100 KHz MF amplifier with dual gate MOSS-Fett

Original design by OZ8GG.

After using this in a homemade 2 meter SSB contest transceiver in many years, with a fine result, I now give it a try on 50 MHz with some "mods".

100KHz_MFamp.jpg (76283 byte) CLICK for full size picture

Done in EAGLE4.16:

MODS: Gate and Source is lifted from ground to improve AGC, + 1.7 V with light-diode after an idé in 
EXPERIMENTAL METHODS IN RF-DESIGN, 2003.

The Coil is NEOSID: 600 uH 

Gain: 100 db

Working perfect, no instability measured.