11. Mid-frequency range notes could be recorded, but very low and very high frequencies could not. 12. The circuit was described as having very high frequency stability and very pure sinusoidal output. 13. At very high frequencies ( far-ultraviolet and X-ray ) interstellar hydrogen gas becomes a significant absorber. 14. Haplogroup O2 in Taiwan aborigines is almost completely non-existent, but they exhibit very high frequencies of O1. 15. Coast Guard radio stations cover a wide geographical area using very high frequency and high frequency radios. 16. You have measured a very high frequency . 17. These units were equipped with " Veeps " : jeeps having Very High Frequency SCR-193 crystal sets. 18. The primary ground stations are known as VORs, for " very high frequency omnidirectional range station ." 19. Signal amplifiers using tubes are capable of very high frequency response ranges up to radio frequency. 20. This experiment produced and received what are now called radio waves in the very high frequency range.
