Re: [casper] heliospectroscope

2019-11-19 Thread Jishnu Nambissan T
Hi Tavi, It would be best to use an SDR or a board like Redpitaya or SNAP that can sample the entire band, but if you have got an RTLSDR, I can suggest a small trick that might work (no harm in trying). GQRX might be an overkill as you don't need the demodulation part. I have written a small

Re: [casper] Solar Spectrometer Channeliser

2020-02-10 Thread Jishnu Nambissan T
introduce IMD products. Otherwise I wouldn't expect the dynamic range for a relatively clean band to go down at single-stage down-conversion. Regards, Hari On Mon, Feb 10, 2020 at 1:00 AM Jishnu Nambissan T < [ mailto:jis...@rri.res.in | jis...@rri.res.in ] > wrote: Hi Mugundhan, With

Re: [casper] Solar Spectrometer Channeliser

2020-02-10 Thread Jishnu Nambissan T
Hi Mugundhan, With red pitaya, can you sample 20-80 MHz without downconversion ? And if analog down conversion is required, wouldn't that restrict the usable dynamic range (unless a high level mixer is used) ? Jishnu From: "Mugundhan vijayaraghavan" To: "casper" Sent: Thursday,