Search String: Display: Description: Sort:

Results:

References: [ +from:carlseye@tampabay.rr.com: 346 ]

Total 346 documents matching your query.

241. [Amps] re: freq. vs. tuning (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Wed, 22 Dec 2004 20:35:52 -0500
The question was raised as to freq. change vs. re-tuning.!! It all comes down to the "Q" of the final tank ckt. (plus maybe the "q" of the input ckt ) The sharper the "Q" of the output ckt the more y
/archives//html/Amps/2004-12/msg00273.html (7,477 bytes)

242. Re: [Amps] ok ONE more time <g> Ameritron 811H (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Mon, 3 Jan 2005 07:36:33 -0500
The grid resistors are shown in my 811H manual as R 19 thru R22.they are listed as 51 ohms, 2 watt metal oxide. I have always replaced these with 33 ohms 1/2 watt , and I've never had any problems, b
/archives//html/Amps/2005-01/msg00035.html (10,015 bytes)

243. [Amps] regulators (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Fri, 7 Jan 2005 18:31:52 -0500
I'm slowly getting back to my first priority (love?) my revamped SB201/ SB200.!!! I'm wanting ? ( no, AM using , Rich's QSK setup. Since the SB200 has a 110 v ac winding on the xfmr I will use that f
/archives//html/Amps/2005-01/msg00111.html (7,315 bytes)

244. [Amps] g-g amps (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Sun, 9 Jan 2005 19:28:28 -0500
Is there anything to be gained or lost when it comes to grounding the grid(s) directly as opposed to using chokes or (fuse) resistors.?? The SB220 measures grid current thru a .82 ohm resistor from c
/archives//html/Amps/2005-01/msg00161.html (6,646 bytes)

245. [Amps] pi-l coils (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Tue, 11 Jan 2005 07:39:33 -0500
While reading the thread on pi-l coils I clicked on the link to the "amps" archives and in reading these comments on "plate chokes" I clicked on the *original * link and it said, "quote" "you are not
/archives//html/Amps/2005-01/msg00198.html (6,601 bytes)

246. Re: [Amps] qrp-excited amps (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Fri, 14 Jan 2005 19:59:19 -0500
The 5763 , in osc. svc. would not give more than a couple watts , so a good qrp rig should should be able to drive that type amp.!! Just an old thought.!! carl / kz5ca -- Original Message -- From: "d
/archives//html/Amps/2005-01/msg00268.html (8,424 bytes)

247. Re: [Amps] Small Amplifier (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Mon, 17 Jan 2005 19:32:47 -0500
Is the 4cx250b useable in G-G?? (safely) carl / kz5ca -- Original Message -- From: "Will Matney" <craxd1@ezwv.com> To: <Amps@contesting.com> Sent: Friday, January 14, 2005 12:15 PM Subject: Re: [Amps
/archives//html/Amps/2005-01/msg00328.html (9,470 bytes)

248. [Amps] current tating?? (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Fri, 21 Jan 2005 20:03:08 -0500
The SB 200 transformer has a 120 v ac winding, which was used for the antenna relay/ bias supply.!!! can anyone tell me what the max. current rating for that winding was ( or is) ?? I don't want to o
/archives//html/Amps/2005-01/msg00440.html (6,771 bytes)

249. Re: [Amps] 30L-1 and 572B (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Sun, 23 Jan 2005 18:54:56 -0500
Carlos: I can't help you with the switch , but yes, you can run the 572B's without any mods, it's just that it's kind of a waste of good tubes.I wouldn't buy new 572B's , but as long as you've got th
/archives//html/Amps/2005-01/msg00501.html (8,443 bytes)

250. [Amps] ampliphase (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Fri, 28 Jan 2005 19:20:54 -0500
I've been around electronics for many years, but I had never heard of this "ampliphase" system until it was mentioned here on the amps reflector.!! I looked at one of the diagrams on a link and I mus
/archives//html/Amps/2005-01/msg00549.html (7,326 bytes)

251. Re: [Amps] AL-811 AMP. (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Sun, 6 Feb 2005 16:07:32 -0500
Ray. It would seem that the op/stby switch has failed , because if that switch doesn't work you wont get a transmit lite , and the antenna relay can't operate either.It's also possible you've lost th
/archives//html/Amps/2005-02/msg00203.html (8,341 bytes)

252. [Amps] Pi-net formulas (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Wed, 16 Feb 2005 20:41:20 -0500
Some time back I commited the unpardonable sin of giving away nearly all my best books (to a new ham who needed them more than I did, ) Anyway , there is one on this list who can give me what I need.
/archives//html/Amps/2005-02/msg00554.html (6,607 bytes)

253. [Amps] alc (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Mon, 28 Feb 2005 07:50:18 -0500
Imho, an amp built with the proper amount of negative feedback doesn't need alc. I have repaired a number of SB200's and none of them could be driven into flattopping with my IC735. 70 watts in has b
/archives//html/Amps/2005-02/msg00928.html (6,328 bytes)

254. Re: [Amps] Yaesu FL-2100B failure (grid resistor caps) (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Sun, 6 Mar 2005 08:42:18 -0500
Kevin: To start with , those grid caps are supposed to be 200 PF each. and you need to replace them with a total of about 1000 pf on each tube. The fact that the relay works ( with the tubes out) mak
/archives//html/Amps/2005-03/msg00152.html (12,569 bytes)

255. [Amps] mica caps (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Sun, 6 Mar 2005 17:39:08 -0500
In selecting caps for a given project , how can one determine from the markings on the cap the voltage rating.?? I have ordered mica caps from a distributor, and of course their book tells the rating
/archives//html/Amps/2005-03/msg00184.html (6,850 bytes)

256. Re: [Amps] AL-811H (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Wed, 30 Mar 2005 20:13:00 -0500
Is it Don or Dan?? Anyway, when it comes to the question of 811A's or 572B's , if you have an amp such as the 811, or 811H, or any amp for that matter , that uses 811A tubes, if you happen to have so
/archives//html/Amps/2005-03/msg00735.html (10,906 bytes)

257. Re: [Amps] Best way to drop fil V on L7 (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Sun, 17 Apr 2005 19:00:27 -0400
John: altho I'm not familiar with the L7, I did rewind the fil choke on an SB200 with 18 ga. wire and it dropped the fil voltage about 3to 4/10th. of a volt, which of course it was way too high anywa
/archives//html/Amps/2005-04/msg00344.html (7,956 bytes)

258. Re: [Amps] How to replace lamps on AL811 Ameritron? (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Sat, 21 May 2005 08:27:06 -0400
Otakebi : I have done a few of these things in the past. It is fairly easy, BUT, it must be done very carefully. First of all, don't replace the bulbs with the original types because they will likely
/archives//html/Amps/2005-05/msg00238.html (10,122 bytes)

259. Re: [Amps] Ameritron and Steppir (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Sun, 5 Jun 2005 07:28:59 -0400
You say the SWR is "flat". Is that on the output side of the amp or the input side.??? (just courious) carl / kz5ca -- Original Message -- From: "Todd Ruby" <rubywine@verizon.net> To: <amps@contestin
/archives//html/Amps/2005-06/msg00027.html (7,907 bytes)

260. Re: [Amps] Ceramic Coupler (score: 1)
Author: "carl seyersdahl" <carlseye@tampabay.rr.com>
Date: Sun, 5 Jun 2005 13:06:20 -0400
Bob: If your coupler ends have enough meat you can drill out one side 1/8 in. Do it carefully with a sharp drill.!! I've done that a couple times and if done carefully it will work fine !!! carl / kz
/archives//html/Amps/2005-06/msg00034.html (7,550 bytes)

Current List: 241 - 260
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15] [16] [17] [18]
This search system is powered by Namazu