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References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*LF\:\s+iron\s+powder\s+toroid\s+cores\s*$/: 7 ]

Total 7 documents matching your query.

1. LF: iron powder toroid cores (score: 1): Author: Rik Strobbe <[email protected]>; Date: Fri, 30 Aug 2013 07:30:20 +0000; Dear all, I intend to replace the air coils in the LPF on my 475 kHz transmitter by toroid core coils. I have a stock of T200-2 cores but for the power level want to get (500W would be required to ge; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-08/msg00103.html (14,538 bytes)
2. RE: LF: iron powder toroid cores (score: 1): Author: Rik Strobbe <[email protected]>; Date: Fri, 30 Aug 2013 10:44:26 +0000; Hi Christian, according to the "mini ringcore calculator" (by DL5SWB) it is just on the edge (a flux of 223 G while 221 G is the max. flux). But as I have sufficient T200-2 cores I prefer to be on th; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-08/msg00119.html (12,886 bytes)
3. RE: LF: iron powder toroid cores (score: 1): Author: Rik Strobbe <[email protected]>; Date: Fri, 30 Aug 2013 12:50:32 +0000; unless you want to work VK or ZL ;-) 73, Rik ON7YD - OR7T ________________________________________ Van: [email protected] [[email protected]] namens C. Groeger [aot.; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-08/msg00120.html (13,893 bytes)
4. RE: LF: iron powder toroid cores (score: 1): Author: "C. Groeger" <[email protected]>; Date: Fri, 30 Aug 2013 15:01:52 +0200; Rik, With 500 w there is no need for qrs anymore ;-) You can go on CW! 73 Christian Groeger; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-08/msg00121.html (12,506 bytes)
5. RE: LF: iron powder toroid cores (score: 1): Author: Rik Strobbe <[email protected]>; Date: Fri, 30 Aug 2013 18:57:22 +0000; Hello Stefan, OK, I will give it a try with a single T200-2. To ease my consience I will add a fan to have some forced air cooling ;-) 73, Rik ON7YD - OR7T Van: [email protected] [ow; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-08/msg00122.html (13,420 bytes)
6. Re: LF: iron powder toroid cores (score: 1): Author: "C. Groeger" <[email protected]>; Date: Fri, 30 Aug 2013 12:09:40 +0200; Hi Rik, One T200_2 is enough for that power. I tried it on 160m at 1000w. Temperature was abaout 40C. Hpe cu on 630 Df5qg Christian Groeger; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-08/msg00235.html (10,873 bytes)
7. Re: LF: iron powder toroid cores (score: 1): Author: Stefan Schäfer <[email protected]>; Date: Fri, 30 Aug 2013 15:50:20 +0200; Hello Rik, A T200-2 will have no problem with 500W on 475 kHz! Belive me :-) 73, Stefan/DK7FC Am 30.08.2013 09:30, schrieb Rik Strobbe: Dear all, I intend to replace the air coils in the LPF on my 47; /rsgb_lf_group-archives/html/rsgb_lf_group/2013-08/msg00236.html (12,230 bytes)

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