I'm on my summer trip to Slovakia and recently discovered that I can't work digital modes because my Thinkpad T510 laptop does not have the standard separate 3.5mm jacks for the headphone and microphone. Instead, it has a single 4 pin 3.5mm jack for both, the same type used in an iPhone for hands free, seehttp://pinoutsguide.com/HeadsetsHeadphones/lenovo_audio_pinout.shtml
I don't have time to order an adapter and the local stores do not sell them. My only hope is homebrew an adapter by cannabalizing an iPhone hands free headphone/microphone combo. I found one of these and clipped off the ear buds and the mike. Now all I have to do is solder the loose wires to the appropriate pins on two 3.5mm jacks I obtained. Sounds easy, but I have never seen wire like this before. It is of course thin and insulated. There is also some sort of string inside. I tried to remove the insulation but I must be doing something wrong, can't get continuity between the ends of the wires and the plug. It must be doable, I must be using the wrong technique.
Anyone ever stripped wire like this? Any tips?
Thanks and 73,