Welcome aboard!
Don and Greg summed it up pretty well. Don't worry whether you have a scope or not. I didn't. All I did was exactly what Don said do... inventory, check, solder carefully. Patience. If you practice those, you won't need to trouble shoot! The rest is learning what the thing is saying, how to calibrate, what it's doing, etc... and... is that signal or dadblamed neighbor's plasma tv???
Couldn't help but chuckle over Don's last paragraph:
Good luck building your new kit and do ask questions if you aren't certain about anything. There are many folks here on this forum and in the Blitzortung forum who can help you get through the process. Just don't be afraid to ask questions.
What you see on this forum is only the tip of the iceberg. Last year as we were getting this thing rolling, we burned up hyperspace figuring things out. (Still are, to a degree). The point I want to emphasize:
Any sticky point, strange question, problem, whatever.. stop right there, throw it at us. We've probably already pulled our hair out over it, and you don't have to.
Oh... Generally, the end of the soldering iron
opposite the power cord is the hot end...
Mike