Mail Archive Search: <+subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+Amp\s+for\s+444\s+mHz\s*$/>

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[Amps\]\s+Amp\s+for\s+444\s+mHz\s*$/: 13 ]

Total 13 documents matching your query.

1. [Amps] Amp for 444 mHz (score: 1): Author: Jeff Dorsey via Amps <amps@contesting.com>; Date: Tue, 27 Feb 2018 15:02:00 -0500; Dear All: I need an amp for 444 mHz band, somewhere between 100 and 400 watts output, preferrably from EU but also possibly from USA. With kind regards, Jeff tz4am@aol.com ___________________________; /archives//html/Amps/2018-02/msg00056.html (6,432 bytes)
2. Re: [Amps] Amp for 444 mHz (score: 1): Author: Shon Edwards <sre.1966@gmail.com>; Date: Tue, 27 Feb 2018 14:33:57 -0700; Hey Jeff, here are a couple http://www.mirageamp.com/Product.php?productid=D-100-ATVN http://www.mirageamp.com/Product.php?productid=D-1010-N You can check out others. Found them on this page http://; /archives//html/Amps/2018-03/msg00000.html (7,979 bytes)
3. Re: [Amps] Amp for 444 mHz (score: 1): Author: Jeff Dorsey via Amps <amps@contesting.com>; Date: Tue, 27 Feb 2018 17:42:02 -0500; Hi Shon: Thanks for the info. I have a 70 meter run of coax and the best I can find in Mali is LMR 305, so losses have to be over 10 dB. I think I'm looking for something a bit more powerful but will; /archives//html/Amps/2018-03/msg00001.html (8,839 bytes)
4. Re: [Amps] Amp for 444 mHz (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Wed, 28 Feb 2018 18:13:52 -0500; SSB? FM? Digital? What kind of duty cycle? Mobile or home station? I'm assuming (which is never safe) you want SS. If you are willing to go new there are a number of SS amps available for FM. A q; /archives//html/Amps/2018-03/msg00003.html (8,861 bytes)
5. Re: [Amps] Amp for 444 mHz (score: 1): Author: Catherine James <catherine.james@att.net>; Date: Thu, 1 Mar 2018 13:34:32 +0000 (UTC); One option would be to put the amp in a weatherproof box at the antenna. That way any losses occur in the path from the exciter to the amp, and with reasonable exciter power you can drive the amp to; /archives//html/Amps/2018-03/msg00004.html (7,565 bytes)
6. Re: [Amps] Amp for 444 mHz (score: 1): Author: Jeff Dorsey via Amps <amps@contesting.com>; Date: Fri, 2 Mar 2018 16:15:51 -0500; Hi Cathy: That sounds like a great idea. We don't even need a box, because there is an elevator enclosure already there on the roof and then a short run to the antenna. With kind regards, Jeff Cather; /archives//html/Amps/2018-03/msg00005.html (9,439 bytes)
7. Re: [Amps] Amp for 444 mHz (score: 1): Author: Jeff Dorsey via Amps <amps@contesting.com>; Date: Fri, 2 Mar 2018 16:21:57 -0500; Thanks Roger. All good questions. Base station like net control. Duty cycle not more than 30%. Others have suggested remoting amp to the rooftop location near the antenna. With that, I think even 100; /archives//html/Amps/2018-03/msg00007.html (10,007 bytes)
8. Re: [Amps] Amp for 444 mHz (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Sat, 3 Mar 2018 01:02:51 -0500; Remoting does remove loss and at 444MHz that can be substantial, BUT nothing comes for free and remote mounting an amp creates new problems. You probably know all of the following. If so, I apologize; /archives//html/Amps/2018-03/msg00008.html (12,287 bytes)
9. Re: [Amps] Amp for 444 mHz (score: 1): Author: Jeff Dorsey via Amps <amps@contesting.com>; Date: Mon, 5 Mar 2018 19:43:22 -0500; Hi Roger: All good thoughts and no need to apologize. Some issues like static build up need to be addressed. This would go in a structure already built (top ot stairwell/dead elevator shaft). I think; /archives//html/Amps/2018-03/msg00015.html (13,566 bytes)
10. Re: [Amps] Amp for 444 mHz (score: 1): Author: "Roger (K8RI)" <k8ri@rogerhalstead.com>; Date: Wed, 7 Mar 2018 03:58:38 -0500; 45C might be pushing the ambient temp a bit. For static buildup you might find this paper of interest: http://apps.geindustrial.com/publibrary/checkout/Arresters?TNR=White%20Papers%7CArresters%7Cgene; /archives//html/Amps/2018-03/msg00017.html (15,711 bytes)
11. Re: [Amps] Amp for 444 mHz (score: 1): Author: Jeff Dorsey via Amps <amps@contesting.com>; Date: Wed, 7 Mar 2018 04:16:55 -0500; Thanks Roger. I've downloaded the paper, which is relevant not just to this project, but to our operations in general. At the time of the year when rains (and thunderstorms) haven't quite started, th; /archives//html/Amps/2018-03/msg00018.html (16,896 bytes)
12. Re: [Amps] Amp for 444 mHz (score: 1): Author: Catherine James <catherine.james@att.net>; Date: Wed, 7 Mar 2018 17:27:46 +0000 (UTC); That's one argument for a tube amp; tubes would more more comfortable than SS with that high of a temperature. If 45 watts minus losses won't drive the remote-mounted amp to the power you want, you c; /archives//html/Amps/2018-03/msg00019.html (8,826 bytes)
13. Re: [Amps] Amp for 444 mHz (score: 1): Author: Ron Youvan <ka4inm@gmail.com>; Date: Wed, 7 Mar 2018 13:07:50 -0500; I've downloaded the paper, which is relevant not just to this project, but to our operations in general. At the time of the year when rains (and thunderstorms) haven't quite started, the wind accumu; /archives//html/Amps/2018-03/msg00023.html (9,184 bytes)

Current List: 1 - 13
Page: [1]