Re: Amp modification
I would get the 3CX800 checked out and if good go with that. Socket is the same, filament voltage would need changed and maybe the bias. That should be it. Look at all the Alpha amps that have been
By
mike repinski
·
#40845
·
|
Re: Amp modification
Hi Billy, I'm not an amplifier guru. I've studied & repaired a few. There's a notion in the RF amplifier camp that says "if your amplifier needs more than one tube, you need a different design." I
By
Robin Midgett
·
#40844
·
|
Re: TL-922 tube filament voltage.
You can buy many decent RMS multimeters like the Brymen BM857 that is a fully safety rated and protected meter that is much cheaper than the Fluke. There are others.? There is a Multimeter comparison
By
tardivat@...
·
#40843
·
|
Amp modification
Well, I was lucky enough to pick up a Henry Tempo 2006 that did not have any tubes. Yes, 3CX400A7 tubes are expensive so we were looking into modifying it to run 2 or 3 4CX250B tubes instead. I know
By
Billy Pickering
·
#40842
·
|
Re: Tube socket for 3CX1500A7 tube-socket broken
I located a spare Johnson #247 socket (8877). Never been soldered on. Make offer.. Dennis, w8nw [email protected]> wrote:
By
Dennis Homerick
·
#40841
·
|
Re: Tube socket for 3CX1500A7 tube-socket broken
###? ?If I remember correctly, the 1st DTR-2000L's had this mickey mouse fan in there for cooling.? Local dealer had the 1st one in stock.? ? We all laughed when we saw the small fan...that
By
Jim VE7RF
·
#40840
·
|
Re: Tube socket for 3CX1500A7 tube-socket broken
Ah. OK. I have gold plated ones here that I got from Mableaudio many years ago. I know that they do silver as well. I can add that the sockets have nice spring tension on the pins. That goes for the
By
Alek Petkovic
·
#40839
·
|
Re: Tube socket for 3CX1500A7 tube-socket broken
Add says silver plated but yes very nice looking product.
By
mike repinski
·
#40838
·
|
Re: Tube socket for 3CX1500A7 tube-socket broken
Yep. Sure is. Superb quality. Gold plated contacts and all. Alek
By
Alek Petkovic
·
#40837
·
|
Re: Tube socket for 3CX1500A7 tube-socket broken
The porcelain part of the socket are cheap at hamfest, Johnson 273 I believe. ?It gets expensive with the copper grid tabs. Sent from the all new AOL app for iOS
By
Louis Parascondola
·
#40836
·
|
Re: Tube socket for 3CX1500A7 tube-socket broken
Is this socket a copy of the Johnson socket with the same mounting hole locations? Mike
By
mike repinski
·
#40835
·
|
Re: Tube socket for 3CX1500A7 tube-socket broken
Yes. Go for it. They are good. 73, Alek VK6APK.
By
Alek Petkovic
·
#40834
·
|
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
By
Kim Herron <kim.herron@...>
·
#40833
·
|
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
By
Kim Herron <kim.herron@...>
·
#40832
·
|
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
By
Walter
·
#40831
·
|
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
By
Chuck Miller
·
#40830
·
|
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!
By
Mike Sawyer
·
#40829
·
|
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
By
Kim Herron <kim.herron@...>
·
#40828
·
|
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:
By
Mike Sawyer
·
#40827
·
|
Re: Tube socket for 3CX1500A7 tube-socket broken
I have good johnson sockets for 8877's. Mike
By
mike repinski
·
#40826
·
|