Radio transmission and reception. Electromagnetic waves come in contact with antenna. Animation shows electromagnetic waves passing. A tuning coil is placed in antenna for better connectivity. This process adjusts antenna frequency. Diagram shows the tuning coil with a pendulum. The dots traveling on circuit show the frequency of reception. Diagram shows water line and the pebble. The filament circuit heats up. Incoming waves in the grid. Man holds torch in hand and opens it. Coil is placed on each end of magnet. Sound waves reduced from entering the diaphragm.
This historic stock footage available in HD video. View pricing below video player.
| Type | Size | Price (USD) Comprehensive All Media License |
Price (USD) Digital-Only License |
|---|---|---|---|
| HD Master, Broadcast-ready (1920x1080, unmarked) | 8250 MB | $295.00 | $79.00 |
| HD Screener (1920x1080, full-res with timecode) | 8250 MB | FREE or $4 (see below) | FREE or $4 (see below) |
| Proxy (320x240, low-resolution, watermarked) | 133 MB | FREE or $4 (see below) | FREE or $4 (see below) |
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