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Total 9 documents matching your query.

1. Topband: Hybrid Coupler (score: 1): Author: k6se@juno.com (k6se@juno.com); Date: Thu, 7 Sep 2000 18:22:51 -0700; Has anyone built and used the hybrid coupler described in ON4UN's "Low-Band DXing" book? It's for feeding a pair of phased verticals with 90-degree phasing. I'm interested in knowing what type of cap; /archives//html/Topband/2000-09/msg00031.html (7,758 bytes)
2. Topband: Hybrid Coupler (score: 1): Author: nr1dx@cyberportal.net (NR1DX); Date: Fri, 08 Sep 2000 07:03:11 -0400; Earl I have not built the specific 90 degree hybrid in ON4UN's book but I have built several splitters and phase shift networks using discreet components with excellent results. The thing to remember; /archives//html/Topband/2000-09/msg00032.html (8,580 bytes)
3. Topband: Hybrid Coupler (score: 1): Author: w8ji@contesting.com (Tom Rauch); Date: Fri, 8 Sep 2000 08:49:20 -0400; This may be unpopular, but I never use hybrid couplers. When an antenna is phased, you typically need equal currents in the elements. A hybrid coupler or splitter does nothing to guarantee that. It; /archives//html/Topband/2000-09/msg00033.html (8,797 bytes)
4. Topband: Hybrid Coupler (score: 1): Author: herbs@vitelcom.net (Herbert Schoenbohm); Date: Fri, 08 Sep 2000 10:20:29 -0300; Earl, A good source for high current mica transmitting capacitors is Nebraska Surplus Sales 800-244-4567 or http://www.surplusales.com The have a wide selection of broadcast type G1, G2, or G3 series; /archives//html/Topband/2000-09/msg00034.html (7,903 bytes)
5. Topband: Hybrid Coupler (score: 1): Author: W8JI@contesting.com (Tom Rauch); Date: Fri, 8 Sep 2000 10:55:08 -0400; Brand new HT57s cost about $15-20 from HEC, if they will sell to you. The problem with higher value capacitors is they have high ESR, and heat. They also have high capacitance drift with temperature; /archives//html/Topband/2000-09/msg00035.html (8,725 bytes)
6. Topband: Hybrid Coupler (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Sat, 9 Sep 2000 16:15:28 +0200; In a four ports hybrid coupler the rate and phase between the output and coupled port is fixed. The fourth terminated port serves to absorb the energy that's not dissipated, or by the main output loa; /archives//html/Topband/2000-09/msg00040.html (8,078 bytes)
7. Topband: Hybrid Coupler (score: 1): Author: nr1dx@cyberportal.net (NR1DX); Date: Sat, 09 Sep 2000 10:28:32 -0400; I believe (but may be mistaken) that the hybrid coupler made of L's and C's as described in ON4UN's book are useful only for a single band. Within the confines of that single band the data presented; /archives//html/Topband/2000-09/msg00041.html (7,601 bytes)
8. Topband: Hybrid Coupler (score: 1): Author: i4jmy@iol.it (Maurizio Panicara); Date: Sat, 9 Sep 2000 17:22:08 +0200; I'm generally speaking with no references to ON4UN book or his specific project. The hybrid couplers I know (and the magic Tee derivations) are broadband directional couplers where phase between port; /archives//html/Topband/2000-09/msg00042.html (7,641 bytes)
9. Topband: Hybrid Coupler (score: 1): Author: k6se@juno.com (k6se@juno.com); Date: Sat, 9 Sep 2000 11:33:41 -0700; The hybrid coupler in ON4UN's book is a single-band device for feeding 2-el verticals in quadrature. One output is lagging 90 degrees from the other. Feedlines to the 50-ohm verticals must be 1/4-wav; /archives//html/Topband/2000-09/msg00043.html (7,441 bytes)

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