[Elecraft] K3 Tune works, XMIT button produced no power.
transmit power is set to 10 watts. mode is AM, but that doesn't seem to matter. When I press tune into a dummy load/swr meter, it tunes normally: The K3 shows swr and power on it's meters. external swr meter show power also. swr is 0.0 on both the K3 and the external swr meter. When I press xmit: The K3 shows swr nothing, power shows one bar. Also, power does not show on an external swr meter. I have no clue. I was testing an old S2-30 antenna tuner into a dipole. The antenna SG-230 tuner is completely out of the circuit now. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Tune-works-XMIT-button-produced-no-power-tp7593998.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Tune works, XMIT button produced no power.
Clarification: I press the tune button and it tooks. When I press the the xmit button little happens. When I press and hold down the xmit button it goes into permanent rune mode and it show output and swr just fine on the K3 and the swr meter. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Tune-works-XMIT-button-produced-no-power-tp7593998p7593999.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 Message delivered to arch...@mail-archive.com
[Elecraft] [K3] Flickering ALC/
Executive summary, intermittent connections in a trap vertical caused the ALC to go crazy. I suddenly had bizarre behavior when adjusting my mike level for JT65. When trying to get the ALC to be 4 bars it was all over the place. It was flickering on and off and sometimes the tones were modulate at a rhythmical rate. Power level was pretty constant. I thought it might be RF getting back into the shack or the PC picking up RF or bizarre driver behavior. I thought it might have something to with the new inverted V antenna causing RF to get back in the shack. None of this was the problem. The R3 Vertical was doing. It's been up for a very long time and when I switch to the new antenna all the problems go away. Larry Lopez N2CVS. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Flickering-ALC-tp7593800.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.
What's interesting is that all of 60 Hum and it's harmonics are gone. The line out is 2. I have the Mike volume: Balance is all the way over to one channel. Volume in full I adjusted line out to flat top and halved it. The JT65/JT9 display looks good now. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Hum-JT65-JT9-and-Vox-Revisited-tp7588936p7589325.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.
Thanks Jim Rick for your help. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Hum-JT65-JT9-and-Vox-Revisited-tp7588936p7589326.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.
So I decide to give up and set the audio level right. So I get the free for private use sound card oscilloscope http://www.zeitnitz.de/Christian/scope_en. I picked this one because it was first when I goggled sound card oscilloscope. Very nice. But gee, there are 2 channels for the mike and a balance control. One channel has the signal one channel has chaff. So I set the balance control to kill the chaff. I then raise the volume in the K3 line out until it flat tops and I back it off by 2. next step, get it to sample at 48000. obsessive, I am. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Hum-JT65-JT9-and-Vox-Revisited-tp7588936p7589252.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 Message delivered to arch...@mail-archive.com
[Elecraft] [K3] split mode apparently not working with WSJTX JT9.
I'm not sure what I am doing wrong. WSJTX does not seem to be setting VFO B frequency with the K3 in split mode and with WSJTX in split mode. Many web pages sat that in split mode WSJTX moves the split fequency around in 500 Hz increments so that WSJTX can cover the 4K Hz width of the combined JT65/JT9 allocation. The 6K KHz audio filter seems to be working fine for receive. I just never see the WSJTX software setting the split frequency. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-split-mode-apparently-not-working-with-WSJTX-JT9-tp7589127.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] split mode apparently not working with WSJTX JT9.
Thank you for helping. I have set K3 to split, the TX arrow points down. I have set WSJTX for Split in the configuration check box. I have no controller, WSJTX talks to K3 directly using elecraft USB serial cable (from elecraft elivered Monday). WSJTX cat control gets and sets frequency correclty on main vfo. but I don't see anything happening on VFO B frequency when I select 3 K Hz. Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-split-mode-apparently-not-working-with-WSJTX-JT9-tp7589127p7589136.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] split mode apparently not working with WSJTX JT9.
I'll try it tonight. I bet it's because I haven't been setting the frequency on the VFO B !!! -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-split-mode-apparently-not-working-with-WSJTX-JT9-tp7589127p7589153.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] split mode apparently not working with WSJTX JT9.
I needed to clone A- B I needed to go to DATA A mode. Thank you very much !!! Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-split-mode-apparently-not-working-with-WSJTX-JT9-tp7589127p7589157.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] split mode apparently not working with WSJTX JT9.
I needed to clone A- B I needed to go to DATA A mode. Thank you very much !!! Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-split-mode-apparently-not-working-with-WSJTX-JT9-tp7589127p7589159.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3: SSB generation
The 15 K Hz signal from the DSP is a SSB signal. This is the second IF frequency (from the antenna side). When this is mixed with the 8.230 Mhz in you end up with the sum and difference with the 15KHz: Namely 8.215 and 8.245 MHz. The 8.215 MHz filter is used to remove the unwanted 8.245 MHz component leaving the desired first IF frequency K1LI [via Elecraft] wrote: Thanks for writing, Lyle. I am curious, then, why the (K3) SSB signal is routed through a crystal filter. Is it purely a belt and suspenders approach to enforcing a limit on the bandwidth of the transmitted signal? Brian K1LI If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/K3-SSB-generation-tp7588865p7588922.html To start a new topic under [K3], email ml-node+s365791n365792...@n2.nabble.com To unsubscribe from Elecraft, click here http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=365791code=bGF3bG9wZXozQGdtYWlsLmNvbXwzNjU3OTF8MjU5MTAzNDE2. NAML http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-SSB-generation-tp7588865p7588924.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3: SSB generation
The schematics show two internal crystal filters: one on the receive path (2 poles) K3 RF Board It's marked BW 14 kHz. 8215.0 KHz. This has no relay to bypass it. one on the transmit path (4 poles) KREF3 REF/2ND TX IF It's marked 8215.0 kHz, BW=4 kHz This has a relay to move to bypass it. These seem to be in addition to the 5 user accessible crystal filters. So there seems to be large quantities of belts and suspenders. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-SSB-generation-tp7588865p7588926.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 Message delivered to arch...@mail-archive.com
[Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.
This is actually covered already but I need to mention it. When the WSJTX waterfall started losing signals into the noise I noticed that there was a neat periodic set of signals that lined up with the frequency ticks. Eventually it dawned on me that they were 120 Hz apart and eventually I found a 60 Hz fundamental. What I found is that the the line out was picking up the linear power supply that was behind it. What I also found out was that as the K3 got closer the the transmitter came on. So the magnetic field from the current spikes from the diodes in the power supply were being picked up line transformers in the K3. So I moved the power supply. Since the transformers get rid of ground loops I wouldn't complain too much. End of Story. PS it was really unnerving to move the K3 and have it turn on. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Hum-JT65-JT9-and-Vox-Resolved-tp7588936.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.
I was wildly optimistic in this. A second source of hum is the switching supply of the laptop. It's similar to the power supply hum. Even though it's clearly a switching supply. Curiosly the laptop need 12 volts. So perhaps I can pick that off of the linear power supply. Or maybe run everything off of a battery. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Hum-JT65-JT9-and-Vox-Resolved-tp7588936p7588941.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K3] Hum JT65/JT9 and Vox. Resolved.
I switched to a Creative Sound Blaster X-Fi Go! USB dongle and that got rid of the hum from the laptop charger. I got this originally because the desktop I use has no sound support at all. It was an extremely cheap server box that runs Linux. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Hum-JT65-JT9-and-Vox-Resolved-tp7588936p7588949.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 Message delivered to arch...@mail-archive.com
[Elecraft] [K3] Installation of KBF3 and KFL3A-6K was easy.
This is just in case someone out there has misplaced trepidation. Installation KBPF3 and KFL3A-6K was easy. It took an hour making believe it was brain surgery. In a pinch you can get a wrist strap (or even a static mat) at radio shack. You want good screwdrivers. Read the instructions. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Installation-of-KBF3-and-KFL3A-6K-was-easy-tp7588878.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 Message delivered to arch...@mail-archive.com
[Elecraft] Question about Elecraft K3 Utility for Linux Revision 1.14.4.11
I've uploaded the firmware using K3 Utility. I want to save my configuration and nothing else the log contains: 02:17:11 Elecraft K3 Utility for Linux Revision 1.14.4.11 02:17:11 K3 boot loader is waiting for MCU firmware load. The firmware information section shows things like: Installed in K3 Available MCU ??.?? 4.83 and on the Configuration tab everything is grayed out. so I can't even save the configuration. Why doesn't it show the MCU installed version ? Why is the configuration tab grayed out. Now I'm really going to bed. Larry PS: The hardest part was picking up the FT1000D. It's 51 pounds !!! Of course the Astron 50 amp supply is pretty heavy too. -- View this message in context: http://elecraft.365791.n2.nabble.com/Question-about-Elecraft-K3-Utility-for-Linux-Revision-1-14-4-11-tp7588482.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Util not responding
Hi Pierfranceso: I didn't know what it was but it seemed unusually light. It worked better than the original but it din't work. I looked up the part number and a Russian web page show it was simple cable with no parts and strange connections. I knew they were strange but not this strange. I'll get or make a real cable tomorrow if I can. Otherwise I'll get it from ebay or elecraft. Thank you for you for your concern. Larry Pierfrancesco Caci [via Elecraft] wrote: Larry == Larry Lopez [hidden email] /user/SendEmail.jtp?type=nodenode=7588481i=0 writes: Larry I'm going to test the cable in the morning. Larry I have two cables neither which works. Larry The one which came with the rig seems to be a cross over cable. Larry The one I tested is an APC connection cable which just happens Larry to have continuity on pin 2. if with APC connection cable you mean the ones used on UPSes by APC, be careful that they are not plain rs232, they have some circuitry molded in the connector. At least mine does. -- Pierfrancesco Caci, ik5pvx __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] /user/SendEmail.jtp?type=nodenode=7588481i=1 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] /user/SendEmail.jtp?type=nodenode=7588481i=2 If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/K3-Util-not-responding-RESOLVED-wrong-cable-tp7588476p7588481.html To start a new topic under [K3], email ml-node+s365791n365792...@n2.nabble.com To unsubscribe from Elecraft, click here http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=365791code=bGF3bG9wZXozQGdtYWlsLmNvbXwzNjU3OTF8MjU5MTAzNDE2. NAML http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Util-not-responding-RESOLVED-wrong-cable-tp7588476p7588483.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 Message delivered to arch...@mail-archive.com
[Elecraft] RESOVLED Re: Question about Elecraft K3 Utility for Linux Revision 1.14.4.11
Getting a brand new 25-1402 cable from radio shack made everything work. It's now showing the installed firmware versions. The save configuration button is no longer shaded out. Perhaps my hacked together cable wasn't working right somehow. 2 RXD_OUT 3 TXD_IN 4 DTR_IN 5 COMMON 7 RTS_IN -- View this message in context: http://elecraft.365791.n2.nabble.com/Question-about-Elecraft-K3-Utility-for-Linux-Revision-1-14-4-11-tp7588482p7588520.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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 Util not responding
My K3 just came in by ground UPS. The serial port doesn't seem to be working. I tried K3 Util on Linux and it said K3 not responding. I got a terminal program and short receive and transmit at the Elecraft end and it echoed ok. That means that Linux, the serial port and the cable are ok. I checked the pin out of the cable. It's a straight through cable like it's supposed to be. I went to an XP system loaded K3 Util on it and tried there. It continuously tries different baud rates and never stops. I'll do some voltage measurements in a bit. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Util-not-responding-tp7588476.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Util not responding
No USB to RS232 converters were used. This is not a USB problem. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Util-not-responding-tp7588476p7588477.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Util not responding
I'm going to test the cable in the morning. I have two cables neither which works. The one which came with the rig seems to be a cross over cable. The one I tested is an APC connection cable which just happens to have continuity on pin 2. I get or make a real cable tomorrow and see if that works. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Util-not-responding-tp7588476p7588479.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 Util not responding
It was the cable sent to me. I tested it wrong and thought it was a straight through cable. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Util-not-responding-tp7588476p7588480.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Anyway to get better Low Frequency Audio response out of the K3?
Harry, What filter are you using ? It's my understanding that it's wider with a AM (6 K Hz) or FM (13 K Hz) filter. at least I home so. I bought a AM filter and my K3 hasn't arrived yet. Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/Anyway-to-get-better-Low-Frequency-Audio-response-out-of-the-K3-tp7588250p7588255.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 Message delivered to arch...@mail-archive.com
[Elecraft] Are filters bought from Inrad the same as filters bought from Elecraft ?
This is for pure information purposes. I don't even have a K3 yet. I am under the impression that all of the crystal filters that Elecraft sells except for the 5 pole filters are made by Inrad. I am also under the impression that all of the 5 pole filters are made by Elecraft in house. Do I have that right ? Does Elecraft test the incoming Inrad crystals ? The only reason is last week I ordered a filter from Inrad because they took Paypal and I realized that I didn't know if there was a difference between an Inrad or an Elecraft filter. Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/Are-filters-bought-from-Inrad-the-same-as-filters-bought-from-Elecraft-tp7588017.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Are filters bought from Inrad the same as filters bought from Elecraft ?
Now I'm in real trouble !!! FYI...Elecraft takes PayPal. Keith -- View this message in context: http://elecraft.365791.n2.nabble.com/Are-filters-bought-from-Inrad-the-same-as-filters-bought-from-Elecraft-tp7588017p7588023.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Are filters bought from Inrad the same as filters bought from Elecraft ?
I looked again, and I didn't see Paypal as an option. but then I used google and found this on the Elecraft web site: We also accept payments directly from your PayPal account. (Funds transfers only - Use our regular credit card option at checkout for cards.) Use our regular shopping cart system and chose the Order by Check/Money Order option at checkout. Please note in the comments section that you are sending payment via PayPal. Then use PayPal to transfer the total payment to pay...@elecraft.com . We will confirm receipt of the funds via email. way cool. -- View this message in context: http://elecraft.365791.n2.nabble.com/Are-filters-bought-from-Inrad-the-same-as-filters-bought-from-Elecraft-tp7588017p7588024.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] What crystal filters for the K3 are linear phase delay (constant group delay) ?
I ordered from Inrad 6KHz AM filter. I bought on ebay a Astron RS-35M Power Supply I figure even if it has something wrong with it, it will be easy to fix. Thank you for all the help. It's been mind bogglingly interesting. Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/What-crystal-filters-for-the-K3-are-linear-phase-delay-constant-group-delay-tp7587633p7587848.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft UPS deliveries
Actually the worst case is this: You take your package to Staples Friday after the last pickup. It sits at Staples until Monday afternoon. It moves by ground Tuesday - Friday. It stops over the moving over the weekend. Then completes it's trip the next week starting on Monday. *** USPS Ground moves on weekends. -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-and-FLDIGI-tp7587559p7587701.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft UPS deliveries
USPS ground is 5 days, not 5 business days. USPS ground moves on the weekends. UPS ground does not move on the weekends. UPS drop off at Staples at 5:30PM Friday doesn't get picked up until 5PM Monday This isn't a criticism of anyone. It's an explanation of what has been observed. I look at it as allowing the transceiver a short vacation before going to work. MontyS [via Elecraft] wrote: 5 business days - 7 calendar days, is nominal for coast-to-coast UPS ground. Fedex the same, although they deliver Saturdays (but not Mondays). Not much Elecraft can do besides offer options. I usually use Priority Mail if available - 2 day delivery usually. Monty K2DLJ Hi everyone! Sorry if i'm venting, but how come even the tiniest packages from Elecraft take full 7 days to arrive via UPS Ground? 1 pound package via UPS Ground, for almost $17 shouldn't take this long, should it? I understand this isn't Amazon Prime, but come on, 7 days? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] /user/SendEmail.jtp?type=nodenode=7587706i=0 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] /user/SendEmail.jtp?type=nodenode=7587706i=1 If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/KX3-and-FLDIGI-tp7587559p7587706.html To start a new topic under Elecraft, email ml-node+s365791n365791...@n2.nabble.com To unsubscribe from Elecraft, click here http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=365791code=bGF3bG9wZXozQGdtYWlsLmNvbXwzNjU3OTF8MjU5MTAzNDE2. NAML http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-and-FLDIGI-tp7587559p7587709.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 Message delivered to arch...@mail-archive.com
[Elecraft] Wanted Used Model K3
I'm after a perfectly working late model K3 with all the mods. To be sure a 10W K3 with no options would get me started. But I really need the ATU There is a price increase at the end of the month so that's my time frame. K3/10 K3 10W Xcvr. KAT3K3 ATU KBPF3 K3 Gen. Cov. RX Module KFL3A-6KK3 6 kHz, 8 pole filter KPA3K3 100W PA KTCXO3-1 K3 TCXO (0.5ppm) -- View this message in context: http://elecraft.365791.n2.nabble.com/Wanted-Used-Model-K3-tp7587710.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Elecraft UPS deliveries
wow. So probably the only delay in there is not getting it the UPS office on Friday and having it wait untiol monday afternoon. 3 days a staples. Thanks, I was sorely wrong. Larry Phil Kane-2 [via Elecraft] wrote: On 4/23/2014 5:24 AM, Larry Lopez wrote: USPS ground is 5 days, not 5 business days. USPS ground moves on the weekends. UPS ground does not move on the weekends. UPS trailers on trains - the so-called Z-trains - run 7 days a week and have the highest freight priority on Class I railroads - sometimes to AMTRAK's chagrin. (Railroad-fanning is my other hobby!) -- -- 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:[hidden email] /user/SendEmail.jtp?type=nodenode=7587745i=0 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] /user/SendEmail.jtp?type=nodenode=7587745i=1 If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/KX3-and-FLDIGI-tp7587559p7587745.html To start a new topic under Elecraft, email ml-node+s365791n365791...@n2.nabble.com To unsubscribe from Elecraft, click here http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=365791code=bGF3bG9wZXozQGdtYWlsLmNvbXwzNjU3OTF8MjU5MTAzNDE2. NAML http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-and-FLDIGI-tp7587559p7587759.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] What crystal filters for the K3 are linear phase delay (constant group delay) ?
It turns out that the Elecraft 2.7 KHz 5 pole filter is the winner according to: http://www.qsl.net/gm3woj/k3filtertestssn2203.pdf which makes me want to make my own filter. Still, I'm going to keep the 400Hz 8 pole filter which is coming with my S/N 27xx Elecraft Radio !!! -- View this message in context: http://elecraft.365791.n2.nabble.com/What-crystal-filters-for-the-K3-are-linear-phase-delay-constant-group-delay-tp7587633p7587774.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] What crystal filters for the K3 are linear phase delay (constant group delay) ?
And just for the record. If you are going to optimize for bandpass shape then you are going to have non constant group delay. If you add more crystals you can have both and the filters would be more expensive. It's a compromise and we demand this compromise. A phase linear filter looks bloody awful in terms of bandpass shape. No sharp sides. But these days the DSP can provide some of the attenuation so perhaps a compromise can be made. Which is why I like the 2.7 KHz 5 pole filter. -- View this message in context: http://elecraft.365791.n2.nabble.com/What-crystal-filters-for-the-K3-are-linear-phase-delay-constant-group-delay-tp7587633p758.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] What crystal filters for the K3 are linear phase delay (constant group delay) ?
Some of the wider filters in that paper are pretty good. The narrowest filters are not so good. The flat part of the passband has constant group delay. The skirts are awful For narrow filters it starts going weird. Larry Lopez [via Elecraft] wrote: It turns out that the Elecraft 2.7 KHz 5 pole filter is the winner according to: http://www.qsl.net/gm3woj/k3filtertestssn2203.pdf which makes me want to make my own filter. Still, I'm going to keep the 400Hz 8 pole filter which is coming with my S/N 27xx Elecraft Radio !!! If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/What-crystal-filters-for-the-K3-are-linear-phase-delay-constant-group-delay-tp7587633p7587774.html To start a new topic under [K3], email ml-node+s365791n365792...@n2.nabble.com To unsubscribe from Elecraft, click here http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=365791code=bGF3bG9wZXozQGdtYWlsLmNvbXwzNjU3OTF8MjU5MTAzNDE2. NAML http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml -- View this message in context: http://elecraft.365791.n2.nabble.com/What-crystal-filters-for-the-K3-are-linear-phase-delay-constant-group-delay-tp7587633p7587779.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] KE7X KX3 Book and Configuring: KX3, K3, KPA500, and KAT500
Hi Phil: too bad I didn't jump on it. i didn't realize it had the subreceiver !!! 73, Larry Phil Hystad-3 [via Elecraft] wrote: Don, OK, I may be expecting too much. Actually, I am not sure if I was expecting as much as I was a little bit surprised by the behavior. I didn't think that the KPA500 and KX3 communicated with each other other than RF and Key line but maybe that was enough of a difference from the K3. The K3 of course in my case has the AUX cable connections with the KPA500 and KAT500. It is not a big deal as long as this is the way it is expected to work. I was not sure if I had done something wrong or not. But, just picked up W1AW/5 MS QRP power with the KX3. Actually, it was about 6 watts. 73, phil, K7PEH On Apr 22, 2014, at 4:57 PM, Don Wilhelm [hidden email] /user/SendEmail.jtp?type=nodenode=7587681i=0 wrote: Phil, I think you may be expecting too much. Consider a parallel - a computer communicating with a printer. If you suddenly switch the printer cable to another computer, would you expect the printer to continue printing without any intervention? The printer in this comparison is the KPA500 and the two computers are the K3 and the KX3. It is not unreasonable IMHO to expect that a reset of the KPA500 would be required. If the KPA500 were simply an amplifier with no communications capability with the driving transceiver, switching from one source of RF input to another should proceed without regard to whatever is the driving device, but your KPA500 is more than just an amplifier because it can communicate with the K3 or KX3 driving transceiver. Expecting the KPA500 to switch data streams from two different transceivers with no intervening reset is not realistic. 73, Don W3FPR On 4/22/2014 7:41 PM, Phil Hystad wrote: So, is this normal behavior? I wasn't expecting any kind of comms between the K3 and the KPA500 that affects the STBY/OPER switching. It does seem that a power on/off cycle for the KPA500 is required to enable that switch. Is this designed to work this way or is this a flaw in the design or maybe a missing mini-feature of configuring two different transceivers with the KPA500. I admit to not scouring all of the documentation yet on the expected functionality of the STBY/OPER switch. 73, phil, K7PEH On Apr 22, 2014, at 4:14 PM, Don Wilhelm [hidden email] /user/SendEmail.jtp?type=nodenode=7587681i=1 wrote: Phil, Let me get this straight - the KPA500 is communicating with the K3, then you switch to the KX3 and the KPA500 does not talk with the KX3. If that is what is happening, I would expect that to be the case. The communications with the K3 is not synchronized with the attempted communications with the KX3, so a reset (power cycle) of the KPA500 may be required. 73, Don W3FPR On 4/22/2014 7:02 PM, Phil Hystad wrote: Some follow-up questions: OK, I have the KX3 and K3 configured with the KPA500 and KAT500. Everything seems to work with one little exception. The exception: --- initial conditions, K3 is on and switched to use the KPA500 and KAT500. KX3 is off. --- using K3 and so on works fine with amp on or with amp in standby. --- I turn off K3. Leave KPA500 on but in STBY mode. --- Switch coax from K3 to KX3 (1x2 switch). --- Turn on KX3. KPA500 still in STBY mode. --- Attempt to switch KPA500 to OPER from STBY but switch does not work. If I power off the KPA500 (front panel switch) and power back on then switch works fine. I have experimented with all kinds of starting initial conditions and order of events but whenever the KPA500 is left on after using the K3 and then switching to the KX3, the switch on the KPA500 to go from STBY to OPER does not work. I always have to cycle the power from the front panel on/off switch. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] /user/SendEmail.jtp?type=nodenode=7587681i=2 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] /user/SendEmail.jtp?type=nodenode=7587681i=3 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] /user/SendEmail.jtp?type=nodenode=7587681i=4 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] /user/SendEmail.jtp?type=nodenode=7587681i=5 If you reply to this
[Elecraft] How to outfit a K3 for JT65HF or JT9
I'm note sure the title makes any sense. Now I hate to admit this but I've had more contacts in the last two month than in the last ten years using JT65HF. I'm using a FT-1000D with BPF on 20 and 10 meters with a Cushcraft Vertical. I think I bought it when Cushcraft was still in NH. I'm thinking of buying a new base K3/10. I'd prefer to by used but somehow the discounts on the used equipment just aren't there. But I expect for my application all I really need is already there. Maybe a 8 pool roofing filter. Any thoughts ? Larry N2CVS -- View this message in context: http://elecraft.365791.n2.nabble.com/How-to-outfit-a-K3-for-JT65HF-or-JT9-tp7587584.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] How to outfit a K3 for JT65HF or JT9
With a 2.4 KHz filter (not on a K3) I only got partial band coverage on JT65/JT9). Is there any advantage to using a CW filter to look at a eq channels at a time ? Or is it better just to use the DSP to narrow it down ? Larry DGB [via Elecraft] wrote: I have both those filters, 2.7 and 2.8 and am able to crank the width to 4KHz. Also using WSJT-X and am able to adjust/widen the screen to 4KHz for both modes, works great! 73 Dwight NS9I On 4/21/2014 9:52 AM, Joe Subich, W4TV wrote: The only real concern for using the K3 with WSJT-X (JT65 and JT9 simultaneously) is to make sure you get either the FM or AM (13 KHz or 6 KHz) roofing filter so you can widen the RX bandwidth to the full 4.2 KHz. With a 2.7 or 2.8 KHz filter you will be limited to one mode or the other and switching between the two. 73, ... Joe, W4TV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[hidden email] /user/SendEmail.jtp?type=nodenode=7587589i=0 This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to [hidden email] /user/SendEmail.jtp?type=nodenode=7587589i=1 If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/How-to-outfit-a-K3-for-JT65HF-or-JT9-tp7587584p7587589.html To start a new topic under [K3], email ml-node+s365791n365792...@n2.nabble.com To unsubscribe from Elecraft, click here http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=unsubscribe_by_codenode=365791code=bGF3bG9wZXozQGdtYWlsLmNvbXwzNjU3OTF8MjU5MTAzNDE2. NAML http://elecraft.365791.n2.nabble.com/template/NamlServlet.jtp?macro=macro_viewerid=instant_html%21nabble%3Aemail.namlbase=nabble.naml.namespaces.BasicNamespace-nabble.view.web.template.NabbleNamespace-nabble.view.web.template.NodeNamespacebreadcrumbs=notify_subscribers%21nabble%3Aemail.naml-instant_emails%21nabble%3Aemail.naml-send_instant_email%21nabble%3Aemail.naml -- View this message in context: http://elecraft.365791.n2.nabble.com/How-to-outfit-a-K3-for-JT65HF-or-JT9-tp7587584p7587594.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] How to outfit a K3 for JT65HF or JT9
Thanks Joe and Jim: So you need a linear phase filter. Is the DSP filter linear phase ? I'm searching for linear phase filter and ending up finding references in this group !!! Larry, N2CS -- View this message in context: http://elecraft.365791.n2.nabble.com/How-to-outfit-a-K3-for-JT65HF-or-JT9-tp7587584p7587614.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 Message delivered to arch...@mail-archive.com
[Elecraft] What crystal filters for the K3 are linear phase delay (constant group delay) ?
I'm wondering if any digital filters exist for the K3. I'm wondering which common filters work best on the K3. I'm interested in JT65 and JT9 linear phase delay and constant group delay means that the signal of different frequency take the same time to go through the filter so that the waveform is preserved. this is needed to get best results. for narrow filters this is more serious since the group delay changes are at the skirts which are close together. I've haven't been able to find such filter. I've been using the filters on my FT1000D and I do notice the 250 Hz one doesn't seem to help JT65HF as much I would have expected. Any ideas, Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/What-crystal-filters-for-the-K3-are-linear-phase-delay-constant-group-delay-tp7587633.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] How to outfit a K3 for JT65HF or JT9
JT65: http://elecraft.365791.n2.nabble.com/JT65HF-Data-Mode-A-td7513437.html my FT1000D was USB. -- View this message in context: http://elecraft.365791.n2.nabble.com/How-to-outfit-a-K3-for-JT65HF-or-JT9-tp7587584p7587636.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] How to outfit a K3 for JT65HF or JT9
But what about EME. You want a narrow filter and you want constant group delay. I'll research that as a separate topic. Let's close this out. In a pinch the 5 pole filter which comes with the rig is ok. 6K AM, 12K FM are recommended making up selectivity in the DSP. Narrow filters recommended when in filter band signals are producing overload. Narrow filters may degrade digital signals. Signals near the skirts of filters may be degrade digital signals. constant group delay filters are recommended. I haven't found any. Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/How-to-outfit-a-K3-for-JT65HF-or-JT9-tp7587584p7587639.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] What crystal filters for the K3 are linear phase delay (constant group delay) ?
Thank you Jim, I read all your posts. I'll quote your quote of K1JT again here: K1JT says that it is best to run the radio broadband and let the WSJT software provide the needed selectivity in its decoding algorithm. The reason is simple -- phase shift can cause decoding errors, filters in the radio create phase shift. 73, Jim K9YC But what about: very weak signals reducing the bandwidth increases the signal to noise ratio. very strong signals reducing the bandwidth can prevent the DSP chain from desensitizing the receiver and/or saturating the a/d converter. Of course reducing the bandwidth tends to phase shift can cause decoding errors. Which is why I'm asking if there are any constant group delay filters out there. Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/What-crystal-filters-for-the-K3-are-linear-phase-delay-constant-group-delay-tp7587633p7587642.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] What crystal filters for the K3 are linear phase delay (constant group delay) ?
Now with EME this isn't much of a problem I would think. If no strong signals are present then the DSP wold be able to shrink the bandwith just fine. Even though a wide filter lets in a lot of noise the DSP can get rid of it. -- View this message in context: http://elecraft.365791.n2.nabble.com/What-crystal-filters-for-the-K3-are-linear-phase-delay-constant-group-delay-tp7587633p7587643.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] How to outfit a K3 for JT65HF or JT9
Oh my, I finally get it. You don't even need the K3's DSP. Thank you. -- View this message in context: http://elecraft.365791.n2.nabble.com/How-to-outfit-a-K3-for-JT65HF-or-JT9-tp7587584p7587644.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] What crystal filters for the K3 are linear phase delay (constant group delay) ?
This is wrong: Even though a wide filter lets in a lot of noise the DSP can get rid of it. The WSJT software is a DSP. It has it's own filters and the DSP on the K3 is not needed. So the only job of the K3 is to produce a clean wideband signal for the WSJT. You would still have to prevent overload by what ever means. Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/What-crystal-filters-for-the-K3-are-linear-phase-delay-constant-group-delay-tp7587633p7587646.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] What crystal filters for the K3 are linear phase delay (constant group delay) ?
I've already recanted on S/N ratio. I was an idiot. I kept skipping the part where the PC is also a DSP. Sven's post on the other thread also brought my attention to it. The only thing left is strong carriers overloading the receiver. I'll go find WSJT and learn some more. Thanks again Jim. Larry N2CS Joe is well aware of the issue. Hiss answer that the phase distortion issue trumps S/N ratio. You may want to study what he has had to say on the issue. Joe reads the WSJT list. 73, Jim K9YC -- View this message in context: http://elecraft.365791.n2.nabble.com/What-crystal-filters-for-the-K3-are-linear-phase-delay-constant-group-delay-tp7587633p7587649.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 Message delivered to arch...@mail-archive.com
[Elecraft] Wanted K3
I'm wondering if anyone has a K3 that they would like to part with. Tell me what you have and what you want for it. Serial number and condition would be useful. If the price is right. Be sure to factor in that the warranty isn't transferable and that updates are needed. Thank you, Larry Lopez N2CVS New Boston, NH -- View this message in context: http://elecraft.365791.n2.nabble.com/Wanted-K3-tp7587653.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Wanted K3
I might be able to trade a little used FT1000D/4 filters/BPF and original book. But you would really have to twist my arm. -- View this message in context: http://elecraft.365791.n2.nabble.com/Wanted-K3-tp7587653p7587654.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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 Wanted at a bargain price.
I suppose an old base K3 in an opened box for good discount would do. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Wanted-at-a-bargain-price-tp7587340.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 - ATU Disabled Problem
I have no KX3, nor do I walk on water. I just googled d = 000, ERR TxC, ERR TXS: Out popped a reference to the KX3 Users Manual: I searched the KX3 Users Manual manual says: ERR TXC, ERR TXS: Transmit attempt without first calibrating TX BIAS in CW (TXC) or SSB (TXS) mode Perform Transmit Bias calibration (pg. 33). This is a fully-automated procedure that requires no test equipment I would go to pg. 33 of the KX3 users Manual and Perform and read the transmit Bias calibration. I then search this list for transmit Bias calibration. That was interesting. Quite a few posts. I have no clue what is wrong. -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-ATU-Disabled-Problem-tp7586823p7586827.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 - ATU Disabled Problem
I wonder if this might be the problem !!! There is a very interesting post with the title: KX3 production firmware update, rev 0.97 -- very important bug fix, better CW QSK, etc. KX3 production firmware rev 0.97 (with DSP rev 0.84) is now available. It corrects a problem in the power-on/off sequence that could inadvertenly modify EEPROM locations (that is, operating parameters). It has other significant improvements as well. See recent release notes below. ... * EEPROM DATA INTEGRITY IMPROVED: Previously, in rare cases one or more EEPROM locations could be modified during power-on/off cycling. Symptoms included “ERR TXC” or “ERR TXS” messages, AGC turned off, etc. -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-ATU-Disabled-Problem-tp7586823p7586828.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 Message delivered to arch...@mail-archive.com
[Elecraft] K3 line in, line out transformers.
The K3 has isolation transformers for the line input (mono), and line output L and line output R (stereo). There are 3 sets of 2 transformers. In each set, the circuit diagrams shows the transformers in parallel with opposed phase. Please see the K3 Circuit diagram KIO3 Main Sheet 2, top left quadrant. one of each pair is labeled TTC-108 600 ohm line transformer 1.5 KV isolation, the other of each pair is labeled LM-NP-1001 600 ohm line transformer, 6.5 KV isolation. I'm going to take a stab at explaining this. I bet only one transformer or the pair is actually used. -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-line-in-line-out-transformers-tp7586831.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] IF out to kx3 as panadapter for K3
The transverter IF out from the K3 is a transmit signal. If you connected KX3 to the K3 transverter output then the K3 would be transmitting into the KX3. I wouldn't do that. If you connected the KX3 to the K3 IF output the KX3 would be transmitting into the K3 IF output. I wouldn't do that. You would probably need an attenuator to reduce the strength of the K3 IF output so that the KX3's front end didn't overload. Enough attenuation might prevent the K3 IF output from being damaged. I still wouldn't do this. -- View this message in context: http://elecraft.365791.n2.nabble.com/IF-out-to-kx3-as-panadapter-for-K3-tp7582627p7586832.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Fw: Anti Static Mats
They made me take an ESD course at work and well I have a few comments I feel forced to make. Forgive me. static mats are poor conductors which allow the charge to equalize slowly. Humans, in fact are not poor conductors. So the only purpose of the wrist strap is to keep you at the same potential as everything else. But picking up a static sensitive device is not safe. You are a good conductor. You have much capacity. Picking up a static sensitive device in a static bag is ok, placing this on a static matt is ok. After a bit you the bag and the static mat are at the same potential so you can open the bag. The only reason you have a large value resistor on a wrist strap is so you don't get electrocuted So when you take a static sensitive device and put it on a metal conductor (PC board) you might have a fast enough discharge to fry the board. This subject goes on forever and some of it is counter intuitive. When you have a discharge you might have failures months or years later. It may be damaged and it may work fine. For a while. I hate mentioning all of this but this is what they taught us. Larry again forgive me. -- View this message in context: http://elecraft.365791.n2.nabble.com/Fw-Anti-Static-Mats-tp7586729p7586732.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 Message delivered to arch...@mail-archive.com
[Elecraft] Why is KX3 phase noise so much less than the K3 ?
http://www.sherweng.com/table.html The LO Noise (dBc/Hz): 144 KX3 138 K3 130 R390A 121 FT-1000D 117 ICOM 720A I'm wondering why the KX3 Lo noise is so much better than the K3. The R390A value strange since the first local oscillator is a quartz crystal. I've owned a Icom 720A and own a FT-1000D. Ive never owned a K3, KX3 or a R390A. Larry -- View this message in context: http://elecraft.365791.n2.nabble.com/Why-is-KX3-phase-noise-so-much-less-than-the-K3-tp7586369.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Why is KX3 phase noise so much less than the K3 ?
I'll try to summarize: lo phase noise is good: it reduces unintended radiation from transmitters. it reduces reciprocal mixing on receiving. surveys during contests are very revealing. The KX3 and K3 have similar very low amounts of phase noise. Unless I want to make a career of it I should stop at this point. Nothing is perfect. thank you very much everyone. larry lopez N2CVS -- View this message in context: http://elecraft.365791.n2.nabble.com/Why-is-KX3-phase-noise-so-much-less-than-the-K3-tp7586369p7586419.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 Message delivered to arch...@mail-archive.com
