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Total 14 documents matching your query.

1. [AMPS] Clipperton L & Bad tubes (score: 1): Author: jonk@moonlink.net (Jonathan Kaplan); Date: Mon, 05 Oct 1998 12:20:45 -0700; Thanks all for your answers regarding the tubes. Now that I have decided to replace the 572B's in the AMP, do any of you have comments, preferences, warnings, etc, regarding which brand, price point,; /archives//html/Amps/1998-10/msg00021.html (11,649 bytes)
2. [AMPS] Clipperton L & Bad tubes (score: 1): Author: w0opw@yahoo.com (david wintheiser); Date: Mon, 5 Oct 1998 14:06:58 -0700 (PDT); Just a note about 811a's and 572b's. Why not go on the cheap and use 4-811a's instead. Supposedly you can get 2/3 to 3/4 the output with about 1/4 the price. Loading would be alittle different but no; /archives//html/Amps/1998-10/msg00024.html (8,026 bytes)
3. [AMPS] Clipperton L & Bad tubes (score: 1): Author: k8cc@ix.netcom.com (David A. Pruett); Date: Mon, 5 Oct 1998 18:19:30 -0400; With regard to the comment about using 811-As rather than 572Bs, better first check the plate voltage. 572Bs can be run up to around 2.5KV while 811As are typically run around 1.5KV. Since the Clippe; /archives//html/Amps/1998-10/msg00030.html (8,680 bytes)
4. [AMPS] Clipperton L & Bad tubes (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Tue, 6 Oct 1998 11:21:40 -0400; Try 811's at 2500V and you will find out how far off base ! I really get pissed when hams try and go cheap without a clue as to the consequences. 73 Carl KM1H ________________________________________; /archives//html/Amps/1998-10/msg00041.html (9,263 bytes)
5. [AMPS] Clipperton L & Bad tubes (score: 1): Author: w0opw@yahoo.com (david wintheiser); Date: Tue, 6 Oct 1998 10:02:49 -0700 (PDT); Here's why I made that suggestion. I have a Dentron 160-10L, the older brother to the clipperton. It has a 2200 volt plate transformer and was designed for 4 811a's . The rather crude owners manual a; /archives//html/Amps/1998-10/msg00042.html (8,220 bytes)
6. [AMPS] Clipperton L & Bad tubes (score: 1): Author: measures@vc.net (Rich Measures); Date: Tue, 6 Oct 98 11:59:36 -0800; I don't think so. The 811A is rated at 1250V in plate modulated service. In ssb service the 811A does pretty ok up to about 1900v - provided that tuneup is done with a cw keyer sending dits or a tun; /archives//html/Amps/1998-10/msg00044.html (8,542 bytes)
7. [AMPS] Clipperton L & Bad tubes (score: 1): Author: zeitler@ibm.net (zeitler@ibm.net); Date: Tue, 6 Oct 1998 13:02:26 -0700; The Cliperton-L is a neat amp. 160 to 10 meter coverage. The xmfr has a hi and lo tap so you can select either around 640vac or around 900 vac if my memory is still working (been a while since I had; /archives//html/Amps/1998-10/msg00045.html (10,572 bytes)
8. [AMPS] Clipperton L & Bad tubes (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Wed, 7 Oct 1998 11:58:49 -0400; That amp blew 811's at a steady rate, even at 1700V under no load. Upgrading to 572Bs was recommended. Later 160-10L's had a tapped xfmr that could be selected for either tube. Dont believe everythin; /archives//html/Amps/1998-10/msg00052.html (9,876 bytes)
9. [AMPS] Clipperton L & Bad tubes (score: 1): Author: w0opw@yahoo.com (david wintheiser); Date: Wed, 7 Oct 1998 11:45:35 -0700 (PDT); Thanks for all the input. I was looking for meaningful dialogue and I certainly got it. Thanks to Carl for the background on my old Dentron blowing up 811a's at 1800 volts. Due to probable increase a; /archives//html/Amps/1998-10/msg00055.html (8,021 bytes)
10. [AMPS] Clipperton L & Bad tubes (score: 1): Author: jonk@moonlink.net (Jonathan Kaplan); Date: Wed, 30 Sep 1998 06:23:23 -0700; Hi all, Here's an elementary question: The power output of the amp on the various bands has recently declined. On some bands, I can't get more than 200 watts out with 100 watts in. I'm wondering if t; /archives//html/Amps/1998-09/msg00334.html (7,488 bytes)
11. [AMPS] Clipperton L & Bad tubes (score: 1): Author: km1h@juno.com (km1h@juno.com); Date: Wed, 30 Sep 1998 10:37:15 -0400; On Wed, 30 Sep 1998 06:23:23 -0700 Jonathan Kaplan <jonk@moonlink.net> writes: Replacement 572B's is not considered major $$$ by any standard. QRO is not for the cheap. With that said and done there; /archives//html/Amps/1998-09/msg00336.html (9,723 bytes)
12. [AMPS] Clipperton L & Bad tubes (score: 1): Author: measures@vc.net (Rich Measures); Date: Wed, 30 Sep 98 10:27:20 -0800; Don't change anything. 200w out with 100w in means unlimited virtually free electrical power. You are sitting on top of gold mine. In a few years, 'Dollar Bill' Gates could be the world's second ric; /archives//html/Amps/1998-09/msg00338.html (8,450 bytes)
13. [AMPS] Clipperton L & Bad tubes (score: 1): Author: n1rj@ime.net (Roger D. Johnson); Date: Wed, 30 Sep 1998 14:32:50 -0400; Check the filament voltage with an accurate meter. I repaired one for a friend that had almost 7 volts on the filaments. The poor 572B's went bad in a hurry! We put a 0.1 ohm resistor in the circuit; /archives//html/Amps/1998-09/msg00340.html (7,299 bytes)
14. [AMPS] Clipperton L & Bad tubes (score: 1): Author: w0opw@yahoo.com (david wintheiser); Date: Wed, 30 Sep 1998 10:54:44 -0700 (PDT); Carl, explain furthur the reasons for not using Svetlana. - Pat W0OPW _________________________________________________________ DO YOU YAHOO!? Get your free @yahoo.com address at http://mail.yahoo.co; /archives//html/Amps/1998-09/msg00341.html (7,339 bytes)

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