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 Wanted - Mantel set with Round Magic Eye
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 Return to top of page · Post #: 1 · Written at 8:14:26 AM on 3 November 2017.
Flakes's avatar
 Location: Adelaide, SA
 Member since 27 February 2010
 Member #: 630
 Postcount: 392

Hi All

I have a friend who is after a mantle set (or table top set) that has a magic round Magic eye tube installed. It doesn't have to be restored that is something I can do, Just mostly all there. 1940 or 50's Prefer Bakelite but a wooden set would also be considered.

Putting this out to see whats out there so let me know.

Dan


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Valve radios, They just don't make them like they used to

 
 Return to top of page · Post #: 2 · Written at 1:38:55 PM on 3 November 2017.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6172

Just on the topic of magic eyes in radios, I have never seen the need for them myself. I find that my ear is the best indicator of optimal tuning. I feel that magic eyes were more a gimmick than a tuning aid.


 
 Return to top of page · Post #: 3 · Written at 2:04:02 PM on 3 November 2017.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2013

They came from the days when users were used to tuning for max volume, before AGC was introduced.

Not everyone has a good ear for distortion caused by asymetrical sidebands. Particularly when the "tone" control was used to lop off ALL the top end to make a "mellow" sound.

Then, of course, after one maker introduced a magic eye, everyone had to have one.


 
 Return to top of page · Post #: 4 · Written at 2:20:32 PM on 3 November 2017.
GTC's avatar
 GTC
 Location: Sydney, NSW
 Member since 28 January 2011
 Member #: 823
 Postcount: 6172

Then, of course, after one maker introduced a magic eye, everyone had to have one.

And it added to the tube count, another marketing "feature".


 
 Return to top of page · Post #: 5 · Written at 7:22:43 PM on 3 November 2017.
Robbbert's avatar
 Location: Hill Top, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 1484

before AGC was introduced

They are normally driven by the AGC voltage.


Personally, I love magic eyes in my radios. It's just a pity that the older types (6E5, 6U5, 6U5G etc) wore out so quickly.


 
 Return to top of page · Post #: 6 · Written at 11:57:26 AM on 4 November 2017.
Ian Robertson's Gravatar
 Location: Belrose, NSW
 Member since 31 December 2015
 Member #: 1844
 Postcount: 2013

Yes, AGC made magic eyes possible, and one could say necessary at the same time because AGC makes a radio harder to tune by ear.

I don't recall ever seeing a magic eye in an Australian mantle radio. The only radio that comes to mind are the Philips battery portables from the 50s. But that was not a round "magic eye" tube.


 
 Return to top of page · Post #: 7 · Written at 1:34:21 PM on 4 November 2017.
Marcc's avatar
 Location: Wangaratta, VIC
 Member since 21 February 2009
 Member #: 438
 Postcount: 4506

There were some other idea's kicked around using basically, meter principles & globes.

If you look up some of the early American Midwest's. Their monsters of the thirties had some very different ideas. At least one has amplified AGC and that leads to one of few sets that attempt tell you how much signal to shove down it throat to set & align it. It is a pity they did not declare if that was PP. I used an attenuator & left one oscilloscope probe on it.

The one that is interesting & nothing to do with catching fish is their "Tuna light"

Marc


 
 Return to top of page · Post #: 8 · Written at 3:31:59 PM on 4 November 2017.
Robbbert's avatar
 Location: Hill Top, NSW
 Member since 18 September 2015
 Member #: 1801
 Postcount: 1484

Many European sets had magic eyes, anything from the tiny DM71 to the UM4 and everything in between.

Australian sets only sometimes had them, some Radiola consoles, the Radiola 7-valve wooden radio with shortwave had it.
And of course my 10-valve radio (subject of another thread) has a EM84.

If you need an Australian radio then you might need to search awhile. But if you're happy with a European one, then it shouldn't be a problem - and you may get the FM and long-wave bands as a bonus.


 
 Return to top of page · Post #: 9 · Written at 9:11:18 AM on 20 December 2017.
Flakes's avatar
 Location: Adelaide, SA
 Member since 27 February 2010
 Member #: 630
 Postcount: 392

Hi all

Still on the look for a radio with a Magic Eye. I would settle for a smaller European set as well. The person wants it just to have one. I guess its a status symbol thing Wink


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Valve radios, They just don't make them like they used to

 
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