Zender Vonkenboer 1635 Khz Zender Vonkenboer is on 1635 Khz at 1701 Utc with SINPO 24333 at SDR Twente. Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Email a link to a friend (Opens in new window) Email Print (Opens in new window) Print Related