Hello All Most of my 'soldering in the wild' has used a small gas-fired torch (a BIC lighter works well) but I have often used nothing more than a strike-anywhere match. Try it - you will be pleasantly surprised !
I wrap the knife-scraped-clean-wires together and then wind a length of solder into the spiral-gap between each turn and apply the heat. Solders every time when there is no wind. I have also used a candle to provide the 'heat'. Years ago at the Slate Peak fire-lookout in WA-State I repaired the light-meter on an old Super-8 camera that suddenly quit working. I had to dis-assemble the camera with my pocket-knife to expose the light-meter cell and found the broken wire. My 'field' soldering iron was a short piece of solid copper bus-wire from the lightening grounding system I found laying on the ground. I heated and tinned it using the propane fired stove in the LO and pressed it on the cell/wire interface. I always kept a short piece of solder rolled-up in my wallet for such situations. The fire-LO lady was very impressed. 73 Dick/w7wkr CN98pi _______________________________________________ UR RST IS ... ... ..9 QSB QSB - hw? BK