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References: [ +from:info@transmittersrus.com: 18 ]

Total 18 documents matching your query.

1. [Amps] MRFE6VP Datasheet (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Sun, 21 Aug 2011 08:56:15 +0100
Someone requested the datasheet. Here you go: <http://cache.freescale.com/files/rf_if/doc/data_sheet/MRFE6VP61K25H.pdf> http://cache.freescale.com/files/rf_if/doc/data_sheet/MRFE6VP61K25H.pdf David _
/archives//html/Amps/2011-08/msg00119.html (6,589 bytes)

2. [Amps] 6kW coax? (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Fri, 09 Mar 2012 09:37:54 -0800
Question for the brain trust. I am looking for a cable (possibly made in teflon or not...) with impedance around 70-75 Ohms that supports 6kW, this is for a final combiner for a 10kW transmitter. Doe
/archives//html/Amps/2012-03/msg00080.html (6,606 bytes)

3. [Amps] 6kW Coax (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Fri, 09 Mar 2012 10:13:40 -0800
Sorry folks. 100Mhz Thanks. G4ZOW _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2012-03/msg00082.html (6,645 bytes)

4. [Amps] 6kW Coax Combiner (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Fri, 09 Mar 2012 10:19:48 -0800
Hi Hal, Highest frequency would be 108.0Mhz G4ZOW _______________________________________________ Amps mailing list Amps@contesting.com http://lists.contesting.com/mailman/listinfo/amps
/archives//html/Amps/2012-03/msg00083.html (6,373 bytes)

5. [Amps] 6kW Coax (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Fri, 09 Mar 2012 10:36:26 -0800
50 Ohms we have it, but the problem is to find 75 Ohms... This is to combine 2 sides of 6kW each, total 12kW final. No need for double shilding but if that's all that is available. Thanks. Dave G4ZOW
/archives//html/Amps/2012-03/msg00084.html (6,812 bytes)

6. [Amps] 6kW Coax (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Sat, 10 Mar 2012 07:13:15 -0800
Many thanks for all the comments and suggestions. There were several suggestions of 50 ohm cables. We need 70-75 ohm. This is for use inside a rack chassis, a compact one at that, so rigid, or semi-r
/archives//html/Amps/2012-03/msg00106.html (7,275 bytes)

7. Re: [Amps] 6kW Coax (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Sat, 10 Mar 2012 08:29:51 -0800
Hi Gary, It's 52 ohm. I am looking for 70-75 ohm but I am checking the other suggestions. Thanks. Dave G4ZOW RG-17? Gary...wa6fgi _______________________________________________ Amps mailing list Amp
/archives//html/Amps/2012-03/msg00110.html (7,773 bytes)

8. Re: [Amps] 6kW Coax (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Sat, 10 Mar 2012 08:35:19 -0800
Hi Carl, Yes, it seems so. I have just fired off a mail to Allied Cable to see what they suggest. Thanks. Dave G4ZOW _______________________________________________ Amps mailing list Amps@contesting.
/archives//html/Amps/2012-03/msg00111.html (7,569 bytes)

9. [Amps] 6kW Coax (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Mon, 12 Mar 2012 08:33:36 -0800
I should like to thank everyone for their thoughts and valid opnions re the above. My colleague Luciano and I will digest everything and report back after some further work. Also thanks Steve for the
/archives//html/Amps/2012-03/msg00141.html (7,979 bytes)

10. [Amps] 6kW Coax (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Wed, 14 Mar 2012 09:25:55 -0800
Someones asked what type of combiner. It is not a complete Gysel combiner, it is like a Wilkinson but without resistors, because the resistors are in the Gysel combiner amoung the 6 x 2.5kW modules.
/archives//html/Amps/2012-03/msg00176.html (8,283 bytes)

11. [Amps] Solid state amplifiers - big ones (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Thu, 10 May 2012 09:26:20 +0100
...but Bob, Would you compete in AC or DC Sky? http://i16.photobucket.com/albums/b2/Longchamp/16X400A_Alternators.jpg http://i16.photobucket.com/albums/b2/Longchamp/TooManyWatts.jpg David G4ZOW _____
/archives//html/Amps/2012-05/msg00245.html (7,919 bytes)

12. [Amps] Which 12V VHF Device (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Fri, 15 Feb 2013 17:46:25 -0500
Can anyone tell me what devices, and how many are used in the high output 2m mobile amp's from Mirage (300W) and TE Systems (350W) and the Tokyo-Hi-Power's HL-350? Many thanks. David G4ZOW __________
/archives//html/Amps/2013-02/msg00119.html (6,421 bytes)

13. [Amps] Which 12V VHf Device (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Tue, 19 Feb 2013 18:48:24 -0500
Thanks to all for the feedback on my original question. It seems the newer Mitsubishi FETs offer better overal performance than the older bipolars but are limited to 70W out at VHF frequencies. Do an
/archives//html/Amps/2013-02/msg00145.html (7,196 bytes)

14. [Amps] Gold Clamp RF Devices (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Wed, 11 Sep 2013 09:45:45 +0100
Further to the previous posts on quick-change RF devices. Roger at BW Broadcast implemented this design around 10+ years ago. Here's a link showing a clearer view: <http://www.bwbroadcast.com/news/up
/archives//html/Amps/2013-09/msg00031.html (6,685 bytes)

15. [Amps] S/S Amp's (score: 1)
Author: "David Shapiro" <info@transmittersrus.com>
Date: Thu, 12 Sep 2013 17:03:46 +0100
It's already in production. Not quite what you're after but... <http://www.k7dyy.com/> http://www.k7dyy.com/ David G4ZOW _______________________________________________ Amps mailing list Amps@contest
/archives//html/Amps/2013-09/msg00079.html (6,995 bytes)

16. [Amps] Freescale's 1.25kW (score: 1)
Author: "David" <info@transmittersrus.com>
Date: Thu, 02 Jan 2014 05:59:01 -0500
Gentlemen, I found something remarkable concerning the Freescale ldmos 1.25KW. There are two identical types, the only difference is the last number which is either R5 or R6. I have an R5. Freescale
/archives//html/Amps/2014-01/msg00006.html (6,498 bytes)

17. [Amps] Freescale (score: 1)
Author: "David" <info@transmittersrus.com>
Date: Thu, 02 Jan 2014 11:19:35 -0500
Hi Rick, So it looks like only the shipping packaging has changed. Just had 1100W out on 13MHz but then one went popL Thanks. David G4ZOW _______________________________________________ Amps mailing
/archives//html/Amps/2014-01/msg00007.html (6,398 bytes)

18. [Amps] High current RF caps. (score: 1)
Author: "David" <info@transmittersrus.com>
Date: Mon, 06 Jan 2014 13:01:52 -0500
Alan, You're not looking hard enough. ATC are represented in the UK by AVX : http://www.avx.com/ UK contact here: http://www.applegate.co.uk/avx-0016932.html There only seems to be the corporate webs
/archives//html/Amps/2014-01/msg00033.html (6,627 bytes)

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