Search String: Display: Description: Sort:

Results:

References: [ +from:dj7ww@t-online.de: 172 ]

Total 172 documents matching your query.

161. Re: [TowerTalk] SP7GXP antennas? (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Thu, 21 Oct 2021 22:26:27 +0200
I guess those who just copy antennas also donīt take the effort of calculations or measurements. 73 Peter, DJ7WW Sounds like they're specifying gain relative to isotropic, hence an extra 2.1 dB. 73..
/archives//html/Towertalk/2021-10/msg00125.html (9,781 bytes)

162. Re: [TowerTalk] 160M Antenna puzzlement (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Mon, 20 Dec 2021 12:12:40 +0100
No, R is too high, should read about 19 ohms in a lossless environment. I would improve the radial system to get the impedance lower and then use a 1:2 unun to transform to 50 ohms. 73 Peter, DJ7WW I
/archives//html/Towertalk/2021-12/msg00053.html (9,391 bytes)

163. Re: [TowerTalk] FCP vs On ground.txt (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Fri, 21 Jan 2022 22:12:33 +0100
And end up with a pleasantly quiet signal Wow, All this Epsilon, Lambda, Sigma, and e" and e" stuff is a bit much for most of us lowly hams. Just put it up tune it for lowest SWR and have fun working
/archives//html/Towertalk/2022-01/msg00081.html (8,641 bytes)

164. Re: [TowerTalk] Resistor Across a Choke Balun (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Sat, 11 Jun 2022 15:39:53 +0200
I would use >1Mohm resistors from both terminals to the boom. 73 Peter, DJ7WW I'm putting a Balun Design 1115t on an A4s. Here is the Ozarks, we have *lightning!* But I want to put a resistor across
/archives//html/Towertalk/2022-06/msg00018.html (8,226 bytes)

165. Re: [TowerTalk] Increasing the Inside diameter of a 1 inch outside diameter Alum pipe. (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Wed, 31 Aug 2022 20:16:52 +0200
Metric sizes do telescope but with larger wall thicknesses like 2 and 1.5mm. 73 Peter, DJ7WW --Original Message-- From: TowerTalk [mailto:towertalk-bounces@contesting.com] On Behalf Of Grant Saviers
/archives//html/Towertalk/2022-08/msg00202.html (8,628 bytes)

166. Re: [TowerTalk] 15 meter beam on 40 meter tower ? (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Thu, 1 Sep 2022 19:11:36 +0200
My 40m yagi is 5m above the 15m yagi and influences the front to back on 15m, but by far less then the second 15m yagi 14m below it. 73 Peter, DJ7WW Why would the 40m beam be effected by the 15m? It
/archives//html/Towertalk/2022-09/msg00004.html (8,424 bytes)

167. Re: [TowerTalk] 16om vertical and the number of radials (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Fri, 2 Dec 2022 16:42:52 +0100
What is the simulated radiation resistance with only 32 radials? Resistance above 37 ohms reduce the efficiency. I needed >90 radials on my 160m and 80m verticals to bring it below 40 ohms. 73 Peter,
/archives//html/Towertalk/2022-12/msg00005.html (8,656 bytes)

168. Re: [TowerTalk] Prosistel 61D (score: 1)
Author: "Peter Voelpel" <dj7ww@t-online.de>
Date: Sun, 25 Dec 2022 10:52:58 +0100
I had the problem with a not engaged worm with 3 of my 4 PST2051. https://a4.pbase.com/o6/91/283791/1/76698259.eZnxkcm3.pst2051.JPG 73 Peter, DJ7WW If the worm wasn't engaged, the rotation would be u
/archives//html/Towertalk/2022-12/msg00155.html (10,044 bytes)

169. [TowerTalk] WG: AW: 3 guys vs 4 (score: 1)
Author: "dj7ww@t-online.de" <dj7ww@t-online.de>
Date: Wed, 11 Jan 2023 21:19:27 +0100 (CET)
I use 4 direction guying only. Main advantage for me I can erect my towers without helpers by using fallen derrick raising methode. Second advantage I can use 60% guy anchor radius without having to
/archives//html/Towertalk/2023-01/msg00041.html (8,520 bytes)

170. Re: [TowerTalk] LDF4-50 (score: 1)
Author: "dj7ww@t-online.de" <dj7ww@t-online.de>
Date: Sun, 19 Nov 2023 23:20:26 +0100 (CET)
Some manufacturer call it different. The inventor RFS calls it Cellflex LCF12-50J https://awbroadcast.com/produkt/rfs-cellflex-lcf12-50j-kabel/ 73 Peter, DJ7WW Is LDF4-50 still available? Or has it b
/archives//html/Towertalk/2023-11/msg00037.html (7,756 bytes)

171. Re: [TowerTalk] Copper wire thieves destroy 500 ft tower (score: 1)
Author: "dj7ww@t-online.de" <dj7ww@t-online.de>
Date: Sun, 21 Jan 2024 07:15:50 +0100 (CET)
The inventor calls it Heliflex nowadays, was Flexwell before. https://www.rfsworld.com/searchengine/3-1 73 Peter, DJ7WW Its both. https://scmsinc.com/product/andrew-hj8-50b-3-air-cable/ Jim W7RY On 1
/archives//html/Towertalk/2024-01/msg00056.html (10,690 bytes)

172. Re: [TowerTalk] RF Industries Connectors/Adapters (score: 1)
Author: "dj7ww@t-online.de" <dj7ww@t-online.de>
Date: Sat, 8 Jun 2024 13:18:35 +0200 (MEST)
Hi Jim, Max Gain Systems typically sell good quality stuff. I donīt know about the adapters in particular but everything I or friends bought there were excellent. https://mgs4u.com/product/type-n-fem
/archives//html/Towertalk/2024-06/msg00002.html (8,478 bytes)


This search system is powered by Namazu