Re: [Elecraft] OT: FS: T1 QRP Auto Tuner
Also have a factory assembled T1 that is surplus to my needs after I installed the internal tuner in my KX3. $120 shipped in the US. 73 Mike N4MHO On Wed, Jul 15, 2015 at 7:46 AM, Jim Sheldon w...@cox.net wrote: I have an Elecraft T1, QRP auto tuner, that I'd like to see get a good home. It will handle 20 watts (5 times normal QRP levels) with ease and it has latching relays to keep battery usage to a minimum. It will match a wide range of antenna configurations and only needs a half watt for tuning. A special cable (optional) is available from Elecraft that integrates it with a Yaesu FT-817 and will operate using the FT-817's Tune button. This one was built by me and never used other than initial testing. Since the only QRP rig I have now is a KX3 (has the internal ATU) I no longer need this. Elecraft's price for the kit is $139.95 plus shipping. I'm asking $130 for it, including shipping to anywhere in the U.S. (PayPal or USPS money order accepted). I'd prefer not to ship it internationally due to the high cost of postage. Please email me off list to w...@cox.net for pix or further details and the f irst I'll take it (by date/time of the email) gets right of first refusal. Jim Sheldon, W0EB 2029 East Evanston Dr. Park City, KS 67219-1618 __ 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 m...@tropo.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 on 50 MHz - noise and possible harmonics
In recent testing of a new Cloud-IQ SDR, I found the same thing at home. Two tones about 500 Hz apart and reoccurring at about the same interval. I used my KX3 to track it down to the 100BASE-T ethernet cables. The noise floor on the SDR is 140 dB and was able to pick it up. 73 Mike N4MHO On Mon, Jun 29, 2015 at 11:26 PM, Steve Lund k6um.el...@gmail.com wrote: I have all these spurious signals in my K3, too. They are caused by my wireless router. But are the result of using wired connections to my office computers. When I remove the LAN cables these signals disappear, along with many on the hf bands. I have received the ferrites recommended by K9YC. The plan is to install them on Wednesday. I have both the #43 and #61 material. Steve, K6UM On Mon, Jun 29, 2015 at 7:43 PM, Chris Hallinan challi...@gmail.com wrote: I've been playing around with 50 MHz USB/CW down at the low end of the band with a plain ol' dipole. I'm curious about noise and birdies and other people's experience, as I really don't know what to expect. I have a steady S3/4 noise level at all frequencies with the preamp off, jumping to solid S5 with the preamp engaged. I have several strong signals (probably harmonics of some interference??) as follows listening in USB mode, preamp off: 50.026: S4 50.057: S6 50.087: S5 50.117: S6 50.148: S6 50:178: S4 and more as I tune up. Notice the 30KHz spacing. These are all steady 2-tone signals with perhaps a couple hundred hertz difference in the two tones. No variation with day/night or propagation as far as I can tell. They all disappear when the antenna is disconnected. First, is my background noise level local or should that be expected on 50 MHz? And what are these signals spaced every 30 KHz or so? Could this be broadcast overload way up here on 50 MHz? I do have a fairly close 1580 KHz AM station broadcasting 1100 watts during daytime, and 110 at night, but I use an Array Solutions BCB filter. What have others experienced? Thanks and 73, Chris K1AY -- Life is like Linux - it never stands still. __ 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 k6um.el...@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 m...@tropo.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] JT65 requirements, and a possible external reference-locking option for the KX3
On Mon, Jul 16, 2012 at 9:25 PM, Wayne Burdick n...@elecraft.com wrote: But back to JT65. If it turns out the KX3's temperature compensation can't provide the stability you'd like, we could design an external 10- MHz locking module for it. This module would be called a KX3EXREF -- the equivalent of the K3EXREF, which does the same job for the K3. The only drawback to such a module is that it would have to be installed in place of the planned 2-meter module. It would use the SMA connector as the 10-MHz input. Would this be of interest? Even in place of the 2 meter module, yes! Frequency stability will be important long term for current and future modes. 73 Mike W4LNA __ 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] Possible power supply option for the KX3
An ATX power supply is not the best of choices. PC power supplies often regulate on the low voltage outputs for the processor, and the higher voltage outputs are slaved to that. Without a suitable load on the main output, the voltage regulation on the other outputs can be very poor. 73 Mike W4LNA On Wed, Jun 20, 2012 at 5:07 PM, Mel Farrer farrerfo...@yahoo.com wrote: Well, I use a older Sony laptop supply rated at 15 VDC at 3A to run my FT817 QRP I put two silicon diodes in series on the output. Been running for over 5 years now. I modified a MFJ 16010-ST tuner to include a micromatch using a couple of old subminiture battery indicator meters. Thats my QRP station until the KX3 arrives, hi. Mel, K6KBE --- On Wed, 6/20/12, Val v...@vip.bg wrote: From: Val v...@vip.bg Subject: Re: [Elecraft] Possible power supply option for the KX3 To: elecraft@mailman.qth.net Date: Wednesday, June 20, 2012, 1:39 PM Phil, I modified a 300W ATX PS from my junk box 5 years ago and using it every day since with my K2 and K3. A lot of dxing and contests, not a single issue. The quality of the PC PS differs too much, but a good many of them are not worse than the other swithers. 73, Val LZ1VB A shot in the dark. Has anyone adapted a standard ATX-type computer power supply 12V DC output to run a transceiver (K2, VHF, etc)? I have one that could be used if feasible. Pro/con experiences appreciated. -- 73 de K2ASP - Phil Kane Elecraft K2/100 s/n 5402 __ 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] K3iNetwork iPhone App Users
Supporting the KX3 would be a worthwhile enhancement for all of us waiting on one. 73 Mike W4LNA On Tue, Apr 3, 2012 at 8:03 PM, Michael Downs k...@verizon.net wrote: If you are a user of K3iNetwork, which is an app I developed for the iPhone that allows you to remotely control your K3 with your iPhone, iPod Touch, or iPad via a WiFi or the Internet, I would like to hear from you. I want to create an email group of K3iNetwork users who would like to help me decide on enhancements to the app. For the curious, you can find K3iNetwork here: http://itunes.apple.com/app/k3inetwork/id463639462?mt=8 Thank you for your interest in K3iNetwork. 73, Mike ks7d __ 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] Flex 3000 or KX3
Keep in mind that for any of the Flex radios, you will need a relatively modern, fast computer as well with a Firewire interface. I would expect that you'd spend at least $1000 for a computer good enough and still expect to do some tweaking. A recent Mac will also work, but not under emulation. BootCamp with a copy of Win 7 ($$) is suggested for a Mac. 73 Mike W4LNA On Mon, Apr 2, 2012 at 7:52 PM, Steve Hamon smha...@gmail.com wrote: Hello--I am perplexed about the choice of which HF rig to get. I just passed my General and am trying to put together my first shack. I have heard fantastic, rave reviews about the Flex and also about the KX3. My only concerns about the KX3 is that after putting out about $1,500 for the basic KX3 and Tuner and Filter added, I still will only have a 10 watt unit. I want it to be my mobile and my base unit. Will I have to chuck out another thousand bucks for the 100 watt amp? Thanks and 73s--Steve -- Steve Hamon __ 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] RE, XG3 and KX3 Development
On Fri, Sep 16, 2011 at 4:32 PM, Edward R. Cole kl...@acsalaska.net wrote: Having just mentioned the XG3 in another post, I have to affirm how neat the XG3 is. It nearly fulfills my needs for a signal generator (adding modulation would complete that). I have used it for troubleshooting. For calibrating. For testing MDS on my receivers. For measuring filter curves. I second the adding modulation capability. I/Q even. :) 73 Mike W4LNA __ 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
