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321. Re: [Amps] Drake L4B to 6 Meters Help (score: 1): Author: gudguyham--- via Amps <amps@contesting.com>; Date: Tue, 13 Dec 2016 02:21:56 -0500; Self cut off bias has NOTHING to do with operating bias! Operating bias is set by Zener diodes or a string of diodes in the CT return of the filament transformer. The more string diodes or the higher; /archives//html/Amps/2016-12/msg00343.html (11,375 bytes)
322. Re: [Amps] Drake L4B to 6 Meters Help (score: 1): Author: gudguyham--- via Amps <amps@contesting.com>; Date: Tue, 13 Dec 2016 02:22:55 -0500; That's what I've been saying all along. Sent from AOL Mobile Mail Michelle Did you say that you are running the 2 tubes a zero bias and have about 100mA idle current. I think it should be more like 2; /archives//html/Amps/2016-12/msg00344.html (10,521 bytes)
323. Re: [Amps] Drake L4B to 6 Meters Help (score: 1): Author: gudguyham--- via Amps <amps@contesting.com>; Date: Tue, 13 Dec 2016 02:32:24 -0500; Like I said, self bias is for cut off bias not operating bias. Cut off bias is one thing and operating bias is another. The self cut of bias mod doesn't change operating bias. It only does because so; /archives//html/Amps/2016-12/msg00346.html (11,452 bytes)
324. Re: [Amps] Drake L4B to 6 Meters Help (score: 1): Author: gudguyham--- via Amps <amps@contesting.com>; Date: Tue, 13 Dec 2016 02:34:26 -0500; Obviously not done right or poor workmanship or tubes. Output quite low. Sent from AOL Mobile Mail Mike, I saw this on Eham.com for sale.SB 220 converted to 6 meters only as per QST April 08 minus va; /archives//html/Amps/2016-12/msg00347.html (10,578 bytes)
325. [Amps] Par Metals (score: 1): Author: kf8od--- via Amps <amps@contesting.com>; Date: Wed, 14 Dec 2016 04:53:22 -0500; They don't answer emails or the phone, anybody know if they are still in business? Anybody know another company that makes aluminum enclosures? 73, Mike KF8OD ________________________________________; /archives//html/Amps/2016-12/msg00362.html (6,476 bytes)
326. Re: [Amps] Par Metals (score: 1): Author: Russ Williams via Amps <amps@contesting.com>; Date: Wed, 14 Dec 2016 22:07:25 +0000 (UTC); Over here in Yankee land, "bonnets" are made of soft cloth and are worn by our young ladies. We keep our feet in our boots, no spare tires!! uhh--sorry "Tyres" :-) Lurking mode back on. ;-) Look; /archives//html/Amps/2016-12/msg00370.html (9,497 bytes)
327. Re: [Amps] Idiosyncratic opinion on amp choices (score: 1): Author: "Joe Giacobello, K2XX via Amps" <amps@contesting.com>; Date: Fri, 16 Dec 2016 11:06:03 -0500; Hear! Hear! I owned two of these at one time. They are a pleasure to maintain because all leads are labelled and shown in the schematic. The RF deck is only 14 lbs. and can be located remotely from t; /archives//html/Amps/2016-12/msg00392.html (15,792 bytes)
328. [Amps] rE TOPIC 1... (score: 1): Author: Gary Smith via Amps <amps@contesting.com>; Date: Fri, 16 Dec 2016 10:16:57 -0800; Regarding Icom's PW-1, when I was searching for a new amp, was told the tuner section was shaky at best. Costly to ship to local Icom repair center, doubly costly to fix. Bought a manual tune Ameritr; /archives//html/Amps/2016-12/msg00396.html (6,842 bytes)
329. [Amps] Modern AM Broadcast Transmitters (score: 1): Author: Donald Fox via Amps <amps@contesting.com>; Date: Sun, 18 Dec 2016 14:41:40 +0000 (UTC); Gents: If I understand what is being said correctly, you are describing a different way of modulating an AM carrier which in appearance sounds like it would look more like am FM carrier on an analog; /archives//html/Amps/2016-12/msg00414.html (8,329 bytes)
330. Re: [Amps] Modern AM Broadcast Transmitters (score: 1): Author: Bryan Swadener via Amps <amps@contesting.com>; Date: Sun, 18 Dec 2016 19:11:30 +0000 (UTC); Thanks Don, PWM has been around since at least the early 1970s.It's NOT new. Originally, it used hollow state devices. I'll add that the switch rate needs to be at least twice the highest modulation; /archives//html/Amps/2016-12/msg00420.html (8,485 bytes)
331. [Amps] Modern AM Broadcast Transmiters (score: 1): Author: Donald Fox via Amps <amps@contesting.com>; Date: Mon, 19 Dec 2016 00:45:54 +0000 (UTC); Quoting Don: Great Question. WLW was licensed for 500KW ( 1/2 Megawatts ). Their *Peak* power would have been 2 Megawatts at 100% modulation. With a steady state audio tone, again at 100% modu; /archives//html/Amps/2016-12/msg00424.html (8,180 bytes)
332. [Amps] Plate transformer wanted (score: 1): Author: Jeff Pederson via Amps <amps@contesting.com>; Date: Sun, 25 Dec 2016 21:10:28 +0000 (UTC); Im looking for a plate transformer 120/240 @ 2600-2800 vac at .800-1amp. Ameritron is out of stock. If you have something collecting dust and not to pricey id be interested. I had thought about buyin; /archives//html/Amps/2016-12/msg00440.html (6,790 bytes)
333. [Amps] Plate transformer (score: 1): Author: Jeff Pederson via Amps <amps@contesting.com>; Date: Mon, 26 Dec 2016 17:35:07 +0000 (UTC); Thanks to all that replied I have located a plate transformer locally. Im still wondering if its worth it to buy the c-cores and materials and wind your own. Could you get more bang for the buck doin; /archives//html/Amps/2016-12/msg00443.html (6,652 bytes)
334. Re: [Amps] Plate transformer (score: 1): Author: Bryan Swadener via Amps <amps@contesting.com>; Date: Tue, 27 Dec 2016 17:34:26 +0000 (UTC); Jeff, I started with a FREE E-I core split-bobbin xfmr from a scrapped medical equipment power supply. It had several LV secondaries. After identifying the primary windings, it was a simple matter o; /archives//html/Amps/2016-12/msg00446.html (8,216 bytes)
335. Re: [Amps] FCC Denies Expert Linears' Request for Waiver of 15 dB Rule (score: 1): Author: aborg via Amps <amps@contesting.com>; Date: Wed, 28 Dec 2016 15:01:26 +0000 (UTC); Jim nailed it to a tee !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Mike-KK4MS a_borg@yahoo.com From: Jim W7RY <jimw7ry@gmail.com> To: Cc: 'AMPS' <amps@contesting.com> Sent: Wednesday, December 28, 2016 8:21 AM; /archives//html/Amps/2016-12/msg00467.html (16,580 bytes)
336. Re: [Amps] re idling current alpha 9500 amp (score: 1): Author: "K1WPO, Joe via Amps" <amps@contesting.com>; Date: Thu, 29 Dec 2016 10:24:03 -0500; 120 MA on an Alpha 77 dX at 3800 VDC you would check and see what your idling plate current is with the amp keyed but without rf drive. Thanks from Fern VE7GZ" 90 mA here. Paul, W9AC ________________; /archives//html/Amps/2016-12/msg00509.html (7,859 bytes)
337. Re: [Amps] FCC Denies Expert Linears' Request for Waiver of 15 dB Rule (score: 1): Author: John Watkins via Amps <amps@contesting.com>; Date: Sat, 31 Dec 2016 08:16:36 -0600; Rob, got my first license in the 60s while at Collins Radio. Was learning then and still learning. Gotta love the reflectors and the net. Google may be our friend for searching the web, but the refle; /archives//html/Amps/2016-12/msg00540.html (10,806 bytes)
338. Re: [Amps] 9500 idle current (score: 1): Author: Steve via Amps <amps@contesting.com>; Date: Sun, 1 Jan 2017 17:48:31 -0500; Thanks for the info jay, and for the great products. Best 73, steve w1dxh Sent from my iPhone _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contes; /archives//html/Amps/2017-01/msg00003.html (9,677 bytes)
339. Re: [Amps] FCC Denies Expert Linears' Request for Waiver of 15 dB Rule; Long off topic reply (score: 1): Author: Glen Zook via Amps <amps@contesting.com>; Date: Mon, 2 Jan 2017 16:03:31 +0000 (UTC); Except, from the early 1950s until 22 November 1968, when "incentive" licensing went into effect, Conditional Class, General Class, Advanced Class, and Amateur Extra Class licensees all had full priv; /archives//html/Amps/2017-01/msg00021.html (13,623 bytes)
340. Re: [Amps] FCC Denies Expert Linears' Request for Waiver of 15 dB Rule; Long off topic reply (score: 1): Author: Glen Zook via Amps <amps@contesting.com>; Date: Mon, 2 Jan 2017 16:09:38 +0000 (UTC); The Novice Class license eventually became renewable and there are still a few Novice Class licensees remaining today. However, no new Novice Class licenses are being issued. It is the same with Ad; /archives//html/Amps/2017-01/msg00023.html (12,465 bytes)

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