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Total 55 documents matching your query.

1. [Amps] PI-L Thoughts! (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Sat, 11 Dec 2010 19:26:16 +0100
Hi all, I'm looking for some advice regarding the tank. I'm about 2/3 on the way to complete my first amplifier build and I'm having some thoughts about how to get C1 to low enough to load on 10 mete
/archives//html/Amps/2010-12/msg00106.html (8,880 bytes)

2. Re: [Amps] PI-L Thoughts! (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Sat, 11 Dec 2010 22:00:50 +0100
Ok. Thanks. I have come across this solution before. I kind of didn't think about it, because it is not so common. I'll look into it! Sent from my iPad _______________________________________________
/archives//html/Amps/2010-12/msg00113.html (11,896 bytes)

3. Re: [Amps] PI-L Thoughts! (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Sat, 11 Dec 2010 22:03:27 +0100
Thanks. This sounds better than pushing the Q on the higher bands. I'll look into it. Maybe it is better described in earlier editions of the handbook. I have at least one from each decade, so I'll g
/archives//html/Amps/2010-12/msg00114.html (9,143 bytes)

4. Re: [Amps] PI-L Thoughts! (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Sun, 12 Dec 2010 08:45:09 +0100
Thank you all for your insights in this matter. It seem like my original thought to tweak the Q is not very good. The two dominating suggestions are: 1, add a smaller C1 to the existing and switch in
/archives//html/Amps/2010-12/msg00130.html (13,434 bytes)

5. Re: [Amps] PI-L Thoughts! (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Sun, 12 Dec 2010 09:41:55 +0100
Ok. Thanks. I'm looking at my 25-300 C1 and I got the idea to "chop" it up in two sections. It looks like a fairly simple procedure. Question is if the smaller section will render in a value low enou
/archives//html/Amps/2010-12/msg00132.html (9,146 bytes)

6. Re: [Amps] 572B AMP PLANS changed to 811 plans (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 27 Dec 2010 09:05:45 +0100
Speaking of 811A... What is the best source for unused tubes these days? Is China the only alternative? I'm building a nostalgia project alongside with my bigger amp build. Most of my junk box parts
/archives//html/Amps/2010-12/msg00391.html (16,315 bytes)

7. [Amps] YC-229 - 3cx1500Z7 (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Tue, 18 Jan 2011 11:34:34 +0100
What is this tube? http://cgi.ebay.com/EIMAC-Transmitting-Tube-YC-229-3CX1500Z7-/220534031896?pt=LH_DefaultDomain_0&hash=item3358da4618#ht_500wt_922 I can't find any data sheets on CPI/Eimac's homepa
/archives//html/Amps/2011-01/msg00178.html (7,347 bytes)

8. Re: [Amps] Transformer advice (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 24 Jan 2011 10:12:03 +0100
Does anyone know of a European manufacturer that offers the same quality for the same competitive price? Although I live in Sweden that price is very affordable even when I add on 200 USD of shipping
/archives//html/Amps/2011-01/msg00243.html (9,487 bytes)

9. [Amps] Pi/L in Ameriton amps? (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Wed, 26 Jan 2011 13:04:07 +0100
I'm helping a friend of mine who bought a damaged 811H. Transformer and tubes where gone. New transformer is on the way from Ameritron and tubes we found locally. I think we will have it up and runni
/archives//html/Amps/2011-01/msg00303.html (7,471 bytes)

10. Re: [Amps] Pi/L in Ameriton amps? (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Wed, 26 Jan 2011 13:35:00 +0100
Yes, you are right.... I was confused because I thought it said "pi-l" in the specs sheet. But it doesn't. Still my question applies to the bigger amplifiers. For example the specifications of AL-150
/archives//html/Amps/2011-01/msg00305.html (8,960 bytes)

11. Re: [Amps] Pi/L in Ameriton amps? (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Wed, 26 Jan 2011 17:32:49 +0100
So, if I interpret this correctly the lower Q of L2 makes the tank less sensitive to a wider frequency change? The conclusion of that would thus be that it is not necessary to tap L2 for each band? H
/archives//html/Amps/2011-01/msg00311.html (12,303 bytes)

12. Re: [Amps] Pi/L in Ameriton amps? (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Wed, 26 Jan 2011 20:05:14 +0100
Yes. I see that now. It is so cool to learn from you guys. I learn a lot in this forum! Sent from my iPad _______________________________________________ Amps mailing list Amps@contesting.com http://
/archives//html/Amps/2011-01/msg00322.html (16,173 bytes)

13. Re: [Amps] OM3500A (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Thu, 27 Jan 2011 09:00:57 +0100
I think 350-400 is a good estimate for the shipping. Regarding Slovakia, they are a member of EU since a couple of years which means they are a part of all EU-USA trade agreements. Import should be t
/archives//html/Amps/2011-01/msg00359.html (15,395 bytes)

14. [Amps] looking for idea on switching arrangment (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 31 Jan 2011 08:51:57 +0100
Hi all, I'm looking for some suggestions on how to switch input together with output. I plan on using relays for the input so mechanical alignment is not a big issue. But I still have to switch DC co
/archives//html/Amps/2011-01/msg00452.html (7,345 bytes)

15. Re: [Amps] Power ALS500M with SMPS (dual 45amp units in parallel) (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 31 Jan 2011 17:16:23 +0100
I'm running that amplifier on two separate Power Supplies. If it is right, I don't know. But it works for mer 73's Ulf (SM0NOR) ulf@sm0nor.com _______________________________________________ Amps mai
/archives//html/Amps/2011-01/msg00462.html (7,825 bytes)

16. Re: [Amps] looking for idea on switching arrangement (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 31 Jan 2011 17:14:25 +0100
Looke really, really nice. The whole build... Where did you find that extra wafer/switch? 73's Ulf (SM0NOR) ulf@sm0nor.com _______________________________________________ Amps mailing list Amps@conte
/archives//html/Amps/2011-01/msg00463.html (9,596 bytes)

17. [Amps] source for band switch (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Tue, 15 Feb 2011 13:22:03 +0100
Hi all, This guy is selling new band switches, allegedly used in OM3500. http://www.qro-shop.com/ Press the English flag for English or scroll down to "schalter" and look for "Bandschalter 5000W" The
/archives//html/Amps/2011-02/msg00113.html (7,137 bytes)

18. Re: [Amps] Adhesive forTeflon sheet.. (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 21 Mar 2011 18:57:40 +0100
Small Parts www.smallparts.com offers bondable Teflon sheet already etched on one side. Maybe that could work for you? http://www.smallparts.com/ptfe-sheet-bondable-etched-white/dp/B003SLF06W/ref=sr_
/archives//html/Amps/2011-03/msg00153.html (8,709 bytes)

19. [Amps] Cetron 811a. (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Sun, 4 Dec 2011 11:23:13 +0100
Hi all, I recently bought 4 Cetron 811a from Nebraska Surplus, date coded 1988. I intend to put them into a home brewed amp that is real close to smoke testing. Is there any start up procedure that i
/archives//html/Amps/2011-12/msg00024.html (6,997 bytes)

20. Re: [Amps] Cetron 811a. (score: 1)
Author: "Ulf (SM0NOR)" <ulf@sm0nor.com>
Date: Mon, 5 Dec 2011 23:36:21 +0100
No takers? This ought to be a very simple question :) 73's Ulf (SM0NOR) ulf@sm0nor.com _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.co
/archives//html/Amps/2011-12/msg00044.html (7,576 bytes)

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