| 12345678910111213141516171819202122232425 |
- #!/usr/bin/env python3
- import sys
- try:
- factor = 0.97
- lowerMhz = float(sys.argv[1])
- upperMhz = float(sys.argv[2])
- if len(sys.argv) >= 4:
- factor = float(sys.argv[3])
- except (IndexError, ValueError) as e:
- print("Usage: %s LOWERMHZ UPPERMHZ [FACTOR]" % sys.argv[0])
- sys.exit(1)
- centerMhz = (upperMhz - lowerMhz) / 2 + lowerMhz
- centerHz = centerMhz * 1000000
- c = 299792458 # m/sec
- lambd = (float(c) / centerHz) * factor
- lambd4 = lambd / 4
- lambd4mm = lambd4 * 1000
- print("%.1f < %.1f < %.1f (* %.2f) ==> lambda/4 = %.1f mm" %\
- (lowerMhz, centerMhz, upperMhz, factor, lambd4mm))
|
