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Those Magnificent Television Tubes
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Old 15th September 2021, 01:18 AM   #1591
Tubelab_com is offline Tubelab_com  United States
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I was digging through a box of used hamfest tubes looking for some "test specimens" and I found one of those "winglet" Sylvania 6DQ5's mentioned by smoking-amp in post #1570 and other places.

It is shown here next to a Sylvania 26LW6. The plate structure looks identical except for the taller plate in the 26LW6.

The 6DQ5 has a 1.5 inch tall plate. The 26LW6 is RATED for 40 watts, and most will eat 50 if they were built right. It has a 2 inch tall plate. Simple dumm blonde 'rithmetic tells me that this 6DQ5 should eat 30 watts or more. We will see.....if it's good.
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Old 15th September 2021, 03:35 AM   #1592
smoking-amp is offline smoking-amp  United States
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The "winged" 6DQ5's I tested a while back had the same curves and plate size as a 21LG6A (28 Watt) and 24JE6/24LQ6 (30 Watt).

Would be nice to find a source for them at 6DQ5 prices, but they seem to be pretty rare.
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Old 15th September 2021, 04:47 PM   #1593
astouffer is offline astouffer  United States
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Quote:
Originally Posted by Tubelab_com View Post
I was digging through a box of used hamfest tubes looking for some "test specimens" and I found one of those "winglet" Sylvania 6DQ5's mentioned by smoking-amp in post #1570 and other places.

It is shown here next to a Sylvania 26LW6. The plate structure looks identical except for the taller plate in the 26LW6.

The 6DQ5 has a 1.5 inch tall plate. The 26LW6 is RATED for 40 watts, and most will eat 50 if they were built right. It has a 2 inch tall plate. Simple dumm blonde 'rithmetic tells me that this 6DQ5 should eat 30 watts or more. We will see.....if it's good.
You ever torture test any of the Russian 6P45C? Always wondered how they held up.
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Old 15th September 2021, 07:38 PM   #1594
kodabmx is offline kodabmx  Canada
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Those Magnificent Television Tubes
While I haven't torture tested them per se, they do work fine strapped as a triode with 320V B+ and 120mA idle (38W Pd)...
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Old 15th September 2021, 09:04 PM   #1595
Tubelab_com is offline Tubelab_com  United States
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You ever torture test any of the Russian 6P45C? Always wondered how they held up.
I don't have any to "test." Russian tubes were simply not available in my formative tube years, so I never really knew about them.

When I restarted my vacuum tube journey in the mid 90's Stan (ESRC) and his father Irving (founder of ESRC) were regular fixtures on the South Florida hamfest circuit. Their warehouse and business was about a mile from where I worked, so I visited often, sometimes just to look at stuff and remember things.

Any tubes that I had to pay for came from Stan, and he never had any Russian stuff, so I just never had them to play with.
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