![]() ![]() HDSDR would then just be used for frequency control - not necessarily for demodulation. if a digimode program can process I/Q, then there is no need for VAC. This removes the necessity for VAC.Īs an example the FCDpro+ has a built-in 192 kHz soundcard delivering I/Q. Some digimode programs can directly process received signal in parallel to HDSDR. When using HDSDR with such a digimode program, you will need to use FM, usually with a bandwith of 12 - 15 kHz depending on the digimode. These modes require a discriminator tap, because a soundcard will filter DC. Paging decoder like PDW ( ) for modes POGSAG and FLEXĭigital Speech Decoder ( ) for modes P25, DMR/MOTOTRBO,Īll FSK (like RTTY) may be sent and decoded this way.įor analog setups, not all modes are suitable for just connecting the receiver's discriminator output ( ) to the soundcard's LineIn. FM mode is the equivalent of a discriminator output On VHF Examples: On VHF and UHF FM mode is used for some digimodes. > but also some more non referened ones like MixW, MultiPSK. > Orbitron, WXtrack, JT65-HF, WSPR-X, PDW Sort in the other programs, which are referenced: HRD, If you want to use this feature you probably know more about it than I! īelow:- Incomplete snips, maybe will be incorporated later. Signal Measurements:- Using HDSDR for signal measurements, the S meter and Spectral Display.Īutocorrelation (and Cepstrum), new features November 2013. It is divided into 126 contiguous time intervals, each of length 0. JT65 Transmission uses 64-tone MFSK, with each symbol value corresponding to a distinct tone. After being compressed into 72 bits, a JT65 message is augmented with 306 uniquely defined error-correcting bits. Ideally take the Ensemble antenna connection from the transceiver. More detail on JT65 JT65 uses the Reed Solomon code RS(63,12). Using an Ensemble with a conventional transceiver as a panadaptor. Using HDSDR with a RTL dongle And using the dongle as an IF panadaptor with a conventional rig.Īs a Panadaper with Tuneable SDR:- Using with a conventional receiver or transceiver. ![]() and You may find something here.įundamental settings for digimodes beginners, receive only. Other links:- Try (This is not an installation, the package needs to be extracted to a suitable folder and shortcuts made. (Or one may be useful for extracting libfaad2 dll for version 1.17). Some older versions, try them with HDSDR but the setup will be different from what I describe. There is a version here I have not tried this. may be found in Sodira (Note this has embedded DRM, this makes DRM easy but some prefer Dream) and in other, earlier, compilations of Dream. Read the legal information on the Sourceforge pages. This version is at Sourceforge but note the need to compile (or find) libfaad2 dll for it to decode audio. May 2014, there are later versions here Be aware different versions may not all behave in the same way. I have used version 1.17qt4 for my description, it is easiest to setup. you probably need to look at VOX settings, either that or the 7100 is offering rigctrl which fldigi notices and it can send PTT. This is one of the digimodes where one does not need VAC when used with a soundcard-based receiver, like a SoftRock. ![]()
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