The FlexRadio SDR-1000™
SDR-1000™ Radio (Click image to enlarge)
The SDR-1000™ Software Defined Radio
(SDR) is a radio whose modulation waveforms are completely defined in software.
Traditional analog radios are fixed in capability for all time. Since all of
their functionality is hard wired into the radio, there is little ability to
upgrade. Many modern radios add proprietary digital signal processing (DSP)
chips to traditional analog radio architectures to provide signal-processing
functions with limited or no capability of upgrade.
The FlexRadio SDR-1000™ is the first open source software,
amateur radio transceiver to incorporate the scalable DSP performance of a
personal computer (PC) and sound card to perform all modulation, demodulation,
and control functions of the radio. The general purpose PC architecture now
vastly outperforms even the best proprietary DSP chips, with cost/performance
constantly improving. In addition, the professional audio market is driving
significant improvements in sound card technology. The SDR-1000™ takes advantage
of these trends to provide upgradeable hardware and software performance.
Steve Ford, Editor, writes in April 2005 issue of QST,
“The debut of
the FlexRadio SDR-1000™ opens a new chapter in the history of Amateur
Radio. I’m not indulging in hyperbole by making such a statement – it
is a fact. For the first time in ham history, you can purchase ‘off the
shelf’ an HF and 6 meter transceiver that uses software to define its
functionality – a software defined radio.”
|Receiver Frequency Range
||12KHz-60MHz (Requires external
user supplied pre selector for best operation below 160M)
|Transmitter Frequency Range
||160M-6M Bands (2M transverter IF
|IP3 - Third Order Intercept (2KHz
Tone Spacing, 14.0MHz, 500Hz BW, Medium Preamp Gain, Delta 44 sound
|Two Tone, Third Order Dynamic
Range (2KHz Tone Spacing, 14.0MHz, 500Hz BW, Medium Preamp Gain,
Delta 44 sound card)
|MDS (14.2MHz, 500Hz BW, Delta 44
||-130 dBm High Preamp,
|Minimum Tuning Step
|Direct Digital Synthesizer (DDS)
||200Mhz, <1ps RMS jitter
|Max. Receive Bandwidth
||48kHz (Limited by sound card)
||1 W or 100W HF versions 160-10m with optional amp
(40W continuous carrier), 500mW 6m.
Note: 1W models may be upgraded at a later date with the
optional SDR-100WPA module.
||PC Parallel Port (DB-25
connector) or optional USB to Parallel adapter
|Rear Panel Control Outputs
||15-pin "D" connector for
external amplifier and
band control relays
||PTT foot switch, Code Key,
|Sound Card Interface
||Line In, Line Out, Speaker Out,
||10" W x 9.5" D x 4.5" H (24.1cm x
25.4cm x 11.4cm)
|Power Supply Requirement
||13.8VDC @ 1.25A (Max)
for 1W version. 25A (Max) with
optional 100W PA
Supported PC Configurations
Windows 2000 or Windows XP, User
developed Linux version available
Recommended Sound Cards (See
Important Note Below)
PCI: M-Audio Delta 44
Firewire (1394a): Edirol FA-66
How to select the right sound card?
operation of the SDR-1000™ depends on the use of a sound card that is
officially supported by FlexRadio Systems. Refer to the Supported PC
Configurations above to determine which sound cards are currently
supported. Use only the specific model numbers stated on the website
because other models within the same family may not work properly with the
radio. Officially supported sound cards may be updated on the website
without notice. If you have any question about the sound card you would
like to use with the radio, please email
email@example.com or call us at 512-250-8595.
WARRANTY IS IMPLIED WHEN THE SDR-1000 IS USED WITH ANY SOUND CARD OTHER
THAN THOSE CURRENTLY SUPPORTED AS STATED ON THE FLEXRADIO SYSTEMS
WEBSITE. UNSUPPORTED SOUND CARDS MAY OR MAY NOT WORK WITH THE SDR-1000.
USE OF UNSUPPORTED SOUND CARDS IS AT THE CUSTOMERS OWN RISK.
The SDR-1000 comes with PowerSDRTM software that
performs all DSP and control functions for the radio. The software is provided
open source under the GNU General Public License (GPL). This means that
customers have the ability to improve performance and add functionality to the
radio with redistribution rights defined under GPL. Further, FlexRadio Systems
provides a constant stream of enhancements that incorporate both internal and
customer supplied code. Customers simply download and install free
software updates from the FlexRadio website.
"Used SDR-1000s do not
exist. The radio becomes brand new each time you download the latest program
release.” Willi, SM6OMH
Select the PowerSDR menu option above under Products for additional information about the SDR-1000's software.
Narrow Spaced Dynamic Range
two-tone, third order dynamic range and +26dBm IP3
at 2 KHz spacing
(14 MHz, 500 Hz bandwidth, Medium Preamp Setting, M-Audio Delta 44 sound
card) make the SDR-1000™ the best performing narrow-spaced radio on the amateur
radio market today. Closely spaced two-tone
dynamic range, combined with extremely low local oscillator phase
noise is the primary factor that determines the performance of
modern receivers. The SDR-1000™ incorporates a
novel Quadrature Sampling Detector (QSD) that offers significantly higher
dynamic range than traditional mixers. Further, by using a single conversion
from RF to audio frequencies, other sources of nonlinearity are eliminated as
compared to multi-conversion receivers. The SDR-1000™ also uses a very low
phase noise oscillator and direct digital synthesizer (DDS) to minimize
reciprocal mixing with large adjacent signals. This means that you can work
the weak signals in the presence of nearby strong signals.
Real Time High Resolution Spectrum Display with Click Tuning and "Drag and Set" Filter Settings.
(Click screenshot image to enlarge)
The Real-Time Panadapter
spectrum display allows you to view signals up and down the band at up
to 50 frames per second with ~10Hz resolution. When calibrated
with an accurate signal generator, the spectrum display and associated
dBm power meter provide signal location and measurement capabilities
comparable to expensive lab test equipment. Phase, Waterfall, and
Histogram display modes are also provided.
Click on the Spectrum Display
to Tune instantly to any visible signal. Click tuning works in
all modes and works especially well for centering the desired signal in
the selected filter’s passband.
Drag and Set Filter Settings
allows to to "grab" the receive filter edges with your mouse and
dynamically create any filter you want with any offset when using the
Panadapter display - as narrow or wide as you want in any mode.
Contesting and DX chasing become a snap when you can see the signal, click to tune,
make the contact, and move off to the next one. For VHF and up,
the same features let you find off-frequency signals in seconds and
work them with ease.
No Ring Filters and No Pump AGC
tap DSP Filters Provide a 1.35:1 Shape Factor
for a 500 Hz filter and 1.06:1 for a 2.6 KHz filter (3dB to 60dB
BW). Strong signals simply disappear within a few Hertz of the
filter cutoff frequency. The radio’s unparalleled selectivity lets
you enjoy the bands with much less interference from adjacent
stations. The filter size can be set by the user from 256 to 2048
taps to allow the tradeoff between filter shape factor vs. latency
(time delay through the filter). Ten standard filter bandwidth
buttons plus two custom filters with variable high and low cutoff
No-ring Filters Down to 25 Hz Bandwidth
Aallow You to Pull in Extremely Weak Signals Even Among Strong Adjacent Stations. The narrow filters make on the air CW signals sound
amazingly like a code practice oscillator.
digital AGC is Performed After the Brick Wall Filter to eliminate
compression or "pumping" of weak desired signals by strong adjacent signals.
The AGC threshold may be set by the user to allow quiet operation under
varying band conditions.
Single Control Variable Bandwidth Filter Along with
IF Shift with Auto Center allows rapid customization of the filter to
eliminate QRM. The variable bandwidth control directly programs one of the
custom filter buttons for easy recall.
Noise Subtraction and DSP Noise Reduction
DSP Impulse Noise Subtraction Virtually Eliminates Distortion caused by
traditional noise blankers by digitally replacing noise pulses with an
estimate of the real signal. Multi-tone automatic notch filter and DSP noise
reduction are also provided to further improve the listening experience.
Equalizer, Compander, Pre Filter Compression, and Variable Bandwidth Filter
3-Band Graphic Transmit and Receive Equalizer and Continuously Variable Bandwidth Transmit Filter allow you to customize your signal for band conditions,
operating style, and mode. All compression and ALC processing occurs before
the final brick wall transmit filter
eliminate splatter. For maximum talk
power, either a feed-forward compressor and a compander may be selected from
Built-in Iambic, Keyboard and Memory Keyer
The built in CW keyer
break-in modes for iambic A & B, non-iambic, keyboard, and memory operation at
up to 50 WPM. World-class narrow-spaced IMD performance and brick wall
filters, no ring filters down to 25Hz bandwidth make this transceiver a joy to
use on CW.
CAT Control &
Virtual COM Ports Allow Integration of Logging and Digital Mode
Virtual COMM Port Software Allows Almost Any Logging
or Digital Mode Software to be Used on the Same PC Without Cables. This eliminates
external CAT control wiring by creating a software connection between PowerSDR™
and other amateur radio applications. PowerSDR™ software emulates the Kenwood
CAT command set in its basic compatibility mode, which means that most amateur
radio applications run right away. An extended command set is also available
that allows software vendors to take advantage of the advanced features of the
SDR-1000™. MixW, Ham Radio Deluxe, and WriteLog are just a few of the
applications known to work with the SDR-1000™.
Playback 96kHz of Real-Time Spectrum
Now you can go back in time using the wave recording and
playback features of the PowerSDR™ software. All of the signals within the
bandwidth of your sound card can be recorded to the hard
disk to be played back at any time.
You can tune in any station
within the full 96kHz of recorded signals. This is handy for
recording beacons, contests, important DX contests, and radio demos.
Add the Optional
Automatic Tuning Unit and 2 Meter Transverter
is an optional integrated wide-range switched-L tuning network for
the SDR-1000. Based on an OEM version of the LDG Z-100, it
provides fully automatic antenna tuning across the entire HF range. It will
tune dipoles, verticals, Yagis or virtually any coax fed antenna over a wide
impedance range. Features include: automatic matching of antennas from 6-800
Ohms (10:1 SWR), 200 memories for instant return to previously tuned
frequencies, continuous coverage from 1.8 to 54 MHz and PowerSDR control of
Bypass, Full Tune, and Memory Tune.
The DEMI144-28FRS is an optional integrated 2m
transverter. Designed as a 2m IF for microwave transverters, it provides high
dynamic range operation from 144-146 MHz. It provides 0dB gain and +17dBm LO
drive on receive with a 3.5dB NF so that it can easily handle the output from
other transverters. Power output is 50-100mW on transmit and can be reduced
by the front panel power control.
You have 2 baseline options when purchasing an
Note: Includes parallel control cable. Recommended
Delta 44 sound card and PC bundles can be ordered below.
- 100 Watt Software Defined
Transceiver - Fully Assembled/Tested
- 1 Watt Software Defined
Transceiver - Fully Assembled/Tested
now offers a complete system in which the SDR-1000™ is bundled with a Dell personal computer and
high performance sound card. The PC comes
with the sound card installed, software loaded, and ready to operate.
These Pentium 4 systems are available with optional flat panel
monitors up to 19 inches. The PCs are backed by Dell's warranty and support
services. Call us for details.
FlexRadio Systems Terms and
Conditions of Sale
The SDR-1000™ requires the use of an officially supported sound card
and PC configuration. Please refer to the supported PC configurations
on the website before ordering. (2) SDR-1000 includes Amateur Radio
band transmit capability, which requires a valid amateur radio
license; therefore you must provide your Amateur Radio for all models
with transmission capability. (3) Product may be returned for full
credit within 30 days from shipment if it is returned in new condition
and in the original packing materials.
FlexRadio Systems 1-Year Limited
WarrantyThis warranty is effective as of the date of first purchase by the
consumer. Before requesting warranty service, you should complete a
careful review of the most recent version of the Troubleshooting
Section of the Operating Manual on the customer download site. What is
covered: During the first year after date of purchase, FlexRadio will
replace defective parts free of charge (post-paid). We will also
correct any failure caused by defective parts and materials. You must
send the unit at your expense to FlexRadio™ (see above). FlexRadio will
pay return shipping. What is not covered: This warranty does not cover
correction of assembly errors or misalignment; repair of damage caused
by misuse, negligence, or builder modifications; or any performance
malfunctions involving non-FlexRadio accessory equipment. The use of
acid-core solder, water-soluble flux solder, or any corrosive or
conductive flux or solvent will void this warranty in its entirety.
Also not covered is reimbursement for loss of use, inconvenience,
customer assembly or alignment time, or cost of unauthorized service.
Limitation of incidental or consequential damages: This warranty does
not extend to non-FlexRadio equipment or components used in
conjunction with our products. Any such repair or replacement is the
responsibility of the customer. FlexRadio will not be liable for any
special, indirect, incidental or consequential damages, including but
not limited to any loss of business or profits. Proper operation of
the SDR-1000™ depends on the use of a sound card that is officially
supported by FlexRadio Systems. Refer to the Supported PC
Configurations on the FlexRadio Systems website to determine which
sound cards are currently supported. Use only the specific model
numbers stated on the website because other models within the same
family may not work properly with the radio. Officially supported
sound cards may be updated on the website without notice.
IS IMPLIED WHEN THE SDR-1000 IS USED WITH ANY SOUND CARD OTHER THAN
THOSE CURRENTLY SUPPORTED AS STATED ON THE FLEXRADIO SYSTEMS WEBSITE.
UNSUPPORTED SOUND CARDS MAY OR MAY NOT WORK WITH THE SDR-1000. USE OF
UNSUPPORTED SOUND CARDS IS AT THE CUSTOMERS OWN RISK.