Homemade radio made with compactron tubes and many salvaged components. The tube line-up is a 17C9 convertor, 8BM11 1st and 2nd IF, 6SL7 1st audio stage and 6V6 audio output.
It uses 2 silicon diodes in a full wave setup for power supply B+ voltage and a power transformer from a VM tape recorder. A choke input filter is used, with two stages of filter chokes. One is an actual choke and the other is made from a vertical output transformer.
For the filament supplies, there are 2 6 volt taps on the transformer. In the original application, one fed the rectifier tube alone. Here, one 6-volt tap feeds the 6V6 and 6SL7. The other one is in series with the first, and goes through a resistor to supply the 8 volt filament of the 8BM11. A cassette recorder power transformer supplies the 17-volt filament of the 17C9.
Germanium diodes are used in the ratio detector circuit.
I made this radio back in 2001.
For more vintage radio and electronics information please visit http://www.retroaudiolab.com
Duration : 0:2:39
[youtube Ed40G6XazmU]
March 8th, 2010 at 1:15 am
not even
not even
March 8th, 2010 at 1:15 am
gigady
gigady
March 8th, 2010 at 1:15 am
Cleveland from …
Cleveland from family guy. WHOA
March 8th, 2010 at 1:15 am
So amazing, …
So amazing, wonderful work, being FM radio using tube is good. Is there anyway to get schematic drawing?
March 8th, 2010 at 1:15 am
is there anyway I …
is there anyway I could get the schematic for this from you? I’d like to build something like this for a design project for my EET class
March 8th, 2010 at 1:15 am
Nice project! …
Nice project! Bravo.
March 8th, 2010 at 1:15 am
Awesome video. Keep …
Awesome video. Keep on with that good work!
One day youll be a millionaire radio expert!
March 8th, 2010 at 1:15 am
many kind of …
many kind of detectors use diodes
March 8th, 2010 at 1:15 am
does it give you …
does it give you stereo sound?
March 8th, 2010 at 1:15 am
1:05 He clearly …
1:05 He clearly said that there is a germanium diode.
March 8th, 2010 at 1:15 am
mmmm K?
mmmm K?
March 8th, 2010 at 1:15 am
lul @ voice
lul @ voice
March 8th, 2010 at 1:15 am
That’s so amazing …
That’s so amazing that you can build that stuff. You’re an artist!
March 8th, 2010 at 1:15 am
ive been looking …
ive been looking for a am fm lw mw sw and marine band radio with tubes caint find one guess im just gonna have to make it like this one
March 8th, 2010 at 1:15 am
Tell us the …
Tell us the schematic.
March 8th, 2010 at 1:15 am
This is very cool! …
This is very cool! I’ve been searching around for AM, FM and short wave plans that use tube electronics.
March 8th, 2010 at 1:15 am
put a bar tuner on …
put a bar tuner on it and you are good to go!
March 8th, 2010 at 1:15 am
When you were a kid …
When you were a kid were you as fascinated by the electronics books by Alfred P. Morgan, as I was?
March 8th, 2010 at 1:15 am
I’m impressed, well …
I’m impressed, well done! There’s something to be said for old valves etc. Good quality stuff that lasts. Not like the crap thats produced nowadays.
March 8th, 2010 at 1:15 am
what kind of …
what kind of detector it uses
March 8th, 2010 at 1:15 am
Ohhh and the best …
Ohhh and the best part was when you first turned it one and first thing out was rap music. I just found it funny coming out of a tube radio
March 8th, 2010 at 1:15 am
You sound just like …
You sound just like a fella I talk to on my local 2 meter repeater in the Cincinnati area. Cheers on the homebrew receiver!
March 8th, 2010 at 1:15 am
what a quality. …
what a quality. really nice
March 8th, 2010 at 1:15 am
go tubes!
go tubes!
March 8th, 2010 at 1:15 am
Thanks!
Thanks!