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References: [ +from:ed_richardson@shaw.ca: 28 ]

Total 28 documents matching your query.

21. [TowerTalk] VSWR Changes with Power (score: 1)
Author: <ed_richardson@shaw.ca>
Date: Sun, 20 Oct 2019 11:06:41 -0500
Finally got around to making the long awaited antenna repairs. However I now find myself with a strange problem. On 15m, I have swept the antennas using 2 different handheld devices and measured the
/archives//html/Towertalk/2019-10/msg00151.html (8,268 bytes)

22. Re: [TowerTalk] VSWR Changes with Power (score: 1)
Author: <ed_richardson@shaw.ca>
Date: Sun, 20 Oct 2019 14:49:26 -0500
I will start sniffing around for a parasitic or harmonic. The amp is a solid state 1 kw model that according to the manufacturer is unconditionally stable. I will see what shows up spectrally. Ed VE4
/archives//html/Towertalk/2019-10/msg00157.html (9,898 bytes)

23. Re: [TowerTalk] VSWR Changes with Power (score: 1)
Author: <ed_richardson@shaw.ca>
Date: Sun, 20 Oct 2019 17:33:52 -0500
Thanks Jim and everyone else. I discovered a pair of parasitic carriers on 15m only. The were down about 25 dB from the fundamental. They were +/- about 700 kHz from the fundamental but drifted I pla
/archives//html/Towertalk/2019-10/msg00160.html (8,795 bytes)

24. Re: [TowerTalk] VSWR Changes with Power (score: 1)
Author: <ed_richardson@shaw.ca>
Date: Mon, 21 Oct 2019 17:37:57 -0500
I did some more testing today and found out the there are indeed out of band oscillations that are occurring. They did not occur everywhere in the band, only when the antenna load was slightly induct
/archives//html/Towertalk/2019-10/msg00180.html (10,898 bytes)

25. [TowerTalk] Come-Along Recommendations (score: 1)
Author: <ed_richardson@shaw.ca>
Date: Mon, 7 Sep 2020 12:40:12 -0500
Well since it is almost cold enough to start thinking of doing some antenna/tower work, I was hoping to canvass the group for recommendations or suggestions on come-along products that have been prov
/archives//html/Towertalk/2020-09/msg00067.html (7,042 bytes)

26. [TowerTalk] Mast Lifting (score: 1)
Author: <ed_richardson@shaw.ca>
Date: Sun, 23 May 2021 16:28:55 -0500
Needing to service the rotator and want to lift the loaded mast up and out of the rotator bracket. I have used a cheap com-along in the past but I am now reading that come-alongs are not suitable for
/archives//html/Towertalk/2021-05/msg00120.html (7,365 bytes)

27. [TowerTalk] Quick removal of 450 tower (score: 1)
Author: <ed_richardson@shaw.ca>
Date: Fri, 24 Dec 2021 12:17:55 -0600
Here is a controlled destruction of a 450 ft communications tower some may find interesting. No gin poles required! https://winnipeg.ctvnews.ca/video?clipId=2348072 This tower had to be removed to ma
/archives//html/Towertalk/2021-12/msg00120.html (7,267 bytes)

28. [TowerTalk] Triplexor/Switch/BPF SO2R (score: 1)
Author: <ed_richardson@shaw.ca>
Date: Tue, 15 Feb 2022 13:56:29 -0600
Regrettably I am resigned to never having stacked monobanders on this suburban lot. I have now started investigating the idea of using a triplexor and associated bandpass filters as a way of getting
/archives//html/Towertalk/2022-02/msg00045.html (7,984 bytes)

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