Originally Posted by tuberider
i have a weller 100-140 gun but the pl259 just doesn't seem to get hot enough. i leave the gun on the connector for at least 20 seconds, but doesn't seem to get hot enough. any more then that and i worry about damage. i'm hoping hotter weller gun will work better
A 120 watt soldering IRON is fine. A 125 watt soldering GUN is not. The iron has a high mass element/tip which stores heat and transfers that heat quickly to the PL259. The gun has a low mass tip that can't heat it up fast enough. Eric uses a high wattage gun in a different fashion, which makes the PL259 itself the heating
element, that works well for him but you have to have a modifed tip to do that.
In a pinch Ive used a 140 watt gun to solder PL259 plugs, but it is an exercise in frustration with a high likelihood of a poor or shorted result.
It helps to get good quality plugs, ideally Amphenol with Teflon insulators. Silver plated versions are easiest to solder. You can get these from thewireman.com for reasonable prices. There are other good vendors too. I think Ive even bought Amphenol plugs from the local Radio
Shack, which typically doesnt have the highest quality parts
even though relatively expensive.....