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241. [AMPS] RF Concepts Amplifier Question (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 16 Jun 1999 20:15:20 -0500; Hi all, I have an RF Concepts 4-310 UHF brick. It's spec'd to put out 100 Watts with 30 Watts in. However, I get power different from that! I finally have a power meter for UHF so I decided tonight t; /archives//html/Amps/1999-06/msg00483.html (8,557 bytes)
242. [AMPS] New World Record for 8877 Replacement (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 17 Jun 99 15:04:11 -0500; It's too bad W8JI left the reflector before this came up. He claims you can stabilize an 8877 w/o a suppressor. I believe that's possible since I've stabilized a 4-1000 w/o a traditional suppressor; /archives//html/Amps/1999-06/msg00500.html (8,775 bytes)
243. [AMPS] New World Record for 8877 Replacement (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 17 Jun 99 16:01:47 -0500; Yes, Rich. I guess you not only selectively edit, you selectively read as well! Oh well, I guess we all do. Yes, Tom said he'd spent his alloted time on "AMPS" for one year. He was leaving. Perhaps; /archives//html/Amps/1999-06/msg00502.html (8,719 bytes)
244. [AMPS] measuring meter shunt resistance (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 17 Jun 1999 23:02:26 -0500; The ARRL handbook talks about a method using two meters and a known resistance. I can look up the specific page if you like. 73, Jon KE9NA -- Jon Ogden KE9NA http://www.qsl.net/ke9na <-- CHECK IT OU; /archives//html/Amps/1999-06/msg00510.html (8,190 bytes)
245. [AMPS] Vacuum Variable for Sale on E-Bay (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Fri, 18 Jun 1999 00:16:31 -0500; Hey guys, If anyone is looking for a vaccuum variable, here's a good looking one. It's for sale on E-Bay (item # 116417377) and is a 20 KV, 14 to 80 pF unit. Looks like it is in excellent shape. Ther; /archives//html/Amps/1999-06/msg00512.html (7,221 bytes)
246. [AMPS] article in magazine on RF (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Fri, 18 Jun 99 15:59:37 -0500; No, to see what Peter really does in real life, one must see him at a party suite at Dayton. This frequency planning stuff is just a front or a hobby. 73, Jon KE9NA -- The Second Amendment is NOT ab; /archives//html/Amps/1999-06/msg00524.html (7,254 bytes)
247. [AMPS] N type/PL259 (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 21 Jun 99 10:20:01 -0500; Peter, According to the specs I have on these connectors, the threads are 5/8 x 24. 73, Jon KE9NA -- The Second Amendment is NOT about duck hunting! Jon Ogden jono@enteract.com www.qsl.net/ke9na "A; /archives//html/Amps/1999-06/msg00557.html (7,137 bytes)
248. [AMPS] N type/PL259 (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 21 Jun 99 10:48:04 -0500; OK, according to the spec sheet, it says UNEF-2B on the plug (male) and UNEF-2A on the jack (Female). I think that is Unified thread, right? Perhaps, Peter, you have just solved a problem that has b; /archives//html/Amps/1999-06/msg00560.html (8,608 bytes)
249. [AMPS] Parasitics (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Mon, 21 Jun 1999 21:39:18 -0500; Larry, I couldn't have said it better myself! You hit the nail on the head! 73, Jon KE9NA ps: Who runs a stable 80,40,20,15,& 10 m 4-1000A with no traditional RL suppressor -- Jon Ogden KE9NA http:/; /archives//html/Amps/1999-06/msg00567.html (8,087 bytes)
250. [AMPS] Parasitics (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 22 Jun 1999 20:17:43 -0500; Rich, Mine runs at 6 KV with no load. NO parasite problems and I used it heavily in the CQWW Contest (3.22 Million points, thank you) this past spring. That contest was a great smoke test and the am; /archives//html/Amps/1999-06/msg00581.html (7,809 bytes)
251. [AMPS] Parasitics (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 22 Jun 1999 20:20:51 -0500; I disagree. If your stability factor is less than 1 (or is it greater than one, I forget!) the amp is unconditionally stable. It can be done. It's difficult over large bandwidths. OK, you have got m; /archives//html/Amps/1999-06/msg00582.html (8,068 bytes)
252. [AMPS] Parasitics (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 22 Jun 1999 22:17:37 -0500; Perhaps it is! But I think the particular design/layout that I have works well. Note that I did not say NO suppressor. I said no RL suppressor. Basically I just use some inductance. Others have had; /archives//html/Amps/1999-06/msg00584.html (7,803 bytes)
253. [AMPS] Strange Tube Problem (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Tue, 22 Jun 1999 22:24:43 -0500; OK, now that I've bragged about my amp's performance I have a problem with my 4-1000A! Tonight I turned the amp on to work some DX and when I applied the high voltage, I got all sort of blue glowing; /archives//html/Amps/1999-06/msg00585.html (8,596 bytes)
254. [AMPS] Strange Tube Problem (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 23 Jun 99 09:31:33 -0500; Excuse me? How can an amp be parasitic when it is keyed and with zero input signal and there is no excess plate current above the idle value and no grid current? Please explain how a damaging parasi; /archives//html/Amps/1999-06/msg00592.html (7,532 bytes)
255. [AMPS] Peak reading vs True peak (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 23 Jun 99 09:39:29 -0500; Peak and average power for a CW signal is identical. A lot depends here. First of all how good is your peak reading meter? How fast is it? SSB voice peaks are pretty short. My Daiwa has a peak hold; /archives//html/Amps/1999-06/msg00593.html (9,856 bytes)
256. [AMPS] Peak reading vs True peak (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 23 Jun 99 10:00:44 -0500; Hey Rich, Help me understand something here: What difference does it make that the anode supply is unregulated when it comes to peak power readings? The CW signal is going to pull the anode supply d; /archives//html/Amps/1999-06/msg00597.html (9,259 bytes)
257. [AMPS] Peak reading vs True peak (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 23 Jun 99 11:27:27 -0500; Two problems here: 1.) I'll agree that the peak power HANDLING capability of the tube can be related to its anode voltage. But to me the peak of a particular signal is based on the level of the inpu; /archives//html/Amps/1999-06/msg00602.html (13,185 bytes)
258. [AMPS] Peak reading vs True peak (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 23 Jun 99 14:35:52 -0500; I know. I was intentionally putting words into your mouth. :-) Again, does the gain drop enough to make any difference in output power? Of course perhaps I should have asked how much difference you; /archives//html/Amps/1999-06/msg00607.html (15,314 bytes)
259. [AMPS] Strange tube problems (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Wed, 23 Jun 1999 23:34:00 -0500; OK guys, Tonight I opened the amp and replaced the tube (a Federal project in and of itself!). Put everything back together. No pops, snaps or blue glows. Except now, no output power either! And inpu; /archives//html/Amps/1999-06/msg00627.html (8,211 bytes)
260. [AMPS] Peak reading vs True peak (score: 1): Author: jono@enteract.com (Jon Ogden); Date: Thu, 24 Jun 99 09:50:56 -0500; That's what I always thought too: When you decrease plate voltage, plate current increases. I can see that on my amp when I drop the plate voltage with the variac. I draw more plate current. 73, Jon; /archives//html/Amps/1999-06/msg00645.html (9,665 bytes)

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