Reddit reviews Siglent Technologies SDS1202X-E 200 mhz Digital Oscilloscope 2 Channels, Grey

1. It's your money, do what you want.
   
   
2. The downside of lower-price digital scopes is tiny memory storage depth, lower bandwidth, and lack of serial bus decoding. If you are working with any microcontrollers, then at some point you'll wish you had the ability to decode data on various serial buses, and yes it's worth the extra money to get it. I recommend that you look at other scopes that have serial bus decoding features. I found the following while looking at the Siglent website.
   
   $379 SDS1202X-E includes bus decoding for I2C, SPI, UART/RS232, CAN, LIN buses.
   
   
3. Users say the SDS1202X-E had some capacitors missing on models without "BB" in serial number, so ask before buying to ensure you get the fixed model. Look at comments at Amazon link below.
   
   https://www.saelig.com/product/sds1202x-e.htm
   
   https://www.siglent.eu/sds1202x-e.html
   
   https://www.amazon.com/Siglent-Technologies-SDS1202X-Oscilloscope-Channels/dp/B06XZML6RD
   
   

It all depends on what speeds you need. I regularly look at signals between 100MHz and 200MHz, so I recently bought https://www.amazon.com/gp/product/B06XZML6RD/ which is the cheapest I could find a 200 MHz scope. It's also seems to be the breakpoint for scope bandwidth on a budget - anything faster was over $1000 instead of ~$400.

Logic analyzers make more sense for digital work... but if your problem can be solved with a logic analyzer you can usually use the internal one (Each FPGA brand has something that works similarly: Chipscope, SignalTap, Reveal).

I only pull out a scope when I'm worried about analog fuckery like contention/ringing/rise time issues.

Few options at that price point.

Others have already mentioned Owen and Rigol, I'd add https://www.amazon.com/Siglent-Technologies-SDS1202X-E-Oscilloscope-Channels/dp/B06XZML6RD/ref=redir_mobile_desktop?_encoding=UTF8&keywords=siglent%20oscilloscope&qid=1503249344&ref_=mp_s_a_1_1&sr=8-1 siglent. They are all about the same quality scope,great for hobbiest but not the best for daily use. I believe keysight just came out with a dsox1000 pretty close to your price set as well.

The data stream is going to be a few kilohertz at most with these cheap 443 MHz units so that low cost USB scope will work. You only need to tap on to the data output of the 443 MHz receiver to read the data being sent.

You'll have to do manual decoding which is not hard at all. There are protocol analyzers built in to oscilloscopes, though. There is something to be said for a desktop scope particularly if it's your main scope. The "color temperature display and 256-intensity grading" feature is extremely valuable.

https://www.amazon.com/Siglent-Technologies-SDS1202X-Oscilloscope-Channels/dp/B06XZML6RD/ref=sr_1_fkmr0_1?keywords=Siglent+SDS1104X-E+100Mhz+digital+oscilloscope+2+channels+standard+decoder&qid=1567190698&s=industrial&sr=1-1-fkmr0

To directly sample a 433 MHz signal you'd need a 5 GHz or so oscilloscope which is many thousands of dollars. You pay for speed.

edit- with on-off keying you can put something like this with a wire antenna next to the transmitter and just read the output with any scope. I can also pick up some data streams from my cell phone with this although it's not on-off keying.

https://www.amazon.com/AD8318-Logarithmic-Detector-Measurement-1-8000MHz/dp/B074RFSLMP/ref=lp_306884011_1_2?s=industrial&ie=UTF8&qid=1567191106&sr=1-2