Friday, 6 February 2015

New proposed version of the Radiono TXRX

The Radiono TXRX is a fascinating design, using a bi-directional FET output mixer for RX & TX, driven by a couple of amplifiers one in each direction.

Here's a proposal using MMICs for the two amplifiers. It also has AGC on the audio side to give more "punch".

The input BPF is based on the WA4DSY design aid

Screen Shot 2015 02 07 at 17 45 11

and has a response like this:

Screen Shot 2015 02 07 at 17 45 23

Screen Shot 2015 02 20 at 18 14 00

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