List of Technical Reviews
Tricks of the TradeThe articles linked from this box were first published in Signal, the quarterly publication of The Vintage and Military Amateur Radio Society. It is reproduced here with kind permission from VMARS, which exists to help and support Radio Amateurs and Shortwave Listeners who wish to restore and operate vintage military or commercial radio equipment on the amateur bands. See "About VMARS" on their web site for more information. Articles featuring drives: Tuning fork and crystal drives, by David Porter. (0.5MB PDF file) VFO-4 and HGM-1 drives, by David Porter. (2MB PDF file) Articles featuring combiners:- Combiners used for Aspidistra and OSE5 by David Porter and Andy Matheson. (0.27MB PDF file) Combining techniques, by David Porter. (0.3MB PDF file) More on combining AM transmitters, by David Porter. (0.3MB PDF file) Final "Tricks of the Trade" article on AM transmitters, combiners and history of OSE transmitting stations, by David Porter. (1.5MB PDF file) First part of a detailed description of the Marconi Wireless Telegraph Company MWT BD228A medium wave transmitter, as used by the BBC at Brookmans Park. Second part of the above article.
New: A "Tricks of the Trade" article from
Signal Issue 20 which
provides a glimpse of people in the Broadcast Division of Marconi
Communications Systems Ltd., along with an outline of their considerable
achievements. |
The PAL Receiver:
developments and progress
PROC. IEE, Vol. 125, No.6, June 1978
The paper describes how in 1967 colour television was promoted in the United
KIngdom by all interested parties and it describes the public's enthusiastic
response during the first nine years of colour transmission. It recalls the
American and French colour-system experiments and the subsequent PAL colour
system that Dr. Walter Bruch introduced. Examples of engineering
development in colour receivers are given, with descriptions of colour
tubes, components and circuit techniques.
This paper, co-authored by G.H. Sturge and
P.A. Tingey, is not published on this web site, but please
email for more information.
Chris Gardiner, who was in Engineering Division from 1963 until 1969, has copies of Technical Instructions S3 and S10, Audio Frequency Amplifiers and Audio Frequency Transistor Amplifiers respectively. He also has copies of S D Berry's Monographs on Transistor Audio amplifiers. If anyone has an interest in any particular section and has difficulty finding other copies he is happy to scan it and post in an appropriate place. Click the link above to send an email that will be forwarded to Chris.
Vintage BBC Transmitters - 2LO and AP
Development of the BBC AM Transmitter Network
Updated to Rev.6a 28/5/07 with some revised text and additions
to the Appendix listing of the 1926 Geneva Plan and 1929 Prague Plan.
This is a document compiled by Clive McCarthy from various public
domain sources which are duly acknowledged at the end of the article.
It is quite possibly the most thorough single document summarising the
development of the network with regard to frequencies, powers and service areas.
Clive worked as an engineer at Television Centre and produced this document as a
result of personal interest. It is believed to be correct but accuracy is
not guaranteed. Please note that
BBC Research & Development is
the ultimate authority on BBC service planning matters.
Early development of the BBC’s colour television service.
An
Introduction to Broadcast Transmission Technology
This is a
"Ladybird Guide" for people who don't necessarily have prior technical
knowledge.
There are more technical articles in the Designs Department section.