- 1. Topband: Arching Prevention (score: 1)
- Author: "Chortek, Robert L" <rlc@berliner.com>
- Date: Wed, 9 Nov 2005 11:59:21 -0800
- Hello Topbanders, I have a relay system that switches a base loading coil in and out of a 60 foot vertical. While on 160, the open contacts across the 80 meter relay arch, interfering (albeit intermi
- /archives//html/Topband/2005-11/msg00071.html (7,501 bytes)
- 2. Re: Topband: Arching Prevention (score: 1)
- Author: "Tom McAlee" <tom@klient.com>
- Date: Wed, 9 Nov 2005 15:30:05 -0500
- I had the same problem, to the point where it burnt up my relays and the inside of the relay box completely. I tried using vacuum relays and the array solutions relays. The vacuum relays at least la
- /archives//html/Topband/2005-11/msg00073.html (7,345 bytes)
- 3. Re: Topband: Arching Prevention (score: 1)
- Author: "Chortek, Robert L" <rlc@berliner.com>
- Date: Wed, 9 Nov 2005 16:18:23 -0800
- I am getting arching in my 80/160 meter vertical switching network. I have three relays, all run in parallel. The "bottom" of each is attached to the feed line. All relays are in the open position un
- /archives//html/Topband/2005-11/msg00077.html (8,605 bytes)
- 4. Re: Topband: Arching Prevention (score: 1)
- Author: "Tom Rauch" <w8ji@contesting.com>
- Date: Wed, 9 Nov 2005 19:36:02 -0500
- and out of a the 80 meter meter operation at the top of a way to This was just on an eHam Elmers thread also. The current at each coil terminal is essentially equal so long as the coil capacitance t
- /archives//html/Topband/2005-11/msg00078.html (10,159 bytes)
- 5. Re: Topband: Arching Prevention (score: 1)
- Author: "John Kaufmann" <jkaufmann@alum.mit.edu>
- Date: Wed, 09 Nov 2005 20:14:20 -0500
- I wrote this and made a typo here. It should read "...across the two N.C. contacts for 80m..." and not "N.O." Sorry for the confusion. The other point I made to made to Bob (AA6VB) off-list was that
- /archives//html/Topband/2005-11/msg00079.html (7,992 bytes)
- 6. Re: Topband: Arching Prevention (score: 1)
- Author: "Tom Rauch" <w8ji@contesting.com>
- Date: Wed, 9 Nov 2005 20:42:57 -0500
- configuration. The goes to the N.C. contacts On 80m the to the I may be missing something, but I don't get it....... You still have the full 160 meter vertical's base voltage from one contact to gro
- /archives//html/Topband/2005-11/msg00080.html (8,945 bytes)
- 7. Re: Topband: Arching Prevention (score: 1)
- Author: "John Kaufmann" <jkaufmann@alum.mit.edu>
- Date: Wed, 09 Nov 2005 21:45:31 -0500
- I made a typo that was confusing and erroneous. I fixed that. "unused" 80m relay contacts (which are at best a few millimeters apart) during 160m operation with the loading coil. It's no wonder there
- /archives//html/Topband/2005-11/msg00081.html (8,671 bytes)
- 8. Re: Topband: Arching Prevention (score: 1)
- Author: "Tom Rauch" <w8ji@contesting.com>
- Date: Wed, 9 Nov 2005 23:03:04 -0500
- millimeters. I high voltage I don't follow that John. There is still high voltage across contact gaps. On 160 you'd have this: Ant 160 coil top--NO-C--NC--jmp 160 coil bot--NO-C--NC--jmp Coax If the
- /archives//html/Topband/2005-11/msg00083.html (9,494 bytes)
- 9. Re: Topband: Arching Prevention (score: 1)
- Author: "SM6CNN" <sm6cnn@telia.com>
- Date: Thu, 10 Nov 2005 23:49:07 +0100
- The I am using the Lannabo 160/80m vertical, www.lannabo.se . The switching is made using two solenoids moving a very sturdy contact arrangement achieving about a 10mm gap. No arching with 1kW outpu
- /archives//html/Topband/2005-11/msg00092.html (8,467 bytes)
- 10. Topband: Arching Prevention (score: 1)
- Author: "LA5HE Ragnar Otterstad" <la5he@otterstad.dk>
- Date: Fri, 11 Nov 2005 00:29:40 +0100
- You may want to take a look on the TITANEX web-.page. The relay they use in their ATUs for the verticals is available for sale, it seems. I guess WX0B can help you getting them 73 " RAG " Ragnar Otte
- /archives//html/Topband/2005-11/msg00093.html (7,999 bytes)
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