![]() ![]() The output from CLK2 is 3V3 pk-pk or 1.65 V RMS. ![]() The SMeter Cal Freq when switched on generates a 10 KHz square wave on CLK2 of the SI5351 as described in Burkhard Kainka’s book, 7.2, “SDR Hands-on Book”. If you have a V1 SDRShield then very good soldering skills are required if you want to use this facility, ie not recommended.įollow the procedure for IQ balance/Image rejection described in 4.7. If you have a V 2 SDRShield then attach a short length, eg 30cm, of wire to the CLK0 header pins. The IQ Cal Freq facility when switched on generates a carrier 1 KHz up from the current tuned frequency on CLK0 of the SI5351. The SDRShield calibration window in Config has been augmented to provide additional functionality including an improved frequency calibration method. The SAM lock indicator will light up green when the G8JCFSDR’s internal numerically controlled oscillator is locked to the AM carrier. SMD SAM Double Sideband, ie both sidebands used QRM, SAM can be useful to select the opposite sideband to the one being interfered with. Also, when there is adjacent channel interference. SAM demodulation can be of help when fading, QSB, causes the AM carrier to almost disappear into the noise. Note that the AF output sampling frequency is always 48000 samples/second enabling one to use the inbuilt soundcard and speaker(s) of your system whilst using a higher specification sound card to capture the IF output from the SDR down converter. ![]() Your existing Bandplans, Themes and Registry settings should be preservedif you are upgrading from an earlier version.īuild 282 has many fixes and new features - see the QuickStartGuide for more details.Īssuming that your sound card can support these higher rates – every soundcard I have used supports 48000, and most support 96000, with some supporting 192000, and very few (very expensive) supporting 384000. The G8JCFSDR has been tested on all versions of Windows from Windows XP to Windows 10, and even under WINE.īuild 282 is a FULL install, ie there is no need to install any other version first. Under Vista/Windows 7/Windows 8/Windows 10, see VISTA/Winħ/Win 8/Win 10 Issues. Send G8JCF a message with any comments/questions. If you are having problems with installing or running G8JCFSDR please ![]()
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