The first one only has a bandwidth of 200KHz @richpowers. To be effective for Part 15 on the AM BC band, you need a 'scope with a bandwidth of at least your operating frequency, and preferably a little higher. I'd want one with a bandwidth of, say, 5MHz.
I don't see what the bandwidth is on the second one but at that price, I'd be truly shocked if it's anywhere close to 1.7-2MHz.
At such a limited budget, you'll get a much better 'scope by purchasing a used analog one. Have a look at this video from Dave of EEVBlog fame -
However, I will say that the challenge in buying an old analog scope, is getting a good one. Older scopes, especially if going cheap, may well need some electrical restoration. Electrolytic capacitors may need replacing.
Part 15 on a very limited budget requires technical knowledge, creativity, and perseverance!
@rugster I was more curious than any thing else. Like a novelty toy that would still be functional.. which as you point out it would not be.
I likely won't be getting that serious with station engineering, but if that little O-scope were of use I'd grab one.
Thanks for clearing that up.