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Total 131 documents matching your query.

101. [TowerTalk] Beverage termination video (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Thu, 28 May 2020 08:08:16 -0600
How important is it to get that Beverage termination resistor just right? Using 4nec2 I do some modelling to show that the RDF and far field pattern of a Beverage is not greatly effected by the termi
/archives//html/Towertalk/2020-05/msg00197.html (7,693 bytes)

102. Re: [TowerTalk] Beverage Termination video (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Thu, 28 May 2020 18:27:56 -0600
Jim, Great explanation! steve ve6wz _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contes
/archives//html/Towertalk/2020-05/msg00206.html (9,444 bytes)

103. [TowerTalk] Beverage antenna field switching (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Wed, 3 Jun 2020 17:34:13 -0600
I have received a number of email questions asking how I switch my Beverage wires in the field. Here is a video that shows the design of my cascaded 2 relay high isolation 4 relay switch box, as well
/archives//html/Towertalk/2020-06/msg00014.html (7,183 bytes)

104. [TowerTalk] Tuning a 2el Yagi (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Sun, 21 Jun 2020 08:03:15 -0600
This morning I uploaded a YouTube video explaining the method for tuning any 2el parasitic array. I do some experiments in my workshop using the Nano-VNA on a small 2 el Yagi to explain mutual coupli
/archives//html/Towertalk/2020-06/msg00158.html (7,174 bytes)

105. Re: [TowerTalk] Pan,zoom,tilt camera on tower (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Fri, 4 Sep 2020 08:55:29 -0600
Mike.. I didn't bother with the pan-tilt-zoom function on my cameras, but it can be handy. The tower mounted camera is on the mast, so I just rotate the beams for 360 deg view. BTW.I shunt feed the t
/archives//html/Towertalk/2020-09/msg00039.html (8,798 bytes)

106. [TowerTalk] Broadside vs end-fire phasing of RX antennas (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Tue, 1 Dec 2020 10:12:51 -0700
Here is a YouTube video I uploaded a few days ago that explains the difference between end-fire and broadside phasing. I show how this principle is applied to Beverage pairs in either end-fire en-ech
/archives//html/Towertalk/2020-12/msg00000.html (6,783 bytes)

107. Re: [TowerTalk] Topband: Broadside vs end-fire phasing of RX ants: MFJ-1026? (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Tue, 1 Dec 2020 13:31:43 -0700
Hi Rich, I used the MFJ 1026 (I had 2 of them) and also used the NCC-1. I used them to phase various antennas including my en-echelon Beverage pair which were fed with CAT5 instead of RG-6. They work
/archives//html/Towertalk/2020-12/msg00001.html (7,889 bytes)

108. [TowerTalk] The Magic-T (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Tue, 9 Feb 2021 15:32:58 -0700
Today I uploaded a video to my RX series which explains the Magic-T combiner. I have received a few emails asking me how do I make the magic-T? so I thought a video would be helpful. I show the metho
/archives//html/Towertalk/2021-02/msg00022.html (7,329 bytes)

109. Re: [TowerTalk] Downhill Beverage (score: 1)
Author: VE6WZ Steve <ve6wz@shaw.ca>
Date: Wed, 17 Mar 2021 16:11:52 -0600 (MDT)
Gary, All but 2 of my 15 Beverages run downhill from my remote station which is also on the crest of a hill. They are not BOGs, but 800-1000 wires about 8-10 above ground. They perform exceptionally
/archives//html/Towertalk/2021-03/msg00232.html (8,224 bytes)

110. Re: [TowerTalk] OptiBeam OB2-40M (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Sat, 22 May 2021 09:11:50 -0600
Wes, You are correct. The original numbers for the CC coils from Brian's program were far too pessimistic, especially regarding his form loss algorithm. Brians new coil program is more realistic. In
/archives//html/Towertalk/2021-05/msg00092.html (13,734 bytes)

111. Re: [TowerTalk] OptiBeam OB2-40M (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Sat, 22 May 2021 15:36:27 -0600
Dave et al, This has drifted off topic, but I dug out my 4NEC2 Cushcraft XM-240 models and coil calculations. (please be aware I have not checked the details of this modelling since I did it some tim
/archives//html/Towertalk/2021-05/msg00098.html (11,981 bytes)

112. Re: [TowerTalk] OptiBeam OB2-40M (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Sat, 22 May 2021 19:30:49 -0600
Dave Indeed few will be motivated to implement a complex in-band switching system, but if you are a home brew antenna builder, its not that difficult, but it is NOT plug-and play. I like to build ant
/archives//html/Towertalk/2021-05/msg00106.html (18,663 bytes)

113. Re: [TowerTalk] OptiBeam OB2-40M (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Sun, 23 May 2021 08:29:02 -0600
I have received a few direct email questions about this thread.. Just to be clear, the reason for inductor switching at the Yagi elements is NOT only to get a good, low SWR" match at the driver. The
/archives//html/Towertalk/2021-05/msg00109.html (20,827 bytes)

114. Re: [TowerTalk] OptiBeam OB2-40M (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Sun, 23 May 2021 14:41:46 -0600
Mike, I plan to make YouTube video about this, but did you read the modelling section of my 80-40m Yagi paper? Perhaps that is exactly the message in the bottle if you are looking for? https://drive.
/archives//html/Towertalk/2021-05/msg00118.html (14,914 bytes)

115. [TowerTalk] XM-240 performance video (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Thu, 27 May 2021 12:15:55 -0600
How does the XM-240 Yagi really perform across the full 40m band? Today I uploaded a YouTube video where I use 4nec2 to model the XM-240 Yagi and show the gain, F/B and SWR performance across the 40m
/archives//html/Towertalk/2021-05/msg00162.html (7,230 bytes)

116. Re: [TowerTalk] Minimum Beverage Distance from Tower? (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Thu, 29 Jul 2021 15:56:25 -0600
Hi Dick, I have 15 Beverage wires, 5 of which traverse within 50 feet of the main XMIT shunt fed tower, and 3 of the wires are only 30 feet from one of the parasitic 160m elements. (my JA, West, Nort
/archives//html/Towertalk/2021-07/msg00165.html (10,266 bytes)

117. Re: [TowerTalk] YCCC 9 Circle Receive Array (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Thu, 23 Sep 2021 13:34:21 -0600
Roger, Each HI-Z amp (impedance buffer) at each element already has a 1:1 braid breaker choke at the input so is already isolated from the feedline. The chokes at the combiner prevent all the feedlin
/archives//html/Towertalk/2021-09/msg00197.html (9,998 bytes)

118. Re: [TowerTalk] Reflector in the back of shunt tower for 160m (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Thu, 27 Jan 2022 08:43:00 -0700
Yes. I wrote this paper about it. I talk about about modelling, design, construction and about tuning the array: https://drive.google.com/file/d/1eVklkZtlJW93JIJ9oDqbCyl-Jkik6YEX/view <https://drive.
/archives//html/Towertalk/2022-01/msg00155.html (8,192 bytes)

119. Re: [TowerTalk] Reflector in the back of shunt tower for 160m (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Thu, 27 Jan 2022 10:19:32 -0700
Ignacy, I did notice that you were planning for elevated radials. Be aware that the gain and F/B of the array is very sensitive to parasitic loss. Ground loss will quickly diminish the current in the
/archives//html/Towertalk/2022-01/msg00157.html (11,018 bytes)

120. [TowerTalk] New 9 circle PCB with CMCs (score: 1)
Author: VE6WZ_Steve <ve6wz@shaw.ca>
Date: Tue, 1 Feb 2022 09:19:18 -0700
Today I uploaded a YouTube video describing my new 9 circle combiner board PCB design that has small Murata SMD CMCs on each RG-6 feedline. I include PCB file links to download in both KiCad format o
/archives//html/Towertalk/2022-02/msg00001.html (7,942 bytes)


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