Tag Archives: self-installation radio

Radioreceiver in retro look – The finishing

IMAG1299
The wooden case is painted

Now that the front panel is milled, it can be cleaned and the engravings are provided with black paint. After the varnish has dried in the indentations of the engraving, the supernatant paint is removed with solvent. Now the entire panel could be painted with clear lacquer.

While the paintwork on the front panel is drying, it’s time again for the wooden cabinet. The mounting holes for the boards, speakers, etc. were drilled and then the wood was embedded with a slightly darker wood stain. After drying, the wooden case also gets a clear coat.

In the next step, the operating elements (switches and rotary encoders) and the LC display are attached to the front panel. The milled webs for the speaker panel are covered with black fabric. (For the fabric had to serve a T-shirt).

IMAG1307

 

The painting of the housing dried about a day. Now you can start mounting the speakers and the board.

IMAG1301
Installation of the speakers

 

Die Platine wird mit Abstandhaltern am Gehäuseboden verschraubt.

IMAG1302
Assembly of the board

 

Now a suitable power supply is missing. For this purpose, a small power supply was built, which consists only of an iron core transformer with subsequent rectification, smoothing and voltage stabilization with a LM7809, ie 9V DC. For this, a small board was made (about 5x8cm) and also built into the housing with spacers.

IMAG1328
Power supply 240V AC to 9V DC at max. 350mA

 

Now that everything is assembled, the amplifier metrics and levels are again set and optimized with signal generator and oscilloscope.

IMAG1332
Adjustments

 

The finished radio receiver now looks like this from the front …

IMAG1308
Radio from the front

 

und die Geräterückseite ist im nächsten Bild dargestellt:

IMAG1333
back

In the short video, the radio can be seen in operation:

www.pdf24.org    Sende Artikel als PDF   

Radioreceiver in a retro look – Update: The case

IMG-20150130-WA0000-2 It’s time! The first picture of the absolutely real wooden housing for radio electronics is here. A beautifully crafted housing made of glued elements. This work comes from Gebhard’s hands, a master carpenter from the Upper Carinthian region;)

IMAG1272
Housing with holes for the speakers

Jetzt kann das Nostalgie-Radioprojekt wieder einen Riesenschritt nach vorne machen.

frontpanel
This will be the aluminum front panel

The case is on our table. First, the holes for the speakers were drilled. Later these should be covered by a milled aluminum panel. So the next step is to construct the milling data for the front panel. Here again the layout tool “Eagle” is used. The data can simply be exported as a “.dxf” file and imported into the circuit board plotter software.

 

UPDATE:

Barely a few minutes, I went to the circuit board plotter, imported the production data, clamped the “two-cutter cutter”, of course, the aluminum blank and off we went.

The speed for the 1mm cutter I have chosen with 60000 rpm and set the feed rate to 1.5mm / s in both axes. Cooled and lubricated was the way with alcohol.

A not negligible amount of work is, by the way, the cleaning of the plant after the work done … 🙂

IMAG1281

 

www.pdf24.org    Sende Artikel als PDF