Dallas Makerspace Show and Tell - August 2016

[zmetzing]

Most of this construction has been in my home lab, but I did do some work at DMS, so I think it counts.

Building a 2m LNA

I’ve been building and debugging a 2m LNA (low-noise amplifier) from this website: http://www.ham-radio.com/n6ca/50MHz/50appnotes/U310.html While it does work, it only gives me about 6-7dB of gain. This is far short of the 12-16dB claimed by the author and the datasheet, respectively. Once I figure out where my missing gain went, I’ll put it on a noise figure (NF) meter and see how close to 1-1.5dB NF it turned out to be. [image] Why, yes, that is a @Fred_Miller project box!