Search String: Display: Description: Sort:

Results:

References: [ +from:jim.thom@telus.net: 1184 ]

Total 1184 documents matching your query.

1. [TowerTalk] Motor Driven vac used in 40M DE? (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Tue, 29 Dec 2009 00:06:26 -0800
Has anyone tried this b4 ? I have a F-12 340N, used, of recent vintage. I have done a few mods to it already, including replacing the 4" x 12" long flat plates with upside down 4" channel AL [.281" t
/archives//html/Towertalk/2009-12/msg00310.html (9,515 bytes)

2. Re: [TowerTalk] Motor Driven vac used in 40M DE? (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Wed, 30 Dec 2009 00:50:42 -0800
was tuned for 7070............ the yagi was good for 7000-7280 khz . It appears that the swr rises slowly on the high side of resonance. possibly the gain is not any where near 280 khz. If I recall.
/archives//html/Towertalk/2009-12/msg00316.html (10,931 bytes)

3. Re: [TowerTalk] Motor Driven vac used in 40M DE? (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Wed, 30 Dec 2009 04:20:30 -0800
-- From: "Gene Fuller" <w2lu@rochester.rr.com> Sent: Tuesday, December 29, 2009 8:42 AM To: "Jim Walker" <jim@walkersdomain.com>; "'Jim Thomson'" <Jim.thom@telus.net> Cc: <towertalk@contesting.com> S
/archives//html/Towertalk/2009-12/msg00318.html (10,700 bytes)

4. [TowerTalk] Measuring beam forward gain. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Thu, 31 Dec 2009 05:02:06 -0800
I only use these measurements to measure relative gain between two different antenna configurations. Measuring absolute gain is a whole nuther ball of wax. For my measurements, I put the sig gen 1000
/archives//html/Towertalk/2009-12/msg00326.html (8,799 bytes)

5. [TowerTalk] 40 M DE adjustment.. via vac cap. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Thu, 31 Dec 2009 05:54:19 -0800
Jim... Unless I'm missing something, it shouldn't require an expensive vac cap to tune the DE match of a parasitic beam. RF peak voltage across the gamma cap shouldn't normally exceed perhaps a few h
/archives//html/Towertalk/2009-12/msg00327.html (11,092 bytes)

6. [TowerTalk] 6 pack, int relay's (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Fri, 1 Jan 2010 05:06:18 -0800
I had several of them for years and I was always needing to yank the feedlines around on them till the rcvr would come back to life or the sudden high swr would go back to normal. For a while I foun
/archives//html/Towertalk/2010-01/msg00000.html (9,355 bytes)

7. [TowerTalk] Half sloper recommedations needed (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Fri, 1 Jan 2010 05:18:33 -0800
-- . Suggestion 1: Why not shunt feed your 90' tower? I'd bet it would knock the socks off any sloper or Inverted-L hung from that same tower, and it isn't any more difficult to build. 73, Dave AB7E
/archives//html/Towertalk/2010-01/msg00001.html (7,646 bytes)

8. [TowerTalk] 6 pack relays. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Fri, 1 Jan 2010 06:02:18 -0800
Does anyone have the part number of the relays used in the 6-pack? We have intermittent problems at KP2 with a 6-pack. Usually cleaning the relays once in a while alleviates any problems during the c
/archives//html/Towertalk/2010-01/msg00003.html (7,481 bytes)

9. [TowerTalk] Mounting a 1032 Tic Ring to a HDX-689 (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Thu, 7 Jan 2010 02:08:03 -0800
gents Has anybody managed to mount a 1032 tic ring to a HDX-689 tower ? I know it can be done... seen the new mounting scheme. Here's the part I don't get. My remote switch box will be on the mast. T
/archives//html/Towertalk/2010-01/msg00139.html (8,515 bytes)

10. [TowerTalk] 340N + mag 520...how close can you get them ?? / Al mast (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Fri, 8 Jan 2010 01:22:26 -0800
gents F-12 claims you can install another HF yagi, or tribander, etc, including 15m.....within 1 meter [ 39.37"] of the F-12 340N. Is this true? Seems like very short spacing to me. I'd like to insta
/archives//html/Towertalk/2010-01/msg00154.html (8,999 bytes)

11. Re: [TowerTalk] 340N + mag 520...how close can you get them ?? / Al mast (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Fri, 8 Jan 2010 05:49:49 -0800
-- From: "Ed Muns" <w0yk@msn.com> Sent: Friday, January 08, 2010 2:55 AM To: "Jim Thomson" <Jim.thom@telus.net>; <towertalk-bounces@contesting.com>; <towertalk@contesting.com> Subject: Re: [TowerTalk
/archives//html/Towertalk/2010-01/msg00157.html (15,380 bytes)

12. [TowerTalk] Yagi prices.. have they all gone crazy ? (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Thu, 14 Jan 2010 05:25:06 -0800
Ok I perused the F-12 site for the 1st time in a looong time. I'm not impressed with the new site. Loads of errors, mistakes, omissions etc. What's the story on the prices ??? Almost $6K for a F-12 6
/archives//html/Towertalk/2010-01/msg00278.html (7,756 bytes)

13. [TowerTalk] F-12 EF-180B....does it resonate on other bands ?? (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Wed, 27 Jan 2010 05:48:52 -0800
gents Does anybody know if the F-12 EF-180B 80m rotary dipole resonates on any other ham band.. besides 80m ?? The EF-180B is no longer made by F-12 It's a LL 68' long dipole. It will be mounted at t
/archives//html/Towertalk/2010-01/msg00811.html (8,230 bytes)

14. [TowerTalk] Antenna spacing question (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Wed, 27 Jan 2010 06:25:49 -0800
Message: 2 Date: Wed, 27 Jan 2010 05:51:06 -0500 From: Pete Smith <n4zr@contesting.com> Subject: Re: [TowerTalk] Antenna spacing question To: "Tower and HF antenna construction topics." <towertalk@co
/archives//html/Towertalk/2010-01/msg00812.html (10,668 bytes)

15. [TowerTalk] sched 80 mast (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Wed, 27 Jan 2010 07:09:24 -0800
VE9HF indicates his sched 80 mast is .25" thick. It's not. IF his mast is typ 1.9" OD sched 80 stuff... it's only .200" thick. His section modulus is only .412 If the yield strength is 35 ksi.... his
/archives//html/Towertalk/2010-01/msg00816.html (8,866 bytes)

16. [TowerTalk] RG-Numbers don't tell us much (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Fri, 5 Feb 2010 04:47:46 -0800
Yes, but at MF and HF, it's a VERY good starting point when COMPARING cables. will drop to just 1/4 of what is was originally. only 1/2 of what is was originally. [same deal when using tubing for tan
/archives//html/Towertalk/2010-02/msg00145.html (9,292 bytes)

17. [TowerTalk] Cable loss revisted. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Fri, 5 Feb 2010 05:34:31 -0800
I visited some contest stations, and after having a look at things, cringe at the thought of the loss on the coax cables used. Some had really long runs of coax from station to base of tower.. then m
/archives//html/Towertalk/2010-02/msg00146.html (9,801 bytes)

18. [TowerTalk] XM-240 hat problem (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Tue, 9 Feb 2010 00:22:55 -0800
Hi Guys, I've had problems with the X-Hat Rods falling off of my XM-240. Therefore, I would like to eliminate the X-Hat by lengthening the elements. I'm wondering if anyone has done this successfully
/archives//html/Towertalk/2010-02/msg00185.html (7,725 bytes)

19. [TowerTalk] UHF connectors for LMR-600, I have loads of em..new. (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Tue, 9 Feb 2010 19:02:38 -0800
I think roger wanted UHF connectors for LMR-600 ? I bought a load of em a few yrs ago... and never used em. I use 7-16 Dins these days... so the MALE UHF connectors for the LMR-600 are now surplus to
/archives//html/Towertalk/2010-02/msg00210.html (8,178 bytes)

20. [TowerTalk] tower installation HG52SS / options (score: 1)
Author: "Jim Thomson" <Jim.thom@telus.net>
Date: Sat, 13 Feb 2010 19:40:52 -0800
gents When installing free standing towers on ROCK, you have a few options. My buddy has a huge trylon, that is located on solid rock. Instead of messing about with jack hammers, he used TRYLON'S sug
/archives//html/Towertalk/2010-02/msg00371.html (8,761 bytes)


This search system is powered by Namazu