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I posted the below question in some of the GNURadio communities here on this website, then I got denied and my question was considered as off-topic since that was a GNURadio programming forum. Now I'm confused where I should post this question on this website!

I'm trying to run some transmit/receive RF examples that I found online using GNU Radio with USRP B200. I read and heard about some cautions in terms of transmitted frequencies here in the USA which made me slow down! What is the legal frequency signals that I can transmit in the USA as a hobbyist or a student? Kind of, I felt lost while looking at the following USA Frequency Allocations Chart:

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Assuming I know what is my ISM band allocation value, where I should input this value, I mean which block?

The other issue is the safety issue. I don't want to fry my tools, so how and where I should set the power? Again, which block I should be looking at?

Any hints, clues, or recommended resources would be highly appreciated.

Also, is there any link to a loopback example that I can practice/experiment?

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    Might be helpful to say what site you actually tried
    – Journeyman Geek Mod
    Jul 7 '19 at 0:15
  • @JourneymanGeek, I posted it in one of the stackoverflow communities which I can't remember the exact community name. Here is a link to where I posted it: stackoverflow.com/questions/56910683/…
    – Hadad
    Jul 7 '19 at 0:54
  • Please use the edit button beneath your question to revise it with any requested clarifications.
    – PolyGeo
    Jul 7 '19 at 0:58
  • By "GNURadio community", do you mean a tag on Stack Overflow? Or on the Stack Exchange site "Amateur Radio"? Or something else? Jul 7 '19 at 2:36
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You've asked a lot of questions in one. Try to split them up into their relevant components.

What is the legal frequency signals that I can transmit in the USA as a hobbyist or a student?

This is a purely legal question about the regulations of your country. For this, you want Law.

I don't want to fry my tools, so how and where I should set the power?

This is about electronics safety, which fits perfectly on Electrical Engineering.

Assuming I know what is my ISM band allocation value, where I should input this value, I mean which block?

If this is a GNURadio-specific, you could try Signal Processing, which has quite a few GNURadio tags.

For questions related to amateur radio, the aptly-named Amateur Radio has plenty of GNURadio tags.

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