You haven't even started and you don't know what you're talking about. With the CR-3 I could answer some questions in Radio Navigation or General Navigation that otherwise would require some calculation. Definitely not a waste of money, considering the price of the CR-3 and the over price of the CRP-5. Waste £80 I've ever spent. The CR-3 was just 25 euro.
Last edited by Banana Joe; 28th Oct 2020 at 07:09.