Electronics > Beginners
if you are a beginner...
bd139:
+1 agree.
Incidentally I built a 2m receiver with a counter and a DMM and an RF probe. Total gear cost was about £30.
Brumby:
--- Quote from: janoc on October 24, 2017, 11:49:05 pm ---(btw, even 2m is doable with the 100MHz Rigol - the frontend is usable to some 150MHz, even higher if you can put up with some attenuation. Certainly not ideal, but possible if you just want a quick check of the signal).
--- End quote ---
+1
My own personal experience on this was checking the output of a 27MHz transmitter for a RC vehicle. At the time, all I had was a 15MHz Hitachi CRO - but hooking up the transmitter to the scope, I was able to see the carrier modulation respond to the operation of the controls. Sure, the level was down and uncalibrated, but I didn't need quantitative measurement - just a qualitative observation.
Knowing how to work past the published "limitations" relies on you understanding your instrument well enough to do so. An example of which is knowing what you can do on a CRO is not necessarily doable on a DSO.
jacklee:
that depends on if you are rich :-DD
tggzzz:
--- Quote from: bd139 on October 25, 2017, 12:01:35 am ---Incidentally I built a 2m receiver with a counter and a DMM and an RF probe. Total gear cost was about £30.
--- End quote ---
But you couldn't do that for a 2m transmitter!
bd139:
--- Quote from: tggzzz on October 25, 2017, 08:16:18 am ---
--- Quote from: bd139 on October 25, 2017, 12:01:35 am ---Incidentally I built a 2m receiver with a counter and a DMM and an RF probe. Total gear cost was about £30.
--- End quote ---
But you couldn't do that for a 2m transmitter!
--- End quote ---
No I’d use an absorption wavemeter too :)
You can get away with some proper rancid old cack if you understand it to some degree. My father was a ham in the 1950s and he used a home brew voltmeter and GDO and that was it. Clearly standards have to be better than that now but do we need them to be £1000+ better?
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