There are
two items here, neatly assembled into a home-made box, with a
drop-down hinged lid, and a handle on top for easy transportation.
I imagine the previous owner used them in a caravan (or boat?)
perhaps hooked up to a long wire aerial (or whip in the case of
a boat)?
Powered from 12 volts, the pair consists of a DTR3 80 metre CW Receiver andTransmitter in the upper of the two units, and a TU2 aerial matching device with SWR and power meter in the lower unit.
The equipment was on the market a few years ago either in kit-form or already assembled from a small UK-based company.
UK stuff is entirely different from the more common Japanese black boxes and has a unique "made in a garage" look about it. This applies to most things electronic, whether they are heating controllers, washing machine electronics or escalator controllers (which I have recently begun to repair for some local lift maintenance companies. I don't mean to denigrate the quality of the things, it's just their looks. This also applies to Quad, Leak, Roberts and Hacker stuff. There's something unmistakably "British" about them all!
Another British piece
of amateur radio gear, this time based on valves rather than transistors..
This "transverter" represented a cheap way of getting
onto 2 meters as it merely upconverted the 10 metre range of a
standard HF transceiver to that VHF band. Admittedly one had to
provide a power supply and hide it away under the bench, but,
overall it cost a lot less than an equivalent Japanese black box
and provided increased output power over the latter, with its
Mullard QQV03-20A output valve.
As they used to say. "Why not make use of the high specifiaction of that really expensive transceiver on two meters?"
Although a good idea they didn't really catch on because the new Japanese stuff looked so good, and despite their astronomic prices and disgraceful "price fixing" sold well.
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receivers