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References: [ +from:RCARIELLO@si.rr.com: 54 ]

Total 54 documents matching your query.

1. [TowerTalk] Relay Contact rating for RF useage? (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Wed Aug 6 19:55:26 2003
Hello to all, How is the rating of a relay converted to RF usage? A company normally gives the voltage and current rating for the relay contacts: 250 v ac @ 2 amps (assumed at 60 CPS) 30 v dc @ 3 amp
/archives//html/Towertalk/2003-08/msg00209.html (6,991 bytes)

2. [TowerTalk] Relays in RF usage (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Mon Aug 11 13:33:42 2003
Hello to all, Thanks to all that replied to my request. Based on the information I have received : VOLTAGE = SQUARE ROOT (POWER x RESISTANCE) CURRENT= SQUARE ROOT (POWER / RESISTANCE) With a 50 OHM L
/archives//html/Towertalk/2003-08/msg00377.html (8,597 bytes)

3. [TowerTalk] Relays in RF usage UPDATE (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Wed Aug 13 19:24:07 2003
I just received my copy of Worldradio September 2003. There is an article by Kurt N. Sterba on page 34, Aerials SWR and Voltage. Second paragraph "voltage goes up as the square root of the VSWR. So,
/archives//html/Towertalk/2003-08/msg00481.html (7,667 bytes)

4. [TowerTalk] Balanced Line using Coax ? (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Mon Jul 28 21:04:30 2003
Hello to all, In the ARRL antenna handbook they show where you can use two coax lines as a balanced line. Only the center conductors of the Coax are used. The article covers the new impedance of the
/archives//html/Towertalk/2003-07/msg00456.html (8,465 bytes)

5. [TowerTalk] BALANCED LINE USING COAX RESULTS (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Tue Jul 29 18:35:58 2003
Balanced Line using Coax Results I have summarized the many replies received to my question. A very grateful thank you to everyone that replied. Rich AA2MF W4DG I noticed a LARGE difference in the no
/archives//html/Towertalk/2003-07/msg00499.html (13,181 bytes)

6. [TowerTalk] US Towers and wind Loading Capacity (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Thu Jun 19 18:30:30 2003
Michael, I asked the same question some time ago. The answer I received was. Subtract one square foot for each foot above the top of the tower. So in the case of 10 Square feet at 50 Mph. 10 feet abo
/archives//html/Towertalk/2003-06/msg00285.html (10,056 bytes)

7. [TowerTalk] Gap Titan question (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Tue May 6 11:13:01 2003
Paul, I don't think you will see much of a difference between the antennas you mentioned. You may want to consider using a second antenna for receive only. In the ARRL Antenna Handbooks you will find
/archives//html/Towertalk/2003-05/msg00038.html (8,803 bytes)

8. [TowerTalk] Maximum Permissible Exposure (MPE) (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Thu May 15 20:06:23 2003
Randy, Try this web site. http://n5xu.ae.utexas.edu/rfsafety/ Rich AA2MF Weather Stations", and lot's more. Call Toll Free, 1-800-333-9041 with any questions and ask for Sherman, W2FLA.
/archives//html/Towertalk/2003-05/msg00157.html (9,015 bytes)

9. [TowerTalk] mechanical construction of 80m vertical (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Sat Mar 22 09:05:43 2003
Hello to All, The question of a full size 1/4 wave vertical element has been bouncing around for some time now. Many years ago I recall seeing at a Radio Contest Club Meeting photos of a Four Square
/archives//html/Towertalk/2003-03/msg00286.html (17,345 bytes)

10. [TowerTalk] Mast Length to Wind Load Questions (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Fri Feb 7 14:48:25 2003
Mast Length to Wind Loading Questions. Hello to all, Is there a rule of thumb to follow? Tower rated: 15 Square feet 1 foot above tower top. Moving the antenna to 15 feet above tower top. How large i
/archives//html/Towertalk/2003-02/msg00134.html (6,975 bytes)

11. [TowerTalk] SUMMERY Mast Lenght to Wind Load Question (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Sat Feb 8 07:25:50 2003
Hello to all, A very hardy thanks to all that replied to my question. I have summarized some of the messages and included below. I hope this information will be as useful to others as is has been to
/archives//html/Towertalk/2003-02/msg00146.html (8,467 bytes)

12. [TowerTalk] Mast Length to Wind Load Questions (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Sat Feb 8 15:05:06 2003
Tom, I am not shore if I understand your comments. If a tower has been rated for a load at its top and this is known. Then to move the load, why would the description of the tower be needed? In case
/archives//html/Towertalk/2003-02/msg00150.html (11,648 bytes)

13. [TowerTalk] Force12 information needed (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Wed Feb 12 20:04:46 2003
Hello to all, I am working with the EZNEC program to find the radiation patterns of some tri-band beam antennas. This work is for my Florida QTH antenna stack. I am looking for someone willing to pho
/archives//html/Towertalk/2003-02/msg00303.html (6,738 bytes)

14. [Towertalk] Aluminum tubing (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Wed, 8 Jan 2003 04:21:45 -0000
Hello to all, As a side note to the aluminum tubing request. Are there any plans available for a free standing vertical element around 70 feet or so. With out guys and strong enough to handle a 120 m
/archives//html/Towertalk/2003-01/msg00162.html (10,416 bytes)

15. [Towertalk] Quad's Do any stay up? (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Sat, 14 Dec 2002 16:24:59 -0000
Hello to all, To continue my information gathering for the new station in Florida. Nothing lasts forever. Are there any Quad mechanical design's that have proven themselves with the test of time. Wha
/archives//html/Towertalk/2002-12/msg00420.html (8,035 bytes)

16. [Towertalk] stripping enameled wire (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Tue, 17 Dec 2002 15:52:19 -0000
Tony, I have burnt the enamel coating off my placing the end of the wire in the flame of a match. Once the enamel starts to burn remove the wire from the match flame. As soon as the length along the
/archives//html/Towertalk/2002-12/msg00491.html (8,532 bytes)

17. [Towertalk] Interaction of Verticals (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Tue, 6 Aug 2002 19:06:34 -0000
Dink, Why bother putting up two antennas? Put up the full size 1/4 wave vertical for 80 meters. Then use it as a base feed 1/2 wave vertical for 40 meters. Rich AA2MF http://www.mscomputer.com additi
/archives//html/Towertalk/2002-08/msg00146.html (9,425 bytes)

18. [Towertalk] Matching unit for 1/2 wave verticals (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Thu, 8 Aug 2002 02:22:39 -0000
Hello to all and Hello to Dink, How this all started: A few days ago Dink, N7WA requested information on the possible interaction of closely spaced full size 1/4 wave verticals for 80 and 40 meters.
/archives//html/Towertalk/2002-08/msg00220.html (8,067 bytes)

19. [Towertalk] Magnetic Loop Efficiency (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Wed, 21 Aug 2002 14:16:51 -0000
Hello to all, Sometime back there was the discussion on the reflector of starting another group for "Hams With Small Lots". During this discussion I met a fellow Ham that had information on the true
/archives//html/Towertalk/2002-08/msg00599.html (6,822 bytes)

20. [Towertalk] OT: Vertical wire TOP FEED? (score: 1)
Author: RCARIELLO@si.rr.com (RCARIELLO)
Date: Thu, 20 Jun 2002 22:23:01 -0000
George, The antenna should work very well in the direction away from your building. window ledge running at an angle to the ground away from your building. Remember the far end of the wire will be ho
/archives//html/Towertalk/2002-06/msg00323.html (9,282 bytes)


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