The center frequency wavelengths of differing GPR antennas and the wavelength changes in material with differing relative dielectric permittivities (RDP):
| Antenna Center Frequency (MHz) | Wavelength of Center Frequency in air(meters) | Center Frequency wavelength in a medium with RDP=5 (meters) | Center Frequency wavelength in a medium with RDP=15(meters) | Center Frequency wavelength in a medium with RDP=25(meters) |
| 1000 | 0.3 | 0.13 | 0.08 | 0.06 |
| 900 | 0.33 | 0.15 | 0.09 | 0.07 |
| 500 | 0.6 | 0.27 | 0.15 | 0.12 |
| 300 | 1 | 0.45 | 0.26 | 0.2 |
| 120 | 2.5 | 1.12 | 0.65 | 0.5 |
| 100 | 3 | 1.34 | 0.77 | 0.6 |
| 80 | 3.75 | 1.68 | 0.97 | 0.75 |
| 40 | 7.5 | 3.35 | 1.94 | 1.5 |
| 32 | 9.38 | 4.19 | 2.42 | 1.88 |
| 20 | 15 | 6.71 | 3.87 | 3 |
| 10 | 30 | 13.42 | 7.75 | 6 |