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1. [TenTec] Omni V power limits (score: 1): Author: Bob Towers <mm0rkt@gmx.com>; Date: Thu, 01 Jul 2010 11:12:46 +0100; I run a lot of digital modes and normally keep the power below 50 watts. Just occasionally - ie in contests - I need a little more power, especially using RTTY. What's the maximum power I could run u; /archives//html/TenTec/2010-07/msg00000.html (6,160 bytes)
2. Re: [TenTec] Omni V power limits (score: 1): Author: k3miy@csonline.net; Date: Thu, 1 Jul 2010 08:33:00 -0400; Bob For 100% duty cycle, run no more than 50 watts, unless you have good ventilation. Ron K3MIY -- This mail sent through CSOnline Webmail http://webmail.csonline.net ________________________________; /archives//html/TenTec/2010-07/msg00001.html (7,628 bytes)
3. Re: [TenTec] Omni V power limits (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>; Date: Thu, 01 Jul 2010 08:39:13 -0500; Part of the reason for running low power with the digital modes is intermod distortion that causes increased bandwidth, and part is the available power dissipation of the radio. I have confidence the; /archives//html/TenTec/2010-07/msg00002.html (8,527 bytes)
4. Re: [TenTec] Omni V power limits (score: 1): Author: "Walt Amos" <waltk8cv4612amos@att.net>; Date: Thu, 1 Jul 2010 11:12:24 -0400; I would think you could run 100 watts in a contest WITH THE TENTEC FAN MOD ( $49 USD ) ON THE HEAT SINK! Another option would be a computer fan behind the rig and one behind the power supply on some; /archives//html/TenTec/2010-07/msg00003.html (9,687 bytes)
5. Re: [TenTec] Omni V power limits (score: 1): Author: "CSM$r$ Gary Huber" <glhuber@msn.com>; Date: Thu, 1 Jul 2010 11:22:19 -0500; More important than power is a clean signal when using PSK-31. A QRP but clean (low IMD) signal is easier to copy than a stronger but dirtier (high IMD) one. During contests, those running higher pow; /archives//html/TenTec/2010-07/msg00006.html (10,326 bytes)
6. Re: [TenTec] Omni V power limits (score: 1): Author: Richards <jruing@ameritech.net>; Date: Thu, 01 Jul 2010 16:08:22 -0400; Does this sort of distortion occur if I run the rig at a moderately low power output, and let a linear amp make up the difference? In other words, if I keep the rig running real easy and clean, will; /archives//html/TenTec/2010-07/msg00009.html (8,891 bytes)
7. Re: [TenTec] Omni V power limits (score: 1): Author: "CSM$r$ Gary Huber" <glhuber@msn.com>; Date: Thu, 1 Jul 2010 15:50:59 -0500; Even if you have a clean, low distortion signal, while using an amplifier, you need to keep the output to 50W or so to avoid causing AGC compression in the receivers of the other stations in the PSK-; /archives//html/TenTec/2010-07/msg00010.html (10,567 bytes)
8. Re: [TenTec] Omni V power limits (score: 1): Author: Richards <jruing@ameritech.net>; Date: Thu, 01 Jul 2010 18:23:36 -0400; AH YES .... OK. I see I need to consider the other end of the exchange. I thought you were trying to say something more in your previous post ! Sorry if I did not get it the first time. Don't forget; /archives//html/TenTec/2010-07/msg00015.html (9,893 bytes)
9. Re: [TenTec] Omni V power limits (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Thu, 1 Jul 2010 23:41:37 -0400; And don't forget the heat sink on the power supply !! Particularly on a supply that you might be pushing pretty hard to put out 100 watts. What I do in contests - and only on RTTY - is I turn on my a; /archives//html/TenTec/2010-07/msg00018.html (11,870 bytes)
10. Re: [TenTec] Omni V power limits (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>; Date: Thu, 01 Jul 2010 22:50:47 -0500; Very good point. 73, Jerry, K0CQ _______________________________________________ TenTec mailing list TenTec@contesting.com http://lists.contesting.com/mailman/listinfo/tentec; /archives//html/TenTec/2010-07/msg00019.html (9,127 bytes)
11. Re: [TenTec] Omni V power limits (score: 1): Author: "Gary Hoffman" <ghoffman@spacetech.com>; Date: Fri, 2 Jul 2010 00:04:12 -0400; Yes, it is a very good point ! This is why I qualified my post on this subject to say "and only on RTTY." When running PSK I never go above maybe 25 watts or so. But then...it is a highly efficient t; /archives//html/TenTec/2010-07/msg00020.html (10,615 bytes)
12. Re: [TenTec] Omni V power limits (score: 1): Author: "Dr. Gerald N. Johnson" <geraldj@weather.net>; Date: Thu, 01 Jul 2010 23:58:08 -0500; Someone asked why PSK? The answer is that PSK gets good data for the weakest signal to noise ratio of any data modulation method. 73, Jerry, K0CQ _______________________________________________ TenTe; /archives//html/TenTec/2010-07/msg00022.html (9,208 bytes)

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