On 10/18/2017 6:07 PM, Jim Brown wrote: On 10/18/2017 4:21 PM, Wes Stewart wrote: The NEC says of bonding in Article 100: "The permanent joining of metal parts together to form an electrically conduc
No surprise. In a properly designed bolt/nut situation, the bolt is supposed to fail first :-) Hopefully they broke when the tower was vertical and the op failed to turn off the motor. Wes N7WS I h
I second Jim's remarks about the VNWA 3E (and Dan's, AC6LA, software). I use mine in the field with a 10" touch screen tablet computer (Motion) running, uck, Windows 10. Not quite as friendly as a
What a difference 35 miles make. As mentioned before I have BC stations at my QTH (https://www.qrz.com/db/N7WS) that are -3dBm. (~S9+70) Wes N7WS The MFJ isn't bothered by it. 73, Dick, W1KSZ ____
I have no knowledge of MFJ equipment. With a real vector analyzer, calibrated with OSL standards, I would expect that the effects of any filtering could be mitigated, although dynamic range and possi
I have tried to follow this thread with some interest. My experience with mechanical design has been limited to using Leeson's (W6QHS) spreadsheets. Also, I tend to use very modest antennas that I
This might be of interest. www.electricalpartmanuals.com/pdf/miscellaneous/Biddle%20Instruments/.../25TA.pdf On 11/3/2017 5:14 AM, Clay Autery wrote: Simple answer... you can't. There is an Appendix
Try this one: https://assets.tequipment.net/assets/3/7/GettingDownToEarth.pdf Could you check it? <smile> 73, Clay, KY5G www.electricalpartmanuals.com/pdf/miscellaneous/Biddle%20Instruments/.../25TA
AutoEZ It's still available on an old DOS computer. What current software has optimizing routines? I have older versions of YW and EZNEC. I don't see optimizing routines in either. 73, Ray _ ________
Yes. John KK9A _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contesting.com http://lists.contesting.com/mailman/list
Nabble would do it. If only there was some way to search for things like this, however I'm aware of no such technology. I suspect if such a technology was developed, it would become an overnight succ
Legal power for classic AM on 80 meters is 375 W of carrier power. If you run this then the PEP is 1500W and the antenna is within spec. I was using a vertical antenna rated for 1500 watts, but it f
So? If they spec the antenna in PEP that suggests it's peak limited. If it's average power limited, then they should say so. Apparently they did, after the fact. 73 Gary K4FMX --Original Message--
Actually that's not true. A lot of baluns are wound with balanced transmission line. Wes. N7WS Sent from my iPhone _______________________________________________ ____________________________________
[sigh] A common-mode choke IS a balun. Bert, VE3NR Wes. N7WS _______________________________________________ _______________________________________________ TowerTalk mailing list TowerTalk@contestin
He said it because he doesn't know what he's talking about. There are a lot of reasons why window line is not a good idea, but it's totally wrong to say that a common mode choke will choke the signal
Because we find it to be a perfectly fine term, widely understood and accepted in professional literature. I remember when most DC power supplies had chokes in them and transmission lines can be imp
The only one mistaken here ...let me rephrase... many here, including you are mistaken. N7WS Perry K4PWO [sigh] A common-mode choke IS a balun. On 12/11/2017 5:15 PM, Bert wrote: We're talking about
See the two part article, "Aerodynamic Balancing" by Dick Weber, K5IU in the Summer 1994 and Winter 1995 issues of Communications Quarterly. The only thing mounting on opposite sides of the mast wil
Jim has seemingly made the study of the construction, measurement and application of "common-mode chokes" his life's work. His heroic efforts are to be applauded. Nevertheless, he and I see some thi