Forums :: Resources :: Features :: Photo Gallery :: Vintage Radio Shows :: Archives :: Books
Support This Site: Contributors :: Advertise


It is currently Dec Wed 13, 2017 6:00 pm


All times are UTC [ DST ]





Post New Topic Post Reply  [ 9 posts ] 
Author Message
 Post subject: CD as a radio dial
PostPosted: Jan Sun 28, 2007 6:20 am 
Member

Joined: May Tue 30, 2006 4:46 pm
Posts: 9106
Location: Santa Rosa, CA
I made a hub for a CD on my lathe. The intent is to use this a dial for a home brew.

This is turned from aluminum rod on my little Harbor Freight lathe. Setscrews hold it to a 1/4" shaft and two 4-40 screws hold the CD to the face of the hub.

http://antiqueradios.com/albums/Misc/CDdialBkr_80.jpg
http://antiqueradios.com/albums/Misc/CDdialFr_80.jpg

Rich


Top
 Profile  
 
 Post subject: Re: CD as a radio dial
PostPosted: Jan Sun 28, 2007 6:24 am 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 3045
Location: Québec!
Rich, W3HWJ wrote:
I made a hub for a CD on my lathe. The intent is to use this a dial for a home brew.

This is turned from aluminum rod on my little Harbor Freight lathe. Setscrews hold it to a 1/4" shaft and two 4-40 screws hold the CD to the face of the hub.

http://antiqueradios.com/albums/Misc/CDdialBkr_80.jpg
http://antiqueradios.com/albums/Misc/CDdialFr_80.jpg

Rich


Rivets would be nice.

Syl


Top
 Profile  
 
 Post subject:
PostPosted: Jan Sun 28, 2007 7:04 am 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 7422
Location: Beautiful Downtown Burbank CA
I have used the clear plastic "protector" that comes on some CDs. I especially like the small 3½" CDs. This is a crystal radio (actually hidden amplified) with a clear "CD" with a moveable indicator and stationary dial scale. Rubber grommet makes a tight fit over the red button (actually a water heater pilot button) Dial string behind controls it.


Image


Last edited by Mike Toon on Jan Sun 28, 2007 7:09 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject:
PostPosted: Jan Sun 28, 2007 8:18 am 
Member
User avatar

Joined: Jan Thu 01, 1970 1:00 am
Posts: 3143
Now you're talkin!

Great job, Rich.

I'm now using wood and found that my cap shafts are so short that I had to recess the screw heads.

On the CD itself, I've mounted screws like in your second photo, but the heads stick up so much that I think I'll need to put holes in the CD label.

Beautiful job. Let me know if you plan to sell these.

Macrohenry


Top
 Profile  
 
 Post subject:
PostPosted: Jan Sun 28, 2007 1:23 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 7338
Location: Minneapolis, MN USA
Beautiful work, Mike.


Top
 Profile  
 
 Post subject:
PostPosted: Jan Sun 28, 2007 6:57 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 1892
Location: Austin Texas USA
Rich, Mike, (et al)...

Examples from both Members, nicely done...The pics illustrating Rich's hub and dial assembly are very Collins(esque)...Reminds me of some surplus logging scale dials I had from a Collins KWS-1...Very similar.

Bruce
WC5CW


Top
 Profile  
 
 Post subject:
PostPosted: Jan Sun 28, 2007 10:48 pm 
Member

Joined: Jan Thu 01, 1970 1:00 am
Posts: 683
Location: St. Marys / Kingsland / Kings Bay, GA
That's a really cool idea. I always like to see new uses for otherwise boring stuff.

What else I think should be mentioned is that you have the benifit of all the precut CD labels and software which will make it easy to make scales for this method, too.

Perhaps a threaded hub (I dunno how) and a little retainer nut from a switch to hold the CD in place?

tdkask


Top
 Profile  
 
 Post subject:
PostPosted: Jan Sun 28, 2007 10:59 pm 
Silent Key

Joined: Jan Thu 01, 1970 1:00 am
Posts: 34326
Location: Sandpoint, IDAHO 83864
It is one heck of a better idea for them than what I have used them for! And I think most of you may know what that is! One clue for the newbies....it involves 100 yards.
Curt

_________________
Curt, N7AH
(Connoisseur of the cold 807) CW forever!


Top
 Profile  
 
 Post subject:
PostPosted: Jan Mon 29, 2007 1:27 am 
Member

Joined: May Tue 30, 2006 4:46 pm
Posts: 9106
Location: Santa Rosa, CA
Speaking of software for making dial scales...

I use GraphPaper. It's really neat for making circular scales and you can put divisions and tick marks as you wish. You can also make any number of degrees in the scale, so you can use it with pots, switches, variable caps, etc. I think it's still available via the Internet from Metz in France. You can also make your own log paper and Smith charts with it.



See issue #160 of Electric Radio for an article I wrote regarding making new scales for dials and analog meters.

Rich
[/url]http://perso.easynet.fr/~philimar/[url]


Top
 Profile  
 
Post New Topic Post Reply  [ 9 posts ] 

All times are UTC [ DST ]


Who is online

Users browsing this forum: No registered users and 10 guests



Search for:
Jump to:  


















Privacy Policy :: Powered by phpBB