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

Everything Else Anything related to audio / video / electronics etc) BUT remember- we have many new forums where your thread may now fit! .... Parts, Equipment & Tools, Construction Tips, Software Tools......

Need a Radio Schematic.
Need a Radio Schematic.
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 27th November 2007, 03:25 AM   #11
dangus is offline dangus  Canada
diyAudio Member
Join Date: May 2004
Location: Vancouver Island
Need a Radio Schematic.
Old OEM car radios are virtually free, and should offer excellent RF performance since they had to operate under constantly varying reception conditions. Adding a 12V supply to one should make a great table radio.

Some also supported AM stereo; a friend had that in his '80s K-car, and it didn't sound bad at all.
  Reply With Quote
Old 27th November 2007, 03:46 AM   #12
I_Forgot is offline I_Forgot  United States
diyAudio Member
I_Forgot's Avatar
Join Date: Jan 2005
Location: Phoenix, Az.
The ZN414 chip was a real amazing one when it came out (late 70's, IIRC). It was a TRF type AM receiver in a 3 lead can that looked like a transistor. It was commonly found in behind-the-ear miniature radios that were powered by a hearing aid battery and tuned via a slug-tuned coil with a fixed capacitor. You could make SW radios out of them by tweaking the tuned circuit a little. Back then there was something to listen to on SW besides big-haired preachers begging for money so they can stay on the air and beg for more money.

That reminds me of another great chip. The Votrax speech synthesizer chip. It was the first (that I know of) phoneme based speech synthesizer that could be made to say anything, unlike the TI chips that were formant based and could only say prerecorded stuff. I built up a Votrax chip board and connected it to the printer port on my commodore 64 and had it talking up a storm.

  Reply With Quote


Need a Radio Schematic.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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
HD radio schematic bacon665 Digital Source 11 22nd September 2010 08:32 AM
Wanted: Vintage radio schematic - Philips B5CA66U (India) Dr. Ram Everything Else 3 23rd June 2008 04:24 AM
Allied Radio (Knight) KA-55 schematic redwine1118 Tubes / Valves 8 29th May 2008 07:03 AM
Has anyone got a schematic for a 27Mhz Radio transmitter/reciever JBlissett Everything Else 0 3rd January 2006 01:19 PM
Zenith AM/FM C835 tube Radio schematic gengis Tubes / Valves 2 18th October 2005 01:47 AM

New To Site? Need Help?

All times are GMT. The time now is 09:39 PM.

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