zondag 16 juni 2013

Bitx20 V3 "Dead Bug Style" Building the Case

First I want to start my blog with a special thanks to my radio friend PA1SBM.Alex was so kind to put some nice comments on his blog.Just like me,Alex is also building a Bitx20 and has some other interresting things to tell on his blog.Pay him a visit on PA1SBM. Since I`ve been out of the country for two weeks,it was time to do some work on my Bitx20 V3 project.The plan is to put all the modules onto a larger piece of double side copper circuit board.I put the modules on a rail,so they are 5mm above the main board.I can now later do some wiring under the modules,so you won`t see.On the pictures you see the projekt until now.An S-meter and the knobs from an old CB-radio.
Here some pictures how the modules are positioned on the 5mm rail.
 
After I de-soldered all the modules I`ve put the first module (Audio module) on the big board.Here you have a good look on the two 5mm rails.
Two modules on the rail,BFO/Mixer module.
Detail of the rail.

And another detail of the rail,this time you can see the bandpass filter in close up.



View from the top.The two potentiometers for the volume and for the VFO fine adjust.The empty hole is for the tuning capacitor.Maybe later I will replace the tuning capacitor with a varactor with a 10 turn 10K potentiometer.Also the S-meter from an old Danita CB radio is in the front.

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