WITF

Background
WITF is a PBS affiliate located in Harrisburg, Lancaster, and York, Pennsylvania.

1st Logo (1987-1994)
Visuals: There is a red dot against a white background. The text "WITF" in black flies in towards the camera at a fast pace, with the "I" underneath the dot. "HARRISBURG" and "PRESENTS" fade in below.

Technique: The logo flying in.

Audio: An upbeat synth-pop tune.

Availability: At the start of Big Comfy Couch episodes from this era on PBS.

2nd Logo (1990-1996)
Visuals: On a background of diagonal, green, and stripes, we see the text "WITF 33 HARRISBURG" on a  diamond in the far right.

Technique: None.

Audio: None.

Availability: In tandem with the 1st and 3rd logos, was seen on Computer Chronicles, often replacing the KCSM logo. (There may be episodes that have both the KCSM and WITF logos at the start of the show, but in-credit texts were at the end)

3rd Logo (1994-1998)
Visuals: There is the WITF logo, but colored and with a brigher red dot. It seems to be against a plain black background, but a spotlight appears to shine on the logo, and then moving to the left. "H A R R I S B U R G" fades in below.

Technique: The spotlight shining on the logo.

Audio: A mellow piano and saxophone tune, somewhat in the style of Kenny G.

Availability: At the start of Big Comfy Couch episodes on PBS from this era.

4th Logo (1998-2000)
Visuals: Against a black background, a picture of the Earth zooms away from the viewer, rotating as it does so, revealing the WITF logo in steel gray and dotting the "I". A light passes below as "HARRISBURG" fades in.

Technique: The Earth zooming out, the light passing below.

Audio: A quick synth-techno tune.

Availability: Like the previous logo, this is also seen at the end of Big Comfy Couch episodes on PBS from this era (Nashville Public TV now produces the show in the U.S.).

5th Logo (2002-2005)
Visuals: Unknown

Technique: Unknown

Audio: Unknown

Availability: Unknown

6th Logo (November 18, 2005-July 15, 2010)
Visuals: Unknown

Technique: Unknown

Audio: Unknown

Availability: Unknown

7th Logo (July 16, 2010-2012)
Visuals: Unknown

Technique: Unknown

Audio: Unknown

Availability: Unknown