This can be converted into a radio mental effect, Bryan.
A CARD TRICK WITH NO CARDS
This can be performed for an entire roomful of people, or for a caller you are speaking with, live.
Think of a card
Multiply the value by 2 [J=11, Q=12, K=13] all others, face value
[the hard part] Add 1 to the total
Multiply by 5
If it's a Spade add 9, Heart 8, Diamond 7, Club 6
What's your total?
How it works
Subtract 1 from the first digit/s in the total -- that will determine the card value
The last number will be either a 1, 2, 3, or 4
That will tell you the suit -- 1=C, 2-D, 3=H, 4=S