Shielding EzTV668 receiver

Sunday October 28th, 2012 by Acinonyx

The soldering side does not need any additional shielding since the PCB has a ground copper pour which protects the components from EMI.

The component side can be shielded using aluminum tape or aluminum foil and glue stick (photo #1). I used a small spring, taken from and old battery case, to achieve electrical connectivity between the foil and the PCB ground. The spring was soldered in such a way that it touches the aluminum tape when the casing is closed.

For extra shielding against EMI from the computer itself, I used a USB extension cord on which I added a proper ferrite bead.

Posted in General, Electronics, HAM Radio

3 Responses

  1. RTL2832U Noise, shielding and cables - HAM Radio

    […] dongles ship in leads electrical interference susceptability. It is best to shield them if you can. Acinonyx describes one way to doing this using a single strip of aluminum tape combined with a spring to connect it to […]

  2. Chris

    I would use some conductive braid around the edges instead of the spring because of the spring’s inductance. The two sides of the case with the inductor between then make a resonant circuit with very high q at some frequency, lower than that frequency the L will dominate in terms of conductance, at higher frequencies the C will conduct more/ An alternative is some fairly tightly woven metal braid that makes multiple connections

  3. RTL-SDR and GNU Radio 完善的资料汇总 | HackRF.net

    […] interference susceptability. It is best to shield and put ferrites on everythingif you can.Acinonyx describes one way to doing this using a single strip of aluminum tape combined with a spring to connect it […]

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