top of page
Dan Koellen AI6XG
May 9, 20249 min read
LCD Display for the KD1JV TriBander
In an earlier post I described the modifications I made to the KD1JV designed TriBander to make it more useful for SOTA. The...
293 views
1 comment
Dan Koellen AI6XG
May 2, 20236 min read
QRP Tube: High Voltage DC to DC Supply Evaluation
The high voltage supply for the vacuum tube transmitter needs to be low noise in the 40 meter band, efficient for battery operation and...
430 views
0 comments
Dan Koellen AI6XG
May 2, 20236 min read
QRP Tube: T/R Switch and QCX Interface and Modification
A Modified QCX and TR Switch for Vacuum Tube SOTA transmitter
363 views
0 comments
Dan Koellen AI6XG
May 2, 202316 min read
QRP Tube: Single Tube SOTA Transmitter
A single tube transmitter is developed for portable and Summits on the Air (SOTA) use. The SOTA transmitter had to be relatively...
557 views
0 comments
Dan Koellen AI6XG
May 2, 20235 min read
QRP Tube: Vacuum Tube, Battery, Lightweight, Compact, Portable: Can They Coexist?
Using vacuum tube equipment for SOTA activations? Why not! A portable battery operated vacuum tube transmitter is part of a SOTA system.
1,789 views
0 comments
bottom of page