THE RADIO TECHIE PAGE

First, for an excellent description of the various building blocks of radio circuitry, seek out the Vintage Radio Repair and Restoration web page.

Meanwhile, heres a couple of techie items :-

Alignment During alignment it is necessary to connect a signal generator to the aerial input of the radio. However, a "dummy" aerial circuit should be placed between the signal generator and the aerial input. In the case of frame aerials, which also form part of the aerial input tuned circuit, a slightly different approach is required.
Synchrodyne and
Homodyne
These are systems of demodulation for amplitude-modulated signals. Not a popular system but an alternative to the more popular T.R.F. and superhetrodyne systems.
4-Tube Concept In 1939, Philips publicised research on a new 'loktal' tube, finally producing the series in 1941. You can find out more on Clement L. Goossens's "Sound In It" site.

 


Page copyright
J.Evans 2000/2001
CLICK HERE TO RETURN TO
THE MAIN PAGE
Last updated
15th September 2001