I wanted to go with more original ST style tubes that I would think are original to the radio but the tubes do not fit in the original shields (not enough inside diameter on the shield)!
Whats up with this?
Thanks
I looked at an online pic of your radio. It has square tube shields for the converter tube, etc. I would think that the square shields are used with the shouldered type tubes - ST type. Do you have the original square shields with the opening on the side for the grid cap? These should work with the ST tubes.
Lou
:Redoing a Philco 37-610. When I got the set, it had GT style tubes in the sockets that require tube shields. Of course these smaller tubes have the grid cap about half way up the length of the shield and are very hard to get to.
:I wanted to go with more original ST style tubes that I would think are original to the radio but the tubes do not fit in the original shields (not enough inside diameter on the shield)!
:Whats up with this?
:Thanks
:
:
:I looked at an online pic of your radio. It has square tube shields for the converter tube, etc. I would think that the square shields are used with the shouldered type tubes - ST type. Do you have the original square shields with the opening on the side for the grid cap? These should work with the ST tubes.
:
:Lou
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::Redoing a Philco 37-610. When I got the set, it had GT style tubes in the sockets that require tube shields. Of course these smaller tubes have the grid cap about half way up the length of the shield and are very hard to get to.
::I wanted to go with more original ST style tubes that I would think are original to the radio but the tubes do not fit in the original shields (not enough inside diameter on the shield)!
::Whats up with this?
::Thanks
::
:
:
Clifton
::Hunter:I do have the square tube shields that appear original (they fit the bases). They are 1 1/2" wide. I believe that the ST tubes are 1 9/16". Ive been told that this is the correct arrangement, but the shields fit the tubes very tightly. So, maybe thats just how it is-I just wonder why Philco would have made such a tight fit on these?
::
::I looked at an online pic of your radio. It has square tube shields for the converter tube, etc. I would think that the square shields are used with the shouldered type tubes - ST type. Do you have the original square shields with the opening on the side for the grid cap? These should work with the ST tubes.
::
::Lou
::
:::Redoing a Philco 37-610. When I got the set, it had GT style tubes in the sockets that require tube shields. Of course these smaller tubes have the grid cap about half way up the length of the shield and are very hard to get to.
:::I wanted to go with more original ST style tubes that I would think are original to the radio but the tubes do not fit in the original shields (not enough inside diameter on the shield)!
:::Whats up with this?
:::Thanks
:::
::
::
:
:
Believe you posted this question on ARF? Hard to come up with an answer. Your tube shields are too narrow for G style tubes. Your Philco was made in 1937 a little too early for GT tubes. Most GT tubes were released in 1938 or 1939.
Wonder if Philco continued to make 37-610 in 1938 or 1939? They usually changed the first numbers. Maybe Chuck or Ron would know?
Norm
:Perhaps the shields fitting tightly around the tube would help them conduct heat away from the tube better???
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:Clifton
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:
:::Hunter:I do have the square tube shields that appear original (they fit the bases). They are 1 1/2" wide. I believe that the ST tubes are 1 9/16". Ive been told that this is the correct arrangement, but the shields fit the tubes very tightly. So, maybe thats just how it is-I just wonder why Philco would have made such a tight fit on these?
:::
:::I looked at an online pic of your radio. It has square tube shields for the converter tube, etc. I would think that the square shields are used with the shouldered type tubes - ST type. Do you have the original square shields with the opening on the side for the grid cap? These should work with the ST tubes.
:::
:::Lou
:::
::::Redoing a Philco 37-610. When I got the set, it had GT style tubes in the sockets that require tube shields. Of course these smaller tubes have the grid cap about half way up the length of the shield and are very hard to get to.
::::I wanted to go with more original ST style tubes that I would think are original to the radio but the tubes do not fit in the original shields (not enough inside diameter on the shield)!
::::Whats up with this?
::::Thanks
::::
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:::
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::
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Mark- you are using the regular ST tubes with the Philco shields? Seems like an awfully tight squeeze- like the tubes would break if the shields are forced down.
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That is how they are, I have a 38-10 and 37-610 with sqare shelds and tubes are tight but they fit.
73's de Edd
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::Yes, the ST tubes. Verrrrryyyy tight! Haven't broken any. This set was in our family cottage for years and the tubes are mostly the ones that were in it when I got it. Mark from Kalamazoo
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:That is how they are, I have a 38-10 and 37-610 with sqare shelds and tubes are tight but they fit.
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Norm
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:Sirs . . . . .
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: In consideration of the unit being a square shield:
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:A fingertip applied thin seam of Dow Corning Silicone grease along the 4 longitudinal side paths that the tube will have to touch would assist shield installation.
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:Or . . . one might individually take the 4 sides and sequentially insert them in a vise, at a 45 degree angle to the jaws, in order to concentrate the flex action at the center of the shield.
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:Then one counts the fractional turn required to slightly bow that side outwards a smidge .
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:After initially finding it on two opposite sides, duplicate that minute bow on the other pair of sides
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:73's de Edd
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: Acupuncture . . . is . . . a jab well done..
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:::Yes, the ST tubes. Verrrrryyyy tight! Haven't broken any. This set was in our family cottage for years and the tubes are mostly the ones that were in it when I got it. Mark from Kalamazoo
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::That is how they are, I have a 38-10 and 37-610 with sqare shelds and tubes are tight but they fit.
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http://www.antiqueradios.com/forums/viewtopic.php?f=6&t=189309
:Someone posted a picture on ARF of a G type tube and shield which was too small to fit. Only GT size would fit but shield was tall. Wonder it this shield was made for 1A7G and 1N5G etc? These tubes are narrow but tall
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:Norm
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::Sirs . . . . .
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:: In consideration of the unit being a square shield:
::
::
::A fingertip applied thin seam of Dow Corning Silicone grease along the 4 longitudinal side paths that the tube will have to touch would assist shield installation.
::
::
::Or . . . one might individually take the 4 sides and sequentially insert them in a vise, at a 45 degree angle to the jaws, in order to concentrate the flex action at the center of the shield.
::
::
::Then one counts the fractional turn required to slightly bow that side outwards a smidge .
::
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::After initially finding it on two opposite sides, duplicate that minute bow on the other pair of sides
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::73's de Edd
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:: Acupuncture . . . is . . . a jab well done..
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::::Yes, the ST tubes. Verrrrryyyy tight! Haven't broken any. This set was in our family cottage for years and the tubes are mostly the ones that were in it when I got it. Mark from Kalamazoo
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:::That is how they are, I have a 38-10 and 37-610 with sqare shelds and tubes are tight but they fit.
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