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Working radio, looks familiar

Posted: Tue Sep 25, 2012 11:54 pm
by Gob
Image

Re: Working radio, looks familiar

Posted: Tue Sep 25, 2012 11:58 pm
by Sean
But using a double-sided PCB is cheating really... ;)

Re: Working radio, looks familiar

Posted: Wed Sep 26, 2012 12:46 am
by The Hen
Mind the gap.

Re: Working radio, looks familiar

Posted: Wed Sep 26, 2012 11:35 am
by MajGenl.Meade
Thought tubes were a thing of the past?

Can it use a sub-woofer?

Does it only play underground music?

How many stations can you get?

I hope they don't mind the Doors?



(that's enough LU jokes - ed.)

Re: Working radio, looks familiar

Posted: Wed Sep 26, 2012 7:34 pm
by oldr_n_wsr
Nice. And there are no tubes in that design General. ;)

I have an old boom box in the garage that still works except on the FM band there are reflections of a local FM station that shows up every other frequency. The damn radio has a digital tuner and I can't "sub tune" to get the station I want (98.7) to come in. I need an old fashioned analog tuner. 98.7FM broadcasts the Jets games and this time of year I am usually in the yard doing something and not sitting in front of the TV watching the game. Gotta check some gar(b)age sales and see if I can find an old transistor radio.

Re: Working radio, looks familiar

Posted: Wed Sep 26, 2012 11:43 pm
by Sean
oldr_n_wsr wrote:Nice. And there are no tubes in that design General. ;)
Psst... The London Underground is also known as 'The Tube' oldr... 8-)

Re: Working radio, looks familiar

Posted: Thu Sep 27, 2012 12:08 am
by Gob
Image

The first diagrammatic map of London's rapid transit network was designed by Harry Beck in 1931. Beck was a London Underground employee who realised that because the railway ran mostly underground, the physical locations of the stations were irrelevant to the traveller wanting to know how to get to one station from another — only the topology of the railway mattered. This approach is similar to that of electrical circuit diagrams; while these were not the inspiration for Beck's maps, his colleagues pointed out the similarities and he once produced a joke map with the stations replaced by electrical circuit symbols and names, with terminology such as "bakelite" for the Bakerloo line.

To this end, Beck devised a simplified map, consisting of stations, straight line segments connecting them, and the River Thames; lines ran only vertically, horizontally, or on 45 degree diagonals. To make the map clearer and to emphasise connections, Beck differentiated between ordinary stations (marked just with tick marks) and interchange stations (marked with diamonds). London Underground was initially sceptical of his proposal — it was an uncommissioned spare-time project, and it was tentatively introduced to the public in a small pamphlet in 1933. It immediately became popular, and the Underground has used topological maps to illustrate the network ever since.

Despite the complexity of making the map, Beck was paid just five guineas for the work.[citation needed] After its initial success, he continued to design the Underground map until 1960, a single (and unpopular) 1939 edition by Hans Scheger being the exception. During this time, as well as accommodating new lines and stations, Beck continually altered the design, for example changing the interchange symbol from a diamond to a circle, as well as altering the line colours – the Central line from orange to red, and the Bakerloo line from red to brown. Beck's final design, in 1960, bears a strong resemblance to the modern-day map. Beck lived in Finchley and one of his maps is still preserved on the southbound platform at Finchley Central station on the Northern line.

Re: Working radio, looks familiar

Posted: Thu Sep 27, 2012 3:47 am
by dales
Gob wrote:
Image
Can I get to Paddington Station?

(or is the RF choke in the way?)

Re: Working radio, looks familiar

Posted: Fri Sep 28, 2012 5:15 pm
by oldr_n_wsr
Went right by me
:oops: