[Elecraft] KPA500 creeks
All My KPA500 running 400 watts on 6M scatter/FT8 really creaks as it expands, etc. Was there ever a fix/workaround to this? I could loosen all the Z plate screws I guess. Mike, va3mw __ 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] Less Than Perfect Antennas [was Flumoxed]
Thread closed so we don't thrash it any more.. 73, Eric Mooderator /elecraft.com/ On 12/10/2018 1:32 PM, Ron Genovesi wrote: Veered oh yes. Worse than that, it been literally beat to death! Many times over.and over and over Ron Genovesi N3ETA Sent from my iPhone On Dec 10, 2018, at 7:20 AM, Bob McGraw K4TAX wrote: Before Eric steps in, let me say "let's end this discussion. It has veered too far from the original posting". 73 Bob, K4TAX __ 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] Less Than Perfect Antennas [was Flumoxed]
Veered oh yes. Worse than that, it been literally beat to death! Many times over.and over and over Ron Genovesi N3ETA Sent from my iPhone > On Dec 10, 2018, at 7:20 AM, Bob McGraw K4TAX wrote: > > Before Eric steps in, let me say "let's end this discussion. It has veered > too far from the original posting". > > 73 > > Bob, K4TAX > > > > > __ > 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 n3...@coastside.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
Re: [Elecraft] Less Than Perfect Antennas [was Flumoxed]
Yes, and to think I so deftly avoided using that "b" word that ends in "n" in the original post. The original post was just an observation that antennas do not need to be perfect to work ... and sometimes work well. I'm beginning to think that any post on any ham radio subject will eventually devolve into repetitive discussions about that dreaded "b" thing, the "c" thing, or both. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 12/10/2018 7:20 AM, Bob McGraw K4TAX wrote: Before Eric steps in, let me say "let's end this discussion. It has veered too far from the original posting". 73 Bob, K4TAX __ 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] Less Than Perfect Antennas
I used about 90 ft of wire 20 ft up and 2 20 ft sloping radials, all connected to K2 directly. I was able to work many stations on 80m SSB in a 200 mile radius. All wire "concoctions" can be treated as a dipole but not necessarily fed in the middle. So they are likely 1) very inefficient when fed by coax 2) require a balun because of off-center feeding especially if the radio is not battery operated, 3) are not good for DX unless they are high enough, and 4) they may be directional where they are > 1/2 wave because of strong lobes. Ignacy, NO9E -- 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] KX3 has died
Dave, Help is not a tab, it is an item in the header line - look to the right of "File" and "View". 73, Don W3FPR On 12/9/2018 7:58 PM, Dave Sublette wrote: When I bring up the KX3 utility, there is no tab labeled Help or Troubleshooting or MCU. I now get a "KX3 is not responding" message. __ 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] K3 RX IN/OUT and Splitters
Frank, You are definitely on the right track. The RX IN/OUT jacks are for the insertion of an external preamplifier or a splitter to tap off the main TX antenna. If using only RX IN, that antenna input will be used when you select RX ANT. Since you are using a separate RX antenna and want to split it to the K3 as well as another receiver, put the "T" or splitter on the antenna, one output to the K3 RX IN and the 2nd to the other receiver. On the K3, you will have to activate the RX ANT - if you do not, the receive will be from the main TX antenna. 73, Don W3FPR On 12/6/2018 6:15 PM, Frank VO1HP wrote: I am want to split my BOG RX antenna between my K3 RX IN jack and the ANT port on my AFEDRI-LAN SDR at my remote site. I am going to access the SDR remotely using SDR Console and run CW SKIMMER on the ARRL DX Contest PC in the home shack. My K3 has no built in Tuner and no 2nd RX. I have been looking at various schemes people are using to split antenna feeds. Some are using a splitter between the RX IN/OUT jacks on the K3. What is the point of doing that? The MAIN Ant port is always used as TX antenna. When RX ANT (Tap) is activated the RX IN Port is connected to the RX/TX and the MAIN ANT Port is connected to the RX OUT port. I see people talking about the RX ANT "LOOP" . As far as I can see there is no RX ANT "LOOP". What is the point of the splitter between those those two jacks.? The jacks are labelled RX IN and RX OUT. The labels imply that the RX antenna also appears at the RX OUT jack but that is not the case. I am just going to connect a BNC "T" in the BOG RG6 line at the radio and feed the K3 RX IN port and the AFEDRI-LAN ANT port. If that doesn't work satisfactorily ...I'll use a passive splitter in the RG6. __ 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] Less Than Perfect Antennas [was Flumoxed]
Before Eric steps in, let me say "let's end this discussion. It has veered too far from the original posting". 73 Bob, K4TAX __ 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] My recent and general posting
I did not suggest a particular type balun as I do not know the specifics of the antenna system being used. Thus based my recommendation to contact the company for a discussion with them. I feel they are better qualified than any of us in this regard. As to measuring one balun model and slamming the entire product line is certainly not the best demonstration of ones understanding the subject. All of the comments allegedly slamming me or berating me for my statements of general nature are done without knowledge of what exactly I have, how I use the items and the measurements I've made. These are real world results and not lab measurements or computer generated results. To each his own and I'll stand by mine and the likewise results. 73 Bob, K4TAX __ 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] KX3 Lives!
Thanks to all who offered advice. This morning I removed the KXPA100 from the loop. The KX3 utility was then able to download and install the latest firmware. Of course this leaves the question about what is going on with the KXPA100. I will troubleshoot that as I have time. But for now, I know the KX3 and the FTDI-USB cable are good. 73, Dave, K4TO __ 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] Less Than Perfect Antennas [was Flumoxed]
The most extensive measurements of real live dipoles using chokes and baluns has been done by Rick DJ0IP. He made hundreds, if not thousands of measurements with asymmetric dipoles. He measured common mode current with the feeder straight down, off-centre and reversed on several bands to test his ideas. This all culminated in products that Spiderbeam now sell world wide, likely the only ocfd that work properly. He also has a section on his website called the Battle of the Baluns which is worth a read. He's not into physics just sound, repeatable, practical measurements. David G3UNA > On 09 December 2018 at 18:47 Jim Brown wrote: > > > I wonder if anyone using or recommending products like this have ever > measured them. They are not easy to measure. You can't measure them > accurately with a single-port antenna analyzer. > > N6KT, a member of our contest club is building a station in the > Caribbean and asked me to measure a Balun Designs 1115T common mode > choke (often called a 1:1 current balun). It looks NOTHING like it's > data sheet, which shows an approximately flat high choking impedance > over the HF bands. It would be USELESS on 40, 80, and 160M! From what > I've seen them write about chokes, I don't believe that they understand > how common mode chokes work, and I certainly wouldn't suggest that > someone ask them for advice. > > The Wireman 8232 is based on W2DU's excellent work from many years ago. > He built chokes with 50, 100, and 200 of the largest #73 Fair-Rite beads > that fit over RG142. This size bead of this material has the unique > property of relatively constant choking impedance in the HF spectrum, > but you have to a LOT of them. Only the 200-bead choke has sufficient > choking impedance to handle high power and kill receive noise, and > that's what he recommended, yet most products sold as a "W2DU balun" > have many fewer. The larger #31 cores are not useful at HF until you > wind multiple turns through them, but are often sold for use as a string > of beads on coax. > > How many beads are in the 8232? Are they Fair-Rite #73? > > 73, Jim K9YC > > On 12/9/2018 5:33 AM, Bob McGraw K4TAX wrote: > > Balun Designs, both 1:1 and 4:1 for use with tuners.I have both because > > I also have a folded dipole that I feed direct. > > > > I suggest you give the folks at Balun Designs a call and discuss your exact > > needs. Take their advice. > > Also see the DJ0IP site for details on baluns. Just Google DJ0IP. > > > > And I use the 8232 common mode choke from The Wireman. > __ 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
