser af artikler
om emnet, på youtube er der også masser.
Noget specielt du tænker på at lytte ?
--
Mvh
Max
Mvh
Max

Re: Software defined radio
Max wrote:

Nej egentligt ikke, men jeg har altid været interesseret i
kortbølgelytning og har en fin sony SW100 som jeg førhen brugte en del i
udlandet til at høre bl.a. DR kortbølge samt BBC mv.
Selv om jeg ikke har lyttet til kortbølge i nogle år interesseret det
mig stadig, og når det så kombineres med computer er det yderligere et plus.

Nej egentligt ikke, men jeg har altid været interesseret i
kortbølgelytning og har en fin sony SW100 som jeg førhen brugte en del i
udlandet til at høre bl.a. DR kortbølge samt BBC mv.
Selv om jeg ikke har lyttet til kortbølge i nogle år interesseret det
mig stadig, og når det så kombineres med computer er det yderligere et plus.

Re: Software defined radio

Du kan prøve at søge på
www.brugtgrej.dk
hvor der ofte findes modtagere til SDR. Bl.a. fra EDR's horsensafd. har
de haft et project med SDR kaldt LIMA, der oprindeligt stammer fra
Tyskland som byggesæt.
--
Ha' det rart.
Karsten H. (7870), OZ1GB
Ha' det rart.
Karsten H. (7870), OZ1GB

Re: Software defined radio
On 27/12/12 23.18, Martin Larsen wrote:
...

...
Hej Martin
SDR findes i din:
* Mobiltelefon
* Smart-phone
* Trådløse access-punkt/router
* Trådløse netkort
* Bluetooth dimser
* De fleste DVB-T/S/C(2) dimser (USB, tv-modtagerbokse, TV,
harddiskoptagere, media-centre, HTPC...)
...
-
Mange frit tilgængelige internet-fjernstyrede radiomodtager er baseret
på SDR - prøv dem via kilderne og links!:
http://da.wikipedia.org/wiki/Internet-fjernstyret_radiomodtager
A Brief Discussion of Some Software DSP Solutions I've tried:
http://www.nitehawk.com/w3sz/w3szdspnew.htm
Citat: "...
DSP is an acronym for "Digital Signal Processing". Anytime an analog
signal is converted to digital form and processed in some way, that is
DSP. The use of DSP techniques in amateur radio is exploding, both in
terms of its use in commercial transceivers and receivers, and in terms
of homebrew hardware and software construction projects available to and
undertaken by hams
...
I have found that Linrad does an absolutely superb job of allowing me to
hear the desired weak signal hidden in the midst of the all the noise
and clutter present at my QTH. It does this better than any other
receiving system I have ever tried.
...
[PS: Nu kan man også få musearm af at være radioamatør...:]
By clicking with the mouse cursor at any point on the waterfall
...
IT IS POINT AND CLICK RECEIVING!!!
...
If you want a different filter bandwidth or shape factor, you just take
the mouse over to the baseband display, and drag the filter curve wider
or narrower, and the filter adjusts graphically. THIS REALLY WORKS!!
..."
-
Teknisk:
Se:
http://da.wikipedia.org/wiki/Software_defineret_radio
SDR anvendes typisk sammen med:
Zero-IF receiver:
http://en.wikipedia.org/wiki/Direct-conversion_receiver
Andre relaterede eller ens termer (kært barn har mange navne?):
Quadrature Sampling Detector QSD
(Dan Tayloe N7VE):
Tayloe Detector
IQ based tranceiver
Dirodyne
Til sender: quadrature-sampling exciter (QSE)
God (tysk): Quadrature Sampling Detector - ein moderner
Geradeausempfänger [retmodtager]:
http://www.andreadrian.de/sdr/index.html#mozTocId54134
IQ-kanalerne laves noget i denne stil:
http://en.wikipedia.org/wiki/Quadrature_amplitude_modulation#Receiver
I/Q In-phase/Quadrature component:
http://en.wikipedia.org/wiki/Quadrature_phase
Citat: "...The component that is in phase with the original carrier is
referred to as the in-phase component. The other component, which is
always 90° (\begin \frac \end radians) out of
phase, is referred to as the quadrature component..."
IQ-signalbehandling er faktisk en gammel metode som også anvendes ved
analog (og digital) SSB-(de)modulation:
http://en.wikipedia.org/wiki/Single-sideband_modulation#Hartley_modulator
Citat: "...
To generate an SSB signal with this method, two versions of the original
signal are generated which are mutually 90° out of phase. Each one of
these signals is then mixed with carrier waves that are also 90° out of
phase with each other. By either adding or subtracting the resulting
signals, a lower or upper sideband signal results.
..."
Det er vistnok denne metode YU1LM anvender:
http://en.wikipedia.org/wiki/Single-sideband_modulation#Weaver_modulator
Citat: "...
In Weaver's method, the band of interest is first translated to be
centered at zero, conceptually by modulating a complex exponential
exp(j?t) with frequency in the middle of the voiceband, but implemented
by a quadrature pair of sine and cosine modulators at that frequency
(e.g. 2 kHz). This complex signal or pair of real signals is then
lowpass filtered to remove the undesired sideband that is not centered
at zero. Then, the single-sideband complex signal centered at zero is
upconverted to a real signal, by another pair of quadrature mixers, to
the desired center frequency.
..."
ZERO-IF AND NEAR-ZERO-IF QUADRATURE RECEIVERS FOR SDR:
http://www.sdrforum.org/pages/sdr02/HW3-01%20Gu.pdf
Citat: "...
Zero Intermediate Frequency (ZIF) and Near Zero
Intermediate frequency (NZIF) quadrature receivers are
more sensitive to circuitry mismatch, which causes I-Q
imbalance that may be frequency dependent over the
signal bandwidth.
..."
I Softrock anvendes 74HC4052 og andre CMOS baserede digitalt styrede
kontakter som I/Q-mikser:
SM 5 BSZ - I/Q mixer for direct conversion radio
(Sept 28 2001):
http://www.sm5bsz.com/linuxdsp/iqmixer.htm
Citat: "...
The simple HCMOS mixer in fig 1. produces a second order spur at -50dB
when the level is adjusted for a standard low noise op-amp to degrade
the dynamic range by less than 3dB.
...
Fig 1. A quadrature nixer [mixer] using 74HC4052. The control inputs are
fed from a synchronous counter that divides a local oscillator by four.
As a result the switch loops through all four positions during a period
of 4 local oscillator cycles, see fig. 2. For each switch position only
one connection is made between the antenna and either output. This way
the make before break operation of the switch will not cause
shortcircuits across the coil as would be the case using 74HC4053 as in
an older design. The dynamic range of the 74HC4052 design is superior
to that of the 74HC4053 design.
..."
-
Ældre:
RX-350 HF DSP RECEIVER (der findes en bedre udgave idag med DRM (Digital
Radio Mondiale) MF-udgang):
http://www.tentec.com/rx350.htm
"...
The built-in 34 bandwidth filters from 300 Hz to 8 kHz are instantly
selectable by turning a knob. All filters are independent of mode -
use any available filter in any receive mode.
...
Momentary 'SWEEP' function shows band activity in 8 selectable
coverage rates. Find the signals without even being on frequency!
Simply tune to a desired frequency, select one of 8 SWEEP ranges, and
press the SWEEP button. Signals will be shown on the bar graph on
opposite sides of the starting frequency. A cursor will appear and
allow you to tune RX-350 to any signal visible on the screen. Easy!
...
RX-350 HF DSP Receiver $1199.00
...
SPECTRUM SWEEP DISPLAY 8 widths from 240 Hz to 2.4 MHz, with tuning
cursor and selectable Autosweep function.
..."
-
Her er en fiks og færdig SDR/DSP baseret HF-transceiver:
Ten-Tec is pleased to announce the successor to the original ORION
transceiver: ORION II:
http://radio.tentec.com/Amateur/Transceivers/TT565
Pris - sølle 3995$...av. Og så kan man ikke engang se SSTV, fjernsyn
eller Doom II på farveskærmen. Det er simpelthen anakronistisk at de har
sat et antikt drejespoleinstrument på forsiden hvor farveskærmen også er...
Opgradering? = ny firmware!
-
Det flyder også med selv-byg SDR:
SoftRock-40:
http://groups.yahoo.com/group/softrock40/
Citat: "...
The SoftRock-40 is a small, low-cost, good performing 40-meter "software
defined radio" receiver that plugs into a computer USB port and delivers
I-Q audio signals to the computer's sound card. It was designed by Tony
Parks, KB9YIG and Bill Tracey, KD5TFD as an "SDR sampler project" for
hams everywhere to easily try out software defined radio.
..."
og deriviater:
8. November 2008 Informationen zum SoftRock RXTXv6.3 XTALL:
http://softrock.raisdorf.org/RXTXv6-3.html
http://www.sdr-kits.net/
http://www.amqrp.org/kits/softrock40/
PowerSDRv1.12.0 SoftRock RxTx Si570 Setup.msi:
http://code.google.com/p/powersdr-iq/downloads/detail?name=PowerSDRv1.12.0%20SoftRock%20RxTx%20Si570%20Setup.msi&can=2&q=
http://powersdr-softrock-rxtx-si570.software.informer.com/
PowerSDR Software For Software Defined Radio I.F. Stage Use
http://www.wu2x.com/sdr.html
http://www.nonstopsystems.com/radio/frank_radio_sdr.htm
http://www.nonstopsystems.com/radio/
http://www.hamsdr.com/WA2DFI/Hands_On_SDR_%20Dayton_2008_v0_9.ppt
http://qrpradio.org/pub/softrocks/manuals/softrock%20v6.1%20rxtx/
Euro SOFTROCK-RXTX ?87:
http://www.wsplc.com/acatalog/SOFTROCK-RXTX.html
Essex:
http://www.wsplc.com/contactus.php
http://www.wsplc.com/acatalog/Kits_-_Softrock.html
http://www.m0kgk.co.uk/sdr/softrocks.php
http://wb5rvz.com/sdr/RXTX_V6_3/
Softrock RxTx:
http://www.softrockradio.org/node/171
SoftRock V7.0:
http://www.softrockradio.org/node/31
http://www.qrpradio.org/pub/softrocks/manuals/softrock%20V7/
http://www.qrpradio.org/pub/softrocks/manuals/
A small, low-cost "Software Defined Radio" receiver kit for 40-meters,
used with powerful software on the PC for multi-mode operation:
http://www.amqrp.org/kits/softrock40/
-
For radioamatører (ældre):
W7PUA DSP-10 2 Meter.
[SDR] Software Defined Transceiver.
Surface-Mount Kit:
http://www.tapr.org/tapr/html/Fdsp10.html
The DSP-10 is an amateur-radio, software-defined 2-meter transceiver
that can be built at home. It operates on SSB, FM and CW modes.
Features are tailored to operation with weak signals on VHF, UHF and
Microwave frequencies.
DSP-10 All-Mode 2m:
http://www.proaxis.com/~boblark/dsp10.htm
DSP-10 Weak-Signal Update.
2-Meter EME [Earth-Moon-Earth] QSO with Single Yagis and 150 Watts:
http://www.proaxis.com/~boblark/wksig1.htm
W7PUA DSP-10 2 Meter
Software Defined Transceiver
Surface-Mount Kit
http://www.tapr.org/tapr/html/Fdsp10.html
-
We're creating an open source Software Defined Radio. We're designing
the s/w and h/w to enable experimentation with the latest digital
wireless protocols:
http://sourceforge.net/projects/opensdr/
http://opensdr.sourceforge.net/
http://sourceforge.net/projects/opensdr/
http://prdownloads.sourceforge.net/opensdr/
-
http://gnuradio.org/
http://www.gnu.org/software/gnuradio/
http://mail.gnu.org/mailman/listinfo/discuss-gnuradio
-
RadioRaft 3.21
Multimode Radio Data Decoder Software for decoding
12 ARQ modes, 10 FEC modes, 3 packet modes and many others ...
http://radioraft.pagespro-orange.fr/
-
openQRP:
http://openqrp.org/
Software Defined Radio:
http://sdr-radio.com/
SDR forum 2.0:
http://www.wirelessinnovation.org/
Software Defined Radio "Blueberry SDR":
http://www.andreadrian.de/sdr/index.html
Building and Using the WB6DHW
http://wb6dhw.com/AD995x%20Manual.pdf
http://www.hamsdr.com/dnld.aspx
http://www.hamsdr.com/dnld.aspx?id10%37
This software can demodulate DRM, AM, FM, SSB, CW from 12 kHz IF signal:
http://drm.sourceforge.net/
http://www.n9vv.com/hamradio.html
issue 365, May 2007, Elektor: Software Defined Radio With USB interface:
http://www.elektor.com/magazines/2007/may/software-defined-radio.91527.lynkx
http://www.arrl.org/software-defined-radio
A Software Defined Radio for the Masses, Part 4:
http://www.arrl.org/tis/info/pdf/030304qex020.pdf
DIGITAL IF: The VITA (49) Radio Transport (VRT)
Providing Interoperability for Software Defined Radios:
http://web.archive.org/web/20110629072525/www.digitalif.org/
http://www.digitalif.org/
jansky eme:
http://www.nitehawk.com/rasmit/
http://www.nitehawk.com/rasmit/dsp50.html
http://www.physics.princeton.edu/pulsar/K1JT/
http://www.dxzone.com/tag-weak-signal/
http://sharon.esrac.ele.tue.nl/mirrors/zl1bpu/MFSK/INDEX.html
MFSK means Multi - Frequency Shift Keying
http://xoomer.virgilio.it/aporcino/Stream/index.htm
http://xoomer.virgilio.it/aporcino/
http://www.sm5bsz.com/
http://microtelecom.it/perseus/
849,00 ?
http://www.ssb.de/product_info.php?info=p1390_Perseus-SDR-Kurzwellenempfaenger-10-kHz---40MHz.html
http://www.sdrham.com/winrad/
VIP Perseus hovedside:
http://openhpsdr.org/
http://tapr.org/
$1100
http://www.hpsdr.eu/
http://openhpsdr.org/wiki/index.php?title=Main_Page
http://openhpsdr.org/wiki/index.php?title=MERCURY
Penelope:
http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item27%0519945097
http://openhpsdr.org/wiki/index.php?title=A_complete_HPSDR_transceiver
http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
Mail-lister:
http://openhpsdr.org/reflector.html
-
http://www.flex-radio.com/
http://www.flex-radio.com/Products.aspx?topic=powersdr1x
http://uwsdr.berlios.de/
http://www.flex-radio.com/
Citat: "...
Additionally, all A/D conversions are performed internally in the
FLEX-5000 so a sound card is not required. There are two additional
versions of the FLEX-5000 (models C and D) that provide higher levels of
integration.
...
The FLEX-5000C? model has a built in Intel Core2 Duo processor and comes
with the Microsoft Windows XP operating system, wireless keyboard and
mouse. The FLEX-5000D? includes everything above and adds a 9" LCD
display with touch screen, 300 Watt PA and a large tuning knob.
..."
The FlexRadio FLEX-5000A?
High Performance Software Defined Radio at its Best!
http://www.flex-radio.com/Products.aspx?topicF5%Ka_details
Citat: "...
Top Performing Narrow-Spaced Two-Tone 3rd Order IMD Dynamic Range at 2
KHz - (Not 20 KHz Like Everyone Else Advertises). An Incredible 105 dB
on 14 MHz.
...
Industry Leading Narrow Spaced 3rd Order Intercept Point: +33 dBm at 2
KHz Tone Spacing.
...
No Sound Card Required!
No longer do you have to worry about interfacing a sound card to your
PC. The FLEX-5000 has integrated the A/D and D/A processing hardware
built inside the radio. A high quality 192 KHz 24-bit DACs with
exceptional performance numbers provides the spectral samples for the
DSP to process. The integrated converters also eliminate audio cabling
requirements between the transceiver and PC.
...
True Full Duplex Operation for Simultaneous Transmit and Receive
...
True Diversity Receiving with the Second Independent Receiver
...
By locking both receivers to the same frequency you can produce "stereo
diversity" which allows your brain to more easily sort the signal from
the noise.
...
Single 1394 FireWire Connection to your Computer
...
Transverter Ready - Full Duplex 28 MHz IF
The FLEX-5000's incredible receiver is perfect for weak signal VHF+ and
WSJT operation as a 28 MHz IF for interfacing to external transverters.
The FLEX-5000 will turn your VHF-UHF-microwave setup into the highest
performance station around. Full duplex operation opens the door for
satellite communications as well.
...
No External Calibration Equipment Required
..."
FLEX-5000 Block Diagram
This PDF file is the block diagram of the FLEX-5000 full duplex /triplex
architecture:
http://support.flex-radio.com/Downloads.aspx?id15%2
Fundet via:
http://support.flex-radio.com/Downloads.aspx
-
MAX2023
High-Dynamic-Range, Direct Up-/Downconversion 1500MHz to 2300MHz
Quadrature Mod/Demod.
Highest Linearity, Lowest Noise 1.5GHz to 2.3GHz ZIF
Modulator/Demodulator Enables Zero-IF Direct-Conversion Architectures
for DCS/PCS EDGE BTS Transmitters:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/5141
/Glenn
...

...
Hej Martin
SDR findes i din:
* Mobiltelefon
* Smart-phone
* Trådløse access-punkt/router
* Trådløse netkort
* Bluetooth dimser
* De fleste DVB-T/S/C(2) dimser (USB, tv-modtagerbokse, TV,
harddiskoptagere, media-centre, HTPC...)
...
-
Mange frit tilgængelige internet-fjernstyrede radiomodtager er baseret
på SDR - prøv dem via kilderne og links!:
http://da.wikipedia.org/wiki/Internet-fjernstyret_radiomodtager
A Brief Discussion of Some Software DSP Solutions I've tried:
http://www.nitehawk.com/w3sz/w3szdspnew.htm
Citat: "...
DSP is an acronym for "Digital Signal Processing". Anytime an analog
signal is converted to digital form and processed in some way, that is
DSP. The use of DSP techniques in amateur radio is exploding, both in
terms of its use in commercial transceivers and receivers, and in terms
of homebrew hardware and software construction projects available to and
undertaken by hams
...
I have found that Linrad does an absolutely superb job of allowing me to
hear the desired weak signal hidden in the midst of the all the noise
and clutter present at my QTH. It does this better than any other
receiving system I have ever tried.
...
[PS: Nu kan man også få musearm af at være radioamatør...:]
By clicking with the mouse cursor at any point on the waterfall
...
IT IS POINT AND CLICK RECEIVING!!!
...
If you want a different filter bandwidth or shape factor, you just take
the mouse over to the baseband display, and drag the filter curve wider
or narrower, and the filter adjusts graphically. THIS REALLY WORKS!!
..."
-
Teknisk:
Se:
http://da.wikipedia.org/wiki/Software_defineret_radio
SDR anvendes typisk sammen med:
Zero-IF receiver:
http://en.wikipedia.org/wiki/Direct-conversion_receiver
Andre relaterede eller ens termer (kært barn har mange navne?):
Quadrature Sampling Detector QSD
(Dan Tayloe N7VE):
Tayloe Detector
IQ based tranceiver
Dirodyne
Til sender: quadrature-sampling exciter (QSE)
God (tysk): Quadrature Sampling Detector - ein moderner
Geradeausempfänger [retmodtager]:
http://www.andreadrian.de/sdr/index.html#mozTocId54134
IQ-kanalerne laves noget i denne stil:
http://en.wikipedia.org/wiki/Quadrature_amplitude_modulation#Receiver
I/Q In-phase/Quadrature component:
http://en.wikipedia.org/wiki/Quadrature_phase
Citat: "...The component that is in phase with the original carrier is
referred to as the in-phase component. The other component, which is
always 90° (\begin \frac \end radians) out of
phase, is referred to as the quadrature component..."
IQ-signalbehandling er faktisk en gammel metode som også anvendes ved
analog (og digital) SSB-(de)modulation:
http://en.wikipedia.org/wiki/Single-sideband_modulation#Hartley_modulator
Citat: "...
To generate an SSB signal with this method, two versions of the original
signal are generated which are mutually 90° out of phase. Each one of
these signals is then mixed with carrier waves that are also 90° out of
phase with each other. By either adding or subtracting the resulting
signals, a lower or upper sideband signal results.
..."
Det er vistnok denne metode YU1LM anvender:
http://en.wikipedia.org/wiki/Single-sideband_modulation#Weaver_modulator
Citat: "...
In Weaver's method, the band of interest is first translated to be
centered at zero, conceptually by modulating a complex exponential
exp(j?t) with frequency in the middle of the voiceband, but implemented
by a quadrature pair of sine and cosine modulators at that frequency
(e.g. 2 kHz). This complex signal or pair of real signals is then
lowpass filtered to remove the undesired sideband that is not centered
at zero. Then, the single-sideband complex signal centered at zero is
upconverted to a real signal, by another pair of quadrature mixers, to
the desired center frequency.
..."
ZERO-IF AND NEAR-ZERO-IF QUADRATURE RECEIVERS FOR SDR:
http://www.sdrforum.org/pages/sdr02/HW3-01%20Gu.pdf
Citat: "...
Zero Intermediate Frequency (ZIF) and Near Zero
Intermediate frequency (NZIF) quadrature receivers are
more sensitive to circuitry mismatch, which causes I-Q
imbalance that may be frequency dependent over the
signal bandwidth.
..."
I Softrock anvendes 74HC4052 og andre CMOS baserede digitalt styrede
kontakter som I/Q-mikser:
SM 5 BSZ - I/Q mixer for direct conversion radio
(Sept 28 2001):
http://www.sm5bsz.com/linuxdsp/iqmixer.htm
Citat: "...
The simple HCMOS mixer in fig 1. produces a second order spur at -50dB
when the level is adjusted for a standard low noise op-amp to degrade
the dynamic range by less than 3dB.
...
Fig 1. A quadrature nixer [mixer] using 74HC4052. The control inputs are
fed from a synchronous counter that divides a local oscillator by four.
As a result the switch loops through all four positions during a period
of 4 local oscillator cycles, see fig. 2. For each switch position only
one connection is made between the antenna and either output. This way
the make before break operation of the switch will not cause
shortcircuits across the coil as would be the case using 74HC4053 as in
an older design. The dynamic range of the 74HC4052 design is superior
to that of the 74HC4053 design.
..."
-
Ældre:
RX-350 HF DSP RECEIVER (der findes en bedre udgave idag med DRM (Digital
Radio Mondiale) MF-udgang):
http://www.tentec.com/rx350.htm
"...
The built-in 34 bandwidth filters from 300 Hz to 8 kHz are instantly
selectable by turning a knob. All filters are independent of mode -
use any available filter in any receive mode.
...
Momentary 'SWEEP' function shows band activity in 8 selectable
coverage rates. Find the signals without even being on frequency!
Simply tune to a desired frequency, select one of 8 SWEEP ranges, and
press the SWEEP button. Signals will be shown on the bar graph on
opposite sides of the starting frequency. A cursor will appear and
allow you to tune RX-350 to any signal visible on the screen. Easy!
...
RX-350 HF DSP Receiver $1199.00
...
SPECTRUM SWEEP DISPLAY 8 widths from 240 Hz to 2.4 MHz, with tuning
cursor and selectable Autosweep function.
..."
-
Her er en fiks og færdig SDR/DSP baseret HF-transceiver:
Ten-Tec is pleased to announce the successor to the original ORION
transceiver: ORION II:
http://radio.tentec.com/Amateur/Transceivers/TT565
Pris - sølle 3995$...av. Og så kan man ikke engang se SSTV, fjernsyn
eller Doom II på farveskærmen. Det er simpelthen anakronistisk at de har
sat et antikt drejespoleinstrument på forsiden hvor farveskærmen også er...
Opgradering? = ny firmware!
-
Det flyder også med selv-byg SDR:
SoftRock-40:
http://groups.yahoo.com/group/softrock40/
Citat: "...
The SoftRock-40 is a small, low-cost, good performing 40-meter "software
defined radio" receiver that plugs into a computer USB port and delivers
I-Q audio signals to the computer's sound card. It was designed by Tony
Parks, KB9YIG and Bill Tracey, KD5TFD as an "SDR sampler project" for
hams everywhere to easily try out software defined radio.
..."
og deriviater:
8. November 2008 Informationen zum SoftRock RXTXv6.3 XTALL:
http://softrock.raisdorf.org/RXTXv6-3.html
http://www.sdr-kits.net/
http://www.amqrp.org/kits/softrock40/
PowerSDRv1.12.0 SoftRock RxTx Si570 Setup.msi:
http://code.google.com/p/powersdr-iq/downloads/detail?name=PowerSDRv1.12.0%20SoftRock%20RxTx%20Si570%20Setup.msi&can=2&q=
http://powersdr-softrock-rxtx-si570.software.informer.com/
PowerSDR Software For Software Defined Radio I.F. Stage Use
http://www.wu2x.com/sdr.html
http://www.nonstopsystems.com/radio/frank_radio_sdr.htm
http://www.nonstopsystems.com/radio/
http://www.hamsdr.com/WA2DFI/Hands_On_SDR_%20Dayton_2008_v0_9.ppt
http://qrpradio.org/pub/softrocks/manuals/softrock%20v6.1%20rxtx/
Euro SOFTROCK-RXTX ?87:
http://www.wsplc.com/acatalog/SOFTROCK-RXTX.html
Essex:
http://www.wsplc.com/contactus.php
http://www.wsplc.com/acatalog/Kits_-_Softrock.html
http://www.m0kgk.co.uk/sdr/softrocks.php
http://wb5rvz.com/sdr/RXTX_V6_3/
Softrock RxTx:
http://www.softrockradio.org/node/171
SoftRock V7.0:
http://www.softrockradio.org/node/31
http://www.qrpradio.org/pub/softrocks/manuals/softrock%20V7/
http://www.qrpradio.org/pub/softrocks/manuals/
A small, low-cost "Software Defined Radio" receiver kit for 40-meters,
used with powerful software on the PC for multi-mode operation:
http://www.amqrp.org/kits/softrock40/
-
For radioamatører (ældre):
W7PUA DSP-10 2 Meter.
[SDR] Software Defined Transceiver.
Surface-Mount Kit:
http://www.tapr.org/tapr/html/Fdsp10.html
The DSP-10 is an amateur-radio, software-defined 2-meter transceiver
that can be built at home. It operates on SSB, FM and CW modes.
Features are tailored to operation with weak signals on VHF, UHF and
Microwave frequencies.
DSP-10 All-Mode 2m:
http://www.proaxis.com/~boblark/dsp10.htm
DSP-10 Weak-Signal Update.
2-Meter EME [Earth-Moon-Earth] QSO with Single Yagis and 150 Watts:
http://www.proaxis.com/~boblark/wksig1.htm
W7PUA DSP-10 2 Meter
Software Defined Transceiver
Surface-Mount Kit
http://www.tapr.org/tapr/html/Fdsp10.html
-
We're creating an open source Software Defined Radio. We're designing
the s/w and h/w to enable experimentation with the latest digital
wireless protocols:
http://sourceforge.net/projects/opensdr/
http://opensdr.sourceforge.net/
http://sourceforge.net/projects/opensdr/
http://prdownloads.sourceforge.net/opensdr/
-
http://gnuradio.org/
http://www.gnu.org/software/gnuradio/
http://mail.gnu.org/mailman/listinfo/discuss-gnuradio
-
RadioRaft 3.21
Multimode Radio Data Decoder Software for decoding
12 ARQ modes, 10 FEC modes, 3 packet modes and many others ...
http://radioraft.pagespro-orange.fr/
-
openQRP:
http://openqrp.org/
Software Defined Radio:
http://sdr-radio.com/
SDR forum 2.0:
http://www.wirelessinnovation.org/
Software Defined Radio "Blueberry SDR":
http://www.andreadrian.de/sdr/index.html
Building and Using the WB6DHW
http://wb6dhw.com/AD995x%20Manual.pdf
http://www.hamsdr.com/dnld.aspx
http://www.hamsdr.com/dnld.aspx?id10%37
This software can demodulate DRM, AM, FM, SSB, CW from 12 kHz IF signal:
http://drm.sourceforge.net/
http://www.n9vv.com/hamradio.html
issue 365, May 2007, Elektor: Software Defined Radio With USB interface:
http://www.elektor.com/magazines/2007/may/software-defined-radio.91527.lynkx
http://www.arrl.org/software-defined-radio
A Software Defined Radio for the Masses, Part 4:
http://www.arrl.org/tis/info/pdf/030304qex020.pdf
DIGITAL IF: The VITA (49) Radio Transport (VRT)
Providing Interoperability for Software Defined Radios:
http://web.archive.org/web/20110629072525/www.digitalif.org/
http://www.digitalif.org/
jansky eme:
http://www.nitehawk.com/rasmit/
http://www.nitehawk.com/rasmit/dsp50.html
http://www.physics.princeton.edu/pulsar/K1JT/
http://www.dxzone.com/tag-weak-signal/
http://sharon.esrac.ele.tue.nl/mirrors/zl1bpu/MFSK/INDEX.html
MFSK means Multi - Frequency Shift Keying
http://xoomer.virgilio.it/aporcino/Stream/index.htm
http://xoomer.virgilio.it/aporcino/
http://www.sm5bsz.com/
http://microtelecom.it/perseus/
849,00 ?
http://www.ssb.de/product_info.php?info=p1390_Perseus-SDR-Kurzwellenempfaenger-10-kHz---40MHz.html
http://www.sdrham.com/winrad/
VIP Perseus hovedside:
http://openhpsdr.org/
http://tapr.org/
$1100
http://www.hpsdr.eu/
http://openhpsdr.org/wiki/index.php?title=Main_Page
http://openhpsdr.org/wiki/index.php?title=MERCURY
Penelope:
http://cgi.ebay.de/ws/eBayISAPI.dll?ViewItem&item27%0519945097
http://openhpsdr.org/wiki/index.php?title=A_complete_HPSDR_transceiver
http://lists.openhpsdr.org/pipermail/hpsdr-openhpsdr.org/
Mail-lister:
http://openhpsdr.org/reflector.html
-
http://www.flex-radio.com/
http://www.flex-radio.com/Products.aspx?topic=powersdr1x
http://uwsdr.berlios.de/
http://www.flex-radio.com/
Citat: "...
Additionally, all A/D conversions are performed internally in the
FLEX-5000 so a sound card is not required. There are two additional
versions of the FLEX-5000 (models C and D) that provide higher levels of
integration.
...
The FLEX-5000C? model has a built in Intel Core2 Duo processor and comes
with the Microsoft Windows XP operating system, wireless keyboard and
mouse. The FLEX-5000D? includes everything above and adds a 9" LCD
display with touch screen, 300 Watt PA and a large tuning knob.
..."
The FlexRadio FLEX-5000A?
High Performance Software Defined Radio at its Best!
http://www.flex-radio.com/Products.aspx?topicF5%Ka_details
Citat: "...
Top Performing Narrow-Spaced Two-Tone 3rd Order IMD Dynamic Range at 2
KHz - (Not 20 KHz Like Everyone Else Advertises). An Incredible 105 dB
on 14 MHz.
...
Industry Leading Narrow Spaced 3rd Order Intercept Point: +33 dBm at 2
KHz Tone Spacing.
...
No Sound Card Required!
No longer do you have to worry about interfacing a sound card to your
PC. The FLEX-5000 has integrated the A/D and D/A processing hardware
built inside the radio. A high quality 192 KHz 24-bit DACs with
exceptional performance numbers provides the spectral samples for the
DSP to process. The integrated converters also eliminate audio cabling
requirements between the transceiver and PC.
...
True Full Duplex Operation for Simultaneous Transmit and Receive
...
True Diversity Receiving with the Second Independent Receiver
...
By locking both receivers to the same frequency you can produce "stereo
diversity" which allows your brain to more easily sort the signal from
the noise.
...
Single 1394 FireWire Connection to your Computer
...
Transverter Ready - Full Duplex 28 MHz IF
The FLEX-5000's incredible receiver is perfect for weak signal VHF+ and
WSJT operation as a 28 MHz IF for interfacing to external transverters.
The FLEX-5000 will turn your VHF-UHF-microwave setup into the highest
performance station around. Full duplex operation opens the door for
satellite communications as well.
...
No External Calibration Equipment Required
..."
FLEX-5000 Block Diagram
This PDF file is the block diagram of the FLEX-5000 full duplex /triplex
architecture:
http://support.flex-radio.com/Downloads.aspx?id15%2
Fundet via:
http://support.flex-radio.com/Downloads.aspx
-
MAX2023
High-Dynamic-Range, Direct Up-/Downconversion 1500MHz to 2300MHz
Quadrature Mod/Demod.
Highest Linearity, Lowest Noise 1.5GHz to 2.3GHz ZIF
Modulator/Demodulator Enables Zero-IF Direct-Conversion Architectures
for DCS/PCS EDGE BTS Transmitters:
http://www.maxim-ic.com/quick_view2.cfm/qv_pk/5141
/Glenn

Re: Software defined radio

Jeg lytter til audio i hovedtelefon gennem en FM transmitter i audio
stikket på min Macbook når jeg ser TV (over LAN fra en Elgato EyeTV
Netstream DTT):
<http://www.proshop.dk/MP3-afspiller-og-tilbehoer/Belkin-TuneCast-II-Mob
ileFM-Transmitter-2145851.html>
FM signalet modtages med en ældre (analog) Sony FM Walkman:
<http://users.cybercity.dk/~dsl487543/FMwalkman.jpg
Fin lydstyrke. Jeg er nød til at skrue ned selvom jeg har dårlig
hørelse.
Jeg har så anskaffet en Ennovia DAB+/FM Bærbar Radio modtager, model
EN-DAB51
<http://users.cybercity.dk/~dsl487543/EN-DAB51.jpg
Det er vel nok en SDR? Medens lydstyrken på DAB/DAB+ er fin når det er
radio, så er lydstyrken på FM radio (analog) meget dårlig/lav.
Er det mon fordi en SDR ikke "oversætter" det analoge signal godt nok?
Findes der så en (digital?) transmitter, der vil virke bedre med DAB+/FM
modtageren end min nuværende (Belkin) FM transmitter?
--
Ikke ham på Facebook.
Ikke ham på Facebook.

Re: Software defined radio [ kvalitet ]
On 01/01/13 08.55, Axel Hammerschmidt wrote:
...

Den specifikke SDR - nok ja. Især hvis A/D-konvereteren ikke omsætter
til nok bits - og den digitale signalbehandling ikke foregår med nok
bits og dermed laver grovere afrundninger.
Generelt om SDR - nok nej. Men SDR er selvfølgelig ikke garanti for god
lydkvalitet.

Mon der er andre der kan svare på det?
/Glenn
...

Den specifikke SDR - nok ja. Især hvis A/D-konvereteren ikke omsætter
til nok bits - og den digitale signalbehandling ikke foregår med nok
bits og dermed laver grovere afrundninger.
Generelt om SDR - nok nej. Men SDR er selvfølgelig ikke garanti for god
lydkvalitet.

Mon der er andre der kan svare på det?
/Glenn

Re: Software defined radio [ FM-demodulation ]
On 01/01/13 13.13, Glenn wrote:

...
Hej Axel
Mere om emnet:
Is it difficult to do FM demodulation digitally?:
http://www.dsprelated.com/showmessage/142012/1.php
Citat: "...
However, if one looks at many reports of the FlexRadio software
defined radio, it is clear that FlexRadio have never succeeded in
getting a decent FM demodulator. The performance of those never seems
to live up to the hype.
...
But to add a DSP and A/D just for demodulation is pricey compared a
simple analog pll demodulator.
..."
Better FM demodulator:
http://www.dsprelated.com/showmessage/50153/1.php
Citat: "...
You will not outdo a standard analogue PLL with low phase noise in the
VCO in a hurry.Why go digital when there is a perfectly cheap analogue
solution?
..."
Grov sammenligning:
Generelt bruger SDR mere strøm end analoge AM og FM radioer.
/Glenn

...
Hej Axel
Mere om emnet:
Is it difficult to do FM demodulation digitally?:
http://www.dsprelated.com/showmessage/142012/1.php
Citat: "...
However, if one looks at many reports of the FlexRadio software
defined radio, it is clear that FlexRadio have never succeeded in
getting a decent FM demodulator. The performance of those never seems
to live up to the hype.
...
But to add a DSP and A/D just for demodulation is pricey compared a
simple analog pll demodulator.
..."
Better FM demodulator:
http://www.dsprelated.com/showmessage/50153/1.php
Citat: "...
You will not outdo a standard analogue PLL with low phase noise in the
VCO in a hurry.Why go digital when there is a perfectly cheap analogue
solution?
..."
Grov sammenligning:
Generelt bruger SDR mere strøm end analoge AM og FM radioer.
/Glenn

Re: Software defined radio [ FM-demodulation ]
<snip>
Tak.

I "manualen" til DAB+/FM radioen - der har indbygget batteri, der
oplades gennem et USB kabel - oplyses 22 timer for FM og 8 timer for
DAB+ med note om, at de 8 timer DAB+ kan variere med signalstyrken.
Men ikke denne variation ved FM?
--
Ikke ham på Facebook.
Ikke ham på Facebook.

Re: Software defined radio
(Svar sendes til news://dk.teknik.elektronik )
On 03/01/13 23.50, Martin Larsen wrote:

Hej Martin
Her er en god SDR-omtale mere (YU1LM):
HF DC (direct conversion) receivers:
http://yu1lm.qrpradio.com/dc%20rx%20yu1lm.htm
Renaissance of HF DC (Direct Conversion) receivers Part1 (engelsk):
http://yu1lm.qrpradio.com/Renaissance%20of%20HF%20DC%20RX%20YU1LM.pdf
HF SDR (Software Defined Radio) receivers:
http://yu1lm.qrpradio.com/sdr%20rx%20yu1lm.htm
/Glenn
On 03/01/13 23.50, Martin Larsen wrote:

Hej Martin
Her er en god SDR-omtale mere (YU1LM):
HF DC (direct conversion) receivers:
http://yu1lm.qrpradio.com/dc%20rx%20yu1lm.htm
Renaissance of HF DC (Direct Conversion) receivers Part1 (engelsk):
http://yu1lm.qrpradio.com/Renaissance%20of%20HF%20DC%20RX%20YU1LM.pdf
HF SDR (Software Defined Radio) receivers:
http://yu1lm.qrpradio.com/sdr%20rx%20yu1lm.htm
/Glenn

Re: Software defined radio [ Jeri Ellsworth SDR eksperimenter ]
On 27/12/12 23.18, Martin Larsen wrote:

Hej Martin
Kig også på:
Den eneste kvindelige elektronik-geek jeg er stødt på og som accepterer
et rodet skrivebord og hjemmelavede antenner. ;-) Og hun ved hvad hun
snakker om og er rimelig pædagogisk:
Software Defined Radio VLOG Part 1:
http://www.youtube.com/watch?v=YFVgq3ZB0Mo
(Her præsenteres også et ægte gitterdykmeter med elektronrør:)
Software Defined Radio Vlog - Part 2:
http://www.youtube.com/watch?v=nTj_KvBuRmg
Software Defined Radio Vlog - Part 3:
http://www.youtube.com/watch?v=xVNgGJ7kcYs
Software Defined Radio Vlog Part 4 - Frequency Scanning:
http://www.youtube.com/watch?v=juyTihVP9sU
Software Defined Radio Vlog Part 5 - Baseband Capture and Audio Out:
http://www.youtube.com/watch?v=GRWVWD85tFQ
Software Defined Radio Vlog Part 6 - VGA and 256 Point FFT:
http://www.youtube.com/watch?v=Gdzenh3Fy-c
Software Defined Radio Vlog Part 7 - AM Demodulation and Floating Point:
http://www.youtube.com/watch?v50%tjWLiAkKw
-
Jeri Ellsworth:
http://en.wikipedia.org/wiki/Jeri_Ellsworth
Jeri Ellsworth youtube:
http://www.youtube.com/user/jeriellsworth
F.eks. lav dine egne transistorer:
Semiconductor:
http://www.youtube.com/playlist?list=PL5DCEA197C1C07A2D
Homebrew NMOS Transistor Step by Step - So Easy Even Jeri Can Do It:
http://www.youtube.com/watch?v=w_znRopGtbE
Make a Point Contact Transistor at home:
http://www.youtube.com/watch?v=vmotkjMSKnI
OA81 og OA90 kan f.eks. også anvendes.
-
Sep 01, 2004, Listening to FM Radio in Software, Step by Step:
http://www.linuxjournal.com/article/7505
/Glenn

Hej Martin
Kig også på:
Den eneste kvindelige elektronik-geek jeg er stødt på og som accepterer
et rodet skrivebord og hjemmelavede antenner. ;-) Og hun ved hvad hun
snakker om og er rimelig pædagogisk:
Software Defined Radio VLOG Part 1:
http://www.youtube.com/watch?v=YFVgq3ZB0Mo
(Her præsenteres også et ægte gitterdykmeter med elektronrør:)
Software Defined Radio Vlog - Part 2:
http://www.youtube.com/watch?v=nTj_KvBuRmg
Software Defined Radio Vlog - Part 3:
http://www.youtube.com/watch?v=xVNgGJ7kcYs
Software Defined Radio Vlog Part 4 - Frequency Scanning:
http://www.youtube.com/watch?v=juyTihVP9sU
Software Defined Radio Vlog Part 5 - Baseband Capture and Audio Out:
http://www.youtube.com/watch?v=GRWVWD85tFQ
Software Defined Radio Vlog Part 6 - VGA and 256 Point FFT:
http://www.youtube.com/watch?v=Gdzenh3Fy-c
Software Defined Radio Vlog Part 7 - AM Demodulation and Floating Point:
http://www.youtube.com/watch?v50%tjWLiAkKw
-
Jeri Ellsworth:
http://en.wikipedia.org/wiki/Jeri_Ellsworth
Jeri Ellsworth youtube:
http://www.youtube.com/user/jeriellsworth
F.eks. lav dine egne transistorer:
Semiconductor:
http://www.youtube.com/playlist?list=PL5DCEA197C1C07A2D
Homebrew NMOS Transistor Step by Step - So Easy Even Jeri Can Do It:
http://www.youtube.com/watch?v=w_znRopGtbE
Make a Point Contact Transistor at home:
http://www.youtube.com/watch?v=vmotkjMSKnI
OA81 og OA90 kan f.eks. også anvendes.
-
Sep 01, 2004, Listening to FM Radio in Software, Step by Step:
http://www.linuxjournal.com/article/7505
/Glenn
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