Way back when I was first licenced for VHF/UHF only in early 1967 as G8AWG, I used to operate under supervision at the HF station of Bill Honeywill
G4PJ in Salcombe on 160 and 80m. Bill Had an old KW Viceroy TX and a Codar AT5, which was "state of the art" in its day.
The AT5 was a small valve TX producing around 10W on 160m and 80m. Using the AT5 we could work right up the English Channel in daylight on AM and CW over a mostly sea path. I noticed
a page about the AT5 on the W3EEE website and it took me back 45 years.
There was a companion RX called the T28 which I owned at one time - I got it as a university prize for writing one of the better final year theses - which was made using a couple of Mullard modules. The T28 was nothing special, but did make a useful tunable IF for my 2m converter used to copy signals from Oscar 6 and Oscar 7 amateur satellites.
Nowadays in a volume less than half that of these rigs one can have a complete multi-mode HF-VHF-UHF transceiver with performance far exceeding the AT5 and T28. We forget how much our hobby has changed.
