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Total 25 documents matching your query.

1. Re: [TowerTalk] SWR is what SWR meter measures (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Fri, 13 May 2005 07:09:58 +0100
Regardless of the type of transmitter, the concept of "reflected power" and [it] "winds up 'inside' the TX" is a highly unprofitable way to look at this problem. A much easier way to think of it is:
/archives//html/Towertalk/2005-05/msg00317.html (12,675 bytes)

2. Re: [TowerTalk] Serious RF Problem (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Fri, 13 May 2005 07:17:50 +0100
Build or buy a clip-on RF current meter. Clip it over *every* cable coming into the shack, and get yourself some real numbers. It's really the only way to know where the problems are coming from, and
/archives//html/Towertalk/2005-05/msg00318.html (8,159 bytes)

3. Re: [TowerTalk] SWR is what SWR meter measures (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Fri, 13 May 2005 14:27:33 +0100
Hi Tom! Nice to be back to this list. We're still commuting between two homes, in G and GM, and work levels and Internet access are causing some "QSB" on the newsgroups and mailing lists... I agree w
/archives//html/Towertalk/2005-05/msg00325.html (14,951 bytes)

4. Re: [TowerTalk] SWR is what SWR meter measures (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Fri, 13 May 2005 17:02:00 +0100
Converted into hot air... where else could it *possibly* go? :-) -- 73 from Ian GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek _______________________________________
/archives//html/Towertalk/2005-05/msg00333.html (9,061 bytes)

5. Re: [TowerTalk] Antenna interaction tests (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Sun, 15 May 2005 08:45:48 +0100
The whole point of the SteppIR is that you can REtune the element lengths to compensate for any detuning, and then store the new values as your default settings. In other words, the best tools for th
/archives//html/Towertalk/2005-05/msg00391.html (8,076 bytes)

6. Re: [TowerTalk] Mini Lini on the Tower? (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Mon, 16 May 2005 19:54:50 +0100
One application where it would work - and even save money - is on "airline DXpeditions" where weight can be the deciding factor between going QRO or QRP. Although it looks like a classic pre-Dayton a
/archives//html/Towertalk/2005-05/msg00442.html (8,670 bytes)

7. Re: [TowerTalk] Mini Lini on the Tower? (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Tue, 17 May 2005 17:41:14 +0100
It also bothers me that the single-band amplifier plugins are grounded to the case by nothing more than one banana plug (or two if you include the +Vdd rail). This is not a good start for EMC testing
/archives//html/Towertalk/2005-05/msg00487.html (10,405 bytes)

8. Re: [TowerTalk] Stainless U-bolts for Cushcraft antennas (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Wed, 18 May 2005 19:59:46 +0100
Didn't K7NV talk about this a few years ago? It must have been here... As I recall, he recommended using thread-locking compound rather than a pure anti-seize, because: (a) it lubricates the sliding
/archives//html/Towertalk/2005-05/msg00526.html (10,897 bytes)

9. Re: [TowerTalk] mast anti slip coating (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Sat, 21 May 2005 06:56:48 +0100
You guys put sand on your ceilings? Another one that works is a thin sheet of butyl rubber between the mast and the clamp, to increase the friction grab (again, recommended by someone here a long tim
/archives//html/Towertalk/2005-05/msg00572.html (7,648 bytes)

10. Re: [TowerTalk] Copper pipe for ground rods?...YES (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Sat, 11 Jun 2005 21:33:29 +0100
Like JC, I've had good success with a 0.5in square socket drive adapter for the SDS hammer drill, and the right size of socket to slip over the end of the ground rod. You can buy special ground rod d
/archives//html/Towertalk/2005-06/msg00277.html (9,082 bytes)

11. Re: [TowerTalk] 40 M beam suggestions (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Thu, 16 Jun 2005 07:08:08 +0100
Les Moxon (G6XN, SK) would have been delighted with that application of his ideas. He always liked to think of 2-element beams being instantly reversible. If the two elements are made identical, the
/archives//html/Towertalk/2005-06/msg00401.html (8,637 bytes)

12. Re: [TowerTalk] Liberal Arts Major and Antenna Theory (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Mon, 20 Jun 2005 23:25:44 +0100
For this application you can forget the math. Simply read it as a shorthand way of writing: "41.3 ohms resistive, in series with 0.9 ohms of capacitive reactance". If it had been 41.3 +j0.9, you woul
/archives//html/Towertalk/2005-06/msg00476.html (8,238 bytes)

13. Re: [TowerTalk] Hang wires.... (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Wed, 22 Jun 2005 08:33:25 +0100
Slightly changing the subject, is there a good way to slice off thin overhanging branches at the 20-30ft level? Things that won't work in this particular location: * No way to get a cherry-picker out
/archives//html/Towertalk/2005-06/msg00524.html (7,752 bytes)

14. Re: [TowerTalk] Hang wires.... (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Thu, 23 Jun 2005 22:13:48 +0100
Yesterday, I asked: Many, many thanks to everyone for all the good suggestions. Since the new QTH has lots of overhanging stuff, ranging from thin green twigs to quite thick woody branches, I'll prob
/archives//html/Towertalk/2005-06/msg00560.html (7,939 bytes)

15. Re: [TowerTalk] Guy Anchor Advise (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Fri, 24 Jun 2005 08:59:46 +0100
I'm facing a similar problem at the new QTH, except that it's for the base of a free-standing tower. A 4ft cube of concrete is required, with four 1in studs set in - but as soon as we start to dig, w
/archives//html/Towertalk/2005-06/msg00565.html (10,696 bytes)

16. Re: [TowerTalk] Hanging Wires/Cutting branches (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Tue, 28 Jun 2005 07:43:55 +0100
As the person who originally asked the question: thank you, Roy. From everybody's recommendations, I also found a few more web pages on pole saws and pole pruners: Jameson Corp. (US manufacturers): h
/archives//html/Towertalk/2005-06/msg00618.html (9,503 bytes)

17. Re: [TowerTalk] ...Compressed Air Driven Tower (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Thu, 30 Jun 2005 07:51:27 +0100
I had two of these things for some years. They work pretty much as Jim says... but there are some major disadvantages for long-term use at a home station. The main problem is that they rely on a very
/archives//html/Towertalk/2005-06/msg00709.html (10,038 bytes)

18. Re: [TowerTalk] ...Compressed Air Driven Tower (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Fri, 1 Jul 2005 07:21:00 +0100
Maybe I was being too discouraging, but take my experience as a warning: don't let them run wet inside! If you're thinking of extended home station use, either set yourself up with a permanent gas su
/archives//html/Towertalk/2005-07/msg00001.html (9,237 bytes)

19. Re: [TowerTalk] CLAMP ON RF AMP METER (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Sun, 10 Jul 2005 21:31:22 +0100
http://www.ifwtech.co.uk/g3sek/clip-on/clip-on.htm -- 73 from Ian G/GM3SEK 'In Practice' columnist for RadCom (RSGB) http://www.ifwtech.co.uk/g3sek _______________________________________________ See
/archives//html/Towertalk/2005-07/msg00247.html (7,769 bytes)

20. Re: [TowerTalk] [BULK] - soldering 259s to buryflex 9914F (score: 1)
Author: Ian White GM3SEK <g3sek@ifwtech.co.uk>
Date: Wed, 13 Jul 2005 08:05:57 +0100
Two additional H&Ks: 1. Unless the plug is silver plated, it often helps to clear the plating out of the solder holes, so you're soldering to bare brass. 2. If you pre-heat the plug body with a hot-a
/archives//html/Towertalk/2005-07/msg00306.html (9,331 bytes)


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