Tag: DIY

QRP Lithium-Ion DIY Pack

Lead acid batteries are heavy and don’t have the power density of lithium-ion chemistry batteries. I wanted a battery pack that could power a radio on the go and didn’t weigh anywhere near the weight of my lead acid batteries. I have a couple 12V 14Ah batteries. 12 volts * 14 amp hours = 168…


DollarTree Dipole

A friend told me about some dipoles made from headphone cases from DollarTree. If you aren’t familiar with DollarTree it’s a dollar store where everything is $1. So I went over to my local DollarTree and bought a few of these headphones that come with a plastic case. I opened the package and removed the…


Man Portable Mag Loop Antenna

After seeing Julian’s (OH8STN) post about his DIY Man Portable Magnetic Loop Antenna I decided to build one for myself. Just a few parts were needed. Many of those parts you may have laying around already. This is actually a relatively simple build, and Julian already covered the build in detail on his site and…