We created manuals in different languages.
The Dutch and English version are updated
JC-3s English Version 8.1 (out of production)
JC-4s Manual English Version 11.1 (model 2021)
JC-4s Gebruiksaanwijzing Nederlands Versie 11.1
JC-4s Bedienungsanleitung German Version 9.3
JC-4s indicación de uso Spanish V9_2
JC-4s indicación French ( download from website F1QM )
JC-5s Manual English Version 7.3 (out of production)
SWR-5000 Manual English (out of production)
ON7FU Current Balun Common Choke
ON7FU Current Balun Common Choke German
ON7FU Coax Line isolator 50 ohm
ON7FU Coax Line isolator 50 ohm German