Re: Cool cheap oscilloscope for troubleshooting
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My club has a small knot of members who enjoy building stuff. Like everyone else, most of them can't justify the expense of $250 for a decent oscilloscope. One of our "serious" builders in the club upgraded his scope and donated his old scope to the club. Now anyone can use the club's scope for a project. So far, there's not been enough members wanting to use it at the same time to be a problem. This is now a benefit of being a member..access to some pretty decent test equipment. That same member gave a presentation on how to use the scope and it was well-received. I guess my point is: Instead of spending $25-$50 on a device and may or may not be sufficient to get the job done, consider acquiring a scope for the club. A new scope good to 100MHz is about $250, but hamfest, Craigs List, and other places have good used scopes at reasonable cost. Depending upon the size and makeup of your club, it might be a viable solution. Jack, W8TEE
On Wednesday, July 31, 2019, 10:43:48 AM EDT, Ashhar Farhan <farhanbox@...> wrote:
An easy way to extend the upper frequency range of an oscilloscope is to use a 'down converter' - a diode mixer driven by a VFO, like a direct conversion receiver. The mixer output is fed to the oscilloscope. About ten years ago, I wrote in a blog post that serious homebrewing needs a good scope. I must revise my claim. You need a spectrum analyzer of some sort. The reason is that our work is frequency domain. Our circuit blocks are filters, mixers, amplifiers and oscillators. All of them have inputs and outputs specified in terms of frequencies. It is this realization that led to the development of antuino. But that is a separate post.. On Wed 31 Jul, 2019, 6:10 PM Roy Appleton, <twelveoclockhigh@...> wrote:
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