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Total 28 documents matching your query.

21. [Amps] Eimac YU-209/3CX1500A7 tubes (score: 1)
Author: "Jim Monahan" <K1PX@msn.com>
Date: Wed, 22 Jan 2014 03:40:34 -0500
There are 13 used ones on eBay from the same seller with bidding starting at .99 cents that I came across today at: http://www.ebay.com/sch/goodyfinder4u/m.html?item=111262724774&ssPageName=STRK%3AME
/archives//html/Amps/2014-01/msg00217.html (7,142 bytes)

22. [Amps] 3-500Z pin becomes unsoldered (score: 1)
Author: "Jim Monahan" <K1PX@msn.com>
Date: Tue, 13 May 2014 16:38:56 -0400
I have a Heath SB-221 that had the filament go out years ago on one of the tubes. It turns out, with the Eimac version, that there was no direct contact between the filament leads coming down from in
/archives//html/Amps/2014-05/msg00082.html (7,367 bytes)

23. [Amps] FS: Ameritron AL-1200 (score: 1)
Author: Jim Monahan <k1px@msn.com>
Date: Mon, 11 Jun 2018 14:38:41 +0000
This rugged legal limit amp uses the 3CX1200A7 tube. The power supply will provide up to 2500 W PEP for 30 minutes. $1800 or best offer plus shipping and insurance. Prefer local pickup in south centr
/archives//html/Amps/2018-06/msg00020.html (6,878 bytes)

24. [Amps] FS: AL-1200 (score: 1)
Author: Jim Monahan <k1px@msn.com>
Date: Fri, 14 Sep 2018 16:37:29 +0000
This rugged legal limit amp uses the 3CX1200A7 tube. The power supply will provide up to 2500 W PEP for 30 minutes. $1800 or best offer plus shipping and insurance. Prefer local pickup in south centr
/archives//html/Amps/2018-09/msg00014.html (6,391 bytes)

25. [Amps] FS: KPA 500 (score: 1)
Author: Jim Monahan <k1px@msn.com>
Date: Sat, 6 Apr 2019 09:15:33 +0000
"KPA 500 S/N 1682 was purchased in May 2017. It is in perfect working condition and, currently, wired for 220/240 VAC. It can be changed to 120 VAC externally with switching the fuse box. Both power
/archives//html/Amps/2019-04/msg00026.html (6,855 bytes)

26. [Amps] FS: Alpha 89 (score: 1)
Author: Jim Monahan <k1px@msn.com>
Date: Fri, 6 Aug 2021 08:32:17 +0000
two 3CX800A7 triodes, for sale. It is in good working condition and I'm asking $2,200 for it but will consider any reasonable offer. Because of the weight (75 lbs), I prefer local pickup in SW CT bu
/archives//html/Amps/2021-08/msg00017.html (6,527 bytes)

27. [Amps] Penta 3CX1500A7/8877 (score: 1)
Author: Jim Monahan <k1px@msn.com>
Date: Fri, 28 Jun 2024 13:28:30 +0000
I just bought a new (sealed in the box) Penta 8877 that has a data sheet indicating it was built and tested 6/13 - 11 years ago. My search reveals some conflicting information about starting this tub
/archives//html/Amps/2024-06/msg00005.html (6,576 bytes)

28. Re: [Amps] Penta 3CX1500A7/8877 (score: 1)
Author: Jim Monahan <k1px@msn.com>
Date: Fri, 28 Jun 2024 16:23:08 +0000
Okay, thank you! A good 8877 can easily go 20 years from the last use to the next, however if you want to be sure just run filament only for 24 hours before plate voltage. Cant hurt. Sent from the al
/archives//html/Amps/2024-06/msg00007.html (8,134 bytes)

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