Casualty 4 Phaser

Here’s interesting phaseshifter idea I found over at Circuit Workshop. The Casualty 4 is an OTA based phase shifter with two modulated stages and two fixed phase shift stages. This looks like a pretty interesting project.

Looks like you can fit this in a B sized box but there doesn’t seem to be enough room left over for a battery.

Here’s a picture of the populated board.