Intertel

Background
Intertel was an agreement made by the public broadcasters of the English speaking world (CBC, the Australian ABC, the BBC, and NET) to share their programs. Aside from that, not much is known about it.

1st Logo (1964)
Visuals: On a space background, there is a model of the Earth with a symbol similar to the BBC Television Service "Batwings" ident. The white word "INTERTEL" then zooms in, and the white text "Times New Roman" finally fades in.

Technique: Possibly a mix of cel animation and model work.

Audio: An orchestral fanfare that becomes dramatic once the text zooms in.

Availability: So far, it was only seen on Homosexuality in Men and Women.

2nd Logo (1971)
Visuals: On a black background, we see the names of the English-speaking public broadcasters in white. They then form a multicoloured line (CBC is, the ABC is , the BBC is , and NET is white). The white text "Impact" also appears and the line forms a broken rectangle. A white replica of the Earth then appears, and the white text "Helvetica" finally forms.

Technique: Also cel animation.

Audio: A squeaky synthesized and guitar fanfare, composed by John Baker of the BBC Radiophonic Workshop

Availability: So far, it was only seen on an episode of Science and Conscience titled "A Matter of Life and Death".