Tube Radio Kit - diyAudio
Go Back   Home > Forums > Amplifiers > Tubes / Valves

Tubes / Valves All about our sweet vacuum tubes :) Threads about Musical Instrument Amps of all kinds should be in the Instruments & Amps forum

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
Reply
 
Thread Tools Search this Thread
Old 26th May 2004, 03:29 AM   #1
diyAudio Member
 
Join Date: Apr 2004
Location: Milky Way
Default Tube Radio Kit

i know this is an amp forum, but are there any tube radio kits available?
  Reply With Quote
Old 26th May 2004, 03:42 AM   #2
diyAudio Member
 
Join Date: Apr 2004
Location: Monroe Township, NJ
AES (www.tubesandmore.com) has some battery powered stuff.

How sophisticated a circuit do wish to try? Kits for tube superhet circuits are a thing of the past.
__________________
Eli D.
  Reply With Quote
Old 26th May 2004, 01:31 PM   #3
diyAudio Member
 
Join Date: Apr 2004
Location: Milky Way
Just an AM/FM radio, as simple as possible i suppose
  Reply With Quote
Old 26th May 2004, 03:15 PM   #4
dhaen is offline dhaen  Europe
diyAudio Moderator Emeritus
 
dhaen's Avatar
 
Join Date: Jun 2002
Location: U.K.
I think it is very unlikely. An AM/FM radio would need more that 14 tuned circuits and transformers - lots of precision winding, which is a lost DIY art, and a commercial folly. Such a radio would have been an advanced project to build.
If you are determined and experienced, maybe you could do it. I think you would be best to start with a "donor" radio though.
There were some wonderful designs, and good RF valves are still cheap.

If, on the other hand, you just fancy a dabble, the simplest designs (just for AM) used TRF (Tuned Radio Frequency) designs. These sometimes only had 1 or 2 tuned circuits, so not much winding involved, and not precision. They used a system called "reaction" or "regeneration", (basically positive feedback) to increase Q, and so narrow bandwidth and increase gain.
  Reply With Quote
Old 26th May 2004, 06:35 PM   #5
316a is offline 316a  England
diyAudio Member
 
316a's Avatar
 
Join Date: Dec 2002
Location: West London
Default Re: Tube Radio Kit

Quote:
Originally posted by cuallito
i know this is an amp forum, but are there any tube radio kits available?
Hello ,
How about a radio based on those Philips chipsets with a valve output stage ? It may just be easier to buy an old mono valve tuner on the cheap , restore it , then add a stereo decoder and a valve output stage .

cheers

316a
  Reply With Quote
Old 26th May 2004, 06:40 PM   #6
diyAudio Member
 
Join Date: Sep 2003
Location: Texas
Here is one source.

Vintage Components

There are no superhets here, but interesting projects nonetheless.
  Reply With Quote
Old 26th May 2004, 06:54 PM   #7
diyAudio Member
 
Pjotr's Avatar
 
Join Date: Nov 2002
Location: Netherlands
Default Re: Re: Tube Radio Kit

Quote:
It may just be easier to buy an old mono valve tuner on the cheap , restore it , then add a stereo decoder and a valve output stage .

cheers

316a
That will not work. The mf bandwidth of an old tube mono FM receiver is simply too small to get a stereo decoder work.

Cheers
  Reply With Quote
Old 26th May 2004, 07:20 PM   #8
diyAudio Member
 
Join Date: Apr 2004
Location: Milky Way
thanks guys
  Reply With Quote
Old 26th May 2004, 08:55 PM   #9
tricomp is offline tricomp  Denmark
diyAudio Member
 
Join Date: May 2004
Location: Jutland
Quote:
That will not work. The mf bandwidth of an old tube mono FM receiver is simply too small to get a stereo decoder work.
Don't entirely agree. If you can live with a lower channel separation you may actually be able to see the pilot tone survive the IF circuits strong enough to get a decoder to work. I've tried with an old Philips FM-tuner that looked a lot like a tube car-radio but ran off 220V on a built-in PSU. What ever it was meant for in the first place looking like a car-radio (left & right knobs with treads for mounting nuts and the usual for car-radios center scale) I just don't know. Tweaking the IF for a maximum pilot tone output sent the MC-1310 decoder off doing it's job. Don't even THINK Hi-Fi

/Torben
  Reply With Quote
Old 27th May 2004, 07:07 AM   #10
dhaen is offline dhaen  Europe
diyAudio Moderator Emeritus
 
dhaen's Avatar
 
Join Date: Jun 2002
Location: U.K.
I'm humbled ...
Attached Images
File Type: jpg dhaen-quote.jpg (8.6 KB, 289 views)
  Reply With Quote

Reply


Hide 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
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
What to do with TMC tube radio gear? diamondsouled Tubes / Valves 4 31st March 2009 01:30 PM
Philips Tube radio Grifon Tubes / Valves 5 20th September 2007 03:40 AM
Help - tube radio JDeV Tubes / Valves 49 19th October 2006 08:18 PM
Old russian tube radio janar74 Tubes / Valves 17 2nd June 2003 01:52 PM
Another tube radio Magnetmaz Tubes / Valves 7 11th March 2003 06:01 PM


New To Site? Need Help?

All times are GMT. The time now is 01:02 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2