2016-2020 Extra Class FCC Element 4
de Gordon West, WB6NOA, Eric P. Nichols, KL7AJ, Technical Editor, Pete Trotter, KB9SMG, Karin Thompson, K0RTX
de Gordon West, WB6NOA, Eric P. Nichols, KL7AJ, Technical Editor, Pete Trotter, KB9SMG, Karin Thompson, K0RTX
Master Publishing, Inc. · ISBN 9780945053866
