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Old 23rd Aug 2021, 9:57 pm   #1
Ed_Dinning
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Default Wireless World communications receiver

Hi Folks, some months ago I was requested to supply more details of this set, I've managed to unearth my copies of the articles but they are a bit big to scan as they run from Jun 9th 1938 until part 25 in Sept 8th 1938. Worldradiohistory will be your best bet if you wish to read these. If I get a chance I'll try and post a scan of the complete set.
The full set of articles (author unknown) covers the spec, design and development of this very advanced set of the time which then may have been offered as a kit. I have such a set which appears to have been built from one of these kits, complete with front panel and it certainly worked well when a pal of mine had it about 10 years ago.
It looks as if it was aimed at the very well heeled home constructor who had an extensive workshop.

It has 8 wavebands spanning 5M to 2000M as well as variable selectivity and comprises the receiver unit and a power pack/ audio amp using PP PX4's

It was designed to go into a presumably home built cabinet.

When I get a chance I may well power it up again (I believe it has had modern caps etc fitted several years ago, but as I don't really have room for it I may offer it onthe forum

Cheers, Ed
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Old 24th Aug 2021, 7:54 am   #2
kellys_eye
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Default Re: Wireless World communications receiver

I've always been interested in the way contributors to Wireless World approached their designs and would very much like to see the results of such a build - I look forward to anything you can post on this radio with thanks.
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Old 24th Aug 2021, 9:50 am   #3
David G4EBT
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Default Re: Wireless World communications receiver

Quote:
Originally Posted by Ed_Dinning View Post
... they ran from Jun 9th 1938 until part 25 in Sept 8th 1938. Worldradiohistory will be your best bet if you wish to read these.

Cheers, Ed
Out of curiosity, I looked at 1938 Wireless World on the World Radio History archive.

No sign of the WW communications receiver articles.

Remarkable that the magazine started in 1911, but until 1913 was called 'The Marconigraph'. It became Wireless World in April 2013. Out of curiosity I looked up the magazines from June 1938 - September 1938. Curiously, there is only one magazine per month shown, the dates of which are June 2nd, July 7th, August 4th and Sept 9th. However, July is shown as 'Issue No 1 of that volume, August is shown as No 5, and September as No 9, which infers that WW came out weekly. (though by my reckoning, at one issue per week, June 2nd - Sept 9th would equate to 11 issues).

None of those contain any information about the WW 'communications receiver' that I can see. Just as puzzling - assuming it was a weekly publication - June 2nd to Sept 9th only spans 13 weeks so for there to be 25 articles there would have to have been two per week. I wonder if the communications receiver series of articles was a supplement?

The World Radio History link to Wireless World is here:

https://worldradiohistory.com/Wirele...d_Magazine.htm

Interesting to see that in 1913 there was an American edition, and also editions in Spanish and Russian.

Waffled and dribbled 'Confused', of Cottingham.
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Old 24th Aug 2021, 10:18 am   #4
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Default Re: Wireless World communications receiver

Didn't it stop being called Wireless World in 2013? Became Electronics and Wireless World or something like.
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Old 24th Aug 2021, 10:20 am   #5
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Default Re: Wireless World communications receiver

Quote:
Originally Posted by David G4EBT View Post
Out of curiosity, I looked at 1938 Wireless World on the World Radio History archive.

No sign of the WW communications receiver articles.
Part of a long running series:

https://worldradiohistory.com/hd2/ID...arch=%22ef8%22

Lawrence.
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Old 24th Aug 2021, 10:31 am   #6
hilitevr
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Default Re: Wireless World communications receiver

Hi David

Look again, its all there, circuits chassis pictures, everything.
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Old 24th Aug 2021, 1:47 pm   #7
David G4EBT
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Default Re: Wireless World communications receiver

Ooops - although only the first issue of the month is mentioned in the WRH index, it was indeed a weekly magazine, but I hadn't realised that if I'd scrolled down, all of each month's issues are there.

Ho hum - I'll get mi coat.
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Old 24th Aug 2021, 8:39 pm   #8
Ed_Dinning
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Default Re: Wireless World communications receiver

Hi Folks, a picture of the magnificent beast with 13 valves.
My version is complete with the front panel and knobs, it originally came from the Glasgow area

Ed
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Old 6th Sep 2021, 9:26 pm   #9
Ed_Dinning
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Default Re: Wireless World communications receiver

Hi Folks, some further pictures of this magnificent set and its separate PSU.
It was recapped about 20 years ago and worked well then.
I believe it was built from a kit by a gent in Glasgow just prior to WW2 and is complete with the correct front panel, knobs etc.
It will need a big cabinet to house it, but probably looks better "naked"
Coils are similar to Wearite types but are the ones specified; has anyone any idea of the price of the kit in 1938?

IF's are the types specified and have the special coupling winding's with variable selectivity

The WW article goes into great detail over the choice of valves as being the best available at the time. Mullard EF series (one with Ct base, the rest octal), Then a few Marconi KT series types

Ed
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Old 19th Oct 2021, 8:39 pm   #10
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Default Re: Wireless World communications receiver

Quote:
Originally Posted by Ed_Dinning View Post
The full set of articles (author unknown) covers the spec, design and development of this very advanced set of the time
My money's on WT Cocking, especially since other articles by him seem to be absent whilst the receiver is presented.
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Old 19th Oct 2021, 9:24 pm   #11
Radio1950
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Default Re: Wireless World communications receiver

Gee, I bet that receiver cost a few quid, even as a kit.
Looking forward to your review.
Thanks for posting.
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Old 20th Oct 2021, 8:08 pm   #12
Ed_Dinning
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Default Re: Wireless World communications receiver

Hi Radio, I bet it would have been a great set for use in Australia in those days. With a good aerial there would have been a great many stations to receive.

Ed
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Old 23rd Oct 2021, 3:31 pm   #13
roadster541
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Default Re: Wireless World communications receiver

On the first page of episode 1 of the "How to design a receiver" series, there is a photo of two gents studying a drawing, one or both may be the authors(s) of the series of articles.
I don't know what W T Cocking looked like.
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