Very low frequency
The 3–30 kHz range of the electromagnetic spectrum
Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3–30 kHz, corresponding to wavelengths from 100 to 10 km, respectively. The band is also known as the myriameter band or myriameter wave as the wavelengths range from one to ten myriameters (an obsolete metric unit equal to 10 kilometers).
Nº Q549933 ★★
Uncommon · History
Very low frequency
The 3–30 kHz range of the electromagnetic spectrum
Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3–30 kHz, corresponding to wavelengths from 100 to 10 km, respectively. The band is also known as the myriameter band or myriameter wave as the wavelengths range from one to ten myriameters (an obsolete metric unit equal to 10 kilometers).
Last price
—
Floor price
—
7-day median
—
30-day sales
0
30-day range
—
In circulation
0
Price history
median
low – high
sales
No sales in this period
Show table
| Date | median | Low | High | sales |
|---|
Sales history
- Last sale
- —
- 30-day average
- —
- 30-day low
- —
- 30-day high
- —
- Sales 7d
- 0
- Sales 30d
- 0
No sales yet.
Anonymous sales: no buyer or seller shown. Figures count player-to-player sales only.
From Wikipedia
Very low frequency or VLF is the ITU designation for radio frequencies (RF) in the range of 3–30 kHz, corresponding to wavelengths from 100 to 10 km, respectively. The band is also known as the myriameter band or myriameter wave as the wavelengths range from one to ten myriameters (an obsolete metric unit equal to 10 kilometers). Due to its limited bandwidth, audio (voice) transmission is highly impractical in this band, and therefore only low-data-rate coded signals are used. The VLF band is used for a few radio navigation services, government time radio stations (broadcasting time signals to set radio clocks) and secure military communication. Since VLF waves can penetrate at least 40 meters (130 ft) into saltwater, they are used for military communication with submarines.
Text: Wikipédia, CC BY-SA 4.0. · Image: F1jmm - http://en.wikipedia.org/wiki/User:Heinz_it_up_ (Public domain) ·
Related cards
Super low frequency
The 30–300 Hz range of the electromagnetic spectrum
Nº Q621063 ★
Ultra high frequency
The 300–3000 MHz (or up to 1000 MHz, according to IEEE) range of the electromagnetic spectrum
Nº Q628096 ★★★
Ultra low frequency
The 300–3000 Hz range of the electromagnetic spectrum
Nº Q2488684 ★
Very high frequency
The 30–300 MHz range of the electromagnetic spectrum
Nº Q152466 ★★★
Low frequency
The 30–300 kHz range of the electromagnetic spectrum
Nº Q17156810 ★★
Super high frequency
The 3–30 GHz range of the electromagnetic spectrum
Nº Q189899 ★★