[Elecraft] Elecraft] best grounding technique
I suppose one should initially define "best" . I take the approach that the NEC code is to be followed under any and all conditions. As to general station configuration I refer you to the work of Jim Brown, K9YC. He has done extensive work and produced publications on the topic. He advocates the LINKING approach also known as daisy chain connection to a common ground point. With each ground conductor having a few milliohms of resistance, we find total resistance is the sum of the individual resistances. R total = R1 + R2 + R3 + ... I prefer to use the FAN approach or STAR ground system. The station power supply ground is the common point for each piece of station equipment to be connected with a dedicated ground conductor. With each ground conductor connected to a common point we then find the total resistance is resistors in parallel. R total = R1*R2/R1 + R2 or R total = 1/ [(1/r1) +(1/r2) + (1/r3)]. In this case the total R is less than that of the lowest value resistance present. Just be sure all feed lines and rotor lines have lightning protection devices on each one and they are outside of the house. Any driven ground MUST be bonded to the AC Mains ground for the service. This is a requirement of the NEC. 73 Bob, K4TAX Message: 15 Date: Fri, 19 Mar 2021 21:06:47 + From: Robert G Strickland To: Elecraft Reflector Subject: [Elecraft] best grounding technique Message-ID: <60551267.4000...@verizon.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed It seems that there are two ways of running grounding wires in the shack: FAN - from a common ground point, individual grounding wires are run to each piece of equipment; LINKING - a ground wire is run from each piece of equipment to the next and eventually ending in a common ground point. What's the group wisdom on the relative merits of these two approaches to running grounds in the shack? ...robert -- Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa Syracuse, New York, USA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KPA500 protection
The KAT500 to KPA500 configuration as shown on page 5, Figure 1, in the KAT500 manual allows one to then use the the KAT500 Utility to set the Default Amp Key Interrupt based on SWR value. I find this method and configuration works very satisfactorily. 73 Bob, K4TAX Message: 12 Date: Thu, 18 Mar 2021 22:35:47 + From: Andy Durbin To:"elecraft@mailman.qth.net" Subject: Re: [Elecraft] KPA500 protection Message-ID: Content-Type: text/plain; charset="iso-8859-1" "How does a LP100 protect against stupid errors?" LP-100A is designed to open the key line when SWR exceeds a user defined threshold. When I make a mistake it is often the first to trip. 73, Andy, k3wyc __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K4 Mailing list?
Yes, in groups.io. 73, Bill WE5P Comfortably Numb > On Mar 19, 2021, at 21:49, Gary Smith wrote: > > Maybe I misunderstood so I should ask, is > there a mailing list devoted to the K4? I > looked on the Elecraft page but saw > nothing about it. > > Thanks & 73, > > Gary > KA1J > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to weave...@usermail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K4 Mailing list?
Maybe I misunderstood so I should ask, is there a mailing list devoted to the K4? I looked on the Elecraft page but saw nothing about it. Thanks & 73, Gary KA1J __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] best grounding technique
Home runs from each piece to the bus bar. If mounting in a metal rack, bond each piece to the rack and then home runs from each rack to the bus bar. 73, Nate, N0NB -- "The optimist proclaims that we live in the best of all possible worlds. The pessimist fears this is true." Web: https://www.n0nb.us Projects: https://github.com/N0NB GPG fingerprint: 82D6 4F6B 0E67 CD41 F689 BBA6 FB2C 5130 D55A 8819 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] best grounding technique
Whoa, nice! Can you let the list know when it's available? I'd love to pick up a copy. On Fri, Mar 19, 2021, 19:22 Jim Brown wrote: > As it happens, Ward and I are putting the finishing touches on the > second edition. The first one is very goodd, the second will be even better. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] best grounding technique
On 3/19/2021 2:27 PM, Walter Underwood wrote: Personally, I would re-read the appropriate chapter in the ARRL Grounding and Bonding book. That explains the goal of bonding equipment and gives best practices. This book will be the best $23 you spend on grounding and bonding. I’ve already read it twice, but there is no way to remember the whole thing, so I always refer back to it. https://www.arrl.org/shop/Grounding-and-Bonding-for-the-Radio-Amateur As it happens, Ward and I are putting the finishing touches on the second edition. The first one is very good, the second will be even better. My take on it, about five years ago, are in this slide pdf for talks I've done at Pacificon, Visalia, and some clubs. http://k9yc.com/GroundingAndAudio.pdf 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] best grounding technique
The ARRL book on Grounding and Bonding is very clear. Each piece of gear has its OWN wire/strap to a common grounding point (a copper pipe mounted on a wall is a common method, that being connected to the system ground; everything to the building safety ground, more ground rods every 2x the depth of the rod). Look at it this way, say a discharge comes in through your antenna, into the radio, connected to your computer and other devices. Would you prefer that energy goes only through the radio to ground (losing the radio) or in a series through everything else in the shack too? The 'fan' mode you mention is preferred, give that energy EVERY chance to seek ground BEFORE it passes through your gear. Energy shunts (PolyPhase devises for example) at the antenna entry point are another must. One per feed. I suggest reading that book, several times (it's complex) for a better understanding. 73, Rick NK7I On 3/19/2021 2:06 PM, Robert G Strickland via Elecraft wrote: It seems that there are two ways of running grounding wires in the shack: FAN - from a common ground point, individual grounding wires are run to each piece of equipment; LINKING - a ground wire is run from each piece of equipment to the next and eventually ending in a common ground point. What's the group wisdom on the relative merits of these two approaches to running grounds in the shack? ...robert __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] best grounding technique
Personally, I would re-read the appropriate chapter in the ARRL Grounding and Bonding book. That explains the goal of bonding equipment and gives best practices. This book will be the best $23 you spend on grounding and bonding. I’ve already read it twice, but there is no way to remember the whole thing, so I always refer back to it. https://www.arrl.org/shop/Grounding-and-Bonding-for-the-Radio-Amateur wunder K6WRU Walter Underwood CM87wj http://observer.wunderwood.org/ (my blog) > On Mar 19, 2021, at 2:06 PM, Robert G Strickland via Elecraft > wrote: > > It seems that there are two ways of running grounding wires in the shack: FAN > - from a common ground point, individual grounding wires are run to each > piece of equipment; LINKING - a ground wire is run from each piece of > equipment to the next and eventually ending in a common ground point. What's > the group wisdom on the relative merits of these two approaches to running > grounds in the shack? > ...robert > -- > Robert G Strickland, PhD ABPH - KE2WY > rc...@verizon.net.usa > Syracuse, New York, USA > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > Message delivered to wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] best grounding technique
It seems that there are two ways of running grounding wires in the shack: FAN - from a common ground point, individual grounding wires are run to each piece of equipment; LINKING - a ground wire is run from each piece of equipment to the next and eventually ending in a common ground point. What's the group wisdom on the relative merits of these two approaches to running grounds in the shack? ...robert -- Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa Syracuse, New York, USA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft contact- K3 power problem
All, Thanks for the tips and help. It looks like my problem was just a bad/corrodued connection in the radio. After I removed the covers and reseated the 100 Watt amp, and other modules and cables everything appears to be working normal. Thanks! Gordon - N1MGO On 3/17/2021 8:55 AM, chetsubacco...@snet.net wrote: Hi Gordon, I had some power problems with my K3 a few months ago, and could not get any useful help by e-mailing support, but with the kindness of others on the Elecraft owners lists I was able to troubleshoot and repair it on my own. One of the power MOSFETs in the low power amp section had failed. I also believe the bias adjustments in that section had shifted, and it probably helped that the 100W amp had to be removed for that and then reseated into its connectors. If you desire to go that route, I can send you my notes on the process. 73, Chet, N8RA -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Gordon LaPoint Sent: Tuesday, March 16, 2021 3:53 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Elecraft contact I have a problem with my K3, only 60-70 watts out, even after calibration on 5 and 50 watts. This is the first time I have had a problem with the K3, after years of good operation.I emailed support over a week ago and called them on the phone last week, still have not heard anything. What is the correct email for support?? Thanks, Gordon - N1MGO K3 #5651 On 3/16/2021 15:33 PM, Paul Van Dyke wrote: Lisa Jones retired 2+ years ago from Elecraft.. She and Madelyn Gomez (made...@elecraft.com) were a team Madelyn Gomez ... made...@elecraft.com and her team can help you today.. BUT go thru Support or Tech support 1st !! as they take the load off the team and it works so much faster Paul Van Dyke - KB9AVO On Tue, Mar 16, 2021 at 3:22 PM Bob G3PJT wrote: David isnt this for you not me? 73 Bob On 16/03/2021 15:27, W2xj wrote: Context? Sent from my iPad On Mar 16, 2021, at 9:59 AM, Bob G3PJT wrote: David Try Lisa Jones, her email is sa...@elecraft.com and the other one is pa...@elecraft.com And the mod page which I found useful is https://la3za.blogspot.com/search/label/K2 73 Bob __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to w...@w2xj.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to pvandyke1...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to gordon.lapo...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to chetsubacco...@snet.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
