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 (http://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 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 (http://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

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

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?


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 (http://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.

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.

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.

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.

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=A0am, "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. =A0The only problem is the=
2.5
> > > mH RFC, I can get a 27 mH unit off Dave's web store, is there any reas=
on
> > > to think that would work?
>
> > Mouser, DigiKey and possibly Antique Radio Supply (http://www.tubesandmore.com)=

> > should all have something that'll work. =A0Even surplus places like All
> > Electronics and MP Jones & Associates may be of help.
>
> > --
> > Tim Wescott
> > Control systems and communications consultinghttp://www.wescottdesign.co=
m
>
> > 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

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 (http://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

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.