Reddit:Electronics

It probably won't work but I figured I would try, it's a vhf transmitter circuit

This is my grandfather during WW2 inspecting what I believe is a Marconi SWB-11. Grandpa was an Australian based radtech for the Army. I am curious in anyone knows what the designation of KURE II is for.

Spent a couple hours today getting the silicon die out from one of these epoxied on chips. Using a small alcohol lamp. Sadly, I got some of the super glue I was using to mount it to a slide on it.

I was interested to know why a usually 5pin connector plugged to a 5 wires cable had 7 pins. So I took an old connector and opened it up !

I discovered that it was a standard 5 pin connector with 2 unused pins that I labelled "Shield". You can see on picture 4 that when connected to any standard cable, the "shield" pins are just unused and don't connect to anything.

Knowing this, It will be quite easier to repair Samsung devices (where I found this kind of connector mostly) : this is almost 100% compatible (except the anchor points) and a standard generic 5 pin microUSB does the same job really well. Maybe less sturdy but still functional.

This was a quite nice discovery for me ! I just wanted to share, since I didn't find a lot of talk about 7 pin microUSB connectors on the Internet