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References: [ +from:chrisb@prism.co.za: 13 ]

Total 13 documents matching your query.

1. [TowerTalk] 50 MHz beam height (score: 1)
Author: ChrisB@prism.co.za (Chris Burger)
Date: Thu, 3 Jan 2002 10:06:21 +0200
My neighbour, Hal Lund ZS6WB, has a beam on my high tower (41 m or 135' a.g.l.), and another on a separate tower (18 m or 60'). The high beam is a 7 el with a medium boom and the low beam is a 9 el m
/archives//html/Towertalk/2002-01/msg00117.html (9,306 bytes)

2. [TowerTalk] Strength of rotating towers (score: 1)
Author: ChrisB@prism.co.za (Chris Burger)
Date: Tue, 30 Oct 2001 07:13:55 +0200
My rotating tower is now up and running, awaiting only a suitably heavy rotator. The bottom 17 m is stationary, with something like 29 m rotating above it. Right now, the top beam (20M4) is at 42 m.
/archives//html/Towertalk/2001-10/msg00560.html (9,200 bytes)

3. [TowerTalk] Coax caps (score: 1)
Author: ChrisB@prism.co.za (Chris Burger)
Date: Thu, 26 Jul 2001 09:22:30 +0200
N4ZR asked: No problem, within the voltage rating of the coax. Just don't cut the end off bluntly. Strip the braid back by perhaps 20 mm (or 3/4" if you insist), and sleeve it with heat shrink sleeve
/archives//html/Towertalk/2001-07/msg00489.html (7,181 bytes)

4. [TowerTalk] Taming an 80 m beam (score: 1)
Author: ChrisB@prism.co.za (Chris Burger)
Date: Thu, 26 Jul 2001 20:27:36 +0200
When I started contesting in the early Eighties, even 40 m beams were not that commonplace. The few big guns who used them were LOUD--PY5EG, I2VRN and a few others. As they proliferated, my awe-struc
/archives//html/Towertalk/2001-07/msg00513.html (12,468 bytes)

5. [TowerTalk] K7GCO's first-order estimate (score: 1)
Author: ChrisB@prism.co.za (Chris Burger)
Date: Thu, 7 Jun 2001 09:44:00 +0200
you added and length, upset The answer is simple, at least for beam pattern. As has been mentioned, the effect of stray guy radiation is mainly to the nulls in the pattern. Assuming a null of -20 dB
/archives//html/Towertalk/2001-06/msg00090.html (7,756 bytes)

6. [TowerTalk] Metal roof (score: 1)
Author: ChrisB@prism.co.za (Chris Burger)
Date: Mon, 11 Jun 2001 09:26:35 +0200
Some anecdotal evidence that could be useful. In 1988, I operated as 3DA0/ZS6BCR. I used a Butternut HF2V on 160, in the middle of a corrugated iron barn roof, perhaps 20 x 40 m in size and peaked. T
/archives//html/Towertalk/2001-06/msg00204.html (7,370 bytes)

7. [TowerTalk] Buried coax in the real world (score: 1)
Author: ChrisB@prism.co.za (Chris Burger)
Date: Wed, 2 May 2001 16:56:30 +0200
I've had buried coax runs at two locations. Both used unperforated PVC pipe, 100 mm (approx. 4") in diameter. First location: Sloping ground, around 25 m (80') to the tower, good drainage. Five RG213
/archives//html/Towertalk/2001-05/msg00051.html (9,203 bytes)

8. [TowerTalk] Hate reflectors (score: 1)
Author: ChrisB@prism.co.za (Chris Burger)
Date: Fri, 4 May 2001 09:45:37 +0200
Someone quipped: To which someone else replied: Careful: V31BB died not long after... ;^> Chris R. Burger ZS6EZ List Sponsor: ChampionRadio.com - Trylon self-supporting towers, safety equipment, rigg
/archives//html/Towertalk/2001-05/msg00108.html (6,938 bytes)

9. [TowerTalk] C3 on WARC bands (score: 1)
Author: ChrisB@prism.co.za (Chris Burger)
Date: Thu, 17 May 2001 11:00:12 +0200
I have no dedicated WARC antennas, except a pseudo-vertical on 10 MHz (used aluminium that was too soft!). Here are my findings; nothing measured or concrete, just that "it works". I force-feed the C
/archives//html/Towertalk/2001-05/msg00380.html (8,647 bytes)

10. [TowerTalk] Connectors (score: 1)
Author: chrisb@prism.co.za (Chris Burger)
Date: Mon, 2 Apr 2001 10:30:31 +0200
After many years of struggling with soldering into little holes on lousy connectors, I gradually started migrating to N connectors. They are less lossy, generally waterproof and mate more reliably th
/archives//html/Towertalk/2001-04/msg00022.html (8,635 bytes)

11. [TowerTalk] Towertalk topics (score: 1)
Author: chrisb@prism.co.za (Chris Burger)
Date: Thu, 12 Apr 2001 10:10:36 +0200
Just imagine: When I heard that Towertalk would teach me a lot about erections, I was thinking of steel! Certainly didn't anticipate learning everything there is to know about prostate cancer. By the
/archives//html/Towertalk/2001-04/msg00309.html (7,000 bytes)

12. [TowerTalk] ProSisTel/BigBoy (score: 1)
Author: chrisb@prism.co.za (Chris Burger)
Date: Tue, 27 Mar 2001 16:39:19 +0200
I'm looking at the ProSisTel/BigBoy rotators to turn a tower or two. Although I've heard about various concerns regarding shipping etc., I have heard no feedback on their technical merits (or otherwi
/archives//html/Towertalk/2001-03/msg00542.html (7,176 bytes)

13. [TowerTalk] Rotators--feedback (score: 1)
Author: chrisb@prism.co.za (Chris Burger)
Date: Wed, 28 Mar 2001 13:13:05 +0200
Thanks for the dozen responses to my questions about ProSisTel/Big Boy and prop pitch motors. The two first-hand accounts of ProSisTel/Big Boy rotators were posted on TowerTalk, and I needn't say any
/archives//html/Towertalk/2001-03/msg00587.html (10,299 bytes)


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