On behalf of the widow of a colleague who is downsizing, there is a Murphy B40 naval short wave receiver free to a good home. ‘Admiralty Pattern 57140x.’ Standard in surface ships and submarines from 1953 to 1956. It weighs 46kg and worked the last time it was switched on, some years ago.
The Murphy B40 Series of Naval Communications Receivers are receivers for shipboard use (British Navy, submarine), coverage 640 kHz to 30600 kHz in five ranges, IF-selectivity 1kHz/3kHz/8kHz, BFO. Also fix-frequency crystal-option. Also referred as “lighthouse- or tower-receiver”.
Well is circularly polarized so it can only really be for one thing. Can you say Sputnik ?
CPSARC new comp yagi.... fries everything in its path...
Good for interstellar comps as well.... 😂😂😂
So, it's not an antenna for a death ray? Powered by Italian watts... ?
Helical suggests something that’s likely to rotate and not be perfectly aligned on the far end. Satellite is the obvious one. It’s an end fire with reflector so probably relatively high frequency rather than using a coil as a shorter than quarter wavelength vertical.
The one thing that makes me think not satellite is the support cables look like it only elevates to around 60 degrees max. So on that basis, possibly vhf to planes, particularly military jets as they wouldn’t always be flying level.
Eme or inter planet probes?
Pretty sure it's one of these. They were a very common antenna system in the 70's and 80's.
bloody contesters, how am I supposed to talk about the colour of my coax when they are shouting over the top of everyone? 10Khz wide you know, they don't listen, and what's the point? you're 5/9 all you details again. Why cant they give proper signal reports and why cant they just use certain portions of the band.........😭😭well there's nee one on now so knock yourselves out 🙂