Earlier this year I designed and built this gadget to be the only tool required to properly align the Oscillator, IF & RF sections and also test the sensitivity of transistor radios. All the circuitry and mechanical construction is documented. I have not persuaded anyone to build it as a kit...yet, it is a bit time consuming to make as a one off.
http://worldphaco.com/uploads/The__H...nsanalyser.pdf