Electronics > Beginners
if you are a beginner...
Mjolinor:
Buy broken and fix. No better solution than that in any number of searches.
I have several network and spectrum analysers and they are rarely used. My S parameter test set and network analyser which I bought new, have not been out of the box for over five years.
bd139:
Buy and fix is an option. You'll learn something. Here's my thread on fixing a Tektronix 475. 200MHz scope so far for about £60 of expenditure:
https://www.eevblog.com/forum/repair/tektronix-475-repair-assistance/msg1323808/
Disclaimer: you need a scope to fix a scope and some experience so YMMV.
chris_leyson:
I was going to suggest a second hand radio comms test set, there's a Marconi 2955 on ebay for £600. You get a spectrum analyzer and signal generator for that price but the scope is only 50kHz BW.
rstofer:
The Rigol DS1054Z is popular for hobbyists but usually for non-ham related work. The 100 MHz bandwidth will cover up to 6m but is well short of 2m if you wanted to see the carrier waveform. I haven't been impressed with the built in FFT but it could be User Error. Pulling the raw data into Matlab may be more useful but I haven't tried it.
The new Siglent SDS1204X-E, when it is finally released, will be 4 channels up to 200 MHz. That takes care of the 2m frequency. Keep track of user tautech over in the Test Equipment forum - he is a distributor for Siglent in New Zealand and keeps a pretty good eye on what Siglent is doing.
I would suspect that radio amateurs have gotten by without DSOs for the very reason that their signals are continuous functions (the modulating signal could be a continuous tone). If that is true, there are a lot of used higher bandwidth analog scopes available. I bought a used 350 MHz Tektronix 485 for about $200 about 12 years ago. It has NONE of the capabilities of a modern DSO but it does have a lot of bandwidth.
As I watch w2aew's videos, I notice that he is using a high end analog scope (mostly). His channel might prove interesting to you. Some of his material is related to amateur radio and and some is related to electronics fundamentals and these videos are excellent!
You need to nail down what you expect the scope to do. I have no interest in radio but I do expect to be able to decode serial IO and watch digital signals at reasonable frequencies. For me, 4 channels is a nice feature. Sure, I got along with 2 channels all my life but 4 is really nice for decoding SPI. This is probably not necessary for amateur radio.
Tradeoffs, always tradeoffs...
tggzzz:
--- Quote from: vallywally5 on October 23, 2017, 11:04:18 am --- and if I want somethig like
Rohde & Schwarz RTB2002
what do you say ?
--- End quote ---
Why haven't you bought it? Why don't you use normal punctuation?
N.B. that is an answer to your overly terse question; it is not advice.
Navigation
[0] Message Index
[#] Next page
[*] Previous page
Go to full version