ARRL Products: Digital Communications(More)
VoIP: Internet Linking for Radio Amateurs -- Now Shipping!
-- Your complete guide to the most widely-used VoIP systems used by hams: EchoLink ,IRLP, eQSO and WIRES-II.
ARRL's VHF Digital Handbook -- Dive into the digital radio universe!
Morse Code for Radio Amateurs -- Includes a free CD of audio and computer programs.
Nifty E-Z Guide to D-STAR Operation -- Now Shipping!
-- The first comprehensive reference to the world of D-STAR operation!
Digital Communication Systems Using SystemVue -- An essential guide for anyone wishing to understand digital communication systems through simulations using SystemVue.
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