Regenerative Radios (Again!)

D

Dave.H

Guest
I've found a suitable regen radio circuit that only runs off 12
volts. I've already decided to buy a regen radio using a #30 tube off
Dave Schmarder, but the fun is in building them. The only problem is
the 2.5 mH RFC, I can get a 27 mH unit off Dave's web store, is there
any reason to think that would work?

Radio Page (schematic's at the bottom) http://www.schmarder.com/radios/tube/1-12af6.htm
 
On Fri, 14 Mar 2008 20:48:08 -0700, Dave.H wrote:

I've found a suitable regen radio circuit that only runs off 12 volts.
I've already decided to buy a regen radio using a #30 tube off Dave
Schmarder, but the fun is in building them. The only problem is the 2.5
mH RFC, I can get a 27 mH unit off Dave's web store, is there any reason
to think that would work?

Mouser, DigiKey and possibly Antique Radio Supply (www.tubesandmore.com)
Click to expand...
should all have something that'll work. Even surplus places like All
Electronics and MP Jones & Associates may be of help.

--
Tim Wescott
Control systems and communications consulting
http://www.wescottdesign.com

Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes, http://www.wescottdesign.com/actfes/actfes.html
 
On Mar 15, 3:03 pm, Tim Wescott <t...@seemywebsite.com> wrote:
On Fri, 14 Mar 2008 20:48:08 -0700, Dave.H wrote:
I've found a suitable regen radio circuit that only runs off 12 volts.
I've already decided to buy a regen radio using a #30 tube off Dave
Schmarder, but the fun is in building them. The only problem is the 2.5
mH RFC, I can get a 27 mH unit off Dave's web store, is there any reason
to think that would work?

Mouser, DigiKey and possibly Antique Radio Supply (www.tubesandmore.com)
should all have something that'll work. Even surplus places like All
Electronics and MP Jones & Associates may be of help.

--
Tim Wescott
Control systems and communications consultinghttp://www.wescottdesign.com

Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes,http://www.wescottdesign.com/actfes/actfes.html
Click to expand...
Found a 2.5mH choke at AES Cat # P-C1535B
 
On Mar 15, 2:48 pm, "Dave.H" <the19...@googlemail.com> wrote:
I've found a suitable regen radio circuit that only runs off 12
volts. I've already decided to buy a regen radio using a #30 tube off
Dave Schmarder, but the fun is in building them. The only problem is
the 2.5 mH RFC, I can get a 27 mH unit off Dave's web store, is there
any reason to think that would work?

Radio Page (schematic's at the bottom)http://www.schmarder.com/radios/tube/1-12af6.htm
Click to expand...
What type gauge wire should I use SWG or AWG?
 
On Mar 15, 3:12 pm, "Dave.H" <the19...@googlemail.com> wrote:
On Mar 15, 2:48 pm, "Dave.H" <the19...@googlemail.com> wrote:

I've found a suitable regen radio circuit that only runs off 12
volts. I've already decided to buy a regen radio using a #30 tube off
Dave Schmarder, but the fun is in building them. The only problem is
the 2.5 mH RFC, I can get a 27 mH unit off Dave's web store, is there
any reason to think that would work?

Radio Page (schematic's at the bottom)http://www.schmarder.com/radios/tube/1-12af6.htm

What type gauge wire should I use SWG or AWG?
Click to expand...

How much feet of wire would I need for each coil? I need to know this
so I can buy the litz from Dave Schmarder.
 
On Mar 15, 3:03 pm, Tim Wescott <t...@seemywebsite.com> wrote:
On Fri, 14 Mar 2008 20:48:08 -0700, Dave.H wrote:
I've found a suitable regen radio circuit that only runs off 12 volts.
I've already decided to buy a regen radio using a #30 tube off Dave
Schmarder, but the fun is in building them. The only problem is the 2.5
mH RFC, I can get a 27 mH unit off Dave's web store, is there any reason
to think that would work?

Mouser, DigiKey and possibly Antique Radio Supply (www.tubesandmore.com)
should all have something that'll work. Even surplus places like All
Electronics and MP Jones & Associates may be of help.

--
Tim Wescott
Control systems and communications consultinghttp://www.wescottdesign.com

Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes,http://www.wescottdesign.com/actfes/actfes.html
Click to expand...
Could I use 30 gauge silver plated insulated kynar wire for the non
litz coils? I can get this from the 1N34A.com site too.
 
On Fri, 14 Mar 2008 21:44:35 -0700, Dave.H wrote:

How much feet of wire would I need for each coil? I need to know this
so I can buy the litz from Dave Schmarder.
Click to expand...
Do the arithmetic. Pi * Coil diameter * turns count gives wire length.
Litz wire is nasty to terminate, so I wouldn't bother. The difference
between litz and plain old magnet wire might not even be observable in
this application.
 
On Mar 15, 7:24 pm, "Stephen J. Rush" <sjr...@comcast.net> wrote:
On Fri, 14 Mar 2008 21:44:35 -0700, Dave.H wrote:
How much feet of wire would I need for each coil? I need to know this
so I can buy the litz from Dave Schmarder.

Do the arithmetic. Pi * Coil diameter * turns count gives wire length.
Litz wire is nasty to terminate, so I wouldn't bother. The difference
between litz and plain old magnet wire might not even be observable in
this application.
Click to expand...

I didn't think so. I wasn't to keen in using litz wire. Magnet wire
is my preference. I do not know what Pi * Coil diameter is.
 
On Mar 15, 7:55 pm, "Dave.H" <the19...@googlemail.com> wrote:
On Mar 15, 7:24 pm, "Stephen J. Rush" <sjr...@comcast.net> wrote:

On Fri, 14 Mar 2008 21:44:35 -0700, Dave.H wrote:
How much feet of wire would I need for each coil? I need to know this
so I can buy the litz from Dave Schmarder.

Do the arithmetic. Pi * Coil diameter * turns count gives wire length.
Litz wire is nasty to terminate, so I wouldn't bother. The difference
between litz and plain old magnet wire might not even be observable in
this application.

I didn't think so. I wasn't to keen in using litz wire. Magnet wire
is my preference. I do not know what Pi * Coil diameter is.
Click to expand...
Since I can't find 30 gauge wire for the two smaller coils, I will
probably use 28 gauge. I'm assuming 200 feet is more than I need (AES
sells the wire in 200 foot spools.)
 
On Mar 15, 12:49 am, "Dave.H" <the19...@googlemail.com> wrote:
On Mar 15, 3:03 pm, Tim Wescott <t...@seemywebsite.com> wrote:





On Fri, 14 Mar 2008 20:48:08 -0700, Dave.H wrote:
I've found a suitable regen radio circuit that only runs off 12 volts.
I've already decided to buy a regen radio using a #30 tube off Dave
Schmarder, but the fun is in building them.  The only problem is the 2.5
mH RFC, I can get a 27 mH unit off Dave's web store, is there any reason
to think that would work?

Mouser, DigiKey and possibly Antique Radio Supply (www.tubesandmore.com)
should all have something that'll work.  Even surplus places like All
Electronics and MP Jones & Associates may be of help.

--
Tim Wescott
Control systems and communications consultinghttp://www.wescottdesign.com

Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes,http://www.wescottdesign.com/actfes/actfes.html

Could I use 30 gauge silver plated insulated kynar wire for the non
litz coils? I can get this from the 1N34A.com site too.- Hide quoted text -

- Show quoted text -
Click to expand...
You absolutely do not need litz wire for BC band. In fact, excessive
Q will lower your audio quality by diminishing the highs.

Even Radio Shack sells a bag of 3 sizes of magnet wire, #22, #26 and
#30.

Mike
 
On Mar 16, 1:18 am, Mike Silva <snarflem...@yahoo.com> wrote:
On Mar 15, 12:49 am, "Dave.H" <the19...@googlemail.com> wrote:



On Mar 15, 3:03 pm, Tim Wescott <t...@seemywebsite.com> wrote:

On Fri, 14 Mar 2008 20:48:08 -0700, Dave.H wrote:
I've found a suitable regen radio circuit that only runs off 12 volts.
I've already decided to buy a regen radio using a #30 tube off Dave
Schmarder, but the fun is in building them. The only problem is the 2.5
mH RFC, I can get a 27 mH unit off Dave's web store, is there any reason
to think that would work?

Mouser, DigiKey and possibly Antique Radio Supply (www.tubesandmore.com)
should all have something that'll work. Even surplus places like All
Electronics and MP Jones & Associates may be of help.

--
Tim Wescott
Control systems and communications consultinghttp://www.wescottdesign.com

Need to learn how to apply control theory in your embedded system?
"Applied Control Theory for Embedded Systems" by Tim Wescott
Elsevier/Newnes,http://www.wescottdesign.com/actfes/actfes.html

Could I use 30 gauge silver plated insulated kynar wire for the non
litz coils? I can get this from the 1N34A.com site too.- Hide quoted text -

- Show quoted text -

You absolutely do not need litz wire for BC band. In fact, excessive
Q will lower your audio quality by diminishing the highs.

Even Radio Shack sells a bag of 3 sizes of magnet wire, #22, #26 and
#30.

Mike
Click to expand...
I can't seem to find a source for #30 wire, neither Dick Smith or
Antique Electronic Supply stocks any, so I'll probably have to use the
#28.
 
On 3ÔÂ15ČŐ, ÉĎÎç11Ęą48ˇÖ, "Dave.H" <the19...@googlemail.com> wrote:
I've found a suitable regen radio circuit that only runs off 12
volts. I've already decided to buy a regen radio using a #30 tube off
Dave Schmarder, but the fun is in building them. The only problem is
the 2.5 mH RFC, I can get a 27 mH unit off Dave's web store, is there
any reason to think that would work?

Radio Page (schematic's at the bottom)http://www.schmarder.com/radios/tube/1-12af6.htm
Click to expand...


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