Technical Topics > SDR - Software Defined Radio
KiwiSDR, SDR-14 and possible cheaper options?
jon5500:
--- Quote from: ChrisSmolinski on February 01, 2021, 2307 UTC ---
The airspy covers all of HF (0-30 MHz) plus some of VHF. 768 kHz is the sampling bandwidth, you can view that much of the spectrum at one time. By comparison the SDR-14 was around 150 kHz.
--- End quote ---
I'm not sure we're talking about the same figure. I'm referring to the maximum amount of bandwidth that can be viewed at once. With my SDR-14, this was the entire HF spectrum. Perhaps I should have said maximum display bandwidth as mentioned here: https://www.scannermaster.com/SDR_14_Receiver_p/43-501311.htm?Click=20907 which is 30 Mhz. Can the Airspy do this also? All I've found so far is the 768 Khz figure you mentioned.
ChrisSmolinski:
--- Quote from: jon5500 on February 02, 2021, 0546 UTC ---
--- Quote from: ChrisSmolinski on February 01, 2021, 2307 UTC ---
The airspy covers all of HF (0-30 MHz) plus some of VHF. 768 kHz is the sampling bandwidth, you can view that much of the spectrum at one time. By comparison the SDR-14 was around 150 kHz.
--- End quote ---
I'm not sure we're talking about the same figure. I'm referring to the maximum amount of bandwidth that can be viewed at once. With my SDR-14, this was the entire HF spectrum. Perhaps I should have said maximum display bandwidth as mentioned here: https://www.scannermaster.com/SDR_14_Receiver_p/43-501311.htm?Click=20907 which is 30 Mhz. Can the Airspy do this also? All I've found so far is the 768 Khz figure you mentioned.
--- End quote ---
We're not ;D That is a special sampling mode the SDR-14/IQ have, captures of raw A/D samples, so you can generate a waterfall of the entire HF band at once (though you cannot demodulate). Most SDRs don't have that capability, so if it is important to you, your options are limited.
The Chinese RX-888 & related SDRs always send raw A/D samples to the PC for processing, so that would be one option. They run around $200. I have one, they're not bad for the price.
jon5500:
Unfortunately, I have had trouble with Chinese electronics almost every time I've made a purchase, so won't be going with those.
It looks like one of the earlier Airspy's had a special program written for it that would cover the HF spectrum, but the current unit doesn't support it. I should have mentioned early on I guess that I desired seeing the entire HF spectrum for crude spectrum analyzer purposes. I just didn't think the area would still be so specialized/ expensive, especially since the years have passed since the SDR-14 was in production.
Well, under the circumstances, I think I'll wait until I can at least get a Kiwi board on sale and pick up the Beagle somewhere else. Budget really is limited so have to watch funds closely.. I don't see the Kiwi coming up for sale used all that often, so the sale looks like the best bet.
ChrisSmolinski:
--- Quote from: jon5500 on February 02, 2021, 2041 UTC ---Well, under the circumstances, I think I'll wait until I can at least get a Kiwi board on sale and pick up the Beagle somewhere else. Budget really is limited so have to watch funds closely.. I don't see the Kiwi coming up for sale used all that often, so the sale looks like the best bet.
--- End quote ---
They have not had a sale on the KiwiSDR for some time (years). Demand has been far exceeding supply / Seeed manufacturing, so I would not expect a sale any time soon.
jon5500:
Then I'll have to wait or look for a used SDR-14. I have seen those occasionally show up on the used market. In fact, the one I had I bought used.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version