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Total 5 documents matching your query.

1. Re: [TowerTalk] RF current meter (score: 1): Author: K4SAV <RadioIR@charter.net>; Date: Fri, 15 Jun 2007 23:32:45 -0500; RF current meters are good tools. Real handy for phased arrays and debugging misc antenna problems. I just recently built one, since I had this very nice 50 uA meter that needed a home. I took the si; /archives//html/Towertalk/2007-06/msg00484.html (14,513 bytes)
2. Re: [TowerTalk] RF current meter (score: 1): Author: "Rick Karlquist" <richard@karlquist.com>; Date: Fri, 15 Jun 2007 22:52:48 -0700 (PDT); Tektronix sells various current probes, some AC coupled, some DC coupled, some clip on and some where you have to pass a wire through them. I own various models of these. They do not add any signific; /archives//html/Towertalk/2007-06/msg00487.html (11,190 bytes)
3. Re: [TowerTalk] RF current meter (score: 1): Author: Ian White GM3SEK <gm3sek@ifwtech.co.uk>; Date: Sat, 16 Jun 2007 14:41:31 +0100; It is important to terminate the secondary winding with a low-value resistor. If you do, then even an RFI suppression bead will act as a transformer with a very low insertion impedance in the main li; /archives//html/Towertalk/2007-06/msg00491.html (10,767 bytes)
4. Re: [TowerTalk] RF current meter (score: 1): Author: K4SAV <RadioIR@charter.net>; Date: Sat, 16 Jun 2007 10:09:37 -0500; Thanks for the reply Ian. Yes, this makes sense. I guess I wasn't thinking too clearly when building this, however I did test some of the large ferrite split beads to see what they did to the circuit; /archives//html/Towertalk/2007-06/msg00493.html (11,606 bytes)
5. Re: [TowerTalk] RF current meter (score: 1): Author: K4SAV <RadioIR@charter.net>; Date: Sat, 16 Jun 2007 16:20:11 -0500; Here is some additional information on the RF current meter I made. This was prompted by GM3SEK's comment about core loss. His comments were correct, so that prompted me to go back and see why my mea; /archives//html/Towertalk/2007-06/msg00501.html (13,218 bytes)

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