I don't know which GaAsFET they used, but the 2SC2498 or 2SC2570A are rated at 1 dB of noise or less and they are relatively cheap. The more expensive replacement type (i.e. ECG) are ECG10 or SK9139.

Glen, K9STH

Website: http://k9sth.com

--- On Tue, 12/2/08, Dave hartzell hartzell@gmail.com wrote:

From: Dave hartzell hartzell@gmail.com

Does anyone know what the Landwehr pre-amps used for the GaAsFET?

I don't see any markings on the device, and one of the former resellers (Radio Dan) doesn't know either...