Figure 2.3.2. Schematic diagram of NIMBUS satellite data transfer (Source)
As indicated in the diagram, NIMBUS images were available to anyone with a suitable decoder, and the NASA web page here: NASA source reports the uses to which European meteorological agencies put the data. As with ESSA data, amateurs could also gain access to the images. This photograph from the Baltimore Sun of May 13 1968 shows a Scottish amateur meteorologist’s set up, and the image he has received can be seen on the cylinder (figure 2.3.3). It’s worth comparing that with the ‘official set up of an APT receiver in figure 2.3.4.