CommRadio CR-1a Newsletter 2015-2 :uly 20, 2015. (See newsletter
Contents
1. Show Realtime Spectrum Select Show Avg Power Select Noise Threshold Enabled and set Remove Below xx dB to 10 or 12 Set Average TC time constant 1 to 2 seconds o QoS Set Refresh Interval RI Typical 0 5 to 1 0 sec Right now this is causing a clicking sound in the audio path We are working to reduce or eliminate You will notice that TC and RI will change with band or mode changes More on 2 d This is a unique feature This is a software system to retain only signal that are at least a few dB above the noise floor For strong short wave broadcaster 15 or 20 dB is typical For CW and SSB it could be 8 to 12 dB However if set too low false signals actually noise peaks can appear The TC attempts to eliminate by being long enough to create a lower average on a noise pulse If set too high real single may not appear CR 1 amp CR 1A OWNER S NEWSLETTER SUPPORT COMMRADIO COM BCAA User Interface M O E E aaa o H Frequency 14 142 00 MHZ info Stream Spectrum 60dB 50dB 40dB T 5 GOdE MHz Time Mode 14 150MHz 14 200MHz 14 250MHz Spectrum Mode X Y Scale Show Realtime Spectrum Show Avg Power Averager TC 2 00s Noise ThresholdEnabled Remove Below 10 dB Show Legend Refresh Interval 0 25 s Show Tuning Freq Enable Click to Tune 3D Spectrum Waterfall Enable MouseWheel Tune MouseWheel Step 100Hz Dropbox The depository of the latest GUI version firmware firmware installa2. CommRadio CR 1a Newsletter 2015 2 July 20 2015 See newsletter 2015 1 dated July 14 2015 Rev 1 CR 1a GUI Spectrum Viewer amp 3D Waterfall for Windows 7 and later A revised Rev 1 version of the GUI announced on July 14 2015 has been placed on the Dropbox link indicated below It includes the dll file required by our USB IC for streaming I Q data There is no need to reload any firmware into your CR 1a assuming you loaded on or after July 15 DSP2000 image The big change is changing frequency using your mouse When viewing the upper graph Spectrum when you see a signal of interest 150 kHz of the center green vertical gradicule left click on the signal and it will tune to that frequency Actually you can just click anywhere on the Spectrum screen and the CR 1a will tune to that frequency On CW and SSB the mouse wheel is used for fine tuning 100 Hz increments With this new feature you can chase signals of interest very quickly You will be surprised on how many times you will be exactly tuned to a SSB signal without any further adjustment Notes have not had a chance to provide much documentation except for the video that was produced by Rich the best DSP embedded programmer on the planet Quick start 1 To start click implied left click on Stream on left side 2 To see the settings right click on the Spectrum screen A menu will appear a X Y Scale un select Autoscale Y Axis Un select
3. tion instructions and user manual updates All registered CR 1 and CR 1a owners are notified by email when updates and newsletters are posted on Dropbox CR 1a This is a new dropbox site as of July 15 2015 Previous Firmware Image on Dropbox DSP1993 PIC1993 CR 1 and CR 1a April 2014 Current Firmware Image on Dropbox DSP2000 PIC UNVE CR 1a only Next GUI Updates As GUI improvements are made no particular schedule Support Email with your questions bug reports and suggestions Please Email support vs calling It is far more efficient for us and there is a written record
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