Help Identify this Tube/coil

View previous topic View next topic Go down

Help Identify this Tube/coil

Post by Guest on Fri Aug 07, 2015 11:38 pm

I received a small box of tube from a friend and one of them was rather strange to me.

It is a Crosley G3-51014. It is an octal base tube with a coil inside and no heater!

Guest
Guest


Back to top Go down

Re: Help Identify this Tube/coil

Post by kb4yrc on Sat Aug 08, 2015 3:16 am

Would it be a ballast ? ..... Gregg

kb4yrc
Member
Member

Number of posts : 104
Age : 75
Registration date : 2008-05-20

Back to top Go down

Re: Help Identify this Tube/coil

Post by Dale H. Cook on Sat Aug 08, 2015 4:29 pm

I have seen it suggested elsewhere that it is an oscillator coil for a Roamio, but I have not been inside a Roamio.
avatar
Dale H. Cook
Member
Member

Number of posts : 82
Registration date : 2014-05-10

Back to top Go down

Re: Help Identify this Tube/coil

Post by Guest on Sat Aug 08, 2015 4:40 pm

Dale H. Cook wrote:I have seen it suggested elsewhere that it is an oscillator coil for a Roamio, but I have not been inside a Roamio.

I've seen that also but could not find it on any schematic.

Guest
Guest


Back to top Go down

Re: Help Identify this Tube/coil

Post by Dale H. Cook on Sun Aug 09, 2015 8:25 am

MEZLAW wrote:I've seen that also but could not find it on any schematic.
I looked through some of the Roamio pages in Rider and I didn't see anything promising either.

If it looks like a plug-in RF/IF coil then I think it likely that it came out of something that Crosley built for a military contract. I can't really imagine them building something with removable coils for civilian use. AFAIK they did not build amateur gear. Can you post some pics?
avatar
Dale H. Cook
Member
Member

Number of posts : 82
Registration date : 2014-05-10

Back to top Go down

Re: Help Identify this Tube/coil

Post by Dale H. Cook on Sun Aug 09, 2015 8:28 am

kb4yrc wrote:Would it be a ballast?
I am quite sure that if it were a ballast he would have recognized it as such. Surprised
avatar
Dale H. Cook
Member
Member

Number of posts : 82
Registration date : 2014-05-10

Back to top Go down

Re: Help Identify this Tube/coil

Post by Bill Cahill on Sun Aug 09, 2015 8:43 am

Just for informational purposes, a ballast would have vertically mounted coils of resistance wire. I have had a couple of solonoids in vacuim tube glass. There's a coil, and, contact switches. Most commonly used on equipment where dirtry contacts would cause major issues, such as in transmitters.

_________________
Please also join us here;  http://videokarma.org/index.php
avatar
Bill Cahill
Admin
Admin

Number of posts : 4523
Age : 66
Registration date : 2008-03-12

Back to top Go down

Re: Help Identify this Tube/coil

Post by Guest on Sun Aug 09, 2015 11:02 am


Guest
Guest


Back to top Go down

Re: Help Identify this Tube/coil

Post by Guest on Sun Aug 09, 2015 11:05 am

One more bit of information, all of these tubes in the box were used in early (1930's and 1040's) automobiles.

Guest
Guest


Back to top Go down

Re: Help Identify this Tube/coil

Post by Dr. Radio on Sun Aug 09, 2015 11:50 am

Definitely looks like a plug-in oscillator coil...

But why...and for what.......?

I would think for Military applications it would be more robust then just a glass envelope and for civilian applications, why would you need the ability to change out this coil on-the-fly?
avatar
Dr. Radio
Member
Member

Number of posts : 937
Age : 37
Registration date : 2012-09-17

Back to top Go down

Re: Help Identify this Tube/coil

Post by Bill Cahill on Mon Aug 10, 2015 9:38 am

After seeing the picture, I'd have to agree. It's an oscillator coil. But, unusual.

_________________
Please also join us here;  http://videokarma.org/index.php
avatar
Bill Cahill
Admin
Admin

Number of posts : 4523
Age : 66
Registration date : 2008-03-12

Back to top Go down

Re: Help Identify this Tube/coil

Post by Guest on Mon Aug 10, 2015 10:57 am

It is an oscillator coil, but I cannot find one on a Crosley schematic as a plug in. I agree the big question is why?

Guest
Guest


Back to top Go down

Re: Help Identify this Tube/coil

Post by 75X11 on Mon Aug 10, 2015 2:55 pm

I guess the next step is to see what kind of equipment Crosley built tor the war dept./DoD.
avatar
75X11
Member
Member

Number of posts : 4900
Age : 60
Registration date : 2013-03-10

Back to top Go down

Re: Help Identify this Tube/coil

Post by Sponsored content


Sponsored content


Back to top Go down

View previous topic View next topic Back to top

- Similar topics

 
Permissions in this forum:
You cannot reply to topics in this forum