Aluminium tape solderen..

Aluminum can be soldered with normal tin/lead solder for electronics provided the aluminum surface is sanded with a glass fiber brush, a stainless steel brush or sandpaper in order to remove the oxide layer.

The point is, that it is almost impossible to solder aluminum with normal tin/lead solder because the brushed and cleaned surface oxidizes as soon it comes in contact with the air. Thats why you have to brush the surface under heatresistant motor oil. The oil protects the brushed surface from the oxygen in the air.

You can take any heatresistant oil. Any motor oil and even oil for automatic gear transmissions will do the job. It works better if you sand the aluminium surface with a drop of oil and a glass fibre pencil. Don´t wipe away the grey mud, which appears. It is important that the surface is always protected from oxidation by the oil. Then scratch with a hot soldering iron and some solder on the surface. It it not works probably the temperature is too low.

The trick with the engine oil has been known for many decades. Unlike shown in the movie, it would be even better to clean the surface in oil, since aluminum oxidizes rapidly in air. But I did not want to pollute my fiberglass brush with oil. According to other sources the motor oil can be replaced by paraffin oil.

This method reveals new possibilties. Shieldings made of thick aluminum foil and aluminum heat sink plate can be soldered directly to the PCB.foto van PD0G.

foto van PD0G.

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PHOTO ALBUMS  working on

Here are some photo albums of self-built antennas and other things for hamradio​.
Below are the links to the photo books, with which projects I am currently working on. photos are always added.
verlichteArrow satelliet antenne 70cm 2m  https://photos.app.goo.gl/baHJfwgessh0cIr12
verlichteDoppler Array 70cm CJU IOIO   https://photos.app.goo.gl/bYeV93QaGEbEJGh93​
verlichteRadio Direction Finding RDF-41  https://photos.app.goo.gl/9de8QE934lB3zKi72
verlichteElevatie rotor. Door opener. https://photos.app.goo.gl/6BhCFlmPy1akcfF12
verlichteLED RF Field Strength Meter. https://photos.app.goo.gl/2PIOuZ8HDXFXiM6l2

MMana Astroplane

MMana

I have a lot of files for MMana.
Various lengths and material.
Here an astroplane for 70cm

And code MMana Astroplanemmana bestandenmmana voorbeeldmmana afstralingmmana bereken

Astoplane bij PD0G
*
433.0
***Wires***
23
0.0, -0.01, 0.0, 0.0, -0.025, -0.05, 0.0015, -1
0.0, -0.01003, 0.10966, 0.0, 0.0, 0.10966, 0.0015, -1
0.0, 0.0, 0.10966, 0.0, 0.01, 0.10966, 0.0015, -1
0.0, -0.01, 0.11, 0.0, -0.01, 0.0, 0.0015, -1
0.0, 0.02407, -0.05, -0.01, 0.02395, -0.05, 0.0015, -1
0.0, 0.01, 0.10966, 0.0, 0.01, 0.0, 0.0015, -1
0.0, 0.01, 0.0, 0.0, 0.02407, -0.05, 0.0015, -1
0.0, 0.0, -0.3, 0.0, 0.0, 0.10966, 0.0015, -1
0.01, 0.02407, -0.05, -0.01, 0.02395, -0.05, 0.0015, -1
0.01, 0.024, -0.05, 0.024, 0.01, -0.05, 0.0015, -1
0.024, 0.01, -0.05, 0.024, 0.0, -0.05, 0.0015, -1
0.024, -0.01, -0.05, 0.01, -0.025, -0.05, 0.0015, -1
0.01, -0.025, -0.05, 0.0, -0.025, -0.05, 0.0015, -1
0.0, -0.025, -0.05, -0.01, -0.025, -0.05, 0.0015, -1
-0.01, -0.025, -0.05, -0.026, -0.01, -0.05, 0.0015, -1
-0.026, 0.01, -0.05, -0.026, 0.0, -0.05, 0.0015, -1
-0.026, 0.01, -0.05, -0.01, 0.02395, -0.05, 0.0015, -1
0.01, 0.0, 0.27, 0.01, 0.0, 0.0, 0.0015, -1
0.01, 0.0, 0.0, 0.024, 0.0, -0.05, 0.0015, -1
-0.026, 0.0, -0.05, -0.01, 0.0, 0.0, 0.0015, -1
-0.01, 0.0, 0.0, -0.01, 0.0, 0.27, 0.0015, -1
-0.026, 0.0, -0.05, -0.026, -0.01, -0.05, 0.0015, -1
0.024, 0.0, -0.05, 0.024, -0.01, -0.05, 0.0015, -1
***Source***
1, 0
w8e, 0.0, 1.0
***Load***
0, 1
***Segmentation***
400, 40, 2.0, 2
***G/H/M/R/AzEl/X***
2, 3.0, 4, 50.0, 120, 60, 0.0
$$$Taper wire set$$$
1
-0.001, 0, 1.8, 0.015, 1.8, 0.0125, 99999.9, 0.01

AstroPlane antenna 70cm MMANA

Dubbele Astroplane

Met MMANA  (is een antenne-analyse tool programma)  heb ik een 70cm antenne met 2 AstroPlane boven elkaar gezet en verbonden met een 1/4λ Stub.

Resultaat  is niet slecht…. zeer goed zelfs. 9.14dBI.

Ga maar eens een poging wagen om deze na te bouwen.

12-10-2017 update.
Verslag staat in het fotoboek.  https://photos.app.goo.gl/4PgoZ9T9LfVmalUq1

 

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