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"VHF" redirects here. For the diseases, see Viral hemorrhagic fever. Very high frequency Frequency range 30 MHz to 300 MHz Wavelength range 10 to 1 m ITU radio bands 1 (ELF) 2 (SLF) 3 (ULF) 4 (VLF) 5 (LF) 6 (MF) 7 (HF) 8 (VHF) 9 (UHF) 10 (SHF) 11 (EHF) 12 (THF) EU / NATO / US ECM radio bands A B C D E F G H I J K L M N IEEE radio bands HF VHF UHF L S C X K u K K a V W mm Other TV and radio bands I II III IV V VI v t e VHF television antennas used for broadcast television reception. These six antennas are a type known as a Yagi antenna, which is widely used at VHF Very high frequency ( VHF ) is the ITU designation [1] for the range of radio frequency electromagnetic waves (radio waves) from 30 to 300 megahertz (MHz), with corresponding wavelengths of ten meters to one meter. Frequencies immediately below VHF are denoted high freq...

1 I am trying to install "choroplethr." I have read the following related-looking errors: https://askubuntu.com/questions/1057100/error-libudunits2-a-not-found-when-installing-ggraph-additional-error-objec Install udunits2 package for R3.3 Their recommendation is to install something I have already installed. I have libudunits2 installed in a standard location, with: $ sudo apt-get install libudunits2-dev Reading package lists... Done Building dependency tree Reading state information... Done libudunits2-dev is already the newest version (2.2.26-1). I can see headers: $ ll /usr/include/ | grep unit -rw-r--r-- 1 root root 39998 Jan 5 2018 udunits2.h -rw-r--r-- 1 root root 5195 Jan 5 2018 udunits.h However, on installation, I get this error: $ R R version 3.5.1 (...