Has anyone managed to install tensorflow ?

I am running FriendlyDesktop, on a NanoPC T4 and lsb_release -a shows:
Distributor ID: Ubuntu
Description: Ubuntu 18.04.2 LTS
Release: 18.04
Codename: bionic

I have build a virtual environment for python 3.6 and have the latest version of pip (19.x) but when I try to install tensorflow, I get the following:

ERROR: Could not find a version that satisfies the requirement tensorflow (from versions: none)
ERROR: No matching distribution found for tensorflow

Reading about this particular error, it seems to come up when the CPU architecture is incompatible (i.e., on windows 32 vs 64 bit OS) but I assumed that all Ubuntu derived distros would be equivalent for tensorflow.