Character codes for Egyptian transliteration

[Paul James Cowie]

Can anyone point me in the right direction for the codes for characters 
commonly employed in ancient Egyptian transliteration (NB: not the 
hieroglyphs themselves!) and based on Gardiner's Egyptian Grammar?

I'm thinking especially of the following:

the sign used for aleph (looks like a 3, but isn't, obviously)

the sign used for yod (looks like a i with a right ring tick above it)

the sign used interchangeably for q (looks like a k with a dot beneath 
it)

Any help most gratefully received,

------------

Paul James Cowie

London, UK and Sydney, Australia

Editor, http://www.ancientneareast.net/
Area Supervisor, Tel Rehov Excavations, Israel
Committee Member, Friends of the Petrie Museum of Egyptian Archaeology
PhD Candidate, Department of Ancient History and Archaeology, Macquarie 
University, Sydney, Australia