Old technical magazines - free download

Makes me think about the Satellite TV mags I have knocking around, wondering if I should scan those and post on here now that there are no legal concerns since they went belly up
 
Excellent site!

Wireless World too. February 1945 has Arthur C Clarke's ideas for geostationary satellites.

Nostalgia - Must see if they have the early 1960's edition for the stereo FM radio I made from a design in there. Didn't use 10.7 MHz IF transformers - I remember winding ferrite rings to I think 100KHz instead.
 
Llew said:
Nostalgia - Must see if they have the early 1960's edition for the stereo FM radio I made from a design in there. Didn't use 10.7 MHz IF transformers - I remember winding ferrite rings to I think 100KHz instead.
Click to expand...
My memory failed me. Wasn't a stereo radio but an FM Tuner. 130 kHz IF (or kc/s those days)

Had three switched crystals that gave me BBC's Home, Light and Third stations - Radio 4, 2 and 3 now :)

Unfortunately the available crystals were for tuning to the Wrotham transmitter, so I needed a good outside aerial where I was (60 miles away).

A bit basic- looking to say the least, but not needing alignment was a bonus.


FM Tuner.webp
 
My first foray into Amateur Radio was building a PW "Direct Conversion SSB Valve Rx for 80m" and a Valve PSU, when I was 13.

Great bit of kit - dead simple, robust and quite stable, all things considered. The thing had quite a large and bright red "On" light, so it was hard to conceal my late-night SWLing from mater and pater - bedroom door had a pane of glass above it!

Later, as Marconi apprentices, we became sniffy about PW and swore by the rather high-brow Elektor magazine.
 
I made a couple of short wave receivers using plug-in Denco coils. I still have one in the shed.
 
Last edited:
It was a valve - type - socket but everything under the case was semiconductor.

Two/three windings differentiated the application for valve/transistor.

I'll have a look tomorrow, see if one or both are still there.
 
Last edited:
And one of them remain in the shed, can't find the damn coils though.

Pictures later, once I've moved the spider nests to a new home.
 
Back
Top