Tag Archives: QSK

Henry 2K-4 RF Amplifier QSK Modification

by NE7X … To resolve this QSK problem I decided to replace the slower mechanical T/R relay in the Henry 2K-4 with high speed Gigavac model GH1-HAM (datasheet) 5KW RF 6ms 12VDC SPDT vacuum relays. Not only will this resolve … Continue reading

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