A shot in the dark
I wanted to test the BLT+ Tuner portable with a ladder line fed Doublet but my time has been limited. After getting home from work one night I assembled a 40m Doublet fed by 450 Ohm ladder line in my driveway.
I pushed the Doublet up on my Jacktite pole and attached the ladder line to the BLT+ and attached the BLT to the KX3. I had the KX3 sitting on the deck table running on internal batteries.
|BLT+ tuning the balanced line antenna|
|Doublet on Push up pole. Moon in the background.|
However, the QRP to contact was a success on a portable antenna, tuned with the BLT+ driven by a rig running on internal double A batteries.
I didn't try higher bands because it was so late in the evening so I packed it all up declaring success.
|Balanced line tuner doing it's job|
Tuning 20m was a bit touchy because my total length of one leg of the doublet plus the feedline is too near a 1/2 wavelength on 20m. I need to add about 7 feet of ladderline to keep it from being near odd 1/8 wavelengths of the bands I want to tune. Or I could add 7 feet to each leg of the antenna. I will need to do that before the next test.
That's all for now
So lower your power and raise your expectations