After a couple days of HEAVY rain, it was good to see the sun again. Following a great breakfast and heavy discussions of antenna theory, propagation, politics and diets, we hit the field next door. The wind was very strong gusting in the mid 20’s most of the day. This made launching antennas a bit complicated, but it did help dry out the ground.
Tiny Loop goes into action
Bart AI4NF brought his new MFJ 936B Loop tuner and setup very quickly. It seems to hear very well and soon the sound of cw was in the air. 20m was pretty active and eventually a signal was even heard on 10m! What a blessing! We did learn that the antenna was coupling to the metal frame of the card table and made it difficult to tune. After putting it on the small cooler it tuned more normally, with a very sharp and obvious peak when in resonance. Later we put the cooler on top of the table and that solved most of the problem and eliminated some of the ground coupling and loss.
I got to test my clone of Nick WA5BDU’s End Fed Halfwave Matching Device. It worked great and I was able to tune sloping half wave antennas on 40 and 30 meters. This tuner is unique in that it is simply a toroid and does not use a capacitor at all! On the bench it tunes 3-12Mhz at 1:1-3 to 1 half wave antennas. Next outing I hope to test the 80m halfwave and see it theory and practice agree.
Great day to be out at the lake even if it was windy!
K4UPG on 30m lakeside in SE Orlando, FL