#1
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6A7 tube substitutes?
Popped the top off my 6A7 tube and may not be able to mend it
I have some digit tubes 77,78 ,58, etc. Just wondering if i have a sub in my pile before i go online and order a new one.. Thanks.. SR |
#2
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Better order one. None of your others will fit into the socket. 6a7 /2a7 are odd balls. Electrically they are the same as a 6a8 but they are octals.
GL Terry |
#3
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What i meant was 6C6 will sub a 77 and a 6D6 will sub a 78, is there a # that will sub a 6A7??
SR |
#4
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I'm surprised that the prices went that high. |
#5
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Some firms adopted the octal based tubes earlier. Many still used the UX bases much later, Philco especially. The pentagrid tube replaced the use of the separate oscillator and mixer tube or the autodyne converter setup. |
Audiokarma |
#6
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Steve, In case this link is dead where I saw them on ebay and I have three myself. https://www.ebay.com/i/262346461158?...SABEgLPgPD_BwE
__________________
"When resistors increase in value, they're worthless" -Dave G |
#7
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Is the wire broke off completely flush with the glass?
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#8
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Those 6AF6G's look pretty interesting. I wonder if they could sub the 6E5 just by changing the socket? |
#9
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I had to change tube sockets, then swapped a 6BE6 for the 12BE6, and moved some series heater wiring. Probably cant do this in too many radios, but this one's wacky design made it a no-brainer, since I have several 1629s and few 6U5/6G5 and 6E5s sub for those.
__________________
"When resistors increase in value, they're worthless" -Dave G |
#10
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Yep, it broke flush with the glass, i had enough to test with and the tube is marginal, so i bit the bullet and bought a NOS one off the bay..
While im inside this radio, is there a good sub for a .25MFD cap? SR |
Audiokarma |
#11
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A new .25MFD cap
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#12
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.25 costs a bit more than the .22 And...that may not matter if its a bypass cap and not in an RC network
__________________
"When resistors increase in value, they're worthless" -Dave G |
#13
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__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#14
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If you have a .22 and .03 you can wire them in parallel. Some restorers get pissy when they see it but it works fine.
__________________
Tom C. Zenith: The quality stays in EVEN after the name falls off! What I want. --> http://www.videokarma.org/showpost.p...62&postcount=4 |
#15
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In fact, they would be OK in just about any TV, even in a timing circuit. Normally use a 0.27. Only in real hi-fi audio filters would it matter. |
Audiokarma |
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