Timeline for Broadband antenna for SDR radio
Current License: CC BY-SA 3.0
8 events
| when toggle format | what | by | license | comment | |
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| Jul 28, 2017 at 16:26 | vote | accept | Luca | ||
| Jul 27, 2017 at 12:41 | comment | added | Marcus Müller | @SDsolar not quite! In practice, I very rarely see nonlinearities actually becoming a problem. It's a problem that seems to be very stressful to the ham community, from what I gather from talks at conventions, but for comm engineers, it's not really all that present – think about it, if the deafining effects were so strong, you couldn't be using multiband antennas in phones. So, believe me, a high antenna selectivity is really not necessary with modern receivers. But of course, if you need to maximize SNR, you take all the filtering effects you can get. | |
| Jul 27, 2017 at 10:03 | comment | added | Luca | Woah! Lots to digest but thanks a lot for the answer. Yes the DX-patrol is aslo based on the RTL28xx chip. Regarding sampling I can comfortably keep it at around 1-2 Mbps but higher tends to ruin signals (my PC isn't exactly the cutting edge). I messed around with the gain settings. The autogain is complete rubbish and, as you said, I keep it manual on the border before getting the "ghost" signals. The RTL also generally only makes the noise floor higher without any real advantage. | |
| Jul 26, 2017 at 23:52 | comment | added | SDsolar | Heh, heh. That would sure pick up a lot of noise. I no longer own a Dentron Super Tuner, either. I think you just proved the point that resonant antennas are best. | |
| Jul 26, 2017 at 19:43 | history | edited | Marcus Müller | CC BY-SA 3.0 |
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| Jul 26, 2017 at 19:38 | history | edited | Marcus Müller | CC BY-SA 3.0 |
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| Jul 26, 2017 at 19:28 | history | edited | Marcus Müller | CC BY-SA 3.0 |
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| Jul 26, 2017 at 19:22 | history | answered | Marcus Müller | CC BY-SA 3.0 |