#e70bs

I needed a slightly more powerful dummy load than the one I built previously (you can check it out here: https://techestigate.com/250w-rf-dummy-load/). This project focuses on building a high-power 50 Ohm RF dummy load. As usual, I tried to reuse as many parts as I already had on hand, although I still needed to purchase non-inductive resistors. I picked up four 50 Ω, 250 W resistors on eBay for…

How it started My love for technology and electronics eventually led me to Amateur Radio, which is the beginning of this article. Long story short, I got my license and call sign E70BS, purchased my first rig (Yaesu FT991A), and needed a PSU. So I started designing Linear PSU for Radio. Computer PSU for HAM Radio At first, I used a Chieftec computer PSU declared at 40 Amps on a 12V Rail. I…

250 W RF Dummy Load

Since I got into the HAM radio hobby, I got a need for an artificial load, also called a Dummy Load. It is basically a high-power resistor that should have the same impedance (50 Ohm) in a wide frequency range. My current rig has a power output of 100W so I targeted something like that. I purchased one RFP250N50 on eBay for around 6 Euros with shipping, but they are available at many online…

250 W RF Dummy Load

Since I got into the HAM radio hobby, I got a need for an artificial load, also called a Dummy Load. It is basically a high-power resistor that should have the same impedance (50 Ohm) in a wide frequency range. My current rig has a power output of 100W so I targeted something like that. I purchased one RFP250N50 on eBay for around 6 Euros with shipping, but they are available at many online…