Re: Tube socket for 3CX1500A7 tube-socket broken
Yes. Go for it. They are good. 73, Alek VK6APK.
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Alek Petkovic
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#40834
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Re: TL-922 tube filament voltage.
Fluke 87's and 88's fall in to that class. Kim Herron W8ZV kim.herron@... 1-616-677-3706
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Kim Herron <kim.herron@...>
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#40833
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Re: Tube socket for 3CX1500A7 tube-socket broken
I've heard that saying somewhat modified:? "A waist is a terrible thing to mind".? That's for? those of us who've had a couple cold 807's too many.? It's OK.? You're in good company.? Me done
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Kim Herron <kim.herron@...>
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#40832
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Re: TL-922 tube filament voltage.
The meter one uses for AC mains or any AC measurements should be a TRUE RMS reading meter to be accurate. Many of the higher quality Fluke meters (read higher priced ones) are True RMS reading AC
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Walter
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#40831
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Re: Smoker contamination removal
When I worked at a office equipment repair department, we used simple green (a common cleaner here in the mid-west), to clean the copiers and fax machines with. sprayed it on and the smoke residue ran
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Chuck Miller
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#40830
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Re: Tube socket for 3CX1500A7 tube-socket broken
Yeah, Nothing like making a complete fool of yourself! I stand corrected. It was doing a google search and scanned at the specs of the DTR-1200L. A mind is a terrible thing when it is wasted!
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Mike Sawyer
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#40829
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Re: Tube socket for 3CX1500A7 tube-socket broken
According to the manual the DTR-2000L has one 3CX1500A7.? Are you thinking of the DTR-1000L? Kim Herron W8ZV kim.herron@... 1-616-677-3706
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Kim Herron <kim.herron@...>
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#40828
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Re: Tube socket for 3CX1500A7 tube-socket broken
Excuse me for asking but I thought the DTR-2000L had 572B¡¯s and not an 8877? Mod-U-Lator, Mike(y)/W3SLK Sent: Wednesday, December 18, 2024 12:34 PM To: [email protected] Subject:
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Mike Sawyer
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#40827
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Re: Tube socket for 3CX1500A7 tube-socket broken
I have good johnson sockets for 8877's. Mike
By
mike repinski
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#40826
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Tube socket for 3CX1500A7 tube-socket broken
Sorry to be a pest guys!! I've become the proud owner of a Dentron DTR-2000L amp with a broken tube socket and a missing cooling fan. This came from an estate and I'm sure that the SK was not using
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Kim Herron
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#40825
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Re: TL-922 tube filament voltage.
Hi, T he measured AC voltage of the 3-500Z tubes in the TL-922A as measured at the tube pins was a bit high in my amplifier, about 5.4 volts. Adding a CL-80 current limiter in series with each of the
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Jack Roberts
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#40824
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Re: TL-922 tube filament voltage.
That sounds like its a bit high until you figure that lots of our gear was designed around 117 volts nominal +/- 10 percent.? At + 10 percent 129 VAC COULD be considered within spec.? My voltage
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Kim Herron
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#40823
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Re: TL-922 tube filament voltage.
Lou, That's pretty lucky. I should check mine. The transformer for my house is on the pole at the street in front of my house ,about 100 feet away from the house. Bob W4JFA [email protected]> wrote:
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Bob
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#40822
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Re: TL-922 tube filament voltage.
Right, the guy said he used a Flike. ?With line voltage at 252 I¡¯d be concerned about lots of things in my house. ?I¡¯m lucky, I have a transformer for my house just for me!! Sent from the all
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Louis Parascondola
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#40821
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Re: TL-922 tube filament voltage.
Additional comments and another choice for your TL922 3-500Z filaments. I just downloaded and examined the TL-922 amplifier service manual. I traced the input power circuit and the TL922 doesn¡¯t
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Dave w6de
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#40820
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Re: TL-922 tube filament voltage.
At 252 I might be concerned about a bunch of things in your house. Sent from the all new AOL app for iOS
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Louis Parascondola
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#40819
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Re: TL-922 tube filament voltage.
Yeah Mikey, I concur.? I used to install copiers (50 years ago) and I had to install buck/boost transformers in certain parts of Grand Rapids MI because the infrastructure was old and the voltages
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Kim Herron
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#40818
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Re: TL-922 tube filament voltage.
Not to belabor the point but it is wise to monitor you incoming voltage and note that at times it will change. I have quite a bit of classic equipment that was designed to run at 115~117VAC. I
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Mike Sawyer
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#40817
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Re: TL-922 tube filament voltage.
Thanks for the info Dale. Upgrading the service to the house DID make a difference.? I went from 238 to 252.? It had to do with the replacement transformer and service conductors. BTW, I use a Fluke
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Kim Herron
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#40816
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Re: TL-922 tube filament voltage.
Ohmite offers bolt down fractional value resistors in metal casings of 10 and 25 Watt values. For a single 3-500Z dropping 0.5 Volt at 15.5 Amp requires an 0.17 Ohm resistor and will dissipate 7.25
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Dave w6de
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#40815
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