![Guest post by Keith Thrower: Technical factors affecting CW radio communication in WW1, part 2 - Innovating in Combat Guest post by Keith Thrower: Technical factors affecting CW radio communication in WW1, part 2 - Innovating in Combat](http://blogs.mhs.ox.ac.uk/innovatingincombat/files/2014/06/Marconi-Short-distace-radio.jpg)
Guest post by Keith Thrower: Technical factors affecting CW radio communication in WW1, part 2 - Innovating in Combat
![A short history of Radio Communications Systems used by Australians in WW1 and WW2 and later. – Tecsun Radios Australia A short history of Radio Communications Systems used by Australians in WW1 and WW2 and later. – Tecsun Radios Australia](https://www.tecsunradios.com.au/store/wp-content/uploads/2021/04/A-short-history-of-Radio-Communications-Systems-used-by-Australians-in-WW1-and-WW2-and-later-2-1030x579.png)
A short history of Radio Communications Systems used by Australians in WW1 and WW2 and later. – Tecsun Radios Australia
![WW1: Germans generating electricity by pedal cycle for a field radio. The telephone remained the bas WW1: Germans generating electricity by pedal cycle for a field radio. The telephone remained the bas](https://cdn.imago-images.de/bild/st/0055838632/m.jpg)
WW1: Germans generating electricity by pedal cycle for a field radio. The telephone remained the bas
![Telephones were used extensively in WW1 because radio sets were large, heavy, expensive, in short supply, affected by weather, and could only be used for telegraph codes instead of voice communication. As Telephones were used extensively in WW1 because radio sets were large, heavy, expensive, in short supply, affected by weather, and could only be used for telegraph codes instead of voice communication. As](https://c8.alamy.com/comp/G16BYM/telephones-were-used-extensively-in-ww1-because-radio-sets-were-large-G16BYM.jpg)