British Wartime Periscope: a Peek Into the Past
hackaday.com/2025/04/22/britis…
British Wartime Periscope: A Peek Into The Past
We all know periscopes serve for observation where there’s no direct line-of-sight, but did you know they can allow you to peer through history? That’s what [msylvain59] documented when he p…Hackaday
Radio Free Trumpistan
in reply to hackaday • •Your page says to login or leave email address in order to comment, so I'll comment here. "Built like a tank" was the rule of thumb for that day, and designating something as "portable" didn't necessarily mean it wasn't heavy. I have 2 portable field radios from that era and the batteries alone rendered one of them quite heavy as it demanded a much higher voltage than one expects out of today's non-lithium batteries, so likely wet cells were used. And then there was the milspec that the 399A/URR military receiver was required to meet and that doesn't include the panscope one attached to it. And they used mechanics to filter radio frequencies. The mechanical RF filter was legendary.
hackaday
in reply to Radio Free Trumpistan • • •@claralistensprechen5th Nice insight!
Heavy duty often meant heavy quite literally, too.
Funnily enough it also recalls us of the "Pocket" Oxford English Dictionary, which was anything but...
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Radio Free Trumpistan
in reply to hackaday • •Absolutely. Thanks!