Need a Radio Schematic. - Page 2 - diyAudio
Go Back   Home > Forums > General Interest > Everything Else

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......

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 27th November 2007, 02:25 AM   #11
dangus is offline dangus  Canada
diyAudio Member
 
Join Date: May 2004
Location: Vancouver Island
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, 02:46 AM   #12
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.

I_F
  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
HD radio schematic bacon665 Digital Source 11 22nd September 2010 07:32 AM
Wanted: Vintage radio schematic - Philips B5CA66U (India) Dr. Ram Everything Else 3 23rd June 2008 03:24 AM
Allied Radio (Knight) KA-55 schematic redwine1118 Tubes / Valves 8 29th May 2008 06:03 AM
Has anyone got a schematic for a 27Mhz Radio transmitter/reciever JBlissett Everything Else 0 3rd January 2006 12:19 PM
Zenith AM/FM C835 tube Radio schematic gengis Tubes / Valves 2 18th October 2005 12:47 AM


New To Site? Need Help?

All times are GMT. The time now is 09:37 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