Maybe just to see if you can still do it, without actually going on air? Now you can, and it won’t cost an arm and a leg.
This article describes in detail a morse oscillator circuit you can build for under £6. Advice and support are available from author Dave Ellis (details on page 6) if you get stuck.
As a bonus, a very nice morse key is available for £23. These are new ex-Czech army keys, most still in the original packaging. The author has one, and it’s a great key. Just go to ebay and type “Czech Morse Key.” Be sure to pick the seller offering new keys. If you can’t do the web or ebay, once again the author can help.”