I put a Hendrick’s Deluxe Tenna Dippier kit together today when I took an hour break from work. This is a neat little kit to find the resonant frequency of an antenna or ATU. The kit uses a TIny2313 microprocessor and has a 4 digit display in two ranges (via a push switch).
The kit has a single SMT (a 5v regulator).
I’ve developed my own ay of point soldering SMTs. I use blue painter’s tape over half of the part to keep it from flying away and to help in positioning and soldering. This lets me have two hands free for soldering if needed and makes the part easier to find if I drop it.
The kit went together quickly, the only problem being the indicator LED is supposed to be soldered about 1/2″ off the board. The LED needs to go through a hole in the case and I was a bit high. If you’re building the kit I would suggest using the case to determine the height when soldering, rather than following the written directions. Once adjusted, the board should fit nicely.
Testing the kit is basically powering the unit on with 6AA batteries and noting the range. You then put a load resister (provided) across the antenna connector and the LED should go out. I had no problems.
Tomorrow, I’ll work on painting the case and placing decals.
Here is a shot of the SMT on the blue tape and the board.
And here is the SMT tinned and positioned, ready for soldering.
Finally, the completed board ready for test.
I soldered the battery connector to the front of the board (inserted into the back) so that I wouldn’t have to snake wires when it’s in the case.
I’ll post an update once it’s enclosed.