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And since 3-500Z tubes are zero-bias .... 73 Jim N6OTQ [email protected]> wrote:

And keep in mind I make zero, zip, nada off tubes my customers purchase and drop ship to me. So my statement is truly un biased.

I have used thousands of 3-500zg penta tubes in customers pa’s. Not once have I had an issue or have any customers reported an issue. But I was putting new tubes into pa’s that I had gone through

CTR gets his 3-500Z's from the exact same chinese factory as Pentalabs....and also RF parts.? ?These are the ones with the white bases.? ?Factory #2 is junk, with a 70% failure rate....and those

The best appears to be from CTR engineering. There are two plants that make 3-500 tubes in china. These are the best of the two. They are fully Hi pot tested and guaranteed. Mine have been rock solid.

On Sat, May 18, 2024 at 06:52 PM, Joe - W7RKN wrote: > > > > It appears I have a shorted 3-500Z tube in my AL-82 amplifier. > > > > > > > > It also appears that right now the 3-500Z or ZG tubes are

Not sure why so many are freaking out about the closure and parts availability. All of the parts they carry are still in production. Most of them have other part options that will work in their place.

phone all three BOTH numbers on their contact list.? ?I got through to em....twice, 2 days ago. ameritron 1-662-323-8211 *MFJ Enterprises Inc:* Toll Free: *1-800-647-1800* *MFJ / Vectronics /

Un obtanium ? What makes you think and then say that ? Penta and all the others are Chinese. Ones with the white ceramic base all come from the same factory, and are from the better of the two

I needed up adding a QSK-5 instead. There is at least one more on the classifieds. I don’t know how you got ahold of Ameritron. I can’t get through. Colin -

It appears I have a shorted 3-500Z tube in my AL-82 amplifier. It also appears that right now the 3-500Z or ZG tubes are unobtainium. Sellers on eBay are selling new Penta tubes for a ridiculous

HEC is located in Pennsylvania....right in the heart of Amish country. https://www.highenergycorp.com/

12 KW CCS ON 160-15M....USING THE 3CX-6000A7..... PART 17 Here the grid and plate overcurrent protection, plus grid current and plate current metering are being done, using existing boards, with some

Thanks Jim I will avoid them. I used to buy a lot from Maxgain hopefully the AMp Repair guy will stock them and I will order some in the future, Cheers

Those are the real deal? High energy corp? HT-57's.? ?HT-57's are not cheap. There is a chinese company on ebay, that sells their version of everything that HEC makes.....and also Draloric and

Hi Jim Are those HT57's the USA made ones or the Chinese ones. I notice that Ebay seems to flooded with fake HT57's or has High Energy moved their factory to China like everything else these days?

Thanks for the schematic. I'll keep it for future use just in case. Good job! 73, Bob W4JFA [email protected]> wrote:

Gentlemen; Interesting and helpful dialog.? Thank you.? Steve, I didn't go down the path you describe too much because i had the plug and play cable.? I will look at that again to understand your

On my yaesu? FT-1000MP-MKV,? ( FT-1000D)? the tx inibit lead is always grounded...... until a mini-din plug is inserted into the yaesu mini din jack....at which point the grnd is removed inside the

Yup.? Everything will still be available. The Pentalabs 3-500Z's have already been added.? ?The 572B's are next.? ?Then the rest of the Pentalabs entire tube line up, including 8877, 3CX-800A7,