Scoping out oscilloscopes again.
The dollar is currently at AR$140.
A Hantek 6022be USB scope goes for AR$13900 (US$99): 20 MHz, 8 bits, 48Msps, two channels, new, two probes, up to 5V, or 50V with the probes set to 10×. It’s fully supported in sigrok and loads its firmware over USB. That’s a seller in Chacarita, and several other sellers have similar prices.
Several sellers sell the toy single-channel DSO138 200kHz for less, like AR$8000 (US$50).
Used analog oscilloscopes are the other option; a 20MHz 2-channel Hitachi V-212 in Rosario for AR$20k (but no shipping), a 20MHz 2-channel Protomax ??? missing its probes in Buenos Aires for AR$13800, a 20MHz 2-channel Pintek PS-200 in Haedo for AR$28000, a 20MHz 2-channel Beckman 9102 in Martínez for AR$50k, a 20MHz single-channel GW GOS-3310 missing its probes and maybe not working in Tres Lomas for AR$9000, an 8MHz single-channel Monfrini missing its probes and maybe not working in Lomas de Zamora for AR$8900, a 20MHz 2-channel Pintek PS-200 for AR$14500 in Santa Rosa, San Luis, and so on.
None of the analog oscilloscopes are all three of ① complete and working, ② possessed of two channels, and ③ cheaper than the Hantek scope by more than a trivial amount. Most of them are simultaneously more expensive and less capable. And there don’t seem to be any USB scopes that are significantly cheaper.
But I don’t know if it’s really worth spending US$100 on. Maybe I should wait to see if something cheaper comes along.