I purchased an arduino gsm shield and was able to get it working but only outside on perfectly clear days. I bought an sma antenna and soldered it onto the shield and now it does not work. I must have applied too much heat. I am good at soldering except when it comes to large things that are basically heat sinks. I do not know how to solder on the sma jack because it takes a long time to heat up enough so that the solder melts. Is there a tutorial on this? Also, how are we supposed to store and handle these devices. Special esd bags and wristbands? Please help me protect my investments.
Thanks.