EME103 23cm Pre-Amplifier Kit
The EME103 Kit was one of the most popular Kits that we ever sold. The first verson of this Kit was produced in the mid 1990's and continued until around March 2011. The preamp used the Mitsubishi MGF1302 GasFET and was able to be used with minor changes on both the 13 and 23cm bands. There were a few changes in late Kits around 2010 due to the MGF1302 becoming obsolete, so the Kit was then sold with the NEC NE3210S01 and some small improvements were made to the input inductor.
For a complete description of the Kit before it was discontinued please download the Complete EME103 KIT Notes
2/ Any instability problems are usually caused by the RF connections in and out of the board. Only connectors like SMA can be used and have to be soldered very directly to the board. Mounting the PC board inside an enclosure can also cause instability as they can act like Microwave Waveguides. Enclosure sizes that are close to a Waveguide size for 1200 to 2400MHz should be avoided.