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I have a BTI LK2000(single 3-1000Z) that I have rebuilt a few years ago. The Power supply had previously been changed to a traditional Choke input from the factory doubler supply. The transformer was

oops.. that should have read... with full bore current flowing, choke inductance DECREASES a tiny bit...and resonant freq INCREASES a bit. Jim VE7RF

I found a couple of identical .85 uf oil caps... pulled from microwave ovens. I measured each one, and #1 is .880 uf. #2 is .892 uf In series, they total .442979684 uf . When placed across the 127 lb

Just wondering if anyone has a WD7S Triode Control Kit that they would be willing to sell.? I am 80 years old and building my last 8877 QRO amplifier and would like to incorporate it into my build.

Hello jim.thom@..., Thanks Jim, very helpful, work has sidetracked me for a while but I will post back as to what i find but I don't think my Hi-Pot tester goes over 8kV Best regards, Chris

If the tube is rated fo 3.5 kv, it should hipot a lot more than double that. When driven to max out, the RF voltage in the PI / PI-L will back feed via the plate block cap...and superimpose itself

I have a beautiful Dentron MLA 2500B Amplifier that I purchased some years ago but never turned it on and now will never need to use it. A choice I have is to list the entire untested amp or list the

Hello 'Selcor', Wednesday, March 6, 2019 Thanks a lot for the comprehensive reply. The amp uses this transformer, maybe with a doubler or tripler, it's hard to see without some dismantling. What HT

Hello Alek, Wow, that's a comprehensive list, thanks Alek, appreciated :) Best regards, Chris 2E0ILY mailto:chris@... APvbch> APvbch> APvbch> APvbch> APvbch> APvbch> The bible for tubes is

The 3CPX800A7 is essentially the same as the 3CX800A7. The main difference is that the 3CPX800A7 is pulse rated and has a higher arc-over rating. Consequently, it can handle higher plate voltage. The

I don't know how that went here. Sorry guys.Bob ?WE6C To: "ham_amplifiers@..." <ham_amplifiers@...> Sent: Tuesday, March 5, 2019 3:01 PM Subject: Re: [ham_amplifiers]

Will wanna keep in contact with you for sure. I know all about finally meeting the love of my life, like you did. Too bad for all of us it took so long. That means we all have to make the most of the

The bible for tubes is here. https://frank.pocnet.net/ 3CX800A7 is listed. 73, Alek. VK6APK

05/03/2019 20:55 I have acquired an NMR linear amp made by AMP UK using two 3CPX800A7 tubes. It's bought "as seen and untested" Apart from the RF power meter smashed and a coupling centre insulator

For the lower voltage 5490 (under load) B+ supply for the 3x3 tube, I re-configured the myriad of 10,000uf filter caps. This also includes the 78 vdc vdrop, with the 1.5 A flowing through the 52 ohm

Duncan Monro... who is a ham, who wrote the infamous PSUD-2 power supply program, is also going to add a bunch more features to the upcoming PSUD-3 version. Data for the PRIMARY side of the plate xfmr

Same here ! The snakes were good selling when new... out of sight now. Nowadays, a 9 in the pocket... better than nothing ?? I wonder. Don W4DNR Quoting "'Roger (K8RI)' k8ri@...

Scott, KB3JQQ Today at 11:08 AM Another item for your perusal https://www.oreillyauto.com/flux-capacitor?q=121g https://www.oreillyauto.com/flux-capacitor?q=121g ## actually it does exist. Tyler,

Looks familiar.? I think it was on/in one of those Stainless Steel Delorians:-D Ran on garbage. Neither sold very well. That goes in the category (wish I had done differently) with my 2 Colt Pythons.

Awesome!