[AMPS] high isolation amplifiers

[km1h@juno.com]

How wide band and how much isolation?
I have used preamps for about 15 years based upon the Anzac lossless
feedback circuit.
With a 2N5109 they have 9-10dB of gain from 1.8 to beyond 144MHz. Noise
figures are in the 1.5db range thru 6M, input and output return loss is
typically > 18dB and Pout  +19dBM or better.
They are used here as a Beverage preamp, preamp built in to various
TS-940's to improve upper band NF and a few other bench applications.

73  Carl   KM1H 

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