[Elecraft] Can the K2, the WinKey keyer and Writelog Play together?
Having become totally frustrated with the N1MM contest logger, I thought I'd give Writelog a try. I have just purchased and installed Writelog and I don't have the foggiest notion as to how to get it going. My configuration is an Elecraft K2 controlled via COM 1 and the K1EL WinKey keyer via a USB port that is designated as COM4. I know that the Winkey is set up right because I can get it to key using the WK test program. My problem is that if I go to the setup menu for writelog and tell it I have a K2 on comm port 1 and that I have the K1EL keyer, when I push the OK button it says I cannot use this keyer and radio on comm ports. I see nothing in the Help that shows me how to set up the K2 and Winkey and to actually get Writelog to key the keyer. Does anyone know how to get this going? 73, Steve Kercel AA4AK __ 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 Utility v 1.3.10.15 error
I just downloaded the K3 Utility and on the terminal tab it just keeps repeating TB000;TB000;TB000; over and over till it fills the screen. I did not have this problem before d/l the latest version. 73 Scott -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Utility-v-1-3-10-15-error-tp5667321p5667321.html Sent from the [K3] 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] panadapter for K2
I am looking for recommendations for adding a panadapter to my K2. __ 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] panadapter for K2
http://cliftonlaboratories.com/using_softrock_as_a_panadapter_for_the_k2.htm GB 73 K5OAI Sam Morgan On 10/24/2010 6:02 AM, jcaruthers wrote: I am looking for recommendations for adding a panadapter to my K2. __ 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 Utility v 1.3.10.15 error
Go to View, and turn off Trace. 73, John On 10/24/2010 6:43 AM, N1IRB wrote: I just downloaded the K3 Utility and on the terminal tab it just keeps repeating TB000;TB000;TB000; over and over till it fills the screen. I did not have this problem before d/l the latest version. 73 Scott __ 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] Build or Service your Elecraft ?
Hello, Have you always wanted an Elecraft? A KX1, K1, K2, K3, whatever? I build them all! See what my clients have said about my construction and service work at http://www.eham.net/reviews/detail/6768 I also build and service all the QRP radios from Small Wonder Labs. See feedback http://www.eham.net/reviews/detail/8841 Visit my website at http://WilcoxEngineering.com for more details, including photos of some of my projects. Cheers, Alan Alan D. Wilcox, W3DVX (K2-5373, K3-40) 570-321-1516 Williamsport, PA 17701 __ 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 what the heck is this?
Bill, One possibility is that this rogue signal's frequency is not actually at 28.002 MHz, but at some other frequency which coincides with one of the K3 receiver's spurious responses when the K3 is tuned to 28.002 MHz. An example of one spurious response is the so-called image, which in the case of a K3 receiver tuned to 28.002 MHz would be at 44.432 MHz. Typical Superhets have many other spurious responses above, below and sometimes in the band being tuned. Because you also hear this signal at 28.002 MHz when using another battery powered rig, at first glance my thought that the signal is not at 28.002 MHz would seem to be nonsense because the frequency used in the IF of your battery powered rig and the K3 are probably not the same, therefore the spurious response pattern in terms of frequencies of the two receivers would not be the same. But there is the possibility that some responses might in part cover the same frequencies. If I can be of any help, please contact me off-list. 73, Geoff GM4ESD Bill Hammond wrote on Saturday, October 23, 2010 at 18:40 + 0100: It has been there for years, but isn't really a problem until someone happens to be on that frequency and you want to talk to them. Like this morning when FO8RZ was working up 1 from 28.002 and with the receiver set on 28.003 I had the pleasure of listening to this repetitive tone until I worked him :) So what the heck is it?? Obviously local, it is always there and never misses a beat. I have pulled the big switch and listening with a battery powered rig, it is still there. I assume some consumer product uses 10 meters for some unknown purpose...ever encounter this Elecrafters? __ 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: K2 #6996 is dead - please help!
Hi All, K2 #6998 has had a short life. Working perfectly with KSB2/KDSP2/KNB2 all installed until tonight. I decided to tweak one of the BFO settings, connected the frequency counter to the control board and was about to connect it to the BFO test point on the RF board, when I dropped the tip into the vicinity of Q6/Q7 - can't say exactly where it landed, but I heard a click and the K2 went dead. I waited a few minutes and powered up again, thinking the resetting fuse might have tripped. Now the K2 starts, the Elecraft initialisation appears, the frequency readout appears, and by this time (3 seconds or so) the self-resetting fuse gets hot and the K2 shuts down. I guess I have a short. No visible evidence of where - I took the K2 apart to look. Resistance tests on the front board and control boards are all OK. Resistance tests on the RF board are no longer normal: Q7 base resistance to ground = 538ohm (ref 2.5 - 3.0kohm) Q7 collector resistance to ground = 400ohm ( ref 500ohm) Other measurements: Q6 base resistance to ground = 119 ohm, collector 475 ohm, emitter short to ground Q8 base resistance to ground = 538ohm, collector 473 ohm, emitter short to ground. I'd be grateful for any advice how to proceed from here. This is in the category of bad things to happen! And the KPA100 is nearly finished :( Thanks and 73, John VK7JB This email was sent from Netspace Webmail: http://www.netspace.net.au __ 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] Can the K2, the WinKey keyer and Writelog Play together?
Have you tried the Writelog reflector? Jim K4JAF - Original Message - From: Stephen W. Kercel kerc...@suscom-maine.net To: elecraft@mailman.qth.net Sent: Sunday, October 24, 2010 12:59 AM Subject: [Elecraft] Can the K2, the WinKey keyer and Writelog Play together? Having become totally frustrated with the N1MM contest logger, I thought I'd give Writelog a try. I have just purchased and installed Writelog and I don't have the foggiest notion as to how to get it going. My configuration is an Elecraft K2 controlled via COM 1 and the K1EL WinKey keyer via a USB port that is designated as COM4. I know that the Winkey is set up right because I can get it to key using the WK test program. My problem is that if I go to the setup menu for writelog and tell it I have a K2 on comm port 1 and that I have the K1EL keyer, when I push the OK button it says I cannot use this keyer and radio on comm ports. I see nothing in the Help that shows me how to set up the K2 and Winkey and to actually get Writelog to key the keyer. Does anyone know how to get this going? 73, Steve Kercel AA4AK __ 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] Can the K2, the WinKey keyer and Writelog Play together?
Jim: I've posted the message on both lists. 73, Steve AA4AK Jim Cox wrote: Have you tried the Writelog reflector? Jim K4JAF - Original Message - From: Stephen W. Kercel kerc...@suscom-maine.net To: elecraft@mailman.qth.net Sent: Sunday, October 24, 2010 12:59 AM Subject: [Elecraft] Can the K2, the WinKey keyer and Writelog Play together? Having become totally frustrated with the N1MM contest logger, I thought I'd give Writelog a try. I have just purchased and installed Writelog and I don't have the foggiest notion as to how to get it going. My configuration is an Elecraft K2 controlled via COM 1 and the K1EL WinKey keyer via a USB port that is designated as COM4. I know that the Winkey is set up right because I can get it to key using the WK test program. My problem is that if I go to the setup menu for writelog and tell it I have a K2 on comm port 1 and that I have the K1EL keyer, when I push the OK button it says I cannot use this keyer and radio on comm ports. I see nothing in the Help that shows me how to set up the K2 and Winkey and to actually get Writelog to key the keyer. Does anyone know how to get this going? 73, Steve Kercel AA4AK __ 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] K3 Utility v 1.3.10.15 error
Terminal Page Red text is diagnostic trace info. Turn off Trace with the View Menu Trace check menu item. I have updated K3 Utility Help in a pending version to describe trace. Firmware load with Trace on takes a whole lot linger than without trace 73 de Dick, K6KR Sent from my iPhone On Oct 24, 2010, at 3:43, N1IRB n1...@cox.net wrote: I just downloaded the K3 Utility and on the terminal tab it just keeps repeating TB000;TB000;TB000; over and over till it fills the screen. I did not have this problem before d/l the latest version. 73 Scott -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Utility-v-1-3-10-15-error-tp5667321p5667321.html Sent from the [K3] 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] K2: K2 #6996 is dead - please help!
John, I suspect you created a base to emitter short on Q7 - it only takes a millisecond or so for the transistor to be destroyed. You can remove T3 which takes the +12 volts off the Q7/Q8 transistors and see if everything else is normal (of course, there will be no RF output). If removing T3 fixes most everything, order the K2PAKIT from Elecraft. 73, Don W3FPR On 10/24/2010 9:08 AM, zen...@netspace.net.au wrote: Hi All, K2 #6998 has had a short life. Working perfectly with KSB2/KDSP2/KNB2 all installed until tonight. I decided to tweak one of the BFO settings, connected the frequency counter to the control board and was about to connect it to the BFO test point on the RF board, when I dropped the tip into the vicinity of Q6/Q7 - can't say exactly where it landed, but I heard a click and the K2 went dead. I waited a few minutes and powered up again, thinking the resetting fuse might have tripped. Now the K2 starts, the Elecraft initialisation appears, the frequency readout appears, and by this time (3 seconds or so) the self-resetting fuse gets hot and the K2 shuts down. I guess I have a short. No visible evidence of where - I took the K2 apart to look. Resistance tests on the front board and control boards are all OK. Resistance tests on the RF board are no longer normal: Q7 base resistance to ground = 538ohm (ref 2.5 - 3.0kohm) Q7 collector resistance to ground = 400ohm ( ref 500ohm) Other measurements: Q6 base resistance to ground = 119 ohm, collector 475 ohm, emitter short to ground Q8 base resistance to ground = 538ohm, collector 473 ohm, emitter short to ground. I'd be grateful for any advice how to proceed from here. This is in the category of bad things to happen! And the KPA100 is nearly finished :( Thanks and 73, John VK7JB This email was sent from Netspace Webmail: http://www.netspace.net.au __ 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] XV144 - sold
Hello Group, I am waiting funds for the XV144. Therefore, please consider this transverter was sold. Thanks, 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
Re: [Elecraft] 2.8kHz roofing filter
Given the fact that the filter passband shapes aren't absolutely flat, as Bill W4ZV pointed out, you can't expect PERFECT balance between the sidebands. But you CAN tweak a lot of this audible difference out by adjusting the filter offset using the K3 Utility, as has been stated earlier. Even the 8-pole filters can show some required offset in any specific K3. And the specified offset for a 5-pole filter can benefit from a little tweaking, depending on which K3 you put it in. I have a 400 Hz 8-pole, a 1.8 kHz 8-pole, and a 2.7 kHz 5-pole. Of the three, only the 1.8 kHz came out pretty close to where it was supposed to be (only -0.01 kHz offset applied made the sidebands sound pretty much the same). The 400 Hz CW filter required an offset of -0.11 kHz to make CW and CW-R sound the same, and the 2.7 kHz 5-pole filter, which was marked with an offset of -0.90 kHz, actually showed a better audible center with an offset of -1.09 kHz in my particular radio. An earlier poster on this (or a related) thread explained how to do this without test equipment, using just the K3 Utility, the antenna noise floor, and your ears. You can search for that post in the archives. Now, in tweaking the offsets using this by-ear method, it's entirely possible that you're actually shifting the filter a little past center to compensate for the filter's unflat shape. I can see an argument that this is not a good thing to do, as well as an argument that it is a fine thing to do. :-) I'm of the latter persuasion, at least at the moment, notwithstanding any future arguments to the contrary. Bill W5WVO -Original Message- From: Bill W4ZV Sent: Saturday, October 23, 2010 20:51 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] 2.8kHz roofing filter ab2tc wrote: In USB there is a definite upward tilt of the passband and the opposite for LSB. This is quite audible. Is this normal and is there anything I can do about it (other than asking Elecraft to add by mode equalizer)? Probably nothing you can do other than tweaking EQ per mode. It's caused by the filter having an actual amplitude tilt in its passband. In USB the upward tilt is on the upper side and in LSB it's on the lower side. I don't think you would notice the small 8-pole offset (typically 50 Hz) in a 2.8k filter, but they are more noticeable in CW filters. 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/2-8kHz-roofing-filter-tp5665995p5666368.html Sent from the [K3] 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] K3 for sale
I love watching these K3 for sale threads, to see how fast they go. This one, about 3.75 hours, which I don't think is a record, but pretty good. LOL Bill W5WVO -Original Message- From: Jim Wilson Sent: Sunday, October 24, 2010 04:11 To: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 for sale Thanks guys, radio has been sold--appreciate all the responses. Jim __ 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 what the heck is this?
If one has a battery K2, or can otherwise set up mobile then something like this can be quickly identified as ground or sky wave. Using a rubber duckie from 2 meters on the K2 input makes it weak enough to determine if driving around weakens it or strengthens it. If it is the same on signal peaks over a large driving area then it's sky wave and is distant. However, I suspect this will be LOCAL to you, if for no other reason it is not widely reported, and you seem to hear it WITH or WITHOUT propagation to bring it in. With a sufficiently poor antenna, or an inline step attenuator, you should be able to drive around and get it to a block. I bring up the K2 with ducky, because once you have it to a small area, you can hold the K2 tight to your chest, and in back of you will be attenuated much more than in front of you, and you can DF, even with this blunt of an instrument (done this myself many times successfully). You may find when you get close that you need to remove the antenna to continue DFing. This could be something related to CB gear converted to ten meters, or from the CPU in a washing machine, or any number of strange sources reported these days. I'm not nearly so inclined to automatically relegate every imaginable observation to some weakness in the K3 as some reflector residents. 73, Guy. On Sun, Oct 24, 2010 at 8:52 AM, Geoffrey Mackenzie-Kennedy gm4...@btinternet.com wrote: Bill, One possibility is that this rogue signal's frequency is not actually at 28.002 MHz, but at some other frequency which coincides with one of the K3 receiver's spurious responses when the K3 is tuned to 28.002 MHz. An example of one spurious response is the so-called image, which in the case of a K3 receiver tuned to 28.002 MHz would be at 44.432 MHz. Typical Superhets have many other spurious responses above, below and sometimes in the band being tuned. Because you also hear this signal at 28.002 MHz when using another battery powered rig, at first glance my thought that the signal is not at 28.002 MHz would seem to be nonsense because the frequency used in the IF of your battery powered rig and the K3 are probably not the same, therefore the spurious response pattern in terms of frequencies of the two receivers would not be the same. But there is the possibility that some responses might in part cover the same frequencies. If I can be of any help, please contact me off-list. 73, Geoff GM4ESD Bill Hammond wrote on Saturday, October 23, 2010 at 18:40 + 0100: It has been there for years, but isn't really a problem until someone happens to be on that frequency and you want to talk to them. Like this morning when FO8RZ was working up 1 from 28.002 and with the receiver set on 28.003 I had the pleasure of listening to this repetitive tone until I worked him :) So what the heck is it?? Obviously local, it is always there and never misses a beat. I have pulled the big switch and listening with a battery powered rig, it is still there. I assume some consumer product uses 10 meters for some unknown purpose...ever encounter this Elecrafters? __ 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 what the heck is this?
I hear it here (Colorado) at about -125 dbm on a vertical. 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] APF For K3
I used APF in the past on CW contacts when needed. This feature seems to have been lost on some of todays modern radios. Because I haven't pounded the brass as much as I used to, I had forgotten about this wonderful APF feature. Those of us who have used it on CW know how really great this feature is. Weak CW signals that are unreadable are enhanced with APF making some QRP contacts possible that otherwise wouldn't be heard. Wayne has said he is putting this feature on the K3 list. I am thrilled that Elecraft is considering this feature. I am looking forward to having APF on my K3s. Roy Morris W4WFB __ 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] APF For K3
guess I will be brave, step up, assume the dummy position, and ask the obvious question what the heck is APF Animal Protective Foundation Advanced Protection Formula American Pain Foundation pick one: http://acronyms.thefreedictionary.com/APF signed clueless GB 73 K5OAI Sam Morgan On 10/24/2010 10:43 AM, Roy Morris wrote: I used APF in the past on CW contacts when needed. This feature seems to have been lost on some of todays modern radios. Because I haven't pounded the brass as much as I used to, I had forgotten about this wonderful APF feature. Those of us who have used it on CW know how really great this feature is. Weak CW signals that are unreadable are enhanced with APF making some QRP contacts possible that otherwise wouldn't be heard. Wayne has said he is putting this feature on the K3 list. I am thrilled that Elecraft is considering this feature. I am looking forward to having APF on my K3s. Roy Morris W4WFB __ 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] APF For K3
Audio peak Filter -Bruce N1RX __ 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] APF For K3
isn't that kind of what the CWT or any cw decoding software does when decoding? GB 73 K5OAI Sam Morgan On 10/24/2010 11:04 AM, Bruce Beford wrote: Audio peak Filter -Bruce N1RX __ 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] 2.8kHz roofing filter
On 10/24/2010 9:58 AM, Bill VanAlstyne W5WVO wrote: Now, in tweaking the offsets using this by-ear method, it's entirely possible that you're actually shifting the filter a little past center to compensate for the filter's unflat shape. I can see an argument that this is not a good thing to do, as well as an argument that it is a fine thing to do. :-) I'm of the latter persuasion, at least at the moment, notwithstanding any future arguments to the contrary. Bill, I'll take the contrary position - at least with respect to narrow filters. 1) when I last checked the K3 firmware placed the edge of the CW filter to cut off low frequency audio response around 100 Hz and eliminate the audio image the other side of the BFO. That means any tweaking by ear is likely to be inaccurate because the user is not directly controlling the offset. 2) When tweaking the offset by ear on CW there can be substantial errors in the true center frequency which will substantially effect performance on RTTY. I measure the center frequencies of CW filters in the radio by disabling the other filters, clearing any RX EQ, turn off AGC, set the CW pitch to 800 Hz and DSP bandwidth to 2800 Hz. Then I look for the -6dB points using an XG-2 and the dBV capability of the K3. With wider filters one would need to measure them in DATA A mode with FC=2.00 and BW=4.00 to minimize DSP effects on the measurement. I am rather disappointed with the consistency of the Elecraft/INRAD 400 Hz, 8-pole filters. I've measured four of them in my rigs and the center frequency is all over the map. The measured deviations are: -15 Hz, +24 Hz, +45 Hz and +55 Hz. +45 and +55 Hz is getting close to the point that it can negatively impact RTTY. I plan to move the filters to put the -15/+24 filters in one rig (with 0.00 KHz offset) and the +45/+55 filters in the other with a -0.05 KHz offset. 73, ... Joe, W4TV On 10/24/2010 9:58 AM, Bill VanAlstyne W5WVO wrote: Given the fact that the filter passband shapes aren't absolutely flat, as Bill W4ZV pointed out, you can't expect PERFECT balance between the sidebands. But you CAN tweak a lot of this audible difference out by adjusting the filter offset using the K3 Utility, as has been stated earlier. Even the 8-pole filters can show some required offset in any specific K3. And the specified offset for a 5-pole filter can benefit from a little tweaking, depending on which K3 you put it in. I have a 400 Hz 8-pole, a 1.8 kHz 8-pole, and a 2.7 kHz 5-pole. Of the three, only the 1.8 kHz came out pretty close to where it was supposed to be (only -0.01 kHz offset applied made the sidebands sound pretty much the same). The 400 Hz CW filter required an offset of -0.11 kHz to make CW and CW-R sound the same, and the 2.7 kHz 5-pole filter, which was marked with an offset of -0.90 kHz, actually showed a better audible center with an offset of -1.09 kHz in my particular radio. An earlier poster on this (or a related) thread explained how to do this without test equipment, using just the K3 Utility, the antenna noise floor, and your ears. You can search for that post in the archives. Now, in tweaking the offsets using this by-ear method, it's entirely possible that you're actually shifting the filter a little past center to compensate for the filter's unflat shape. I can see an argument that this is not a good thing to do, as well as an argument that it is a fine thing to do. :-) I'm of the latter persuasion, at least at the moment, notwithstanding any future arguments to the contrary. Bill W5WVO -Original Message- From: Bill W4ZV Sent: Saturday, October 23, 2010 20:51 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] 2.8kHz roofing filter ab2tc wrote: In USB there is a definite upward tilt of the passband and the opposite for LSB. This is quite audible. Is this normal and is there anything I can do about it (other than asking Elecraft to add by mode equalizer)? Probably nothing you can do other than tweaking EQ per mode. It's caused by the filter having an actual amplitude tilt in its passband. In USB the upward tilt is on the upper side and in LSB it's on the lower side. I don't think you would notice the small 8-pole offset (typically 50 Hz) in a 2.8k filter, but they are more noticeable in CW filters. 73, Bill __ 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] APF For K3
According to Icom (who has it on some of their rigs): The APF changes the audio frequency response by boosting a particular frequency to enhance a desired CW signal... The peak frequency can be adjusted So this is an adjustable frequency audio filter such as we've used for the past 3/4 century. As Doug, KR2Q, noted, the K3 is capable of a 50 Hz bandpass. That's about as narrow as a CW signal being keyed at 20 or 30 wpm can be fit into. Narrower will attenuate the CW sidebands so the dots and dashes start slurring together. I've used an audio filter many times and found them of very limited value to me if the receiver has a decent I.F. bandpass characteristic. That said, if it it's reasonable to implement, people want it, and it can be switched out, I'm all for it. Ron AC7AC __ 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] APF For K3
This may be a reasonable representation of the concept ? http://www.ab4oj.com/icom/ic7600/apf.html ~Iain / N6ML On Sun, Oct 24, 2010 at 4:55 PM, Ron D'Eau Claire r...@cobi.biz wrote: According to Icom (who has it on some of their rigs): The APF changes the audio frequency response by boosting a particular frequency to enhance a desired CW signal... The peak frequency can be adjusted So this is an adjustable frequency audio filter such as we've used for the past 3/4 century. As Doug, KR2Q, noted, the K3 is capable of a 50 Hz bandpass. That's about as narrow as a CW signal being keyed at 20 or 30 wpm can be fit into. Narrower will attenuate the CW sidebands so the dots and dashes start slurring together. I've used an audio filter many times and found them of very limited value to me if the receiver has a decent I.F. bandpass characteristic. That said, if it it's reasonable to implement, people want it, and it can be switched out, I'm all for it. Ron AC7AC __ 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] APF For K3
Sam wrote: isn't that kind of what the CWT or any cw decoding software does when decoding? GB 73 K5OAI Sam Morgan Not exactly. My understanding is that an audio peaking filter actually boosts or accentuates the audio at a particular frequency, rather than attenuating those at other frequencies. It's function is to enhance one thing, rather than reduce other things. It's all in the semantics, I suppose... 73, Bruce N1RX __ 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] APF For K3
Seems to me that adjusting the Pitch to one that most comfortably stands out from others and then using Spot ought to accomplish the same thing. No? -- 73, Dick KA1OZ Middleborough, MA Radio: Elecraft K3/100(Kit) SN 859 Antenna: Titan-DX Bruce Beford wrote: Sam wrote: isn't that kind of what the CWT or any cw decoding software does when decoding? GB 73 K5OAI Sam Morgan Not exactly. My understanding is that an audio peaking filter actually boosts or accentuates the audio at a particular frequency, rather than attenuating those at other frequencies. It's function is to enhance one thing, rather than reduce other things. It's all in the semantics, I suppose... 73, Bruce N1RX __ 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] APF For K3
Apparently not. Some with experience with other radio's implementation of an APF function say that the currently available filtration offerings on the K3 are not equivalent. As the link recently posted for Adam Farson's page on the Icom APF shows, an APF can roll off the adjacent frequencies, rather than having a flat pass-band, at whatever width. Like all audio enhancement, it's a rather subjective thing. Bruce, N1RX (Not an avid APF cheerleader, but I -do- like having many filtering options). -Original Message- From: Dick Roth, KA1OZ [mailto:raro...@comcast.net] Sent: Sunday, October 24, 2010 1:45 PM To: Bruce Beford Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] APF For K3 Seems to me that adjusting the Pitch to one that most comfortably stands out from others and then using Spot ought to accomplish the same thing. No? -- 73, Dick KA1OZ Middleborough, MA __ 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] APF For K3
I have found that using the receive EQ for this works quite nicely. I raise the frequency matching that of my side-tone and attenuate all others. The K3 will automatically switch to this EQ setting when you enable the CW mode and switch to the SSB setting when that mode is enabled. Good luck, Mike N8XPQ -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-For-K3-tp5667924p5668278.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
Re: [Elecraft] APF For K3
No, actually not. The MP has something like APF, without calling it that. On CW if you turn on EDSP and set contour to 11 oclock and set NR to D and then set spot to 450, what you will get is a rounded AF response. This works well running (as opposed to search and pounce) in a contest, when you want to hear up and down a ways to catch the off-frequency callers (seemingly about 25% of world population, equals entirely common, typical tone-deaf to some degree), but don't want the entire bandwidth of noise roaring in your ear. At this point, I have no means of duplicating that in the K3. This is NOT the same as running narrower bandwidth. If I narrow bandwidth, then I don't hear the off-frequency callers, some of which are closer to the up or down stations than me. Throwing away up and down callers easily throws away 10% of run QSO's depending on how tight you have to squeeze. This is why I have the 250 roofing filter defined as 350 with the 400 defined as 450. I will run at 450 if I can get away with it. When it gets crowded, 350 running is really as tight as I want to go, just so I can hear off-frequency callers. I just need to hear them well enough to get them in with shift or RIT. 450 with APF is having your cake and eating it too. For that matter, if Wayne sees this, a fixed to center mild NR-generated APF that came out like the MP version but with an automatic band-pass following center might be a big hit. Try the above with an MP some time and see if you can mimmick that in K3 firmware. Once discovered, it was always a favorite. That's where I got stuck on 450 Hz as a center frequency. Just got used to it. I don't hate my MP. I just wish to H* that it had a K3 style uncrushable RF IF string. Yes, APF, and sooner than later, and with a scalar adjustment to how deep it goes and the width. 73, Guy. On Sun, Oct 24, 2010 at 1:45 PM, Dick Roth, KA1OZ raro...@comcast.net wrote: Seems to me that adjusting the Pitch to one that most comfortably stands out from others and then using Spot ought to accomplish the same thing. No? -- 73, Dick KA1OZ Middleborough, MA Radio: Elecraft K3/100(Kit) SN 859 Antenna: Titan-DX Bruce Beford wrote: Sam wrote: isn't that kind of what the CWT or any cw decoding software does when decoding? GB 73 K5OAI Sam Morgan Not exactly. My understanding is that an audio peaking filter actually boosts or accentuates the audio at a particular frequency, rather than attenuating those at other frequencies. It's function is to enhance one thing, rather than reduce other things. It's all in the semantics, I suppose... 73, Bruce N1RX __ 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] K3 Sub RF gain
Joe (W4TV) Yes I have performed the gain calibration many times on both receivers using the K3 Utility with the XG2. I recently did it after loading the new K3 Utility that supposedly fixed some issue about writing receiver gains to memory. So now you make two people whose RF gain tracks. I can't begin to speculate anymore as to the difference in RF gain behavior in the two receivers. So to repeat: same antenna (to XG2), same stock filters with matched offset, same (0) filter gain, same ATT on, same PRE off, same IF filter width, same NB off, same NR off. Sub Rx gain set to minimum I can still copy signals and hear band noise, Main Rx RF gain set to minimum is dead band. This difference in RF-gain tracking makes it difficult to use reduction in RF gain as a method to manage high band noise conditions. I can't just grab both controls and move them the same, like I can with AF controls which track very well. Stan KR7R Main Rx RF gain behavior is bizarre. In the days of old potentiometers this would be explainable but not with gain controlled by firmware. Maybe a bad RF gain control with odd switch bounce behavior at some gain setting... I would try to move the RF gain knob while K3 is shut down to a new position and then turn it back on to see if the RF gain nonlinearity location changed to someplace other than 9 o'clock. AE6WA Mike Scott Tarzana, CA Joe W4TV said. Both of mine operate as expected (same RF/AF gain response for main and KRX3). Have you performed the RF Gain calibration on both of the receivers using a calibrated 50 uV signal source (e.g., XG-2)? __ 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] Thought for possible feature - Do you want to update this setting Y/N?[END of thread]
Let's end this thread. In general, we ask that people do not keep posting pro or con votes on a thread as it tends to seriously increase the noise level on the reflector. 73, Eric Elecraft list modulator www.elecraft.com _..._ On Oct 23, 2010, at 6:01 PM, George Jan georgeand...@windstream.net wrote: No! George AI4VZ -Original Message- How about a Do you want to update this setting Y/N? option? Barry W2UP __ __ 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] APF For K3
The only radio I found APF extremely useful was my FT1000D. It could pull essentially inaudible signals out of the noise on 80 and 160. I believe Yaesu modified and broke the APF in later 1000D's, and there was a mod to resurrect it. I found the APF in my Icom 7800 worthless. IMO, implemented the right way, as in the early 1000D's, it would be a useful feature. Barry W2UP -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-For-K3-tp5667924p5668346.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
Re: [Elecraft] APF For K3
I found the APF in my Icom 7800 worthless. Same here. Icom's implementation of APF in the '7700/'7800 is really an Audio Passband Filter with low Q. It's really no different than narrowing a DSP passband filter. What's unique about the FT-1000D's APF is that the Q is very high, although its affected with APF tuning. The high Q of the circuit forms a very narrow filter with fixed gain, and variable peaking frequency. Paul, W9AC __ 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] APF For K3
I found the AF Tune peaking function in the old Kenwood TS930 to be quite useful. Is that similar to the desired implementation or was it something different? 73, Bob K2TK On 10/24/2010 2:47 PM, Paul Christensen wrote: I found the APF in my Icom 7800 worthless. Same here. Icom's implementation of APF in the '7700/'7800 is really an Audio Passband Filter with low Q. It's really no different than narrowing a DSP passband filter. What's unique about the FT-1000D's APF is that the Q is very high, although its affected with APF tuning. The high Q of the circuit forms a very narrow filter with fixed gain, and variable peaking frequency. Paul, W9AC __ 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] APF For K3
Shortly after the K3 appeared on the scene three years ago, those of us who had gotten used to (and enamored of) the APF in the FT-1000D lobbied for such a circuit in the K3. As I understand it, the Yaesu SCAF circuit was studied, but nothing ever came of it. Software-defined radios are radically different from analog ones, as we all know. Every once in a while I'll fire up the 1000D and appreciate all over again the effectiveness of its APF. 73, Kent K9ZTV __ 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] APF For K3
I have never used a receiver with a button labeled APF, but I have used my K2 with an audio filter. It seems to me the only other characteristic of APF is that the center frequency can be changed. On the K3, we have the Dual Passband that may work in a similar manner. Set the width to the lowest value 50 Hz and turn on Dual PB and you have a wide filter with a peak at your sidetone pitch. You can change the Pitch if you wish to peak a different audio frequency, but for the life of me, I cannot imagine why anyone would want to peak any pitch other than his preferred sidetone pitch. If you want a little more peaking, turn on NR and set it to an aggressive setting. The way NR works is that it builds a narrow filter around a signal that it thinks is a valid signal - so you have a filter at the audio pitch where you have set the VFO. Yes, the K3 is different than those receiver that have APF, but in my opinion, it accomplishes the same thing, but differently. 73, Don W3FPR On 10/24/2010 2:47 PM, Paul Christensen wrote: I found the APF in my Icom 7800 worthless. Same here. Icom's implementation of APF in the '7700/'7800 is really an Audio Passband Filter with low Q. It's really no different than narrowing a DSP passband filter. What's unique about the FT-1000D's APF is that the Q is very high, although its affected with APF tuning. The high Q of the circuit forms a very narrow filter with fixed gain, and variable peaking frequency. Paul, W9AC __ 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 Sub RF gain
I assume that you are always making this test after hitting AB two times in quick succession. Listening to daytime 160m noise I set both RF gains to max and adjust the AF to get equal irritation levels in both speakers, I get the same 11 oclock for both RX. If I then come up from RF min to where I just barely hear the noise equally in both, I get an identical 1 oclock setting for both. But remembering that this ain't your daddy's analog radio... The RF gain calibration is only made from the MCU to the output. It determines what internal number results in what gain. It has no means currently to test the RF gain pots themselves because it does not ask you to provide full CW and full CCW as part of the calibrate. The RF gain pots are doing a linear divide on an accurate 5 volts which then goes to ADC pins on the MCU to convert to numeric advice. If the pot itself was not linear, then the numbers advising position would likewise be biased. Currently they are not running a test for linearity of the pots themselves -- it is presumed they are linear, min produces a zero numerical advice, max produces a 255 or some equivalent to that. There could be a missing SMD solder joint keeping the divide from happening properly. If the top of the resistor surface was connected and the wipe was connected, and the bottom of the resistor surface was NOT connected, this could result in that behavior, because you could never get to zero, just to pot max in series with what ever sink resistance in the ADC circuit in the MCU chip. It would have to be the ground connection on VR2REAR that was bad. If you can get at it somehow, you should be able to see the resistance on the wipe go down from 5 volts to zero if it's good. If it's not the pot... It could be that the VR2REAR ADC pin on the MCU has a bad embedded ADC connected to it. Can only fix that with a new board. This control sequence emerges on the KRX3 side of the MCU et all as VIFGAIN2. With no signal on input, taking RF gain from max to minimum should swing the voltage on the U3 side of R22 from zero to 3 volts. If you grab the schematics you may be able to find these voltages and check them out. Using VR2REAR and VIFGAIN2 will find you the schematic spots in question. Maybe this will help. 73, Guy. On Sun, Oct 24, 2010 at 2:22 PM, Mike Scott m...@paxsen.com wrote: Joe (W4TV) Yes I have performed the gain calibration many times on both receivers using the K3 Utility with the XG2. I recently did it after loading the new K3 Utility that supposedly fixed some issue about writing receiver gains to memory. So now you make two people whose RF gain tracks. I can't begin to speculate anymore as to the difference in RF gain behavior in the two receivers. So to repeat: same antenna (to XG2), same stock filters with matched offset, same (0) filter gain, same ATT on, same PRE off, same IF filter width, same NB off, same NR off. Sub Rx gain set to minimum I can still copy signals and hear band noise, Main Rx RF gain set to minimum is dead band. This difference in RF-gain tracking makes it difficult to use reduction in RF gain as a method to manage high band noise conditions. I can't just grab both controls and move them the same, like I can with AF controls which track very well. Stan KR7R Main Rx RF gain behavior is bizarre. In the days of old potentiometers this would be explainable but not with gain controlled by firmware. Maybe a bad RF gain control with odd switch bounce behavior at some gain setting... I would try to move the RF gain knob while K3 is shut down to a new position and then turn it back on to see if the RF gain nonlinearity location changed to someplace other than 9 o'clock. AE6WA Mike Scott Tarzana, CA Joe W4TV said. Both of mine operate as expected (same RF/AF gain response for main and KRX3). Have you performed the RF Gain calibration on both of the receivers using a calibrated 50 uV signal source (e.g., XG-2)? __ 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] APF For K3
On Oct 24, 2010, at 2:59 PM, Bob wrote: I found the AF Tune peaking function in the old Kenwood TS930 to be quite useful. I'm generally not a fan of using audio peaking filters (in my early years of hamming, I spent too much time listening on receivers that had audio filters instead of adequate IF filtering), but I grudgingly thought the APF on my TS-940 made the difference between readability or not in certain weak signal situations on 160 and 80. Despite its DSP-based audio contouring, I've missed having an APF on my TS-950SDX (over a many-year period) and I'm thinking I wouldn't mind having a tunable APF on my K3 (which I've had for only a few weeks) as well. Bud, W2RU __ 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] APF For K3
kinda reminds me of the q multiplier I had on the old Drake 2B. That thing was unbelievable at bringing cw signals out of the soup. Lou WA3MIX - Original Message - From: Bruce Beford bruce.bef...@myfairpoint.net To: ka...@arrl.net Cc: elecraft@mailman.qth.net Sent: Sunday, October 24, 2010 2:10 PM Subject: Re: [Elecraft] APF For K3 Apparently not. Some with experience with other radio's implementation of an APF function say that the currently available filtration offerings on the K3 are not equivalent. As the link recently posted for Adam Farson's page on the Icom APF shows, an APF can roll off the adjacent frequencies, rather than having a flat pass-band, at whatever width. Like all audio enhancement, it's a rather subjective thing. Bruce, N1RX (Not an avid APF cheerleader, but I -do- like having many filtering options). -Original Message- From: Dick Roth, KA1OZ [mailto:raro...@comcast.net] Sent: Sunday, October 24, 2010 1:45 PM To: Bruce Beford Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] APF For K3 Seems to me that adjusting the Pitch to one that most comfortably stands out from others and then using Spot ought to accomplish the same thing. No? -- 73, Dick KA1OZ Middleborough, MA __ 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] APF For K3
My guess is that Q-multiplier was in the IF. The old HeathKit QF-1s were at 455KHz. For best functionality (and maximum difficulty?) this peaking function would work best withing the AGC loop at IF. At AF, it won't do a lot of good if you have another nearby, within pass band signal pumping the AGC. 73 de Brian/K3KO On 10/24/2010 19:38, Lou Kolb wrote: kinda reminds me of the q multiplier I had on the old Drake 2B. That thing was unbelievable at bringing cw signals out of the soup. Lou WA3MIX - Original Message - - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1144 / Virus Database: 422/3216 - Release Date: 10/24/10 __ 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] APF For K3
The APF does as you say, builds a narrow filter around an audio signal, and it does this down to a razor sharp peak. But what really makes it so great (and distinguishes it from just an audio filter) is that it adds another dimension. In addition It peaks or boosts the narrowed down audio signal. That is why we users say that it pulls the signal up out of the mud. The FT-1000's APF and my TS-930S (I wish I still had her, sniff, sniff) did this very effectively. The CW signal can be right down at the noise level, you know it is in there but cannot copy. By adjusting the APF you can pull the signal up out of the mud and copy the signal. Bob K6UJ On Oct 24, 2010, at 12:14 PM, Don Wilhelm wrote: I have never used a receiver with a button labeled APF, but I have used my K2 with an audio filter. It seems to me the only other characteristic of APF is that the center frequency can be changed. On the K3, we have the Dual Passband that may work in a similar manner. Set the width to the lowest value 50 Hz and turn on Dual PB and you have a wide filter with a peak at your sidetone pitch. You can change the Pitch if you wish to peak a different audio frequency, but for the life of me, I cannot imagine why anyone would want to peak any pitch other than his preferred sidetone pitch. If you want a little more peaking, turn on NR and set it to an aggressive setting. The way NR works is that it builds a narrow filter around a signal that it thinks is a valid signal - so you have a filter at the audio pitch where you have set the VFO. Yes, the K3 is different than those receiver that have APF, but in my opinion, it accomplishes the same thing, but differently. 73, Don W3FPR On 10/24/2010 2:47 PM, Paul Christensen wrote: I found the APF in my Icom 7800 worthless. Same here. Icom's implementation of APF in the '7700/'7800 is really an Audio Passband Filter with low Q. It's really no different than narrowing a DSP passband filter. What's unique about the FT-1000D's APF is that the Q is very high, although its affected with APF tuning. The high Q of the circuit forms a very narrow filter with fixed gain, and variable peaking frequency. Paul, W9AC __ 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] APF For K3
Roy Morris-6 wrote: I used APF in the past on CW contacts when needed. This feature seems to have been lost on some of todays modern radios. Because I haven't pounded the brass as much as I used to, I had forgotten about this wonderful APF feature. Those of us who have used it on CW know how really great this feature is. Weak CW signals that are unreadable are enhanced with APF making some QRP contacts possible that otherwise wouldn't be heard. Wayne has said he is putting this feature on the K3 list. I am thrilled that Elecraft is considering this feature. I am looking forward to having APF on my K3s. APF was discussed extensively in August 2009 (check the archives) including a simulation of the exact FT-1000D APF circuit I sent to Al W6LX. It has always been on the list but Wayne has now made no less than 3 promises on the Yahoo Groups K3 list in the past few days that we're working on it. Maybe something will actually come to pass this time! In the meantime: W6LX's simulation (PowerPoint with several graphs): http://sites.google.com/site/ft1000apf/w6lxanalysisoftheapfcircuitintheft-1000 How to emulate APF in the K3 if you have a 200 Hz filter: http://www.mail-archive.com/elecraft@mailman.qth.net/msg88687.html 73, Bill 73, Bill -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-For-K3-tp5667924p5668599.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] CAT PA on K3
Hello Just received my K3 and the KUSB. How do i connect the power amplifier (SPE 1K-FA automatic) and the PC computer onto the K3? Everything should be via RS232 ? ACC ? Tnx PY2ADR - Adriano Perazio SN 4795 __ 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] APF For K3
Be aware though that the DSP 'switches off' the EQ once you get to 100Hz and below bandwidth. If you raise your cw sidetone frequency band as you suggest and then wind down the bandwidth your signal will take a dive as you cross the 100Hz point. 73, Stewart Rolfe, GW0ETF N8XPQ wrote: I have found that using the receive EQ for this works quite nicely. I raise the frequency matching that of my side-tone and attenuate all others. The K3 will automatically switch to this EQ setting when you enable the CW mode and switch to the SSB setting when that mode is enabled. Good luck, Mike N8XPQ -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-For-K3-tp5667924p5668627.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] APF For K3
As Don says I find the audio filter very useful in my K2. I also have a Nescafe filter kit from the New England QRP Club that works very well on all my rigs including the K2. My old homebrew rcvr built around a BC453 with 85KC IF's had a homebrew Q-multiplier that was gud at peaking or nulling a signal. Some of the gud ol da stuff if it were sitting beside my new rig would probably not be as gud as I seem to remember. Whoops got off topic thinking of good ol days. Love my K2 Geo/W2BPI __ 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] APF For K3
Thanks Bob. I understand now. The AFX provides the effect of both narrowing the bandwidth and increasing the audio gain. That increases the effect of having the signal pop out of the noise. Any time we listen to a single-frequency or narrow-band signal surrounded by white (or pink) noise and then reduce the bandwidth to remove the off-frequency noise it will seem as the audio level has dropped too. That's because our hearing reacts to the total audio power coming down the audio channel which greatly varies with the bandwidth when noise is present. So, after decreasing the bandwidth to kill much of the noise, we raise the gain to bring the signal back up to a normal listening level. When we do that with filters in the I.F., the receiver's AGC system will bring the gain up automatically as the selectivity is narrowed. AFX provides the same effect when more filtering is wanted at audio frequencies - after the AGC loop. I doubt if I'd notice the difference since I normally copy weak signals with the AGC off. I'm used to riding the gain manually anyway. The first active audio filter I worked with that provided both gain and selectivity was the Selectoject from the 1950's. It was very popular back then. Ron AC7AC -Original Message- ...But what really makes it so great (and distinguishes it from just an audio filter) is that it adds another dimension. In addition It peaks or boosts the narrowed down audio signal. That is why we users say that it pulls the signal up out of the mud. The FT-1000's APF and my TS-930S (I wish I still had her, sniff, sniff) did this very effectively. The CW signal can be right down at the noise level, you know it is in there but cannot copy. By adjusting the APF you can pull the signal up out of the mud and copy the signal. Bob K6UJ __ 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] Elecraft CW Net Cancellation
There will be no 40 meter net today due to thunderstorms in the area. They are very rare but I have been having lightning strikes walk up the Columbia River valley only a few miles north of me. Some of the strikes are hitting much closer. Sorry, Kevin. KD5ONS -- Using Opera's revolutionary email client: http://www.opera.com/mail/ - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1144 / Virus Database: 422/3216 - Release Date: 10/24/10 __ 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] APF For K3
I am exited by the prospect of its arrival. The APF on my FT1000D was an excellent aid for weak signal work. I miss not having it on my K3. I'm sure Elecraft's firmware implementation of an APF will be quite unique and hopefully very useful. I'll gladly except every tool that Elecraft can add to the K3. 73, Mike K2MK Roy Morris-6 wrote: I used APF in the past on CW contacts when needed. This feature seems to have been lost on some of todays modern radios. Because I haven't pounded the brass as much as I used to, I had forgotten about this wonderful APF feature. Those of us who have used it on CW know how really great this feature is. Weak CW signals that are unreadable are enhanced with APF making some QRP contacts possible that otherwise wouldn't be heard. Wayne has said he is putting this feature on the K3 list. I am thrilled that Elecraft is considering this feature. I am looking forward to having APF on my K3s. Roy Morris W4WFB -- View this message in context: http://elecraft.365791.n2.nabble.com/APF-For-K3-tp5667924p5668902.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] K3 Rf gain tracking (main vs. sub)
Further to the issue that my K3 RF gain on the sub Rx won't cause the RF gain to go very low (I can still hear band noise and signals on the sub Rx at minimum gain). With the help of Guy I found the RF gain pots on the front panel schematic and understand how they might work. The high end of each 10K RF pot is at +5 volts, the low end is ground. The wiper is a voltage divider which goes to a PIC on the MCU board for decoding through an A-D converter on the PIC. The decoded pot voltage is then used later to compute RF (really IF) gain after some translation magic happens in the PIC and later after all the magic an analog IF gain level is created in a DAC to bias the RF IF amp stage. At least this is my understanding with a lot missing in between. It looks to me that there are HAGC1 and HAGC2 test points on the two RF boards. The HAGC is the hardware AGC which is derived from either the RF gain position Pots or H/W AGC circuitry. If I could find these test points and measure the 0 to 3 volts expected (0 = max gain and 3V = minimum gain) in the respective IF amplifiers I might learn that the sub RX never goes to 3V at minimum RF gain pot setting. The 0-3 volts is biasing a J309 IF amplifier. Because it might have been possible that the ground end of the Sub Rx RF pot was not at ground potential it was possible that the voltage signal on the wiper was not correct and never going to zero. This might be caused by a poor solder connection for example or just a faulty pot. The RF gain pots are accessible by removing the front bottom cover plate. Each of the RF-gain pot connections can be seen by inspecting the location. With a volt meter and tiny hook probes I measured the wiper voltage on the main and sub RF-gain pots at three gain settings: full on (CW), full off (CCW) and 12 o'clock. Pot full on full off 12 o'clock Main 4.682V .002V2.36V Sub 4.682V .002V ` 2.40V It looks to me like both RF-gain pots are doing exactly the right thing. So, now I am down to one MCU PIC A/D port is not working properly, a bad solder connection between the wiper arm and the PIC or Wayne is not decoding the two pots the same way in my serial 506 K3 or the main and sub Rx are treating the decoded RF gain positions differently or some other gain calculation is going on to modify the gain requested by the RF gain pots. I don't know how the variable RF gain setting is accomplished once the PIC decodes the pot position. Since there is no real current draw through the Pot I don't believe a bad solder joint is causing a partial voltage to arrive at the MCU PIC, it should either work or not. To the person who has weird main receiver RF gain action the test I did could help you determine if it is the Pot. As you are looking at the pot with the bottom front cover off put a volt meter on the middle of the three pot connections, the ones on the mic connector side of the pot, the other side of the meter to a convenient ground. You should be working with the most accessible or bottom-most pot. With K3 power on move the main Rx RF gain and check to see that voltage moves from ~5v to 0v smoothly as you turn the pot counter clockwise. I used mini hook grabbers to hook up the meter before turning power on and verified that pot resistance to ground moved properly when gain was moved. I didn't want to have a slip up and short something, this verifies I was connected to the wiper arm of the pot. You can't really test the full range of the pot in circuit with power off with an ohm meter as the high side shows something like 900 ohms resistance to ground with power off. AE6WA Mike Scott Tarzana, CA __ 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 - MicroKeyer 2 - mmtty transmit issues on RTTY using FSK-D mode
I am trying to get my K3 operational on rtty and have run aground. Receive works fine. Transmit using FSK-D mode in the K3 keys the transmitter but the FSK signal does not trigger the K3 to transmit both tones. I hear a single tone in the monitor and the P3 also shows the same thing. Using the K3 utility to send rtty works fine but this is a different interface, bypassing the MicroKeyer 2. So the big question is what am I doing wrong? I have posted this to the MicroHam Yahoo group, it will be interesting to see where the best advice comes from. Details of the hardware and software configuration are available on request. Jim/N1NK __ 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 Rf gain tracking (main vs. sub)
With no antenna attached do you see 0-3 volt range on the U3 side of R22 on the subRX board as you vary the RF gain from min to max? This would be the far end of the gain process. 73, Guy On Sun, Oct 24, 2010 at 7:48 PM, Mike Scott m...@paxsen.com wrote: Further to the issue that my K3 RF gain on the sub Rx won't cause the RF gain to go very low (I can still hear band noise and signals on the sub Rx at minimum gain). With the help of Guy I found the RF gain pots on the front panel schematic and understand how they might work. The high end of each 10K RF pot is at +5 volts, the low end is ground. The wiper is a voltage divider which goes to a PIC on the MCU board for decoding through an A-D converter on the PIC. The decoded pot voltage is then used later to compute RF (really IF) gain after some translation magic happens in the PIC and later after all the magic an analog IF gain level is created in a DAC to bias the RF IF amp stage. At least this is my understanding with a lot missing in between. It looks to me that there are HAGC1 and HAGC2 test points on the two RF boards. The HAGC is the hardware AGC which is derived from either the RF gain position Pots or H/W AGC circuitry. If I could find these test points and measure the 0 to 3 volts expected (0 = max gain and 3V = minimum gain) in the respective IF amplifiers I might learn that the sub RX never goes to 3V at minimum RF gain pot setting. The 0-3 volts is biasing a J309 IF amplifier. Because it might have been possible that the ground end of the Sub Rx RF pot was not at ground potential it was possible that the voltage signal on the wiper was not correct and never going to zero. This might be caused by a poor solder connection for example or just a faulty pot. The RF gain pots are accessible by removing the front bottom cover plate. Each of the RF-gain pot connections can be seen by inspecting the location. With a volt meter and tiny hook probes I measured the wiper voltage on the main and sub RF-gain pots at three gain settings: full on (CW), full off (CCW) and 12 o'clock. Pot full on full off 12 o'clock Main 4.682V .002V 2.36V Sub 4.682V .002V ` 2.40V It looks to me like both RF-gain pots are doing exactly the right thing. So, now I am down to one MCU PIC A/D port is not working properly, a bad solder connection between the wiper arm and the PIC or Wayne is not decoding the two pots the same way in my serial 506 K3 or the main and sub Rx are treating the decoded RF gain positions differently or some other gain calculation is going on to modify the gain requested by the RF gain pots. I don't know how the variable RF gain setting is accomplished once the PIC decodes the pot position. Since there is no real current draw through the Pot I don't believe a bad solder joint is causing a partial voltage to arrive at the MCU PIC, it should either work or not. To the person who has weird main receiver RF gain action the test I did could help you determine if it is the Pot. As you are looking at the pot with the bottom front cover off put a volt meter on the middle of the three pot connections, the ones on the mic connector side of the pot, the other side of the meter to a convenient ground. You should be working with the most accessible or bottom-most pot. With K3 power on move the main Rx RF gain and check to see that voltage moves from ~5v to 0v smoothly as you turn the pot counter clockwise. I used mini hook grabbers to hook up the meter before turning power on and verified that pot resistance to ground moved properly when gain was moved. I didn't want to have a slip up and short something, this verifies I was connected to the wiper arm of the pot. You can't really test the full range of the pot in circuit with power off with an ohm meter as the high side shows something like 900 ohms resistance to ground with power off. AE6WA Mike Scott Tarzana, CA __ 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 Rf gain tracking (main vs. sub)
Mike Scott-7 wrote: To the person who has weird main receiver RF gain action the test I did could help you determine if it is the Pot. Thanks, Mike, I'll do the same measurement and see what it tells me. Erratic behavior seems most likely due to a bad pot, but, as Sherlock would say, theorizing without data is a capital mistake. - 73, Stan - KR7C -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Rf-gain-tracking-main-vs-sub-tp5668917p5669008.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] Elecraft SSB Net results (10-24-10)
Propagation seemed OK this week, but QRM from 14.316 was a problem. Marty and the Icom group usually are respectful of our net start time; but they went on long today, with S9+ QRM to me at times. We had 30 participants over a 24 minute net, with no discussion following check-ins. Thanks to everyone who checked in. Here is the list of participants. Station NameQTH Rig S/N W4PFM PaulVA K3 1673 K4GCJ Gerry NC K3 1597 AE6IC FredCA K3 2241 WB6CLZ MikeCA K3 4522 K6EQRoger CA K3 4629 AB1DD CarlVT K3 3782 NF8JPaulMI K3 758 KK7PLyleWA K3 3036 K6DSW Don CA K3 3138 KD0HII Brian IA K3 3672 KO5YKen NM K3 4442 N0WCH Quentin CO K3 4823 N6JWJohnCA K3 936 W4RKS Jim AL K3 3618 W0FMTerry MO K3 474 N4FZGeneKY K3 4128 W2RWA DickNY K3 2603 KG7UY Dennis OR K2 1982 WU9BSteve AZ K3 3979 W8OVDaveTX K3 3139 AI4VZ George GA K3 2412 KE4IMN Jim FL K3 3307 KA0NCR Arnie NE K3 185 N1LQDaveMA K3 371 W8YMO Harry OH K3 166 N1JMJohnAZ K3 2555 N1IRB Scott CT K3 4555 AC0NM Glenn GA K3 2843 N9NEI Ed IN TS2000 NS7PPhilOR K3 1826 73, Phil, NS7P __ 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 - MicroKeyer 2 - mmtty transmit issues on RTTY using FSK-D mode
Jim, I do not have enough information for a good answer, but I can ask a question -- What are the voltage levels you are applying to the ACC pin 1? It must be 0 volts and +5 volts - there is a pullup resistor in the K3, so you only need an open collector transistor to accomplish the keying from an RS-232 signal. The TTL voltage must be referenced to ground (ACC pin 5 or pin 12). What do you mean by bypassing the MicroKeyer 2 - what is driving the ACC connector pin 1 (and K3 ground). I am not familiar enough with the Microkeyer 2 to understand its connection options. If you are applying raw RS-232 levels to ACC pin 1, you may have damaged the TTL input and/or the pullup resistor. The K3 Utility uses an entirely different path to create RTTY (or PSK31) from ASCII input through the RS-232 connector, so there is not a 1 to 1 correlation between the K3 Utility method and the FSK input to the ACC connector. 73, Don W3FPR On 10/24/2010 7:57 PM, Jim Spears wrote: I am trying to get my K3 operational on rtty and have run aground. Receive works fine. Transmit using FSK-D mode in the K3 keys the transmitter but the FSK signal does not trigger the K3 to transmit both tones. I hear a single tone in the monitor and the P3 also shows the same thing. Using the K3 utility to send rtty works fine but this is a different interface, bypassing the MicroKeyer 2. So the big question is what am I doing wrong? I have posted this to the MicroHam Yahoo group, it will be interesting to see where the best advice comes from. Details of the hardware and software configuration are available on request. __ 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 Tune Button
When the TUNE button is engaged, are there settings that determine how the radio responds? On my radios, depressing the TUNE button will display the SWR. I would rather it displayed the frequency. I thought that K5ZD's K3 did exactly that when I used it at WRTC. Although somewhat impolite, I occasionally sweep the band in TUNE mode as an SWR check of the antennas. Not being able to see the frequency makes this less convenient. Similarly, if TUNE is depressed and I turn the VFO knob, the response varies by band. Sometimes the tuning rate is fast, sometimes it is slow, and sometimes the frequency will not change at all. There must be a setting that controls this, but I have tried the manual and could not find the answers Thanks and 73 Tom W2SC 8P5A __ 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 Tune Button
Your more than right. That is not polite period. It is not legal! I will forward your e-mail to the FCC. Geo/W2BPI __ 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] Elecraft CW Net Report for October 24th, 2010
Good Evening, It was a stormy day here. The wind was high enough to cause problems with hearing even with my full coverage headphones on. The nearby trees were shedding needles, cones, and a few odd branches as the gusts hit 50 mph. Rain was not as heavy as predicted but we were experiencing more lightning strikes than I have had in years. Normally we can go a year without a single hit but over the last 24 hours there must have been twenty of them. Luckily most of them stay in the Columbia River valley but I still unscrew all of my antennas to keep them from getting zapped through inductance. Before the 40 meter net I was hearing them approach so I cancelled it. Then for a few minutes there were no strikes. But over the time I would have been on the air collecting check ins there were quite a few close strikes. Good thing I had all the antennas off their respective rigs. The list = On 14050 kHz at 2200z: NO8V - John - MI - K3 - 820 N0TA - John - CO - K3 - 994 AB9V - Mike - IN - K3 - 398 N0AR - Scott - MN - K2 - 4866 K4JPN - Steve - GA - K2 - 1422 WB5BKL - Nick - TX - K3 - 231 W0CZ - Ken - ND - K3 - 457 K1THP - Dave - CT - K3 - 686 AB2ZT - Palamadi - NJ Next week we can celebrate Halloween during the two nets; costumes are encouraged :) Hopefully this weather will pass and not knock down any more trees. I have enough of them down already. Enough for five years of firewood at least! I don't know if I will be able to harvest all the downed alder in time. The Doug fir and hemlock last much longer than the alder. A year or two on the ground and I may as well let it feed the earth. I have found evidence of elk very close to the house as I work in the woods. It would be nice to see them occasionally but I expect I will start hearing them bugle soon. The coyotes are enjoying the full moon even if it is behind the clouds. The nearby clearcut has started to sprout log trucks. Each day another ten to twenty loads drive by. They have been kind by not blasting their jake brakes as much as they could. Luckily they don't have much elevation change to allow them to gain speed. Most of their noise is caused by them climbing the uphill grade on the far side of my property. Until next week stay dry, 73, Kevin. KD5ONS (Net Control Operator 5th Class) - -- Using Opera's revolutionary email client: http://www.opera.com/mail/ - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1144 / Virus Database: 422/3217 - Release Date: 10/24/10 __ 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 - MicroKeyer 2 - mmtty transmit issues on RTTY using FSK-D mode
On Oct 24, 2010, at 4:57 PM, Jim Spears wrote: I hear a single tone in the monitor and the P3 also shows the same thing. A microKeyer does not modulate the FSK keying signal unless the keyer is commanded to do so by the software that is controlling it. If nothing is sent to the keyer from the controlling software, the keying pin from the microKeyer to the K3 will be in a constant Mark state (a single fixed carrier). A standard convention in Amateur RTTY is to insert the Baudot LTRS character when nothing is typed. This produces the familiar two tone diddle signal that you hear from RTTY stations when they are idling. Among other things, the diddle provides a reference for the automatic threshold control function in the demodulator to work on in case selective fading causes the two tones to have unequal energy. However, the microKeyer by itself does not automatically insert these characters for you. The software that is driving the microKeyer is the one that is responsible for inserting the Baudot LTRS characters when the input buffer is empty (i.e., when you are not typing). If the software is doing the proper thing, you should see the green front panel LED on the microKeyer II flashing. If the FSK LED on the microKeyer II is fixed in the on or off state, you might check if there is a diddle option in the software that needs to be turned on. 73 Chen, W7AY __ 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 Tune Button
Good ..Good ! Bob K3DJC On Sun, 24 Oct 2010 21:19:28 EDT w2b...@aol.com writes: Your more than right. That is not polite period. It is not legal! I will forward your e-mail to the FCC. Geo/W2BPI Moms Asked to Return to School Grant Funding May Be Available to Those That Qualify. http://thirdpartyoffers.juno.com/TGL3141/4cc4e5e277ca88d4a9m03vuc __ 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] P3 firmware upgrade
Where Can I find the latest beta for the P3 to download. The info on .38 is shown but no way to download it. Thanks Van W4GIW __ 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] DXE Active RX ant for Sub Rx a bit OT
Are there any other K3 folks using the DXE Active horizontal antenna for their K3 Sub RX? So far it appears to be a good choice for the Sub Rx in conjunction with my vertical TX antenna. Please respond off list so we do not tie up the list with a bit OT conversation. Rich __ 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 Tune Button
If it were up to me, I'd want Elecraft to lock the frequency when in TUNE so that folks like you couldn't do that. Dave AB7E On 10/24/2010 6:07 PM, Georgens, Tom wrote: When the TUNE button is engaged, are there settings that determine how the radio responds? On my radios, depressing the TUNE button will display the SWR. I would rather it displayed the frequency. I thought that K5ZD's K3 did exactly that when I used it at WRTC. Although somewhat impolite, I occasionally sweep the band in TUNE mode as an SWR check of the antennas. Not being able to see the frequency makes this less convenient. Similarly, if TUNE is depressed and I turn the VFO knob, the response varies by band. Sometimes the tuning rate is fast, sometimes it is slow, and sometimes the frequency will not change at all. There must be a setting that controls this, but I have tried the manual and could not find the answers Thanks and 73 Tom W2SC 8P5A __ 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 - MicroKeyer 2 - mmtty transmit issues on RTTY using FSK-D mode
Transmit using FSK-D mode in the K3 keys the transmitter but the FSK signal does not trigger the K3 to transmit both tones. I hear a single tone in the monitor and the P3 also shows the same thing. Which monitor? Is your software generating shift? Do you see the FSK LED flickering on MK II? Have you checked the cable to see if the FSK line is correct and connected to the FSK output pin on the MK II? 73, ... Joe, W4TV On 10/24/2010 7:57 PM, Jim Spears wrote: I am trying to get my K3 operational on rtty and have run aground. Receive works fine. Transmit using FSK-D mode in the K3 keys the transmitter but the FSK signal does not trigger the K3 to transmit both tones. I hear a single tone in the monitor and the P3 also shows the same thing. Using the K3 utility to send rtty works fine but this is a different interface, bypassing the MicroKeyer 2. So the big question is what am I doing wrong? I have posted this to the MicroHam Yahoo group, it will be interesting to see where the best advice comes from. Details of the hardware and software configuration are available on request. Jim/N1NK __ 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
