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+--- Thread: SDR play and AIRSPY sdr...how do they compare? (/thread-1028.html)
SDR play and AIRSPY sdr...how do they compare? - VK3LU - 15-02-2021
Has anyone had any experience with the above? How do they compare?
There is a fair difference in price and I wonder if that is a reflection on performance or features.
I note that the Airspy does not cover 6 metres which is surprising.
Nev
RE: SDR play and AIRSPY sdr...how do they compare? - VK4ADC - 16-02-2021
Nev
I use the AirSpy software with an RTL2832U/R820T2 USB dongle, and have tried a few other packages too (SDR# in different releases, etc) and I use mine on 6M at times, and on HF with a little up-converter PCB I built a couple of years ago. It has an active mixer plus SMD TCXO plus LPF input and HPF output sections that takes freqs between near-DC and 60MHz and converts them up to 100-160MHz. I don't use it as a general all-purpose receiver but more as a spectrum-analyser tool to check for spurious transmitters and interference sources. I don't think I ever put that project on my web site, one of many unpublished recent-ish projects.
I haven't had any direct experience with either brand hardware SDRs but did note the gap 30-60MHZ on the AirSpy HF+ specs. I assume the prices on their web sites are $US so that makes them 1/3 more expensive here, plus shipping costs. In comparison, my RTL dongle cost me about $AUD15 in my door from an Australian source a couple of years ago but the costs have gone up such that they are now $30-$40. Still a lot less than the two brands you quoted.
Check on eBay with a search term such as 'RTL2832U'.
RE: SDR play and AIRSPY sdr...how do they compare? - VK3LU - 16-02-2021
Thanks Doug,
I am asking mainly out of curiosity (and also to keep the forum ticking over).
I am very pleased with the performance of my IC7300 and wondered how the performance of the above units compared.
Nev
RE: SDR play and AIRSPY sdr...how do they compare? - VK2CSW - 19-02-2021
As a result of a sheer coincidence I ordered one of these last weekend, it arrived yesterday.
https://www.ebay.com.au/itm/RTL-SDR-USB-Tuner-Receiver-RTL2832U-R820T2-100KHz-1-7GHz-UHF-UV-HF-AU-STOCK/153952958919
Had a quick play with it and SDRSharp (Airspy). It is a bit deaf with the supplied antenna, inside the house, but that is probably to be expected. I need some bibs and bobs to get it connected to a better skyhook before I pass judgement.
RE: SDR play and AIRSPY sdr...how do they compare? - VK4ADC - 20-02-2021
(19-02-2021, 09:20 PM)VK2CSW Wrote: It is a bit deaf with the supplied antenna, inside the house, but that is probably to be expected.
Colin
I suspect that those antennas are a cheap-ex cellular model around 900MHz - I got one too - but I only use my SDR with an external antenna, usually a discone or one of my yagis. That makes a whole lot of difference.
RE: SDR play and AIRSPY sdr...how do they compare? - VK2CSW - 20-02-2021
Hi Doug,
I wasn't surprised that it wasn't so great. We are in a marginal reception area for broadcast radio and DAB+ radio at best but it did pick up a few things so it isn't completely deaf.
I did run a random piece of wire out the window which improved things.
Plenty of what look like birdies though.
Anyway, it's just something I bought to try and diagnose some interference to digital tv, we'll see what happens when I can plumb it into a better antenna..