Software defined Radio (SDR) Version of MRP40
Morse Decoder (for I-Q
Tuning is straight and easy: Just click into the waterfall,-
keep mouse button down and drag.
MRP40-SDR works with external SDR transceiver hardware that
provides IQ-input signal like Softrock, KX3 or
This program consists of the well known MRP40v64
plus a tuning front end for incoming I-Q Signals
MRP40-SDR also can transmit morse signals via I-Q output.
SSB voice demodulation included as well.
Sampling Rates: 48, 96, and 192 KHz (16 or 32 Bit)
Download and try the full functional 30 day trial of MRP40-SDR
For those who do not have SDR transceiver
frond end hardware with IQ signal output, I recommend the usage
of normal MRP40
Download and try the full
functional 30 day trial of normal MRP40
Any version normal price: € 49,90 Euro (to look up
the price in other currency go to currency
Update from MRP40 to MRP40-SDR price: € 25,00 Euro
To register send the amount via PlayPal
to email@example.com (in GERMANY)
Please include the MRP40 Registration Number in
your PayPal transaction or a separate email,
I will reply key in less than 48 hours.
Initially you need to care for the sound card settings (click
Options- show- sound card)
See Screen shot above:
With the horizontal scroll bar on the main Window you
adjust the color contrast of both graphic displays at the same
time. The output audio volume is coupled to that as well.
For fine tuning you do a right button mouse click to any position
in the upper waterfall,- keep mouse button down and drag.
(Tuning is refined 1:50) => 1Hz accuracy!
In the middle of
the axis of spectra display you can edit the green number
"0". Just set it to the actual Quartz or VFO Frequency
(in KHz) of your hardware frond end. This way the frequency scale shows actual
In the Frequency settings box you choose SSB or CW Bandwidth and
adjust it with the vertical slider to your needs
The "CW Center option" allows you to adjust the audio out to your
personally preferred CW Audio tone frequency level (Vertical
The general rule for the MRP40 graphic is: "what you see is
what your hear"
I cared a lot for keeping the CPU load low,- so i think this
program can run on any general purpose PC, Laptop or Netbook.
The sound card sample setting to 32 Bit will require Win7
The 32Bit setting is supposed to provide higher dynamic range when
a true 24 Bit sound card is installed.
If you have a 16 bit sound card installed then use the 16 Bit
Enjoy exploring ;-))
Your Questions and comments are welcome to firstname.lastname@example.org