Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Introductions Welcome to the DIYaudio Community. Introduce yourself here so we can get to know you better!

Hi from Gold Coast, Australia
Hi from Gold Coast, Australia
Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Thread Tools Search this Thread
Old 15th September 2004, 07:31 AM   #1
Jack Whittaker is offline Jack Whittaker  Australia
diyAudio Member
Join Date: Feb 2004
Location: Northern Gold Coast, Queensalnd, Australia
Default Hi from Gold Coast, Australia

Greetings to all from Jack Whittaker

I guess it is appropriate that I should make some comments of introduction about my hobby interests and background. My wife and I live by the sea on the Gold Coast in Australia. I am a builder and not professionally in electronics.
I think I am only 20 but my hair has changed colour and got as mite thinner.

I sat for my Amateur Radio Licence in 1947 in New Zealand. I had graduated from crystal sets through to building a ham band communication receiver of considerable complexity by that time, I held the licence ZL1ACA for some 50 years. I have had the call-sign VK4CGO in Australia also for some years.
My fascination with radio and “ home brewing” remains alive and active although I have not been actively on HF ham bands for several years or have livened up the iambic keyer. I have always gained more pleasure from building my own equipment rather than simply becoming a user of commercially made equipment, from crystal sets to tubes, with a brief spell using transistors and IC s . I still like using the tubes / valves.

I love building things –“rolling my own” - creating projects from products of my imagination - which does not always follow the entirely orthodox ideas.
Instead of hf , SSB and ham radio construction projects, I have switched back to the Audio part of the spectrum, building amplifiers of several configurations in the old style---- push-pull 6V6, EL37A, 6A3 etc of varying circuitry – triodes to ultra linear.

I have indeed been very fortunate in having the vital transformers made specially for the purpose of my building projects by a man with a lifetime of experience and knowledge in this field. The success of these amplifiers really does depend on these transformers and I have been lucky indeed. Bill still expertly does the finest and most intricate work and is now 90 years old !!! Bill is most remarkable and lives in New Zealand --- a great guy indeed.

I have just completed building a very successful stereo amp using only 6 tubes.
The twin triode 6336A tubes in the output have turned out very well indeed. This has followed a few experimental hasty haywire lash ups, as I had very little data on these
voltage control tubes. I am running a very low HT voltage but with quite high current / low impedance and it works really well. Special transformers were of course needed and made for me by Bill.

What I need now is a small quiet running axial fan to keep the tubes cool, AND the special cooling devices which I have vaguely heard about. When air temps reach into the 30s C, I fear the 6336As would destruct . They would be distressed without cooling of some form in almost any conditions.
Does any one know where I could obtain these cooling devices?

I can patch in a copy of the story on my earlier radio building if anyone is interested.

All the best Jack
  Reply With Quote
Old 15th September 2004, 08:24 AM   #2
Geek is offline Geek
diyAudio Member
Geek's Avatar
Join Date: Sep 2004
Greetz Jack!

Always good to see another tubehead arrive
  Reply With Quote


Hi from Gold Coast, AustraliaHide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Hello from west coast of Scotland Davy Introductions 1 13th September 2006 04:24 PM
Aleph 3 - where to buy heatsinks on West Coast USA macka Pass Labs 6 26th May 2006 08:01 AM
DIY Projector Setup (Gold Coast, Australia) Reason Swap Meet 1 28th January 2006 05:40 AM
hello from west coast UAS guitarmaker Introductions 1 31st December 2004 01:17 PM
hello from the East Coast :) maestro00 Introductions 4 4th November 2002 11:29 AM

New To Site? Need Help?

All times are GMT. The time now is 06:14 AM.

Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio