4F1OZ, 4F1GNW, DU1COP, 4F2KWT will be active from Tinaga Island, Calagua Islands, IOTA OC - 202, 21 - 23 April 2017 as DZ4C.
They will operate on 40 - 15m CW, SSB.
QSL via VE7DP.
Ads for direct QSL:
Franc Toplak, P. O. Box 209, Cedar, BC V9X 1W1, Canada.
DXCC Country - Philippines DU.