How to buy an SDR chip

Show off any of your RTL-SDR or cheap SDR related projects.
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Alphy13
Posts: 3
Joined: Wed May 29, 2019 9:14 pm

How to buy an SDR chip

Post by Alphy13 » Wed May 29, 2019 9:50 pm

Does anyone know where I can purchase RTL2832U or similar chips? I dont want a usb dongle, I would like to use the chips in a project.

P-40 Warhawk
Posts: 86
Joined: Thu Jun 26, 2014 11:55 pm

Re: How to buy an SDR chip

Post by P-40 Warhawk » Fri May 31, 2019 11:35 am

Google the chip number and see if any the parts house have any for sale ,also you can buy a cheap dongle and scavenge the part from it .

Alphy13
Posts: 3
Joined: Wed May 29, 2019 9:14 pm

Re: How to buy an SDR chip

Post by Alphy13 » Fri May 31, 2019 8:30 pm

I have tried that several times but I keep getting flooded with results about the dongles. Buying a hundred dollars worth of dongles and attempting to scavenge them kind of defeats the purpose of it being inexpensive...
I was hoping that someone in this community has had some luck with this before.

rtlsdrblog
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Joined: Mon Nov 19, 2012 11:54 pm

Re: How to buy an SDR chip

Post by rtlsdrblog » Sat Jun 01, 2019 5:02 am

You won't find them for sale on the general electronics parts stores like Digikey. Our manufacturer gets them directly from the source. You might have luck inquiring on Alibaba, but they'd probably want you to take thousands.

Alphy13
Posts: 3
Joined: Wed May 29, 2019 9:14 pm

Re: How to buy an SDR chip

Post by Alphy13 » Sun Jun 02, 2019 3:02 pm

Thank you @rtlsdrblog !! I have had great experience with the dongles and software on this site for my personal use but I want to use some kind of similar chip for a university project.

Has anyone had good experience with other wideband SRD chips?

P-40 Warhawk
Posts: 86
Joined: Thu Jun 26, 2014 11:55 pm

Re: How to buy an SDR chip

Post by P-40 Warhawk » Fri Jun 07, 2019 12:00 pm

This I was surfing the web this morning and I came across this (The RadioBoard Forums ) this page http://theradioboard.com/rb/viewtopic.php?t=8759 . I found this by doing a Google search. sdr forums

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Airwind
Posts: 37
Joined: Wed May 23, 2018 8:27 pm

Re: How to buy an SDR chip

Post by Airwind » Mon Jun 10, 2019 2:35 pm

Hey rtlsdrblog, you think maybe you can sell a few of these chips on your webstore?

rtlsdrblog
Site Admin
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Re: How to buy an SDR chip

Post by rtlsdrblog » Tue Jun 11, 2019 5:24 am

Airwind wrote:
Mon Jun 10, 2019 2:35 pm
Hey rtlsdrblog, you think maybe you can sell a few of these chips on your webstore?
Unfortunately our contract factory wouldn't allow us to buy the chips directly from them.

aurgathor
Posts: 62
Joined: Wed Apr 25, 2018 8:14 am

Re: How to buy an SDR chip

Post by aurgathor » Tue Jun 11, 2019 2:21 pm

Just use the correct search terms such as "RTL2832U, chip, for sale" ;)

https://www.semiconductorstore.com/cart ... gLg5fD_BwE
https://www.ebay.com/i/192126175340?chn=ps
(hits from page 1)

radiolistener
Posts: 49
Joined: Thu Jan 25, 2018 10:48 pm

Re: How to buy an SDR chip

Post by radiolistener » Sat Jul 13, 2019 7:24 am

in my opinion, RTL2832 is a bottleneck. It works well for 20 dollars dongle receiver.
But if you want something better it will turns into the weakest part of your device.
It has small dynamic range, it has bad IMD, it has spurs, it has too small bandwidth...
It even cannot utilize all parameters of 820T/820T2 tuner.

I think it's better to use some real RF frontend, for example based on LTC2165 and some small FPGA for DDC.

It will give you professional level of parameters for your SDR ;)

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