[Elecraft] KX3 in Sweepstakes
I worked a huge number of QRP stations during the CW Sweepstakes this weekend. Many more than has been usual. Must be all of those new KX3 operators taking it out for a spin. 73, Mike K2MK -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-in-Sweepstakes-tp7565078.html Sent from the Elecraft mailing list archive at 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
[Elecraft] KRC2
Hi to the group, I would like to know if the KRC2 can be used to interface a Kenwood rig to the KAT500. The KRC2 can read the Kenwood RS232 protocol and know its frequency. The KAT500 needs a BCD code to switch bands (with the K3 it gets it from the Aux connector). The KRC2 has a connector (J4) which can be set to Input or Output BCD code. My questions are : does the KRC2 outputs the correct BCD code needed by the KAT500 when the Kenwood rig is set to a frequency ? Can each band limits be set with the KRC2 utility software ? I would prefer personnal experience than theory, I have carrefully read the manual ! Thanks and best regards. Georges F6DFZ __ 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
Re: [Elecraft] blonde moment
My hair is white, but I qualify. My ooopsie involved RF gain. Getting to know the sub is a fun new adventure. 73, Mike NF4L On Nov 4, 2012, at 5:01 PM, Jim Hoge wrote: > Have a laugh with me because boy, do I feel stupid. I finally installed the > subreceiver in my K3, serial 18xx and was going nuts with the audio. Whenever > I pressed the sub button, the audio cut out from my right headphone. I went > back into the config menu 3 times, double checking all the settings when it > finally hit me there is a little knob on the front, lower left side of > the radio marked AF- sub. Wow! Whodathunkit? The radio works like a champ. > Now, if there were only an upgrade for me > > 73, > Jim W5QM > __ > 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 __ 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
Re: [Elecraft] KX3 in Sweepstakes
Worked a few on mine on 20M using buddipole in back yard. Lots of fun. - Original Message - From: Mike K2MK [mailto:k...@comcast.net] Sent: Monday, November 05, 2012 03:36 AM To: elecraft@mailman.qth.net Subject: [Elecraft] KX3 in Sweepstakes I worked a huge number of QRP stations during the CW Sweepstakes this weekend. Many more than has been usual. Must be all of those new KX3 operators taking it out for a spin. 73, Mike K2MK -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-in-Sweepstakes-tp7565078.html Sent from the Elecraft mailing list archive at 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 __ 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
Re: [Elecraft] KX3 in Sweepstakes
Hooked mine up to my Butternut HF2V vertical and got on 80 "early" Sunday morning. Ran it at 5 watts on internal 2.5 amp hour NiMH batteries. Made 25 contacts for 19 sections in just over an hour with it and the battery voltage only dropped from 10.2 to 9.6 indicated. Not a serious contest effort and 80 meters only but I did submit a "check-log". I heard KH7X in Hawaii on the low end and he was booming in. He changed bands before I had a chance to call him so I don't know if my setup could have made the trip. I had absolutely no problems with hearing anyone, even the really weak ones nestled right up to the 40 over 9 stations and only 2 of the stations I called failed to answer and they had signals that were less than S8 here in Kansas. Beautiful little rig and I couldn't be happier with it. 72/73/OO Jim - W0EB FP#-616 > I worked a huge number of QRP stations during the CW Sweepstakes > this > weekend. Many more than has been usual. Must be all of those new KX3 > operators taking it out for a spin. > > 73, > Mike K2MK __ 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
[Elecraft] kx3 is there txco ocxo ????
hello is any one know id the kx3 have tcxo or ocxo i cant see anything on the leaflet vy 73 E.P g0uut __ 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
[Elecraft] KX3 testing
Eric, Wayne; I would like to use the KX3 as a signal source for extended periods, in the order of 10-15 minutes or more. Other than the noted power-foldback with PA temp characteristic, is there any other component in the KX3 design which would not be happy with an extended transmit use? I can work around the power foldback with PA temp issue, but would hate to degrade or risk failure of another internal component in this use. Thanks in advance, Howard Hoyt - WA4PSC __ 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
Re: [Elecraft] kx3 is there txco ocxo ????
E.P. Look at the specifications in the manual. The specifications state that the stability is +/-1ppm over 0-50 degC. Whether or not that meets your criteria for a TCXO or an OCXO is to be determined by your expectations of stability. For me, the TCXO or OCXO terms alone are meaningless, they must relate to the specifications for each. For example, a TXCO having +/- 9 ppm stability has worse stability than a non-TCXO with a stability of +/-5ppm. 73, Don W3FPR On 11/5/2012 9:31 AM, paim wrote: > hello > is any one know id the kx3 have tcxo or ocxo i cant see anything on the > leaflet > > __ 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
Re: [Elecraft] KX3 testing
Howard, I am not Eric or Wayne, but the KX3 is specified for continuous duty at 3 watts, so if your output power needs are at 3 watts or less, you should be able to go keydown all day long at that power level. 73, Don W3FPR On 11/5/2012 9:40 AM, Howard Hoyt wrote: > Eric, Wayne; > > I would like to use the KX3 as a signal source for extended periods, in > the order of 10-15 minutes or more. Other than the noted power-foldback > with PA temp characteristic, is there any other component in the KX3 > design which would not be happy with an extended transmit use? I can > work around the power foldback with PA temp issue, but would hate to > degrade or risk failure of another internal component in this use. > > __ 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
Re: [Elecraft] kx3 is there txco ocxo ????
TCXO. On Mon, 05 Nov 2012 14:31:59 + (GMT), you wrote: >hello >is any one know id the kx3 have tcxo or ocxo i cant see anything on the >leaflet > > >vy 73 >E.P g0uut >__ >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 __ 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
Re: [Elecraft] kx3 is there txco ocxo ????
hello Don i cant see it sorry i will look again. however you did answer this but what is the device using is it tcxo or what i like to know it look great radio 2nd palce on Rob sherwood list as well nice . vy 73 E.P g0uut From: Don Wilhelm To: paim Cc: "elecraft@mailman.qth.net" Sent: Monday, 5 November 2012, 14:48 Subject: Re: [Elecraft] kx3 is there txco ocxo E.P. Look at the specifications in the manual. The specifications state that the stability is +/-1ppm over 0-50 degC. Whether or not that meets your criteria for a TCXO or an OCXO is to be determined by your expectations of stability. For me, the TCXO or OCXO terms alone are meaningless, they must relate to the specifications for each. For example, a TXCO having +/- 9 ppm stability has worse stability than a non-TCXO with a stability of +/-5ppm. 73, Don W3FPR On 11/5/2012 9:31 AM, paim wrote: > hello > is any one know id the kx3 have tcxo or ocxo i cant see anything on the > leaflet > > __ 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
Re: [Elecraft] KX3 in Sweepstakes
I noticed that too..seemed like there were almost as many Q stations as there were A stations; and some loud ones at that. :) On 11/5/12, Mike K2MK wrote: > I worked a huge number of QRP stations during the CW Sweepstakes this > weekend. Many more than has been usual. Must be all of those new KX3 > operators taking it out for a spin. > > 73, > Mike K2MK > > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/KX3-in-Sweepstakes-tp7565078.html > Sent from the Elecraft mailing list archive at 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 > __ 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
[Elecraft] K2 Trouble shooting
Hi to the List, I was wondering if there is anyone living close to Chester (in England) that would be willing to assist me with trouble shooting my K2. The basic problem is with getting the rig showing full power output at QRP levels and fully setup. If you can help please feel free to phone me on the mobile below. I will say I'm deaf and speaking on a phone is quite arduous for me so be patient please :-) -- Gary McKelvie G7USC +44(0)1244 301818 +44(0)7968 501863 __ 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
Re: [Elecraft] KX3 testing
You can key down as long as you like, assuming you don't hit the PA's temperature limit (which causes an exit from transmit mode). 73 Wayne N6KR On Nov 5, 2012, at 6:40 AM, Howard Hoyt wrote: > Eric, Wayne; > > I would like to use the KX3 as a signal source for extended periods, > in > the order of 10-15 minutes or more. Other than the noted power- > foldback > with PA temp characteristic, is there any other component in the KX3 > design which would not be happy with an extended transmit use? I can > work around the power foldback with PA temp issue, but would hate to > degrade or risk failure of another internal component in this use. > > Thanks in advance, > > Howard Hoyt - WA4PSC > __ > 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 __ 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
[Elecraft] Looking for QRP Balun
I'm looking for a small 4:1 QRP balun to use with my KX3 (hence, it needs only 10 watt power capability). Can anyone direct me to a design or an existing product? Thanks. Ed/K8SZN __ 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
Re: [Elecraft] Looking for QRP Balun
Try the BL2 on Elecraft's web page. I have two of these and they work fine up to 200W. And they're quite small too. Matt Zilmer Consultant - Product Management Dept. Magellan Navigation / MiTAC Digital Corp. Tel: (909) 394-6052 Cell: (909) 730-6552 In status quo voluntas non sufficit -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ed Ketterer Sent: Monday, November 05, 2012 7:54 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Looking for QRP Balun I'm looking for a small 4:1 QRP balun to use with my KX3 (hence, it needs only 10 watt power capability). Can anyone direct me to a design or an existing product? Thanks. Ed/K8SZN __ 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 __ 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
[Elecraft] K3 Contest Operation Question
When I run QRP in major contests like this weekend I search and pounce and work my way up the band bottom to top. I run with the filter on 2.7. Using N3FJP logger and winkeyer I was wondering is there a way I can have a keyboard shortcut to switch the K3 from the 2.7 to the 400 filter so I don't have to double tap the xfil button. Looking for ideas. __ 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
Re: [Elecraft] Looking for QRP Balun
Ed, The Elecraft BL1 can be built for either the 4:1 or 1:1 configuration. Alternately, the BL2 uses a switch to change from a 1:1 ratio to 4:1. If that is physically too big for you, use the same design as either the BL1 or BL2 and wind it on the binocular core used in the K2 PA output (Elecraft PN E690011) - in that case, the enclosure will be one of your choosing (I suggest non-metallic to eliminate sneak paths that are not obvious on casual inspection). 73, Don W3FPR On 11/5/2012 10:54 AM, Ed Ketterer wrote: > I'm looking for a small 4:1 QRP balun to use with my KX3 (hence, it needs > only 10 watt power capability). Can anyone direct me to a design or an > existing product? Thanks. > > Ed/K8SZN > > > __ > 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 > __ 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
Re: [Elecraft] blonde moment
Heck no, Don! What this country needs is more white headed and white bearded men and what's more, bald counts as white! 73, Tom On Mon, 05 Nov 2012 00:14:21 -0500, Don Wilhelm wrote: >I used to have dark hair, but now it is more white. Does that mean >that I have "gone blonde"? > >73. >Don W3FPR [snip] Amateur Radio Operator N5GE ARRL Lifetime Member QCWA Lifetime Member __ 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
Re: [Elecraft] K3 Contest Operation Question
I basically ignore the filter switches and use the WIDTH control, setting it to what's needed at the time. The narrow roofing filter automagically kicks in at 400 Hz and below. 73, Brian, K0DTJ On 11/3/2012 6:37 PM, John Watkins wrote: > When I run QRP in major contests like this weekend I search and pounce and > work my way up the band bottom to top. I run with the filter on 2.7. > > Using N3FJP logger and winkeyer I was wondering is there a way I can have a > keyboard shortcut to switch the K3 from the 2.7 to the 400 filter so I don't > have to double tap the xfil button. > __ 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
[Elecraft] Looking for QRP Balun
Hi - I've been using a radiowavz "QRP DX 40-10" 4:1 balun. It's not on their product sheet. It will handle 100w ssb, 25w cw. Its about 4" long and 1.5" in diameter. Very light. Just looks like a smaller version of their full power baluns. I use it to feed a portable OCF dipole. I understand they sell this to TenTec for their portable multiband qrp antenna. You need to contact radiowavz directly to purchase it. I've been using it for a few months now with some extended use like the cqww-ssb and it seems to be ok. I don't know about how weather proof it is - time will tell. You can also build one - pretty easy - checkout the 4:1 balun design that was published with articles associated with this antenna: http://www.hamuniverse.com/k4iwlnewwindom.html I built several of these antennas and balun for field use. I purchased the radiowavz one for the nicer package. Terry, NS6D I'm looking for a small 4:1 QRP balun to use with my KX3 (hence, it needs > only 10 watt power capability). Can anyone direct me to a design or an > existing product? Thanks. > > Ed/K8SZN > __ 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
[Elecraft] Subject: Re: KX3 testing
I run the KX3 on 28 MHz as IF for my 2m transverter at 3w in FM. No issues, so far, and I get a bit "windy" at times running the mouth over 3-minutes. But for 10+ minutes you might want to reduce power even more to be safe? 73, Ed - KL7UW __ 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
Re: [Elecraft] Looking for QRP Balun
Ed and All, Here is a link to a bunch of variations on 4:1 baluns you can construct yourself. http://www.google.com/search?q=4:1+balun&hl=en&prmd=imvns&tbm=isch&tbo=u&source=univ&sa=X&ei=6PqXUNXAPM-l2AW454DoBQ&ved=0CDUQsAQ&biw=1463&bih=709 As for something commercial, the Elecraft BL-1 is a good option, and it can be constructed as either a 1:1 or 4:1--your choice. The BL-2 is better yet, as it is switchable! Dave W7AQK __ 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
Re: [Elecraft] kx3 is there txco ocxo ????
The freq stability is rated at 1ppm which is +/- 28-Hz on 10m or +/- 50-Hz on 6m. Since 6m is to be the IF for the 2m module that is not adequate for some digital modes (like JT65 used in eme). Often I select the 20-Hz bw on JT65 so if the radio drifts out of that signal decoding will be interupted. Wayne has talked about a possible EXREF for the KX3 which I suppose would offer better stability locked to an external reference (like what was done for the K3?). I get +/- 6Hz on 432 with my K3+EXREF and a 432-28 PLL locked transverter. 73, Ed - KL7UW __ 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
[Elecraft] KX3-2M?
Any word when the 2m module for the KX3 is expected? I heard a "rumor" of early 2013.but?? Maybe the design team is looking at the trade-off between the 2M and a EXREF for internal installation? I would like to get both and expect one to be housed external to the radio. 73, Ed - KL7UW __ 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
Re: [Elecraft] KRC2
Hi Georges, The KAT500 will work with all HF - 6M rigs. It only needs RF to tune and to select band and antenna. There is a frequency counter built into the KAT500 to detect frequency changes. 73, Eric --- www.elecraft.com On 11/5/2012 12:42 AM, Georges Ringotte F6DFZ wrote: > Hi to the group, > > I would like to know if the KRC2 can be used to interface a Kenwood rig to > the KAT500. > > The KRC2 can read the Kenwood RS232 protocol and know its frequency. > The KAT500 needs a BCD code to switch bands (with the K3 it gets it from the > Aux connector). > The KRC2 has a connector (J4) which can be set to Input or Output BCD code. > > My questions are : does the KRC2 outputs the correct BCD code needed by the > KAT500 when the Kenwood rig is set to a frequency ? > Can each band limits be set with the KRC2 utility software ? > > I would prefer personnal experience than theory, I have carrefully read the > manual ! > > Thanks and best regards. > > Georges F6DFZ > __ > 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 __ 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
Re: [Elecraft] K3 Contest Operation Question
John, Since you are operating from a logger, I suggest you set up macros to control the filter width. Use the BW command. See the K3 programmer's reference. 73, Don W3FPR On 11/3/2012 9:37 PM, John Watkins wrote: > When I run QRP in major contests like this weekend I search and pounce and > work my way up the band bottom to top. I run with the filter on 2.7. > > Using N3FJP logger and winkeyer I was wondering is there a way I can have a > keyboard shortcut to switch the K3 from the 2.7 to the 400 filter so I don't > have to double tap the xfil button. > > __ 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
Re: [Elecraft] blonde moment
Let's end this thread in the interest of keeping list volume and SNR under control. 73, Eric List Moderator Eric --- www.elecraft.com On 11/5/2012 9:26 AM, N5GE wrote: > Heck no, Don! > > What this country needs is more white headed and white bearded men > and what's more, bald counts as white! > > 73, Tom __ 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
Re: [Elecraft] kx3 is there txco ocxo ????
Ed thank you great info thank you for you time and help vy 73 E.P g0uut From: Edward R Cole To: Elecraft@mailman.qth.net Sent: Monday, 5 November 2012, 18:12 Subject: Re: [Elecraft] kx3 is there txco ocxo The freq stability is rated at 1ppm which is +/- 28-Hz on 10m or +/- 50-Hz on 6m. Since 6m is to be the IF for the 2m module that is not adequate for some digital modes (like JT65 used in eme). Often I select the 20-Hz bw on JT65 so if the radio drifts out of that signal decoding will be interupted. Wayne has talked about a possible EXREF for the KX3 which I suppose would offer better stability locked to an external reference (like what was done for the K3?). I get +/- 6Hz on 432 with my K3+EXREF and a 432-28 PLL locked transverter. 73, Ed - KL7UW __ 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 __ 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
[Elecraft] qrp balun
Ed, I built http://file:///Users/william/Downloads/Balun%20Manual%20-%20final-2.pdf and it works just fine. It comes from the NJQRP webpage. I've used it at 5 watts but the author says that he ran it up to 100 watts without heating. Bill, WV1N __ 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
Re: [Elecraft] kx3 is there txco ocxo ????
There have been some reports of transmit drift in early KX3 units, especially modes that are long duration, like JT65. A modification has been made in the firmware that allows for making a custom temperature correction curve that is used to compensate the oscillator as the PA heats up. It changed the situation for me on JT65-HF from one where my transmit signal would vary unacceptably over a 48 second period, to one that is entirely acceptable. The calibration process does require access to a stable signal source (like a K3 that is warmed up and in a steady-temp room). 73, Bob, WB4SON __ 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
Re: [Elecraft] KXBC3 Shipment Notice
Received mine today for s/n 835. :-) It was shipped on Friday and I'm only a couple of days from Elecraft by UPS or USPS. 72/73 de Jim - AD6CW On 11/2/2012 4:59 PM, Mercury wrote: > Received notice today of a shipment from Elecraft. The KXBC3 is the only item > I'm expecting. My KX3 serial number is 834. > > William > AI4VE > > Sent from my iPad > __ 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
Re: [Elecraft] kx3 is there txco ocxo ????
okay Bob thank you for this info however it is very importent to have ocxo or txco or vcxo any of them when working digi or ssb mode . vy 73 E.P g0uut From: Bob To: Elecraft@mailman.qth.net Sent: Monday, 5 November 2012, 18:50 Subject: Re: [Elecraft] kx3 is there txco ocxo There have been some reports of transmit drift in early KX3 units, especially modes that are long duration, like JT65. A modification has been made in the firmware that allows for making a custom temperature correction curve that is used to compensate the oscillator as the PA heats up. It changed the situation for me on JT65-HF from one where my transmit signal would vary unacceptably over a 48 second period, to one that is entirely acceptable. The calibration process does require access to a stable signal source (like a K3 that is warmed up and in a steady-temp room). 73, Bob, WB4SON __ 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 __ 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
[Elecraft] [OT] Re: qrp balun - how about not QRP?
Can I divert slightly? I want to build this balun (http://www.combotec.com/projects/balun14/balun14.html) to use with a 40m delta loop from my K3/100, but the only PVC I have is about 1.25" in diameter, not 40mm (1.5"). How do I compensate for the smaller diameter? Google searches haven't been productive. Tnx es 73, Randy, KS4L On Nov 5, 2012, at 12:43 PM, William Schmidt wrote: > > Ed, > > I built > http://file:///Users/william/Downloads/Balun%20Manual%20-%20final-2.pdf and > it works just fine. It comes from the NJQRP webpage. I've used it at 5 > watts but the author says that he ran it up to 100 watts without heating. > > Bill, WV1N > > __ > 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 __ 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
[Elecraft] tx rx filter kx3
i am looking on one youtube for kx3 [the guy said there it is sdr with knob ok il over sdr ] but why there is no info what the max tx filter ssb am cw and on rx what the max on ssb am cw is if it is like sdr this can go like 15khz tx rx . vy 73 E.P g0uut __ 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
Re: [Elecraft] [OT] Re: qrp balun - how about not QRP?
Randy, That "balun" will not be very effective below 6 meters. The inductance of each winding is about 1000 nHy, which provides only 60 ohm choking impedance at 10 MHz. Sorry, but there are designs out there on the web that do not hold up to scrutiny. An effective balun must have a choking impedance of at least 5 times the feedpoint impedance, so for a 4:1 balun (200 ohms), the impedance must be 1000 ohms or more to be effective. 73, Don w3FPR On 11/5/2012 2:16 PM, Randy Moore wrote: > Can I divert slightly? I want to build this balun > (http://www.combotec.com/projects/balun14/balun14.html) > to use with a 40m delta loop from my K3/100, but the only PVC I have is about > 1.25" in diameter, not 40mm (1.5"). How do I compensate for the smaller > diameter? Google searches haven't been productive. > __ 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
[Elecraft] FS: Fair-Rite Type 31 Mix Large Clamp-on Ferrite Cores
I have for sale a quantity of 8 large Fair-Rite type 31 mix clamp-on cores. These are the best available cores for conveniently making high performance common-mode chokes over the HF amateur bands. Fair-Rite PN is 0431177081 and the Mouser PN is 623-0431177081. I purchased these new from Mouser over the past few years. Some have been used outside on temporary contest antennas, some used inside for noise suppression in shack and on appliances. Some have not been used. All are in perfect condition mechanically and electrically with at most some slight discoloration on the exterior plastic. Closing down the station here, so no longer have a use for them. Core OD is a little over 2 inches, ID is about 1 inch and length is about 1.7 inches. Can be used to easily make multi-turn chokes even on RG-8 sized coax. Please see K9YC’s excellent tutorial on his website for extensive applications information and reference designs. The current low quantity Mouser price for these is $19.70 each. Selling all eight for $120. Your purchase includes secure packaging and USPS Priority Mail shipping to your USA address. PayPal only, please. If interested, please contact me directly via email: craig (at) powersmith (dot) net. 73 Craig AC0DS __ 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
[Elecraft] TR : KRC2
Message original Objet : Re: [Elecraft] KRC2 De : Georges Ringotte F6DFZ À : e...@elecraft.com Cc : Hi Eric, Thanks for your answer and happy to be in direct contact with you. As I said in my post, I read the KAT500 manual. What I want is an ATU who switch bands in receive, without having to tune. That's why I posted this question. Best regards. Georges Georges Ringotte F6DFZ Colonel de Sapeurs - Pompiers (er) 180, rue du Château 07120 Saint Alban - Auriolles France 06.12.51.88.15 __ 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
Re: [Elecraft] [OT] Re: qrp balun - how about not QRP?
Read all but if lazy just go to cookbook near end: http://audiosystemsgroup.com/RFI-Ham.pdf For some useful more detail analysis: http://fermi.la.asu.edu/w9cf/articles/balun.pdf Forget you ever heard of the term "balun" jim ab3cv On Mon, Nov 5, 2012 at 2:37 PM, Don Wilhelm wrote: > Randy, > > That "balun" will not be very effective below 6 meters. The inductance > of each winding is about 1000 nHy, which provides only 60 ohm choking > impedance at 10 MHz. Sorry, but there are designs out there on the web > that do not hold up to scrutiny. > An effective balun must have a choking impedance of at least 5 times the > feedpoint impedance, so for a 4:1 balun (200 ohms), the impedance must > be 1000 ohms or more to be effective. > > 73, > Don w3FPR > > On 11/5/2012 2:16 PM, Randy Moore wrote: > > Can I divert slightly? I want to build this balun > > (http://www.combotec.com/projects/balun14/balun14.html) > > to use with a 40m delta loop from my K3/100, but the only PVC I have is > about 1.25" in diameter, not 40mm (1.5"). How do I compensate for the > smaller diameter? Google searches haven't been productive. > > > > __ > 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 > > __ 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
[Elecraft] Odd behavior of Bandwidth in AM mode
Hi all, I notice that when I vary the bandwidth of reception in AM mode, my K3 appears to take that as the double-sideband bandwidth, not the audio bandwidth, while the P3 shows that value as a faux +/- audio bandwidth. For example, if I set bandwidth to 1.8 kHz, the actual audio bandwidth appears to be 900 Hz centered wherever I set the filter center frequency, while the P3 shows +/- 1.8 kHz from the tuning frequency. Not a big deal, but thought I'd point out the inconsistency. - 73 de Dave, N7AIG Dr. David McClain d...@refined-audiometrics.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
Re: [Elecraft] tx rx filter kx3
E P. Yes, the KX3 is an SDR with knobs. The function and operation of the KX3 is defined by the software (firmware) - that fact makes it an SDR. The TX and RX filters are set in the DSP section of the firmware to match the mode, so I really do not understand your question. Yes, the KX3 is not the radio defined in several computer applications that deal with SDRs. All SDRs are not identical. 73, Don W3FPR On 11/5/2012 2:32 PM, paim wrote: > i am looking on one youtube for kx3 [the guy said there it is sdr with knob > ok il over sdr ] > but why there is no info what the max tx filter ssb am cw and on rx what the > max on ssb am cw is > if it is like sdr this can go like 15khz tx rx . > > > vy 73 > E.P g0uut > __ > 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 > __ 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
[Elecraft] More KAT500 PTT Questions
Folks, I am trying to understand the tuning approach taken by the KAT500, specifically how it relates to the PTT line. The KAT500 manual (Rev. A) on page 13 spells out precautions to take when using the KAT500 with a non-Elecraft amplifier. This appears to be necessary to protect some amplifiers from damage, in case the PTT line opens up while the amp is energized and putting out power. Page 5 of the manual states that the key line opens whenever a KAT500 tune operation occurs. So should my concern for non-Elecraft amp damage only relate to band changes, as page 13 implies, or will PTT open whenever the KAT500 senses a high SWR and retunes, even if on the same band? It would be impractical for me to anticipate KAT500 retuning when moving into a new band segment and try to shut down the amp per the procedure on page 13. --Ed-- __ 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
Re: [Elecraft] Fair-Rite Type 31 Mix Large Clamp-on Ferrite Cores
The ferrite cores have been sold. 73 Craig AC0DS __ 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
Re: [Elecraft] More KAT500 PTT Questions
Ed, The KAT500 is not *that* automatic. It will not automatically re-tune even if it senses a high SWR. You must tell it to tune. Once it has been tuned to each antenna and bend segment, returning to that set of tuning parameters is automatic - just go to that frequency and antenna and the proper tuning will be recalled. 73, Don W3FPR On 11/5/2012 3:41 PM, Ed G wrote: > or will PTT open whenever the KAT500 senses a high SWR and retunes, even if > on the same band? It would be impractical for me to anticipate KAT500 > retuning when moving into a new band segment and try to shut down the amp > per the procedure on page 13. > __ 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
Re: [Elecraft] More KAT500 PTT Questions
That's not true, Don... the KAT500 *will* auto-tune if/when VSWR exceeds a (configurable, per-band) threshold. A lot of consideration is being put into different ways of handling "hot-switching" situations with various types of amplifiers. The currently-posted provisional manual may not be reflective of the final result of this consideration. 73, ~iain / N6ML On Mon, Nov 5, 2012 at 1:18 PM, Don Wilhelm wrote: > Ed, > > The KAT500 is not *that* automatic. It will not automatically re-tune > even if it senses a high SWR. You must tell it to tune. Once it has > been tuned to each antenna and bend segment, returning to that set of > tuning parameters is automatic - just go to that frequency and antenna > and the proper tuning will be recalled. > > 73, > Don W3FPR > > On 11/5/2012 3:41 PM, Ed G wrote: >> or will PTT open whenever the KAT500 senses a high SWR and retunes, even if >> on the same band? It would be impractical for me to anticipate KAT500 >> retuning when moving into a new band segment and try to shut down the amp >> per the procedure on page 13. >> > > __ > 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 __ 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
[Elecraft] KX3 Compact power supply
Any suggestions out there for a 5 amp very small power supply for portable use? Thanks George NE2I __ 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
Re: [Elecraft] KX3 Compact power supply
Just found the SBU60-105, 5.25 amp today at Jameco Scott AA0AA Sent from my iPhone On Nov 5, 2012, at 3:35 PM, GEORGE CORTEZ wrote: > Any suggestions out there for a 5 amp very small power supply for > portable use? > > Thanks > > George NE2I > > > __ > 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 __ 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
Re: [Elecraft] More KAT500 PTT Questions
OK, that is a revelation to me. Sorry that I did not read that in the manual. I stand down in light of more informed designers and testers.. 73, Don W3FPR On 11/5/2012 4:31 PM, iain macdonnell - N6ML wrote: > That's not true, Don... the KAT500 *will* auto-tune if/when VSWR > exceeds a (configurable, per-band) threshold. > > A lot of consideration is being put into different ways of handling > "hot-switching" situations with various types of amplifiers. The > currently-posted provisional manual may not be reflective of the final > result of this consideration. > > 73, > > ~iain / N6ML > > > > On Mon, Nov 5, 2012 at 1:18 PM, Don Wilhelm wrote: >> Ed, >> >> The KAT500 is not *that* automatic. It will not automatically re-tune >> even if it senses a high SWR. You must tell it to tune. Once it has >> been tuned to each antenna and bend segment, returning to that set of >> tuning parameters is automatic - just go to that frequency and antenna >> and the proper tuning will be recalled. >> >> 73, >> Don W3FPR >> >> On 11/5/2012 3:41 PM, Ed G wrote: >>> or will PTT open whenever the KAT500 senses a high SWR and retunes, even if >>> on the same band? It would be impractical for me to anticipate KAT500 >>> retuning when moving into a new band segment and try to shut down the amp >>> per the procedure on page 13. >>> >> __ >> 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 > __ > 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 > __ 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
Re: [Elecraft] [OT] Re: qrp balun - how about not QRP?
Thanks, guys. I've read K9YC's paper before, but needed to be reminded of it! 73, KS4L On Nov 5, 2012, at 1:46 PM, Jim Miller wrote: > Read all but if lazy just go to cookbook near end: > http://audiosystemsgroup.com/RFI-Ham.pdf > > For some useful more detail analysis: > http://fermi.la.asu.edu/w9cf/articles/balun.pdf > Forget you ever heard of the term "balun" > > jim ab3cv > On Mon, Nov 5, 2012 at 2:37 PM, Don Wilhelm wrote: >> Randy, >> >> That "balun" will not be very effective below 6 meters. The inductance >> of each winding is about 1000 nHy, which provides only 60 ohm choking >> impedance at 10 MHz. Sorry, but there are designs out there on the web >> that do not hold up to scrutiny. >> An effective balun must have a choking impedance of at least 5 times the >> feedpoint impedance, so for a 4:1 balun (200 ohms), the impedance must >> be 1000 ohms or more to be effective. >> >> 73, >> Don w3FPR >> >> On 11/5/2012 2:16 PM, Randy Moore wrote: >> > Can I divert slightly? I want to build this balun >> > (http://www.combotec.com/projects/balun14/balun14.html) >> > to use with a 40m delta loop from my K3/100, but the only PVC I have is >> > about 1.25" in diameter, not 40mm (1.5"). How do I compensate for the >> > smaller diameter? Google searches haven't been productive. >> > >> >> __ >> 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 >> > __ 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
Re: [Elecraft] More KAT500 PTT Questions
Well, it does actually say this in the manual: "In AUTO mode, if you QSY such that the SWR rises above 1.8:1 the KAT500 will automatically retune when you transmit on the new frequency. The KAT500 will open the key line to disable your amplifier briefly until the tune cycle is completed. The new frequency and settings are stored in memory." That 1.8:1 threshold is configurable, per-band ... and the opening of the keying line during auto-tune is the part that can be problematic for some types of amplifier, so further conditions are being considered 73, ~iain / N6ML On Mon, Nov 5, 2012 at 1:59 PM, Don Wilhelm wrote: > OK, that is a revelation to me. Sorry that I did not read that in the > manual. > I stand down in light of more informed designers and testers.. > > 73, > Don W3FPR > > On 11/5/2012 4:31 PM, iain macdonnell - N6ML wrote: >> That's not true, Don... the KAT500 *will* auto-tune if/when VSWR >> exceeds a (configurable, per-band) threshold. >> >> A lot of consideration is being put into different ways of handling >> "hot-switching" situations with various types of amplifiers. The >> currently-posted provisional manual may not be reflective of the final >> result of this consideration. >> >> 73, >> >> ~iain / N6ML >> >> >> >> On Mon, Nov 5, 2012 at 1:18 PM, Don Wilhelm wrote: >>> Ed, >>> >>> The KAT500 is not *that* automatic. It will not automatically re-tune >>> even if it senses a high SWR. You must tell it to tune. Once it has >>> been tuned to each antenna and bend segment, returning to that set of >>> tuning parameters is automatic - just go to that frequency and antenna >>> and the proper tuning will be recalled. >>> >>> 73, >>> Don W3FPR >>> >>> On 11/5/2012 3:41 PM, Ed G wrote: or will PTT open whenever the KAT500 senses a high SWR and retunes, even if on the same band? It would be impractical for me to anticipate KAT500 retuning when moving into a new band segment and try to shut down the amp per the procedure on page 13. >>> __ >>> 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 >> __ >> 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 >> > > __ > 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 __ 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
Re: [Elecraft] KX3 Compact power supply
5 amps may be more than you need for the KX3. Radio shack has a little 3 amp switching ps that I think is perfect. It's abt half the size and weight of the KX3. I think it sells for abt 60 bucks. Don, n5lz Sent from my iPad On Nov 5, 2012, at 3:35 PM, GEORGE CORTEZ wrote: > Any suggestions out there for a 5 amp very small power supply for > portable use? > > Thanks > > George NE2I > > > __ > 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 __ 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
[Elecraft] DSP Noise Reduction and contesting
I've read Fred Cady's book and the manual, and I'm still at sea - anyone have opinions or recommendations about using NR for CW or phone contesting? I assume the settings are probably different. -- 73, Pete N4ZR Check out the Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com. For spots, please go to your favorite ARC V6 or VE7CC DX cluster node. __ 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
Re: [Elecraft] KX3 Compact power supply
I don't believe you really need 5 amps, 3.5 or 4 should be plenty for the KX3 -- I'm running mine on a 12 volt 3.5 amp regulated wall wart right now and it works fine to 10 watts out. Here's another one that isn't terribly expensive from Marlin P. Jones & Associates ( www.mpja.com). It's a 12 volt 4.16 amp supply with overvoltage protection and current limiting. It's original use was to power home medical CPAP devices (breathing mask for people with sleep apnea). These are listed as used, but they look pretty decent in their pictures. (disclaimer - I have no financial interest in MPJA, just a satisfied customer.) Lists for $12.95 plus UPS ground shipping. Jim - W0EB http://www.mpja.com/12V-416A-Desktop-Supply-Used-Respironics/productinfo/18948+PS/ >> Any suggestions out there for a 5 amp very small power supply for >> portable use? >> >> Thanks >> >> George NE2I >> >> > __ 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
[Elecraft] kx3 amp 1.5kw with 10w
Dan yes look on this link http://www.dc9dz.de/en/tsunami40k.html vy 73 E.P g0uut __ 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
[Elecraft] K3/KPA-500 SWR's
Guys, I put up a new tribander. I had a difficult time tuning it up so that CW/RTTY segments allowed full KPA-500 power without tripping w/o a tuner. It's OK that higher phone segments need a tuner. Part of the problem had to do with the differences seen between K3 and KPA-500 SWR's. Show below is a sample on 15M. The coax was taken off the back of the amp and plugged into the K3. Thus no cable length differences. The procedure was to tune up the antenna with the K3 so that the bottom end of the CW band was just under 2:1. Then use the amp. Zap, the amp trips thinking the SWR is 2.3:1. I thought it was something in the feedline shorting, arcs or bad traps. Not so apparently. The bottom line is the KPA-500 reads higher by as much as 0.4 in SWR. Yes different SWR meters read differently. However here, the result is that the amp will trip earlier than if one believed the K3 SWR. Truth is apparently hard to divine. There also is a power level dependence in the KPA-500 SWR. 200 ->500 watts increases SWR 0.2. The K3 shows no difference from 10-100 W. FINAL RESULTS AFTER ALL ANTENNA TRIMMING COMPLETE Freq K3 SWR KPA-500 SWR 21 1.7 1.9 21.025 1.4 1.7 21.06 1.1 1.3 21.100 1 1.1 21.21.2 1.6 21.31.5 2.0 I can't answer how the two compare into a dummy load. The point at 21.1 suggests the two would agree. I would like some understanding of this effect. I'm all for protection, but I'm not for over protection. 73 de Brian/K3KO - No virus found in this message. Checked by AVG - www.avg.com Version: 2012.0.2221 / Virus Database: 2441/5375 - Release Date: 11/05/12 __ 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
[Elecraft] K1 Alignment question
Hi, I built a K1 this summer that I have been getting great reports on from other ops I've had QSOs with. However I wonder if I have everything aligned correctly. What I notice, particularly when I have the filters active, is that the receive signal strength is strongest when I've tuned below what would match my 700hz side tone. I don't really know if this is typical or if I don't have something adjusted correctly. thanks, Curt, N1TAB __ 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
Re: [Elecraft] K1 Alignment question
Hello Curt, Your filters are probably off center. Install Fldigi and plug in the K1 headset plug into your computer mic plug. Then I think it's C21 that you use to center the filter, if I remember well. I also think you have to redo the C13 alignment after that. I'm just writing this from memory, so check before you attempt anything… Don or someone better than me can give you the whole procedure. I had the same problem and it was a very easy fix. Gil. -- PGP Key: http://keskydee.com/gil.asc On Nov 5, 2012, at 7:02 PM, Curtis Johnson wrote: > Hi, > > I built a K1 this summer that I have been getting great reports on from other > ops I've had QSOs with. However I wonder if I have everything aligned > correctly. What I notice, particularly when I have the filters active, is > that the receive signal strength is strongest when I've tuned below what > would match my 700hz side tone. I don't really know if this is typical or > if I don't have something adjusted correctly. > > thanks, > > Curt, N1TAB > __ > 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 __ 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
Re: [Elecraft] WTB: Unassembled K-2 or Partial
If you do decide to buy an older K2 kit, ask about the serial number. Those with s/n below 4060 will possibly need firmware updates. These are actual hardware upgrades that are not trivial. My K2 was one of the first few hundred sold, and I had to do this. Unless you can get a great deal, and know how good the builder's skills are and why it was not completed, your best bet is a brand new K2 kit which will not need to be upgraded. 72/73 de Jim - AD6CW On 11/4/2012 3:00 PM, Johnny Siu wrote: > Hello Bill, > > Apart from Don's advice, you may consider a built but older version K2. > Doing the modification update to an old but functionable K2 could be > interesting. > > TNX & 73, > > > Johnny VR2XMC > __ 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
[Elecraft] FW: qrp balun
On Monday Nov 5 at 1343 EST , Bill Schmidt, WV1N wrote ... ... I built http://file:///Users/william/Downloads/Balun%20Manual%20-%20final-2.pdf ... --- - - - --- FYI All, the correct URL for the PDF is http://www.njqrp.org/balun/Balun%20Manual%20-%20final.pdf You might also be interested in the HTML (webpage) introduction at http://www.njqrp.org/balun/index.html 73, Gary KI4GGX __ 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
[Elecraft] KX3: PA options for KX3 mobile
Is anyone using the KX3 mobile with a small amp? I'm interested to know what amps are suitable for a 10 watt input / 100 watts out. I know Elecraft is planning to offer a KPA100 amp in the future but would like to make the switch on mobile operation now. Thanks! God Bless & 73! Jack - WE5ST __ 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
[Elecraft] [K2] Initial Power Up Test Partial Failure
I think I need some help. After having a K2 (SN 6280) sitting unmade for 5 years, I finally got started on it and have reached the Alignment and Test, Part 1 stage. When powered up, I get "Elecraft" and then the frequency display. However, using band+ and band- I can only see 10, 12, 15 meters - 17m tunes but not to the proper freq. 20-80m all just say 15151. for freq. although the number of significant digits can be changed with the tuning Rate pushbutton and the mode change works. the menu button works, as does A, B, rit xit, display of voltage and current is normal. relays click with band changes even when moving through the lower bands when they just display the 15151 reading. All resistance checks for front panel and control boards are normal. Regulated 8 and 5 volts are correct. The 4 mhz oscilator is running. The voltages on the IOC on the rf board are normal. Each time I press band+ (or band-), pin 28 of the IOC dips from the nominal 5v as it should. One other thing: the pre/att switch does not trigger the associated relays and there is no signal on pin 28 of the IOC. (This may be unrelated to the band problem) Voltage checks of the MCU are normal with the exception of: pin 18 is 5v instead of 0v, pin 25 is 5v instead of 0v, pin 33 is 0v instead of 5v. However this may be perfectly normal as the rf board is only minimally built and the table is for a fully built unit. Needless to say, I have checked carefully on the three boards for bad joints, unsoldered joints, or bridged joints, although it is certainly possible i have missed something. At this point I know AUX bus signals are going to the IOC (or at least the voltage is fluctuating when the panel buttons are pressed) so I am left wondering if either 1) the IOC is not working correctly, or 2) the MCU is not sending the proper signals. Or -- some other explanation? Any help someone could provide would be greatly appreciated. Ed Kleckner Hansville, WA ekl...@hotmail.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
