From rayn6vr at gmail.com Mon Sep 4 17:17:46 2017 From: rayn6vr at gmail.com (Raymond Benny) Date: Mon, 4 Sep 2017 14:17:46 -0700 Subject: [Hi-zreceivingarraydiscussions] Cut/nick on feed line Message-ID: Hello Lee & All, I just noticed a cut in one of my Hi-z 4 sq feed lines. It is about 1 1/2 inch long, the outer shield is cut for about 1 in. The inner aluminum shield was not cut. Think I must have done this awhile back using my rider mover. Anyway, I laid the shield back in place the best I could, but about 1/2 in is missing. I then coated the cut with RTV, let it dry, then covered with 2 layers of Scotch 66 tape. After that, I coated the tape with plumbers liquid tape. All seems OK, the voltage is 4.93v on that vertical. The voltages range from 4.93 to 4.98v, not enough to be concerned, I wouldn't think. Any thoughts on this repair? Can't imagine that it would make any difference... Let me know what you think. 73 & tnx, Ray, N6VR Nr Prescott, AZ From contact at hizantennas.com Mon Sep 4 22:31:21 2017 From: contact at hizantennas.com (contact at hizantennas.com) Date: Mon, 4 Sep 2017 19:31:21 -0700 Subject: [Hi-zreceivingarraydiscussions] Cut/nick on feed line In-Reply-To: References: Message-ID: <000901d325ef$10338660$309a9320$@hizantennas.com> Hello Ray, Well I think you better plan on replacing that cable run. I think the damage was done electrically when the aluminum was exposed to the air for whatever length of time. Aluminum oxidizes very quickly in open air. You may not have trouble now but my opinion is you will later just when you need the array. Remember Ray, that the cables connecting the elements were supposed to be all from the same roll and the same length. If you don't still have some of that same roll, my best advice would be to change all four cables which will insure the best performance. Or you can electrically measure the length of the cables to match them to a single new one if you have suitable equipment. Lee K7TJR Hi-Z Antennas -----Original Message----- From: Hi-zreceivingarraydiscussions [mailto:hi-zreceivingarraydiscussions-bounces at hizantennas.com] On Behalf Of Raymond Benny Sent: Monday, September 04, 2017 2:18 PM To: Lee, K7TJR Subject: [Hi-zreceivingarraydiscussions] Cut/nick on feed line Hello Lee & All, I just noticed a cut in one of my Hi-z 4 sq feed lines. It is about 1 1/2 inch long, the outer shield is cut for about 1 in. The inner aluminum shield was not cut. Think I must have done this awhile back using my rider mover. Anyway, I laid the shield back in place the best I could, but about 1/2 in is missing. I then coated the cut with RTV, let it dry, then covered with 2 layers of Scotch 66 tape. After that, I coated the tape with plumbers liquid tape. All seems OK, the voltage is 4.93v on that vertical. The voltages range from 4.93 to 4.98v, not enough to be concerned, I wouldn't think. Any thoughts on this repair? Can't imagine that it would make any difference... Let me know what you think. 73 & tnx, Ray, N6VR Nr Prescott, AZ _______________________________________________ Hi-zreceivingarraydiscussions mailing list Hi-zreceivingarraydiscussions at hizantennas.com http://mail.hizantennas.com/mailman/listinfo/hi-zreceivingarraydiscussions_h izantennas.com From w5xz at att.net Mon Sep 4 22:29:05 2017 From: w5xz at att.net (dan edwards) Date: Tue, 5 Sep 2017 02:29:05 +0000 (UTC) Subject: [Hi-zreceivingarraydiscussions] Cut/nick on feed line In-Reply-To: References: Message-ID: <813218561.2806077.1504578545260@mail.yahoo.com> you MIGHT be ok, but nothing like a quick TDR scan, if you?have a vna or similar...had same prob here, NW ant feedline...fixed.. my dg8saq VNA found the fault down to the foot, fwiw?gotta love that thing, huh? JM2C, 73, w5xz From: Raymond Benny To: "Lee, K7TJR" Sent: Monday, September 4, 2017 4:17 PM Subject: [Hi-zreceivingarraydiscussions] Cut/nick on feed line Hello Lee & All, I just noticed a cut in one of my Hi-z 4 sq feed lines. It is about 1 1/2 inch long, the outer shield is cut for about 1 in. The inner aluminum shield was not cut. Think I must have done this awhile back using my rider mover. Anyway, I laid the shield back in place the best I could, but about 1/2 in is missing. I then coated the cut with RTV, let it dry, then covered with 2 layers of Scotch 66 tape. After that, I coated the tape with plumbers liquid tape. All seems OK, the voltage is 4.93v on that vertical. The voltages range from 4.93 to 4.98v, not enough to be concerned, I wouldn't think. Any thoughts on this repair? Can't imagine that it would make any difference... Let me know what you think. 73 & tnx, Ray, N6VR Nr Prescott, AZ _______________________________________________ Hi-zreceivingarraydiscussions mailing list Hi-zreceivingarraydiscussions at hizantennas.com http://mail.hizantennas.com/mailman/listinfo/hi-zreceivingarraydiscussions_hizantennas.com From w5xz at att.net Mon Sep 4 22:36:48 2017 From: w5xz at att.net (dan edwards) Date: Tue, 5 Sep 2017 02:36:48 +0000 (UTC) Subject: [Hi-zreceivingarraydiscussions] Cut/nick on feed line In-Reply-To: <000901d325ef$10338660$309a9320$@hizantennas.com> References: <000901d325ef$10338660$309a9320$@hizantennas.com> Message-ID: <814713409.2804026.1504579008223@mail.yahoo.com> i can second that also....my fault had turned the aluminum braid and tape?to virtual dust....had to trim back a ways, toward the shack, to find good stuff;?then splice with a fresh pair of F males and and f barrel, and some leftover?feedline from the original roll back out to the element... and mine is shallow buried...6" + / -, too !!...pulling that stuff up was NOT?fun... w5xz From: "contact at hizantennas.com" To: 'Hi-Z Receiving Array Discussions' Sent: Monday, September 4, 2017 9:31 PM Subject: Re: [Hi-zreceivingarraydiscussions] Cut/nick on feed line Hello Ray, ? Well I think you better plan on replacing that cable run. I think the damage was done electrically when the aluminum was exposed to the air for whatever length of time. Aluminum oxidizes very quickly in open air. You may not have trouble now but my opinion is you will later just when you need the array. ? Remember Ray, that the cables connecting the elements were supposed to be all from the same roll and the same length. If you don't still have some of that same roll, my best advice would be to change all four cables which will insure the best performance. Or you can electrically measure the length of the cables to match them to a single new one if you have suitable equipment. Lee K7TJR Hi-Z Antennas -----Original Message----- From: Hi-zreceivingarraydiscussions [mailto:hi-zreceivingarraydiscussions-bounces at hizantennas.com] On Behalf Of Raymond Benny Sent: Monday, September 04, 2017 2:18 PM To: Lee, K7TJR Subject: [Hi-zreceivingarraydiscussions] Cut/nick on feed line Hello Lee & All, I just noticed a cut in one of my Hi-z 4 sq feed lines. It is about 1 1/2 inch long, the outer shield is cut for about 1 in. The inner aluminum shield was not cut. Think I must have done this awhile back using my rider mover. Anyway, I laid the shield back in place the best I could, but about 1/2 in is missing. I then coated the cut with RTV, let it dry, then covered with 2 layers of Scotch 66 tape. After that, I coated the tape with plumbers liquid tape. All seems OK, the voltage is 4.93v on that vertical. The voltages range from 4.93 to 4.98v, not enough to be concerned, I wouldn't think. Any thoughts on this repair? Can't imagine that it would make any difference... Let me know what you think. 73 & tnx, Ray, N6VR Nr Prescott, AZ _______________________________________________ Hi-zreceivingarraydiscussions mailing list Hi-zreceivingarraydiscussions at hizantennas.com http://mail.hizantennas.com/mailman/listinfo/hi-zreceivingarraydiscussions_h izantennas.com _______________________________________________ Hi-zreceivingarraydiscussions mailing list Hi-zreceivingarraydiscussions at hizantennas.com http://mail.hizantennas.com/mailman/listinfo/hi-zreceivingarraydiscussions_hizantennas.com