[Elecraft] Elecraft CW Net Announcement
Good Evening, It was a soggy, gray week. The hummingbirds returned after a three week absence. They told me exactly where the feeder should be located. Today the sky cleared for an hour. Long enough to see the moon. The snout and fore-paws of the rabbit on the moon were showing. Then back to fog. The sun is shooting streams of ions at us. I expect the bands to sound like hard, fine snow blowing on corn snow. Yes, there should be over a dozen different words for snow. A small sunspot is showing. The auroral oval has increased since yesterday. Solar flux remains low, near the bottom-most reading of the recent doldrums. Luckily the sun is shining longer in the Northern hemisphere, charging the ionosphere just a little longer each day. Even soggy Oregon weather cannot stop that. Please join us on (or near): 14050 kHz at 2200z Sunday (3 PM PDT Sunday) 7047 kHz at z Monday (5 PM PDT Sunday) 73, Kevin. KD5ONS - B - None that I more love than myself. You are a counsellor; if you can command these elements to silence, and work the peace of the present, we will not hand a rope more; use your authority: if you cannot, give thanks you have lived so long, and make yourself ready in your cabin for the mischance of the hour, if it so hap. Cheerly, good hearts! Out of our way, I say. Exit G - I have great comfort from this fellow: methinks he hath no drowning mark upon him; his complexion is perfect gallows. Stand fast, good Fate, to his hanging: make the rope of his destiny our cable, for our own doth little advantage. If he be not born to be hanged, our case is miserable. Exeunt __ 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 5:47 PM, Nate Bargmann wrote: 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. Commercial communication site practice is to have a "halo" - large-diameter wire or bus bar - all around the walls and tie each rack, stand-alone box, conduit, cable ladder, etc. to the "halo". This is then connected to a similar grounding system buried around the perimeter of the building tied to ground rods per code. Sounds tedious but that's what keeps the facility safe. With thanks to my late colleague, Tom Croda, the recognized national expert in the field of comm site power and grounding, who came to work for my firm after retiring from Sprint and proceeded to teach us the right way to do those things. 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 From a Clearing in the Silicon Forest Beaverton (Washington County) Oregon __ 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] Diode 95SQ015 end-of-life (K2 D10)
The difference in forward voltage drop between the 95SQ015 vs. the SR1503 under transmit load current is only about 0.15 V. Probably not worth the trouble to substitute the former. Wayne N6KR elecraft.com > On Mar 20, 2021, at 6:14 PM, Harlan Sherriff via Elecraft > wrote: > > https://www.solidstateinc.com/product/95sq015/ > Has 133 in stock > > Sent from my iPhone > >> On Mar 20, 2021, at 7:54 PM, Bruce Forsberg wrote: >> >> Just completed building a K2 kit. They had an SR1503 diode for D10 on the >> RF board. >> >> Bruce, WB6IZG >> On Sat, Mar 20, 2021 at 4:43 PM Geert Jan de Groot wrote: >>> >>> The high-current low-drop diode 95SQ015, used in the K2 (it replaced >>> D10, SB530, because of it's favorable voltage drop) seems to be out of >>> production and out of stock in the likes of Mouser, Digikey and >>> Farnell/Newark. >>> >>> I hoped the component was just replaced by a SMD version but that >>> doesn't seem to be the case. From what I can see, low-drop diodes exist >>> but not with the current ratings that the 95SQ015 has. >>> >>> Has anyone found a replacement? >>> >>> Geert Jan >>> __ >>> 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 bruce.forsb...@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 hsherr...@reagan.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 n...@elecraft.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] FS K2
FS: K2 s/n 7795. This is the basic model, 15W only, no additions, just the base radio. Just back from Elecraft K2 Support for alignment and testing so it works perfectly. Electronically and aesthetically a perfect 10. This is a conversion from a Rev A kit to Rev B but brand new. New unbuilt kits are $869.95. Yours for $800 delivered to lower 48 states. Madison W5MJ __ 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] Diode 95SQ015 end-of-life (K2 D10)
https://www.solidstateinc.com/product/95sq015/ Has 133 in stock Sent from my iPhone > On Mar 20, 2021, at 7:54 PM, Bruce Forsberg wrote: > > Just completed building a K2 kit. They had an SR1503 diode for D10 on the > RF board. > > Bruce, WB6IZG > >> On Sat, Mar 20, 2021 at 4:43 PM Geert Jan de Groot wrote: >> >> The high-current low-drop diode 95SQ015, used in the K2 (it replaced >> D10, SB530, because of it's favorable voltage drop) seems to be out of >> production and out of stock in the likes of Mouser, Digikey and >> Farnell/Newark. >> >> I hoped the component was just replaced by a SMD version but that >> doesn't seem to be the case. From what I can see, low-drop diodes exist >> but not with the current ratings that the 95SQ015 has. >> >> Has anyone found a replacement? >> >> Geert Jan >> __ >> 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 bruce.forsb...@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 hsherr...@reagan.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
Re: [Elecraft] Diode 95SQ015 end-of-life (K2 D10)
Just completed building a K2 kit. They had an SR1503 diode for D10 on the RF board. Bruce, WB6IZG On Sat, Mar 20, 2021 at 4:43 PM Geert Jan de Groot wrote: > The high-current low-drop diode 95SQ015, used in the K2 (it replaced > D10, SB530, because of it's favorable voltage drop) seems to be out of > production and out of stock in the likes of Mouser, Digikey and > Farnell/Newark. > > I hoped the component was just replaced by a SMD version but that > doesn't seem to be the case. From what I can see, low-drop diodes exist > but not with the current ratings that the 95SQ015 has. > > Has anyone found a replacement? > > Geert Jan > __ > 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 bruce.forsb...@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 arch...@mail-archive.com
[Elecraft] Diode 95SQ015 end-of-life (K2 D10)
The high-current low-drop diode 95SQ015, used in the K2 (it replaced D10, SB530, because of it's favorable voltage drop) seems to be out of production and out of stock in the likes of Mouser, Digikey and Farnell/Newark. I hoped the component was just replaced by a SMD version but that doesn't seem to be the case. From what I can see, low-drop diodes exist but not with the current ratings that the 95SQ015 has. Has anyone found a replacement? Geert Jan __ 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 3/20/2021 8:57 AM, Wes wrote: If Rick's comment is accurate, and I have no reason to think otherwise, then what it states is in direct conflict with what one co-author (K9YC) has preached for years, that each box should connect to the next and there is only one connected to the ground system. He even calls it madness to use individual connections to a common ground bus. Ward's text on this topic does, include my recommendations for "daisy-chain" bonding of interconnected equipment, but also downgrades it in favor of a star WITHIN THE STATION, and with an emphasis on keeping bonding connections short. He includes a photo I provided of W6GJB's neatly packaged station for his contesting trailer, showing a copper pape bonding bus just behind the equipment, with bonding conductors to it from each piece of gear. The emphasis is on keeping bonding conductors very short, both to minimize power line buzz and potential differences between equipment in a lightning event. He shows how an Al sheet laid on top of the operating desk can serve as both a bonding plane and minimize induction onto cables laid on it. And he has incorporated my advice that the loop area of interconnecting cables and bonding cables should be minimized to prevent magnetic coupling by bundling or lacing them together. There's also very good text on proper shield connections (the Pin One Problem), bypassing of unshielded conductors at penetrations of enclosures. There's material on the use of ferrite chokes to prevent RF in the shack, how to deal with end-fed antennas with a feedpoint in the shack, and lots of other good stuff. Another goal, covered in the last chapter which is not yet done, is to address second floor shacks. Outside the shack, there's very good discussion of towers, bonding of the entire premises, ground rods, connection methods, and so on. Everything conforms to NEC and good engineering practice. 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
Having a bus that runs the length of an operating desk with all the equipment connected to it by short straps is not that different from bonding each piece of equipment to the ones next to it. But it allows you to remove one unit without breaking the "chain." This is contrasted to the "star" system, in which each piece of equipment is grounded to a central point with a relatively long ground lead. 73, Victor, 4X6GP Rehovot, Israel CWops #5 Formerly K2VCO https://www.qsl.net/k2vco/ On 20/03/2021 17:57, Wes wrote: Interesting. I don't have (and probably won't buy) the book, but here we have a disconnect---no pun intended. If Rick's comment is accurate, and I have no reason to think otherwise, then what it states is in direct conflict with what one co-author (K9YC) has preached for years, that each box should connect to the next and there is only one connected to the ground system. He even calls it madness to use individual connections to a common ground bus. This pretty much sums up why I'm not in the market for the book. Wes N7WS On 3/19/2021 2:44 PM, Rick NK7I wrote: 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
Interesting. I don't have (and probably won't buy) the book, but here we have a disconnect---no pun intended. If Rick's comment is accurate, and I have no reason to think otherwise, then what it states is in direct conflict with what one co-author (K9YC) has preached for years, that each box should connect to the next and there is only one connected to the ground system. He even calls it madness to use individual connections to a common ground bus. This pretty much sums up why I'm not in the market for the book. Wes N7WS On 3/19/2021 2:44 PM, Rick NK7I wrote: 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
[Elecraft] Elecraft 80 Meter Net ... 01:00 utc Sunday Night/Mon Morning
We will do our weekly crap shoot and Try for 3.815 as I never know the mood or how the band is populated at that hour Keep Smiling Paul - KB9AVO 80 Meter Net Control __ 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] KX2 tx low power on 80M SSB
Dave, try doing the Calibrate Transmit Gain that is in the Utility under Calibration. I had that exact problem in the 80 & 10 meter band. Tech at Elecraft told me to do this. That fixed the problem. I had to do this several times & found it worked better on a old dummy load than it did on one I built from Elecraft. The old one was not exactly 1:1 on the 80 & 10 meter band. Don't know why that made any difference, but it did. 73,Reed W4JZ __ 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] P3 not displaying correctly
Let me first say that I am new to using a panadapterHowever, it has worked fine since I got it a month ago. But now it doesn't seem to reflect what I am hearing on the K3S (which I got at the same time). I am listening to an S9+ CW signal on 80m but do not see the signal on the P3. I believe that I have seen signals a lot weaker than this one in the last month... Also, I do not see any of the normal noise along the bottom of the spectrum display on any band, except 10m. I find this weird because, on 15m the noise level is higher but there is no noise displayed on the P3. But when I switch to 10m, which is noticeable quieter, I can see the noise across the bottom. I have made no changes to wiring or connections. Thanks, Mike NJ2OM -- Sent from: http://elecraft.365791.n2.nabble.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
Re: [Elecraft] KX2 tx low power on 80M SSB
Dave, I have that exact problem with my KX2 on 10m. See my recent thread here: https://www.mail-archive.com/elecraft@mailman.qth.net/msg247537.html Elecraft support said that situation is indicative of a failure in the output stage, and my KX2 is currently back at elecraft for repair. I sent it back in early March. I will update my reflector thread with the outcome of the repair, so watch this list for details. I never use 80 on that radio, so I’m not sure if the issue existed there, unfortunately. Nate W1NAT Sent from my iPhone > On Mar 20, 2021, at 6:10 AM, Dave Jones wrote: > > Hello all I wonder if anyone has come across this problem that I have with > my KX2. After initial turn on or after changing bands to 80M the tx power > output is 2W if the power setting is 10W or above. If I keep talking into the > mic (MH3) and pressing and releasing the PTT then the power will gradually > increase to the correct level. If the power is set to any thing below 10W > then the power output level is correct. > > The CW power output on CW is not affected at all and if I enable the CW on > SSB feature not only does that give the correct carrier power output but the > SSB power level is also correct after a brief press on the key. Once this has > been done the power output is correct until the radio is turned off and then > back on or the band is changed to another band and then back to 80M. > > 80M is the only band affected, all other bands give the correct output. > Hopefully someone is able to help me with this problem. > > Thank you Dave VK4FD > > __ > 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 ndjedi...@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 arch...@mail-archive.com
[Elecraft] KX2 tx low power on 80M SSB
Hello all I wonder if anyone has come across this problem that I have with my KX2. After initial turn on or after changing bands to 80M the tx power output is 2W if the power setting is 10W or above. If I keep talking into the mic (MH3) and pressing and releasing the PTT then the power will gradually increase to the correct level. If the power is set to any thing below 10W then the power output level is correct. The CW power output on CW is not affected at all and if I enable the CW on SSB feature not only does that give the correct carrier power output but the SSB power level is also correct after a brief press on the key. Once this has been done the power output is correct until the radio is turned off and then back on or the band is changed to another band and then back to 80M. 80M is the only band affected, all other bands give the correct output. Hopefully someone is able to help me with this problem. Thank you Dave VK4FD __ 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
