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1. Re: [Amps] Parasitics (score: 1): Author: Steve <ve3tu@rac.ca>; Date: Fri, 22 Aug 2003 00:27:43 +0100; I guess that means that you have to oil your neutralization cct. to keep your lin e are in peak performance, hi hi. 73 Peter, de Steve VE3TU. _______________________________________________ Amps mail; /archives//html/Amps/2003-08/msg00007.html (6,725 bytes)
2. [Amps] QSK amp switching (Ts940/Alpha 86) (score: 1): Author: ve3tu@rac.ca (Steve); Date: Fri, 17 May 2002 00:16:04 +0100; Hi Paul, I built an external QSK box for an amp and I had the same problem. I put a small ferrite core with about 20 turns of thin wire on the core in series with the lead that supplies power to the; /archives//html/Amps/2002-05/msg00253.html (6,565 bytes)
3. [AMPS] Commander HF1250 and HF2500 (score: 1): Author: ve3tu@rac.ca (Steve); Date: Tue, 05 Feb 2002 23:35:11 +0000; I have a Commander HF2500 and HF1250 that I would like to sell. They are in good shape, full output, 160m through 10m, no qsk Before I put the items on ebay I would like to offer them here. email me; /archives//html/Amps/2002-02/msg00056.html (6,517 bytes)
4. [AMPS] ACOM 2000 (score: 1): Author: ve3tu@rac.ca (Steve); Date: Thu, 03 Jan 2002 02:51:16 +0000; I am interested in an Acom 2000 for a contest station. I would like any feed back from ops using them in a contest environment, any weak points and strong points or quirks? gl es 73 Steve -- FAQ on W; /archives//html/Amps/2002-01/msg00028.html (6,414 bytes)
5. [AMPS] old leds (score: 1): Author: ve3tu@rac.ca (Steve); Date: Wed, 26 Dec 2001 05:15:20 +0000; The boat anchor reflector may be a better place but I will ask here first. I am looking for some til308 and til306 led display chips. They were used in the Yaesu 301 series. I have tried most of the; /archives//html/Amps/2001-12/msg00482.html (6,443 bytes)
6. [AMPS] Another Stupid Question (score: 1): Author: ve3tu@rac.ca (Steve); Date: Thu, 29 Nov 2001 15:15:37 +0000; Hi y'all, actually where you notice the effect of the plate blocking cap is on 10m, on my home brew 8877 amp I used a 1000 pf 10 kv cap. that's the size of a hockey puck. The output on 10m is within; /archives//html/Amps/2001-11/msg00482.html (8,406 bytes)
7. [AMPS] Ameritron ALS-600 (score: 1): Author: ve3tu@rac.ca (Steve); Date: Fri, 19 Oct 2001 14:11:31 +0100; Hi Kevin, I have noticed the same operation on other rigs. If your rig has an internal tuner try it with the tuner on. I have noticed that the slow ramp up of the output is gone with the tuner on. If; /archives//html/Amps/2001-10/msg00396.html (7,030 bytes)
8. [AMPS] How to control a vacuum C ?? (score: 1): Author: ve3tu@rac.ca (Steve); Date: Wed, 31 Oct 2001 23:05:41 +0000; One of the ways to slow down a dc motor fast is with an H bridge mosfet cct. You can have forward, reverse and brake functions. The H bridge slows down the motor a lot faster than a diode, I tried it; /archives//html/Amps/2001-10/msg00518.html (7,155 bytes)
9. [AMPS] 8877 YC-157 (score: 1): Author: ve3tu@rac.ca (Steve); Date: Thu, 19 Apr 2001 02:08:40 +0100; Hi all, a friend is looking for an 8877 or YC-156 NOS or good pull. Please email direct. tu es 73 Steve -- FAQ on WWW: http://www.contesting.com/FAQ/amps Submissions: amps@contesting.com Administrati; /archives//html/Amps/2001-04/msg00429.html (6,261 bytes)
10. [AMPS] switches (score: 1): Author: ve3tu@rac.ca (Steve); Date: Sat, 10 Feb 2001 10:26:12 +0000; Hi yall, I believe that a switch that shorts out the unused taps on the tank cct. is the best way to go. The shorted coil in the tank next to the used tank portion will create a field that forces mor; /archives//html/Amps/2001-02/msg00211.html (9,579 bytes)
11. [AMPS] Band Pass Filters for Solid State Amplifiers (score: 1): Author: ve3tu@rac.ca (Steve); Date: Wed, 03 Jan 2001 05:20:27 +0000; Hi Jim, I went trough a similar exorcise with a home brew amp. I tried the circuit in the ARRL hand book using the five pole filter design. I popped the 600 v mica caps at 800 watts. The middle caps; /archives//html/Amps/2001-01/msg00086.html (9,839 bytes)
12. [AMPS] Output Pulse from ICOM 706 (score: 1): Author: ve3tu@rac.ca (Steve); Date: Mon, 15 Jan 2001 14:58:46 +0000; Hi Tom, the league does publish close in IMD receiver specs but you have to buy the extended review of the radio. Some of the radios are pretty ugly close in but as you would expect the the expensive; /archives//html/Amps/2001-01/msg00361.html (9,725 bytes)
13. [AMPS] SB-220 Glitch Resistor ??? (score: 1): Author: ve3tu@rac.ca (Steve); Date: Fri, 01 Dec 2000 16:37:11 +0000; Boy this is almost as good as the great parasitic debate. What you do is put a 25 ohm 25 watt resistor and a high voltage fuse (2A) after the capacitor bank in series with the wire going to the plate; /archives//html/Amps/2000-12/msg00011.html (10,065 bytes)
14. [AMPS] SWR Protection (score: 1): Author: ve3tu@rac.ca (Steve); Date: Fri, 01 Dec 2000 17:03:09 +0000; Talking about more interesting aspects of amps, I was wondering if anyone knows of a single chip microprocessor or pic that has 4 or 8 A/D converters in the chip that can monitor 4 input simultaneous; /archives//html/Amps/2000-12/msg00012.html (7,879 bytes)
15. [AMPS] SWR Protection (score: 1): Author: ve3tu@rac.ca (Steve); Date: Fri, 01 Dec 2000 17:48:43 +0000; --A83EFF629AA0D3C2F56BAE2E Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Thanks for the response Dave. The primary reason is to shut down the amp as fast as possible and; /archives//html/Amps/2000-12/msg00016.html (17,672 bytes)
16. [AMPS] SWR Protection (score: 1): Author: ve3tu@rac.ca (Steve); Date: Fri, 01 Dec 2000 20:08:14 +0000; Hi Bruce, like you say with a high swr the forward power increases along with the reflected power so the easiest and quickest way to shut down the amp is to monitor the forward power output and trigg; /archives//html/Amps/2000-12/msg00021.html (12,604 bytes)
17. [AMPS] SWR Protection (score: 1): Author: ve3tu@rac.ca (Steve); Date: Fri, 01 Dec 2000 22:31:15 +0000; Hi Bill, every time I transmitted into the wrong antenna the forward power on the meter goes higher and the reflected power does the same. I plan to calculate the swr and shut down the amp with a hig; /archives//html/Amps/2000-12/msg00028.html (9,614 bytes)
18. [AMPS] SWR Protection (score: 1): Author: ve3tu@rac.ca (Steve); Date: Sat, 02 Dec 2000 04:50:22 +0000; Bill I don't know this for sure but what I have read in the hand books is that when you have a high swr on the line to the antenna the forward power is reflected back from the load and is added to th; /archives//html/Amps/2000-12/msg00033.html (10,425 bytes)
19. [AMPS] SWR Protection (score: 1): Author: ve3tu@rac.ca (Steve); Date: Mon, 04 Dec 2000 03:14:47 +0000; If anyone is interested visit this site http://www.ibelings.com/n4ip/sskw/ It describes the problem of using a microprocessor with a single ad converter to calculate swr. The 30 usec delay between re; /archives//html/Amps/2000-12/msg00048.html (9,289 bytes)
20. [AMPS] SWR Protection (score: 1): Author: ve3tu@rac.ca (Steve); Date: Tue, 05 Dec 2000 20:58:02 +0000; Hi Tom, it is plain to see that there are two types of people that are discussing this swr protection system. The ones that have blown expensive rf transistors like you Peter and I and probably sever; /archives//html/Amps/2000-12/msg00085.html (8,102 bytes)

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