My WSPR rig - Ultimate 3S kit

2017-04-08:

I am building Ultimate 3S kit and testing it along the way. Some pictures of the build

1. Main board, starting point
2. Bifilar toroid
3. Basic set assembled with 10 m LPF
4. First light, diagnostic screen
5. CW test on 10 m
6. More toroids for 20 m, 40 m and 80 m LPFs
7. All LPFs lined up 10 m, 20 m, 40 m and 80 m (L-R)
8. All LPFs lined up 10 m, 20 m, 40 m and 80 m (B-T)
9. Kit complete with relay-switched LPF board
10. CW test on 20 m

2017-07-28:

The kit has been operational since beginning of July. I had some common issues, like:

1) Bad power supplies. Solved by using 12 V 4,5 Ah battery, no more power supply noise.

Battery and regulators

2) Bad soldering of toroid wires. It takes a very long time to burn off the enamel using solder.

Today I received my antenna materials and build a neat and measured antenna. It is an inverted vee dipole on my balcony. With this antenna, the first spots are coming at 1729 km on 10 m band with about 250 mW.

Improved antenna

Next I will get an antenna analyzer and antenna tuner as well.

AttachmentSize
Image icon 170.6 KB
Image icon 229.63 KB
Image icon 345.33 KB
Image icon 445.14 KB
Image icon 548.31 KB
Image icon 638.64 KB
Image icon 754.38 KB
Image icon 879.21 KB
Image icon 951.31 KB
Image icon 10_20170604_144518_edited.jpeg40.62 KB
Image icon battery-regulators.jpg176.7 KB
Image icon improved_antenna_small.jpg587.48 KB