UK Vintage Radio Repair and Restoration Powered By Google Custom Search Vintage Radio Service Data

Go Back   UK Vintage Radio Repair and Restoration Discussion Forum > Other Discussions > Homebrew Equipment

Notices

Homebrew Equipment A place to show, design and discuss the weird and wonderful electronic creations from the hands of individual members.

Reply
 
Thread Tools
Old 30th Mar 2020, 9:50 pm   #1
Rhombic
Triode
 
Join Date: Jun 2013
Location: Var, France
Posts: 12
Default

Can anyone put flesh on the bones of this (probably 1920's) photo? It is part of a collection of old photos (not just radio pix) in the archive of Eastbourne Local History Society.

The coil and the capacitor (he would no doubt have called the latter a 'condenser') are easily recognised. I understand that the rectangular box is likely to have been a battery for the valve filaments.

I presume the set would have been for medium wave reception. In the collection there is a shot of a circuit diagram from a 1924 issue of 'Modern Wireless'

The listener was almost certainly a member of the Woodland family of Eastbourne, England. I don't believe that he ever held a transmitting licence. However, another pic shows the same man, now older. In the background can be seen an assortment of various aerials a veritable aerial farm.

RH Woodland and Sons were cabinet-makers that also produced invalid chairs.

Thanks in advance for any comments.

813itF
Attached Thumbnails
Click image for larger version

Name:	B10e.jpeg
Views:	321
Size:	126.6 KB
ID:	201856  
Rhombic is offline   Reply With Quote
Old 31st Mar 2020, 12:02 am   #2
PJL
Dekatron
 
Join Date: Sep 2005
Location: Seaford, East Sussex, UK.
Posts: 4,679
Default Re: Picture of early home-brew Receiver

There are two 'pip-top' valves that would be from around 1923-5, the nearest one could be a Cossor P1, http://www.r-type.org/exhib/aaj0002.htm. Operating a set with early 'bright emitter' valves outside would be quite risky as they used a rheostat to adjust the brightness by eye and would burn out if set too high.
PJL is offline   Reply With Quote
Old 31st Mar 2020, 10:53 am   #3
ms660
Dekatron
 
ms660's Avatar
 
Join Date: Apr 2011
Location: Cornwall, UK.
Posts: 9,172
Default Re: Picture of early home-brew Receiver

Quote:
Originally Posted by 813intheFinal View Post
In the collection there is a shot of a circuit diagram from a 1924 issue of 'Modern Wireless'
Modern Wireless archives, all months from 1924 appear to there:

https://www.americanradiohistory.com...n-Wireless.htm

Lawrence.
ms660 is online now   Reply With Quote
Old 31st Mar 2020, 2:27 pm   #4
AC/HL
Moderator
 
AC/HL's Avatar
 
Join Date: Nov 2003
Location: Heckmondwike, West Yorkshire, UK.
Posts: 8,421
Default Re: Picture of early home-brew Receiver

Back then MW was known as short wave. What we now call short wave was thought useless by the professionals until Amateurs proved otherwise.
__________________
Bill, BVWS member
AC/HL is online now   Reply With Quote
Old 1st Apr 2020, 1:01 am   #5
Silicon
Octode
 
Join Date: Jun 2007
Location: Coulsdon, London, UK.
Posts: 1,209
Default Re: Picture of early home-brew Receiver

The battery with the leather strap could be a 6 Volt or possibly a 12 Volt lead acid battery.

Is there any chance it could be a NiFe battery?

The vertical device could be a variometer variable inductor.
Silicon is offline   Reply With Quote
Old 1st Apr 2020, 10:29 am   #6
Silicon
Octode
 
Join Date: Jun 2007
Location: Coulsdon, London, UK.
Posts: 1,209
Default Re: Picture of early home-brew Receiver

The battery looks like an Exide unspillable accumulator.
Silicon is offline   Reply With Quote
Old 1st Apr 2020, 10:42 am   #7
Aub
Octode
 
Aub's Avatar
 
Join Date: Mar 2005
Location: Nuneaton, Warwickshire, UK.
Posts: 1,052
Default Re: Picture of early home-brew Receiver

Looks like it could drive two sets of headphones.
__________________
Ignorance of The Law is No Excuse - but I didnt know that!
Aub is offline   Reply With Quote
Old 15th Apr 2020, 9:26 pm   #8
Rhombic
Triode
 
Join Date: Jun 2013
Location: Var, France
Posts: 12
Default Re: Picture of early home-brew Receiver

Apologies for not having replied sooner.
Very many thanks for the helpful replies ... I was particularly interested to see that the back numbers of Modern Wireless are available online.
I didn't know about the 'pip-top' valves and the attendant dangers.
All very good indeed.
de 8itF
Rhombic is offline   Reply With Quote
Reply

Thread Tools



All times are GMT +1. The time now is 1:34 pm.


All information and advice on this forum is subject to the WARNING AND DISCLAIMER located at https://www.vintage-radio.net/rules.html.
Failure to heed this warning may result in death or serious injury to yourself and/or others.


Powered by vBulletin®
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
Copyright ©2002 - 2020, Paul Stenning.