Wireless transciever with external antenne does not work.

[Corvl]

Hello all,

Can someone help me with the following.

I have succesfully made a serial gateway and a servo actuator. I want to use the tranciever with external antenne. When I use the one without the external antenna:
http://www.ebay.de/itm/311156596257?_trksid=p2060778.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Everything is working fine.

When I hook up the shield with external antenne , it doesn't work.
http://www.ebay.de/itm/310651702557?_trksid=p2060778.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

I tried to power the shield with an external powersupply and a stepdown thingy to get 3.3 v
Also the Decoupling-Capacitor is installed , but as soon as I switch the tranciever shield , from the build in antenna to external antenna , no joy.

I have tried several Arduino nano's
http://www.ebay.de/itm/291244948748?_trksid=p2060778.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

and this one:
http://www.ebay.de/itm/301404799100?_trksid=p2060778.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

But all the same.

When I use my Arduino uno, it works , when I connect the external antenna shield directly on 3.3v or with stepdown on 5v or on external powersource with the stepdown regulator.

Anyone has an idea why I can not get it to work on the nano's?

thanks,
Cor

[hek]

Try with some different sizes/variant for the decoupling capacitor.
Try some other regulator/powersource.

[Corvl]

okidoki, will do ,
thanks,
Cor