Search String: Display: Description: Sort:

Results:

References: [ +from:w7ry@centurytel.net: 284 ]

Total 284 documents matching your query.

261. Re: [Amps] Need pilot lamp for DTR-2000 (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 28 Oct 2015 20:54:01 -0700
The bulb comes out of the lense AKA jewel. They are plentiful. 73 Jim W7RY The Dentron DTR-2000 has three front pilot lamps....green, ready (after warm up timer)red, on when transmitting.red, on when
/archives//html/Amps/2015-10/msg00065.html (8,275 bytes)

262. Re: [Amps] Tl 922 mods (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 28 Oct 2015 20:55:45 -0700
Sequencing of the relays is totally un-necessary, IF the the relays are energized BEFORE RF is sent from the exciter. 73 Jim W7RY W8ZR designed a sequencer board sold by Harbach which will protect yo
/archives//html/Amps/2015-10/msg00066.html (9,601 bytes)

263. Re: [Amps] Heath SB1000 no power out on 10 and 15 (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 28 Oct 2015 21:08:48 -0700
Short out the contacts with a piece of wire and try it again. That will tell you if the band switch is bad. What is the input SWR on the bands that dont work? 73 Jim W7RY So how does one know if the
/archives//html/Amps/2015-10/msg00067.html (10,494 bytes)

264. Re: [Amps] Tl 922 mods (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 28 Oct 2015 21:09:29 -0700
My TL922 QSK boards are here: http://www.ebay.com/itm/281841972718?ssPageName=STRK:MESELX:IT&_trksid=p3984.m1555.l2649 Based on the Richard Measures info. 73 Jim W7RY Also see: http://somis.org/ Ther
/archives//html/Amps/2015-10/msg00068.html (11,653 bytes)

265. Re: [Amps] Tl 922 mods (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 28 Oct 2015 21:32:05 -0700
Nice boards. Great idea on the LEDs. But really PRICY! And Don I see you also subscribe to Rich's parasitic myths and how to cure them. As well as the filament voltage "issues" which I believe are ov
/archives//html/Amps/2015-10/msg00070.html (12,285 bytes)

266. [Amps] Help Identifying a Triad Transformer (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sat, 31 Oct 2015 22:14:50 -0700
Does anyone know what a Triad 69437 transformer specifications is? That number is on the top bell housing (along with the Triad logo) as well as the paper wrappings on the bottom of the unit. Transfo
/archives//html/Amps/2015-11/msg00005.html (6,808 bytes)

267. Re: [Amps] Amp Layout (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 11 Nov 2015 21:34:15 -0800
Check my 8877 amplifier construction here: http://s900.photobucket.com/user/w7ry/library/8877%20Amplifier 73 Jim W7RY Hi all Doing a preliminary layout of an 887 amp. Assuming adequate airflow, and ½
/archives//html/Amps/2015-11/msg00061.html (8,103 bytes)

268. Re: [Amps] Amp Component Spacing? (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 11 Nov 2015 21:40:48 -0800
What bands do you want to cover? 73 Jim W7RY Hi all Doing a prelim layout of an 887 amp. Assuming adequate airflow, and assuming ½ Dia spacing of air coils, any guides for c1, c2 (both Vac Var) other
/archives//html/Amps/2015-11/msg00062.html (7,954 bytes)

269. [Amps] Eimac Tube Question 3CX1200A7 (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 11 Nov 2015 21:38:07 -0800
Give him is money back (less shipping) and sell it to someone else. Sounds like he has buyers remorse? 73 and good luck. Jim W7RY Gents: I am quite happy to report that when I installed the 3CX1200A7
/archives//html/Amps/2015-11/msg00063.html (8,692 bytes)

270. Re: [Amps] Measuring Grid Current in GG Amp (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Wed, 11 Nov 2015 21:40:03 -0800
Why dont you want to float the ground? It's easy to protect circuitry with a properly connected diode along with the resistor between B- and ground. Enlighten us please Charlie. 73 Jim W7RY Folks In
/archives//html/Amps/2015-11/msg00065.html (8,401 bytes)

271. Re: [Amps] Amp Layout (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Thu, 12 Nov 2015 19:50:17 -0800
Thanks Steve! 73 Jim W7RY http://s900.photobucket.com/user/w7ry/library/8877%20Amplifier Beeeooootiful! _______________________________________________ Amps mailing list Amps@contesting.com http://li
/archives//html/Amps/2015-11/msg00086.html (8,132 bytes)

272. [Amps] Fw: 8877 amp (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Tue, 17 Nov 2015 20:52:39 -0800
Thanks Jeff... The displays are simply cheap (EBay specials from China) digital voltmeters without decimal places. The pots are 10 turn linear taper and geared down to 1:3 So 3 turns on the cap is on
/archives//html/Amps/2015-11/msg00116.html (8,035 bytes)

273. Re: [Amps] Amp Layout (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sat, 21 Nov 2015 15:46:30 -0800
Thanks Bill. No the large circuit board is a WD7S Triode board. Has all the metering, filament timer, relay switching, grid and plate overcurrent, etc all on one board. No stepper motors all manual t
/archives//html/Amps/2015-11/msg00141.html (9,114 bytes)

274. Re: [Amps] Ameritron ALS 500M (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Thu, 3 Dec 2015 00:11:29 -0800
Jim....Better look at the Kenwood TS-480H. 200 watts, 12 volts. 73 Jim W7RY Al - Interesting comment. It will be easy enough to measure the two tone IMD as a function of voltage. I assume the higher
/archives//html/Amps/2015-12/msg00016.html (9,038 bytes)

275. Re: [Amps] TL-922A Filament Transformer (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Tue, 22 Dec 2015 09:26:39 -0800
They are usually on EBay. There is a fellow in Main that will rewind transformers. He does good work. He rewound a Collins 516F2 choke for me. http://members.tripod.com/tubes_tubes_tubes/transformerr
/archives//html/Amps/2015-12/msg00050.html (9,035 bytes)

276. Re: [Amps] SB 220 Exploding Resistor (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Sun, 17 Jan 2016 21:35:25 -0800
You either had (momentary arc) or have a shorted tube. Be careful with the way the bias on the relay is wired. If the cathode shorts to ground, you can burn up the filament transformer by shorting ou
/archives//html/Amps/2016-01/msg00030.html (9,155 bytes)

277. Re: [Amps] SB 220 Exploding Resistor (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Mon, 18 Jan 2016 07:56:40 -0800
Yes there is. Move R27 to me in series with the 120 volt bias and the center tap of the filament transformer. So if a there is a filament to grid short, it wont short out the 120 volt bias supply. If
/archives//html/Amps/2016-01/msg00042.html (10,122 bytes)

278. Re: [Amps] SB 220 Exploding Resistor (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Thu, 21 Jan 2016 20:20:52 -0800
And it would make quite a blow torch powered by high voltage.... Start an arc with 2 electrodes 1/8" (what is left of a surface mount resistor) apart with 3000+ volts and see what happens! 73 Jim W7R
/archives//html/Amps/2016-01/msg00060.html (13,611 bytes)

279. Re: [Amps] SG-500 ALC Interface to Kenwood TS-480HX (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Thu, 28 Jan 2016 17:32:53 -0800
Why not just adjust the power output control on the front of the radio? Or does the radio have ALC overshoot.. I dont the the TS-480 has this problem... This isn't rocket surgery! 73 Jim W7RY Given t
/archives//html/Amps/2016-02/msg00004.html (10,833 bytes)

280. Re: [Amps] Shunt resistors for a bridge made of 6A10 diodes in (score: 1)
Author: "Jim W7RY" <w7ry@centurytel.net>
Date: Tue, 2 Feb 2016 16:28:30 -0800
I've not used equalizing resistors for years. I use 1N5408s and can't remember having a failure. 73 Jim W7RY G?day I am refurbishing the power supply board in my Alpha 91b and am going to replace the
/archives//html/Amps/2016-02/msg00018.html (10,480 bytes)

Current List: 261 - 280
Page: [1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12] [13] [14] [15]
This search system is powered by Namazu