Re: [Elecraft] [K2] Miscellaneous Accessory Board Project
For those whom have requested the PCB previously offered, I am placing an order for two more sets of boards this evening. I will keep all requesters on the list and will notify you when I have received the boards, about 1 week. 73 Thanks, Tom KG7CFC -- The foolish man seeks happiness in the distance. The wise man grows it under his feet. - James Oppenheim ^^ --... ...-- / -.- --. --... -.-. ..-. -.-. Tom Taylor KG7CFC openSUSE 13.1 (64-bit), Kernel 3.11.6-4-default, KDE 4.11.2, AMD Phenom X4 955, GeForce GTX 550 Ti (Nvidia 325.15) 4GB RAM -- 3x1.5TB sata2 -- 128GB-SSD FF 27.0, claws-mail 3.9.2 registered linux user 263467 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Any EME gurus with the XV-144 monitoring?
Charlie, EME depends on the abilities of both stations. For CW-eme on 2m this means the sum of antenna gain of both stations should equal 40 dBi, and the transmit station runs a minimum of 600w output. JT65 effectively increases station performance by roughly 10-dB. That means two stations running 15 dBi antennas and 600w. The number that you need to calculate is EIRP=Effective Isotropic Radiated Power. 15-dBi converts to a power ratio of 31.6. EIRP=31.6*600 = 18.97 kW When I began using JT65 in 2005 I had four 10-element yagis with total of 21 dBi and ran 150w. My EIRP = 125.9*150= 18.88 kW. I could make contact with a single 10-element yagi station running 600w, or a station with two 10-element yagis and 300w. That was right down at the bare minimum needed. So you can trade off less antenna gain with more transmit power or vice versa. I recommend at least two antennas as this helps receive other small stations. With that you can get started with a 150w amp if you realize that you will be limited to working larger stations. If you want to work many stations then upgrading to 600w will make a huge difference. I currently run 1300w on the four antenna so my EIRP = 163.67 kW My website has a lot of info about eme: http://www.kl7uw.com 73, Ed - KL7UW - From: Charlie , W5COV cv...@cox.net To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Any EME gurus with the XV-144 monitoring? Message-ID: 53321a35.4000...@cox.net Content-Type: text/plain; charset=ISO-8859-1; format=flowed I too would like to see more information, especially on how minimal this station can be and still be able to work a decent amount of contacts. Many years ago, before the current digital modes, and better, more precise equipment was being used, I made a handful of EME 2 meter contacts with a 4 long boom yagi station, using a home brew 500 watt amplifier. Not really enough interest these days or enough of a budget to duplicate that setup, but still have an interest in it . Charlie, W5COV 73, Ed - KL7UW http://www.kl7uw.com Kits made by KL7UW Dubus Mag business: dubus...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] T/R switching problem
Hi Jan, What is your antenna. There has been an ongoing thread on the SteppIR site regarding this identical problem with many types of transceivers, not just the K3. If you have a SteppIR antenna (any model) you should take a look at their Yahoo site. 73, Mike K2MK Jan Ditzian wrote I am having a problem with T/R switching in my K3. The symptom is that, after I transmit, the receive signals are sometimes very attenuated. This problem has gotten worse. At first, simply a quick tap on the PTT switch fixed everything, but now, at least on phone, I must make a brief additional transmission to get the receive to return. Today, the problem got worse, and sometimes I have to really fuss with things to get receive back. Here are some questions: 1. Is there a T/R relay in the K3, and does this sound like it is sticking, at least to the extent that it does not make good contact on receive? 2. Has anyone had the similar problem, and what was the solution? 3. If it is a relay, can it be replaced easily, or is this a return to Elecraft situation? 4. If it is simply a relay replacement, where is the relay located? Thank you, Jan, KX2A -- View this message in context: http://elecraft.365791.n2.nabble.com/T-R-switching-problem-tp7585979p7585987.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX3 OSC Temp And Freq Drift Relationship?
Tonight I have been experimenting on PSK31 at 3 watts and 5 watts. In my shack the OSC Temp is about 38 deg and transmitting my CQ call about every 60 seconds @ 3 watts takes the OSC Temp to 39 deg, on RX it drops back to 38 deg. At 5 watts it goes up to 41 deg, but immediately settles back to 38 deg. My question is, what would the estimated frequency change be, per degree of OSC Temp change? I am trying to work out the total freq shift between the start and the end of my PSK31 transmission. Now, I have not done the OSC temp compensation routine to my radio. Trying not to go down this road in case I make a hash of it :-) In closing, I will not be using WSPR or JT65 etc with this radio. 73, Jack VK4JRC Club.www.cqara.org.au Member WIA SARL ARRL GQRP #14392 QRPARCI #15068 VKQRP.#833 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?
I can't answer your question without measuring your particular KX3, and about the only thing I can do is quote the specification of +/- 1 ppm over 0 to 50 degC. You can better that with the Temp Compensation. I don't think doing the Temperature Compensation will make a 'hash' of anything, but if you have such fears, save the configuration before you do that. It is a time consuming process, but it is not difficult. Plan about 2 hours to accomplish that process - you don't even have to open the KX3. 73, Don W3FPR On 3/26/2014 8:59 AM, Jack Chomley wrote: Tonight I have been experimenting on PSK31 at 3 watts and 5 watts. In my shack the OSC Temp is about 38 deg and transmitting my CQ call about every 60 seconds @ 3 watts takes the OSC Temp to 39 deg, on RX it drops back to 38 deg. At 5 watts it goes up to 41 deg, but immediately settles back to 38 deg. My question is, what would the estimated frequency change be, per degree of OSC Temp change? I am trying to work out the total freq shift between the start and the end of my PSK31 transmission. Now, I have not done the OSC temp compensation routine to my radio. Trying not to go down this road in case I make a hash of it :-) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] T/R switching problem
I have a similar (close but not identical to symptoms below) problem with K3 receive attenuation. I do not have a SteppIR and this same problem occurred on more than one antenna (80-meter dipole, Traffie Hex Beam). My symptoms were that when I turned on the radio in the morning, the band per the display on the P3 was flat, virtually no visible signals. No matter as I was doing my morning reading with my coffee. Later, I went to the radio and there should have been some good activity on 20, 17, 15, 12, and 10. I did have signals but no where near as much as I think there should have been. I thought maybe the KAT500 was out of tune so I fooled with that, Xmitted tune and so on and no real change. I checked everything I could think of such as change in PRE setting (I was on PRE), Attenuation (no, was not), and so on. Finally, I tried the old computer programming trick, turn it off and turn it on again. When the K3 came back up the bands were crowded with signals. So, there was some significant attenuation going on but turning off (front panel switch only) the K3 and turning it back on fixed everything. Ideas, comments?? Oh, this has happened only that one time so far. 73, phil, K7PEH On Mar 26, 2014, at 4:14 AM, Mike K2MK k...@comcast.net wrote: Hi Jan, What is your antenna. There has been an ongoing thread on the SteppIR site regarding this identical problem with many types of transceivers, not just the K3. If you have a SteppIR antenna (any model) you should take a look at their Yahoo site. 73, Mike K2MK Jan Ditzian wrote I am having a problem with T/R switching in my K3. The symptom is that, after I transmit, the receive signals are sometimes very attenuated. This problem has gotten worse. At first, simply a quick tap on the PTT switch fixed everything, but now, at least on phone, I must make a brief additional transmission to get the receive to return. Today, the problem got worse, and sometimes I have to really fuss with things to get receive back. Here are some questions: 1. Is there a T/R relay in the K3, and does this sound like it is sticking, at least to the extent that it does not make good contact on receive? 2. Has anyone had the similar problem, and what was the solution? 3. If it is a relay, can it be replaced easily, or is this a return to Elecraft situation? 4. If it is simply a relay replacement, where is the relay located? Thank you, Jan, KX2A -- View this message in context: http://elecraft.365791.n2.nabble.com/T-R-switching-problem-tp7585979p7585987.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to phys...@mac.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] T/R switching problem
The T/R problem has occurred with different antennas. However, there are several interconnecting coax cables in the line, and these do not change. All are soldered, but they are quite old, and home-constructed. I suspect that if it is a cable problem, it is in the shack. I will pursue this line of investigation and report back. Thanks to those who have helped me to take a step forward on this problem. 73, Jan, KX2A __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] T/R switching problem
Jan: I've had this problem several times over the years. Intermittent quiet during Rx, tap the key to send a squirt of RF and the band livens up. For a while. When I first encountered this, my first suspicion was a 40 meter only problem with my ICOM transceiver. My tower climbing buddy just moved slightly and retightened all the cable clamps on the linear loading wires of my 40 meter beam and the problem went away. (I've since replaced that antenna). One time it was a loose coaxial cable connector. It's hard to find these. They might require certain temperature or humidity or wind or ... to re-create. I have a number of connectors between the radio and the antennas. Sometimes I can isolate the behavior to one band or another, and that helps me locate where in my switching arrangement the problem might lie. The K3 (and KPA500, and KXPA100) use solid state devices for T/R switching, and tend to have working fine or not working at all behavior. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jan Sent: Wednesday, March 26, 2014 7:57 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] T/R switching problem The T/R problem has occurred with different antennas. However, there are several interconnecting coax cables in the line, and these do not change. All are soldered, but they are quite old, and home-constructed. I suspect that if it is a cable problem, it is in the shack. I will pursue this line of investigation and report back. Thanks to those who have helped me to take a step forward on this problem. 73, Jan, KX2A __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to d...@elecraft.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: New soldering station needed
I have a Hakko FX-888, works great, looks like a kids toy. I have a variety of tips, large screwdriver to very small conical and have done everything from AWG4 lugs to SOT23 SMTs, leaded and lead free solder. Temp adjustable and very good heat and recovery. I have also used a Metcal and like the Hakka just as much. Lots of tips available. Mark W7MLG On Mar 24, 2014 3:44 PM, Cady, Fred fc...@ece.montana.edu wrote: Hi all, My venerable and aged Weller EC2000 solder station has given up the ghost. Anybody have any suggestions of a good replacement - temperature controlled 300 - 800 degrees or so, digital display, a range of tips. I have done, but don't do as a practice, surface mount projects. Thoughts? Your favorites? Thanks and 73, Fred KE7X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to marklgoldb...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?
Jack, My KX3 #5539 is used on and off for PSK31 and JT9 / JT65. I've made a bunch of JT65 and JT9 QSO's with it on 80, 20, and 10 meters, in addition to quite a few PSK31 contacts on several bands. That being said, I did do the temperature compensation procedure before I started doing data JT9 and JT65 modes with the KX3. As Don said, it is a very easy procedure, but just set aside about 90 - 120 minutes to complete it. The only tools you need are (1) a refrigerator, and (2) a hair dryer. :-) 73, Jim / W6JHB On Wednesday, Mar 26, 2014, at Wednesday, 5:59 AM, Jack Chomley wrote: Tonight I have been experimenting on PSK31 at 3 watts and 5 watts. In my shack the OSC Temp is about 38 deg and transmitting my CQ call about every 60 seconds @ 3 watts takes the OSC Temp to 39 deg, on RX it drops back to 38 deg. At 5 watts it goes up to 41 deg, but immediately settles back to 38 deg. My question is, what would the estimated frequency change be, per degree of OSC Temp change? I am trying to work out the total freq shift between the start and the end of my PSK31 transmission. Now, I have not done the OSC temp compensation routine to my radio. Trying not to go down this road in case I make a hash of it :-) In closing, I will not be using WSPR or JT65 etc with this radio. 73, Jack VK4JRC Club.www.cqara.org.au Member WIA SARL ARRL GQRP #14392 QRPARCI #15068 VKQRP.#833 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to w6...@me.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: New soldering station needed
If I wanted to be prepared for whatever comes along, I'd get a large and small chisel, plus small conical for SMD. For example: 5.2mm chisel T15-D52 1.2mm chisel T15-D12 0.2mm conical T15-BLL The long slender snoot on that conical makes it easier to see an SMD part underneath. The D24/2.4mm chisel is also nice if you want something big enough to hit a larger through hole tab, but you don't want to swap tips to get into a tight space. The colored sleeves are also nice. You can hot swap tips and the bright colors (orange, green, blue, etc) mean you can quickly grab the size you want without close inspection. Those are part# B321x, where x specifies the color. 73, Josh W6XU On 3/25/2014 6:14 PM, Phil Debbie Salas wrote: What tip or tips do you recommend? They have a 4mm chisel, a 5.2mm chisel, and a conical. Thanks, Phil – AD5X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K3 interface to Signalink USB question
Hello everyone! I have a Signalink USB box that I'd like to interface with my new K3. From what I understand the preferred connection method is via the rear Line-In/Out jacks, right? I am using those with my rack audio gear, though (xlr mic/EQ/mixer/etc). What would you guys suggest that I do? Can/should I use the front mic connector (it is the standard Kenwood 8-pin pinout, right?). Or is it possible to connect the Signalink inline with the audio stuff, between the rack and the K3? Also, I have a new LP-PAN with an E-mu 0404 sound card that I haven't connected yet. So I wonder if that can somehow be used for the Signalink. I also have an iPlus box (FYI). Thanks in advance for your suggestions and ideas! Slava Baytalskiy sla...@nullserv.com W2RMS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 interface to Signalink USB question
Sal, When I had a SignaLink connected to my K3, I had the Kenwood cable set for the SignaLink. It connected as follows: -USB from computer to SignaLink -Cable from SignaLink to K3 rear panel Line-In and Line-Out, as appropriately marked. Now I just use stereo cables directly from the sound card on my PC into the rear panel Line-In and Line-Out on the K3. I route K3 line-out to computer line-in and K3 line-in to computer line-out. I'm not familiar with the other audio equipment you're using, so can't venture a comment there. Hope this helps. 73 es gl de --Ian Ian Kahn, KM4IK Roswell, GA EM74ua km4ik@gmail.com K3 #281, P3 #688, KPA500 #1468 HRD v5.x/6.0 Test Team -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Slava Baytalskiy Sent: Wednesday, March 26, 2014 12:37 PM To: Elecraft@mailman.qth.net Subject: [Elecraft] K3 interface to Signalink USB question Hello everyone! I have a Signalink USB box that I'd like to interface with my new K3. From what I understand the preferred connection method is via the rear Line-In/Out jacks, right? I am using those with my rack audio gear, though (xlr mic/EQ/mixer/etc). What would you guys suggest that I do? Can/should I use the front mic connector (it is the standard Kenwood 8-pin pinout, right?). Or is it possible to connect the Signalink inline with the audio stuff, between the rack and the K3? Also, I have a new LP-PAN with an E-mu 0404 sound card that I haven't connected yet. So I wonder if that can somehow be used for the Signalink. I also have an iPlus box (FYI). Thanks in advance for your suggestions and ideas! Slava Baytalskiy sla...@nullserv.com W2RMS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to km4ik@gmail.com --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 interface to Signalink USB question
Slava, Yes, you should be able to use the front mic jack. Set the SignaLink for mic level output rather than line level (see the SignaLink documentation). Turn bias off for the front mic. It is feasible that you could feed the SignaLink into your audio rack, but it should not run through any of the conditioning mechanisms. If you do that, you would want to kill all other inputs to your audio rack and just run the SignaLink 'straight through' to the Line In on the K3. Whether that is possible or not depends on the capabilities of your mixer. 73, Don W3FPR On 3/26/2014 12:36 PM, Slava Baytalskiy wrote: Hello everyone! I have a Signalink USB box that I'd like to interface with my new K3. From what I understand the preferred connection method is via the rear Line-In/Out jacks, right? I am using those with my rack audio gear, though (xlr mic/EQ/mixer/etc). What would you guys suggest that I do? Can/should I use the front mic connector (it is the standard Kenwood 8-pin pinout, right?). Or is it possible to connect the Signalink inline with the audio stuff, between the rack and the K3? Also, I have a new LP-PAN with an E-mu 0404 sound card that I haven't connected yet. So I wonder if that can somehow be used for the Signalink. I also have an iPlus box (FYI). Thanks in advance for your suggestions and ideas! Slava Baytalskiy sla...@nullserv.com W2RMS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to w3...@embarqmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Fwd: Re: T/R switching problem
The only time I have experienced some amount of attenuation on receive is when I was using some other amplifier besides the KPA 500. I found I had to totally disconnect all my cabling between the amplifier and the rig. Since I am using the K line completely, trying to use an external amp other than the KPA 500 can be done without disconnecting all the cabling, but on receive you will experience attenuation of the receive signals. To have full receive using another brand of amp, you will have to remove the data transfer cabling between the rig and amp. I hope I have this right, as it has been some time since I experimented with using an amp with more output than the KPA 500. Toby K4NH Original Message Subject:Re: [Elecraft] T/R switching problem Date: Wed, 26 Mar 2014 06:53:18 -0700 From: Phil Hystad phys...@mac.com To: Mike K2MK k...@comcast.net CC: elecraft@mailman.qth.net I have a similar (close but not identical to symptoms below) problem with K3 receive attenuation. I do not have a SteppIR and this same problem occurred on more than one antenna (80-meter dipole, Traffie Hex Beam). My symptoms were that when I turned on the radio in the morning, the band per the display on the P3 was flat, virtually no visible signals. No matter as I was doing my morning reading with my coffee. Later, I went to the radio and there should have been some good activity on 20, 17, 15, 12, and 10. I did have signals but no where near as much as I think there should have been. I thought maybe the KAT500 was out of tune so I fooled with that, Xmitted tune and so on and no real change. I checked everything I could think of such as change in PRE setting (I was on PRE), Attenuation (no, was not), and so on. Finally, I tried the old computer programming trick, turn it off and turn it on again. When the K3 came back up the bands were crowded with signals. So, there was some significant attenuation going on but turning off (front panel switch only) the K3 and turning it back on fixed everything. Ideas, comments?? Oh, this has happened only that one time so far. 73, phil, K7PEH On Mar 26, 2014, at 4:14 AM, Mike K2MK k...@comcast.net wrote: Hi Jan, What is your antenna. There has been an ongoing thread on the SteppIR site regarding this identical problem with many types of transceivers, not just the K3. If you have a SteppIR antenna (any model) you should take a look at their Yahoo site. 73, Mike K2MK Jan Ditzian wrote I am having a problem with T/R switching in my K3. The symptom is that, after I transmit, the receive signals are sometimes very attenuated. This problem has gotten worse. At first, simply a quick tap on the PTT switch fixed everything, but now, at least on phone, I must make a brief additional transmission to get the receive to return. Today, the problem got worse, and sometimes I have to really fuss with things to get receive back. Here are some questions: 1. Is there a T/R relay in the K3, and does this sound like it is sticking, at least to the extent that it does not make good contact on receive? 2. Has anyone had the similar problem, and what was the solution? 3. If it is a relay, can it be replaced easily, or is this a return to Elecraft situation? 4. If it is simply a relay replacement, where is the relay located? Thank you, Jan, KX2A -- View this message in context: http://elecraft.365791.n2.nabble.com/T-R-switching-problem-tp7585979p7585987.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to phys...@mac.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to w4c...@centurylink.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: New soldering station needed
The FX-951 features look great and I'm considering one to replace my old Weller EC2001 with EC1201A pencil. Tips are hard to find for that model these days. What FX-951 tips work well for SMD parts? Mostly I solder/desolder components with leads, but occasionally I need to solder or desolder SMD chips and flat packs (I think that's the name for discreet components.) In addition to the Weller EC2001/ EC1201A, I have a Hakko 808 desolder gun. I can sort of muddle my way through with one of those and manual tweezers, and have used ChipQuik to with some success to desolder SMD ICs, but the tips I have for the EC1201A aren't small enough and the desolder gun tip is sometimes too big or overkill for SMD chips with a lot of leads. It looks like Hakko doesn't offer desolder tweezers for the FX-951, but I don't know if desolder tweezers would really improve things or be worth it for my occasional SMD requirements. There's a desolder tweezer for the FX-888D, but I prefer the features of the FX-951. 73, Dick WC1M -Original Message- From: Mark Goldberg [mailto:marklgoldb...@gmail.com] Sent: Wednesday, March 26, 2014 11:33 AM To: Cady, Fred Cc: Elecraft Mailing List Subject: Re: [Elecraft] OT: New soldering station needed I have a Hakko FX-888, works great, looks like a kids toy. I have a variety of tips, large screwdriver to very small conical and have done everything from AWG4 lugs to SOT23 SMTs, leaded and lead free solder. Temp adjustable and very good heat and recovery. I have also used a Metcal and like the Hakka just as much. Lots of tips available. Mark W7MLG On Mar 24, 2014 3:44 PM, Cady, Fred fc...@ece.montana.edu wrote: Hi all, My venerable and aged Weller EC2000 solder station has given up the ghost. Anybody have any suggestions of a good replacement - temperature controlled 300 - 800 degrees or so, digital display, a range of tips. I have done, but don't do as a practice, surface mount projects. Thoughts? Your favorites? Thanks and 73, Fred KE7X _ _ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to marklgoldb...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Distortion
K2 Audio Distortion. My otherwise flawless K2 # 7359 is found to have serious audio distortion problems on received and transmitted signals on 40 meter. The problem appears as soon as I go above 7171 kHz. On 7182 the problem makes SSB contacts impossible Lower frequencies do not suffer. Why ? I still haven’t checked the problem on other bands. 73 de OZ5RB, Hans __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: New soldering station needed
Your mileage may very but I use the T18-BR02 tip for both SMD and through hole soldering. I'd planned on buying more tips but frankly I'm 100% satisfied with this tip. I should probably get a larger tip though for soldering connectors and such. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Fwd: Re: T/R switching problem
Phil: I would keep a close eye on this. I had a bad issue with attenuation and rectification using the K3-KPA500 ..only existing when the amp was on and in operating mode. It turned out to be a bad capacitor in one of the low pass filters. Sent it back to Elecraft ..and fixed quickly. I'd give them a call. 73 Steve KL7SB -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Toby Pennington Sent: Wednesday, March 26, 2014 9:01 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] Fwd: Re: T/R switching problem The only time I have experienced some amount of attenuation on receive is when I was using some other amplifier besides the KPA 500. I found I had to totally disconnect all my cabling between the amplifier and the rig. Since I am using the K line completely, trying to use an external amp other than the KPA 500 can be done without disconnecting all the cabling, but on receive you will experience attenuation of the receive signals. To have full receive using another brand of amp, you will have to remove the data transfer cabling between the rig and amp. I hope I have this right, as it has been some time since I experimented with using an amp with more output than the KPA 500. Toby K4NH Original Message Subject:Re: [Elecraft] T/R switching problem Date: Wed, 26 Mar 2014 06:53:18 -0700 From: Phil Hystad phys...@mac.com To: Mike K2MK k...@comcast.net CC: elecraft@mailman.qth.net I have a similar (close but not identical to symptoms below) problem with K3 receive attenuation. I do not have a SteppIR and this same problem occurred on more than one antenna (80-meter dipole, Traffie Hex Beam). My symptoms were that when I turned on the radio in the morning, the band per the display on the P3 was flat, virtually no visible signals. No matter as I was doing my morning reading with my coffee. Later, I went to the radio and there should have been some good activity on 20, 17, 15, 12, and 10. I did have signals but no where near as much as I think there should have been. I thought maybe the KAT500 was out of tune so I fooled with that, Xmitted tune and so on and no real change. I checked everything I could think of such as change in PRE setting (I was on PRE), Attenuation (no, was not), and so on. Finally, I tried the old computer programming trick, turn it off and turn it on again. When the K3 came back up the bands were crowded with signals. So, there was some significant attenuation going on but turning off (front panel switch only) the K3 and turning it back on fixed everything. Ideas, comments?? Oh, this has happened only that one time so far. 73, phil, K7PEH On Mar 26, 2014, at 4:14 AM, Mike K2MK k...@comcast.net wrote: Hi Jan, What is your antenna. There has been an ongoing thread on the SteppIR site regarding this identical problem with many types of transceivers, not just the K3. If you have a SteppIR antenna (any model) you should take a look at their Yahoo site. 73, Mike K2MK Jan Ditzian wrote I am having a problem with T/R switching in my K3. The symptom is that, after I transmit, the receive signals are sometimes very attenuated. This problem has gotten worse. At first, simply a quick tap on the PTT switch fixed everything, but now, at least on phone, I must make a brief additional transmission to get the receive to return. Today, the problem got worse, and sometimes I have to really fuss with things to get receive back. Here are some questions: 1. Is there a T/R relay in the K3, and does this sound like it is sticking, at least to the extent that it does not make good contact on receive? 2. Has anyone had the similar problem, and what was the solution? 3. If it is a relay, can it be replaced easily, or is this a return to Elecraft situation? 4. If it is simply a relay replacement, where is the relay located? Thank you, Jan, KX2A -- View this message in context: http://elecraft.365791.n2.nabble.com/T-R-switching-problem-tp7585979p7 585987.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to phys...@mac.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to w4c...@centurylink.net
Re: [Elecraft] Distortion
Hi Hans You seem to have a known problem - with a known fix: Weird behavior around 7185 kHz. It is due to interaction between the VFO and the PLL reference oscillator. Search for '7185' in my list http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_5502.html http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_5502.html and you will find some links that will help you. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Distortion-tp7586001p7586004.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Distortion
Hans, That sounds like the old WAOF (Weird At One Frequency) problem. That is the region where the PLL oscillator and VFO frequencies cross paths near 7185 kHz. See http://www.elecraft.com/Apps/Alert11_WAOF.html. Note that this alert refers to older version A K2s, you will not find C70 on your board. If this is your problem, the audio signals will sound rather like they are 'under water' If you have something different, then ask again. With a new K2 layout, that seldom happens, so check to be certain D16 is mounted flush with the board. In addition, the components mounted on the bottom of U4 (C88, RFC15 and C91) should have leads as short as possible - make certain they are connected to the correct pins. You may need to trim all leads in the vicinity of U4 so there is nothing that would act as an 'antenna'. 73, Don W3FPR On 3/26/2014 1:44 PM, Hans Elfelt Bonnesen wrote: K2 Audio Distortion. My otherwise flawless K2 # 7359 is found to have serious audio distortion problems on received and transmitted signals on 40 meter. The problem appears as soon as I go above 7171 kHz. On 7182 the problem makes SSB contacts impossible Lower frequencies do not suffer. Why ? I still haven’t checked the problem on other bands. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Distortion
Nice list you have, Sverre. My K2 (#380) didn't suffer from this malaise (I tested it as specified) but I've done most all the others. Most recent was the AF pot mod: No parts, but fussy work on the three main boards -- and well worth the effort! 73, Phil W7ox On 3/26/14, 11:48 AM, Sverre Holm (LA3ZA) wrote: Hi Hans You seem to have a known problem - with a known fix: Weird behavior around 7185 kHz. It is due to interaction between the VFO and the PLL reference oscillator. Search for '7185' in my list http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_5502.html http://la3za.blogspot.no/p/la3za-unofficial-guide-to-elecraft-k2_5502.html and you will find some links that will help you. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Distortion
Phil Wheeler-2 wrote Nice list you have, Sverre. Thanks! Since August last year I have updated the list (link in my signature field) and added several photos to make it easier to navigate. - Sverre, LA3ZA K2 #2198, K3 #3391, LA3ZA Blog: http://la3za.blogspot.com, LA3ZA Unofficial Guide to K2 modifications: http://la3za.blogspot.com/p/la3za-unofficial-guide-to-elecraft-k2.html -- View this message in context: http://elecraft.365791.n2.nabble.com/Distortion-tp7586001p7586007.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?
Just back up your configuration with the KX3 utility before you start, and for extra security write down your current refcal value. If you do somehow make a hash of the compensation procedure, you can simply restore your saved configuration to get back where you started. Even if you somehow didn't save your configuration, it is very simple to simply revert the compensation menu setting from CUSTOM back to STANDARD, and zero-beat your radio to the WWV carrier to reset your refcal. Of course, you should only do what you are comfortable with, but in my view (I finally got around to doing the procedure last weekend) it is a reasonably straightforward and nicely automated procedure that yields a big benefit for digital mode operation. The Elecraft team has done well with this one. 73, Matt VK2RQ On 26 Mar 2014, at 11:59 pm, Jack Chomley vk4...@gmail.com wrote: Tonight I have been experimenting on PSK31 at 3 watts and 5 watts. In my shack the OSC Temp is about 38 deg and transmitting my CQ call about every 60 seconds @ 3 watts takes the OSC Temp to 39 deg, on RX it drops back to 38 deg. At 5 watts it goes up to 41 deg, but immediately settles back to 38 deg. My question is, what would the estimated frequency change be, per degree of OSC Temp change? I am trying to work out the total freq shift between the start and the end of my PSK31 transmission. Now, I have not done the OSC temp compensation routine to my radio. Trying not to go down this road in case I make a hash of it :-) In closing, I will not be using WSPR or JT65 etc with this radio. 73, Jack VK4JRC Club.www.cqara.org.au Member WIA SARL ARRL GQRP #14392 QRPARCI #15068 VKQRP.#833 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to matt.vk...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 interface to Signalink USB question
Thanks everyone! Don, will this setup liven up the mic? Or is there a way to just switch to front panel mic input only when using SL USB? I mean I know I can set the menu option to fp mic. But if I didn't and SL USB keyed up the rig - my actual mic would be live, right? Slava Baytalskiy sla...@nullserv.com W2RMS On Mar 26, 2014, at 12:56 PM, Don Wilhelm w3...@embarqmail.com wrote: Slava, Yes, you should be able to use the front mic jack. Set the SignaLink for mic level output rather than line level (see the SignaLink documentation). Turn bias off for the front mic. It is feasible that you could feed the SignaLink into your audio rack, but it should not run through any of the conditioning mechanisms. If you do that, you would want to kill all other inputs to your audio rack and just run the SignaLink 'straight through' to the Line In on the K3. Whether that is possible or not depends on the capabilities of your mixer. 73, Don W3FPR On 3/26/2014 12:36 PM, Slava Baytalskiy wrote: Hello everyone! I have a Signalink USB box that I'd like to interface with my new K3. From what I understand the preferred connection method is via the rear Line-In/Out jacks, right? I am using those with my rack audio gear, though (xlr mic/EQ/mixer/etc). What would you guys suggest that I do? Can/should I use the front mic connector (it is the standard Kenwood 8-pin pinout, right?). Or is it possible to connect the Signalink inline with the audio stuff, between the rack and the K3? Also, I have a new LP-PAN with an E-mu 0404 sound card that I haven't connected yet. So I wonder if that can somehow be used for the Signalink. I also have an iPlus box (FYI). Thanks in advance for your suggestions and ideas! Slava Baytalskiy sla...@nullserv.com W2RMS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to w3...@embarqmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 interface to Signalink USB question
And one more question: what's this rj-45 type plug on the bottom of the front panel for? Anyone using it at all? Slava Baytalskiy sla...@nullserv.com W2RMS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 interface to Signalink USB question
Sal, that RJ-45 jack was used at the factory for programming purposes. It has no function outside of that. 73 de -- Ian Ian Kahn, KM4IK Roswell, GA EM74ua km4ik@gmail.com K3 #281, P3 #688, KPA500 #1468 HRD v5.x/6.0 Test Team -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Slava Baytalskiy Sent: Wednesday, March 26, 2014 5:03 PM To: d...@w3fpr.com Cc: Elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 interface to Signalink USB question And one more question: what's this rj-45 type plug on the bottom of the front panel for? Anyone using it at all? Slava Baytalskiy sla...@nullserv.com W2RMS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to km4ik@gmail.com --- This email is free from viruses and malware because avast! Antivirus protection is active. http://www.avast.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 interface to Signalink USB question
Slava, That all depends on whether you feed the SL USB through your mixer or go with the front panel mic. Through the front panel, set the mic select to the front mic and bias off. Use VOX and do not connect PTT from the SL USB and you will not have any PTT 'mistakes'. If you feed it through your mixer, then it all depends on your mixer and its controls - I don't know your full audio (nor PTT) setup, so I cannot comment. 73, Don W3FPR On 3/26/2014 5:00 PM, Slava Baytalskiy wrote: Thanks everyone! Don, will this setup liven up the mic? Or is there a way to just switch to front panel mic input only when using SL USB? I mean I know I can set the menu option to fp mic. But if I didn't and SL USB keyed up the rig - my actual mic would be live, right? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] T/R switching problem
Well, I have never had my K3 hooked up to any amplifier other than the KPA500. Before I got the KPA500 I did have a PW-1 but I sold that. Which reminds me, I should buy the new brick amp for the KX3. 73, phil On Mar 26, 2014, at 10:00 AM, Toby Pennington w4c...@centurylink.net wrote: The only time I have experienced some amount of attenuation on receive is when I was using some other amplifier besides the KPA 500. I found I had to totally disconnect all my cabling between the amplifier and the rig. Since I am using the K line completely, trying to use an external amp other than the KPA 500 can be done without disconnecting all the cabling, but on receive you will experience attenuation of the receive signals. To have full receive using another brand of amp, you will have to remove the data transfer cabling between the rig and amp.I hope I have this right, as it has been some time since I experimented with using an amp with more output than the KPA 500. Toby K4NH Original Message Subject: Re: [Elecraft] T/R switching problem Date: Wed, 26 Mar 2014 06:53:18 -0700 From: Phil Hystad phys...@mac.com To: Mike K2MK k...@comcast.net CC: elecraft@mailman.qth.net I have a similar (close but not identical to symptoms below) problem with K3 receive attenuation. I do not have a SteppIR and this same problem occurred on more than one antenna (80-meter dipole, Traffie Hex Beam). My symptoms were that when I turned on the radio in the morning, the band per the display on the P3 was flat, virtually no visible signals. No matter as I was doing my morning reading with my coffee. Later, I went to the radio and there should have been some good activity on 20, 17, 15, 12, and 10. I did have signals but no where near as much as I think there should have been. I thought maybe the KAT500 was out of tune so I fooled with that, Xmitted tune and so on and no real change. I checked everything I could think of such as change in PRE setting (I was on PRE), Attenuation (no, was not), and so on. Finally, I tried the old computer programming trick, turn it off and turn it on again. When the K3 came back up the bands were crowded with signals. So, there was some significant attenuation going on but turning off (front panel switch only) the K3 and turning it back on fixed everything. Ideas, comments?? Oh, this has happened only that one time so far. 73, phil, K7PEH On Mar 26, 2014, at 4:14 AM, Mike K2MK k...@comcast.net wrote: Hi Jan, What is your antenna. There has been an ongoing thread on the SteppIR site regarding this identical problem with many types of transceivers, not just the K3. If you have a SteppIR antenna (any model) you should take a look at their Yahoo site. 73, Mike K2MK Jan Ditzian wrote I am having a problem with T/R switching in my K3. The symptom is that, after I transmit, the receive signals are sometimes very attenuated. This problem has gotten worse. At first, simply a quick tap on the PTT switch fixed everything, but now, at least on phone, I must make a brief additional transmission to get the receive to return. Today, the problem got worse, and sometimes I have to really fuss with things to get receive back. Here are some questions: 1. Is there a T/R relay in the K3, and does this sound like it is sticking, at least to the extent that it does not make good contact on receive? 2. Has anyone had the similar problem, and what was the solution? 3. If it is a relay, can it be replaced easily, or is this a return to Elecraft situation? 4. If it is simply a relay replacement, where is the relay located? Thank you, Jan, KX2A -- View this message in context: http://elecraft.365791.n2.nabble.com/T-R-switching-problem-tp7585979p7585987.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to phys...@mac.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to w4c...@centurylink.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please
Re: [Elecraft] T/R switching problem
I have encountered this phenomenon on a number of occasions over the past 50 years. In my case, every time, the problem was an oxidized connection or relay contact. Transmitting a single dit would clear the problem (temporarily), but the condition would always reappear after a time, sometimes after only a few minutes, if no other action was taken. In most cases, lightly burnishing the connection or relay contact (by far the most common culprit...in my experience) would resolve the issue. 73, Bob -- Robert Redmon K5SM AMA 58073 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] OT: New soldering station needed
I agree with the long snoot, hi. I modified the longest one I had for a 45 degree bend so that I had a 1/4 inch approx length of horizontal tip to heat up several SMD leads at once. Seemed to help. Mel, K6KBE On Wednesday, March 26, 2014 3:21 PM, Josh Fiden j...@voodoolab.com wrote: If I wanted to be prepared for whatever comes along, I'd get a large and small chisel, plus small conical for SMD. For example: 5.2mm chisel T15-D52 1.2mm chisel T15-D12 0.2mm conical T15-BLL The long slender snoot on that conical makes it easier to see an SMD part underneath. The D24/2.4mm chisel is also nice if you want something big enough to hit a larger through hole tab, but you don't want to swap tips to get into a tight space. The colored sleeves are also nice. You can hot swap tips and the bright colors (orange, green, blue, etc) mean you can quickly grab the size you want without close inspection. Those are part# B321x, where x specifies the color. 73, Josh W6XU On 3/25/2014 6:14 PM, Phil Debbie Salas wrote: What tip or tips do you recommend? They have a 4mm chisel, a 5.2mm chisel, and a conical. Thanks, Phil – AD5X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to farrerfo...@yahoo.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] T/R switching problem
I have this problem occasionally on my sloping Vee for 40, 80, and 160, and I know it is in the antenna. The V is fed at the top of the tower with 450 ohm ladder line which connects to the antenna wires with copper split nuts. Corrosion has slowly occurred, and over time, the band gets very quiet. A single dit will fix it, and of course, if I continue to transmit such as in a contest, all is well. Getting it down to fix it is a serious PITA because of all the trees under it, and I don't know how much longer we're going to be here, so I live with it. YMMV. 73, Fred K6DGW - Northern California Contest Club - CU in the 2014 Cal QSO Party 4-5 Oct 2014 - www.cqp.org On 3/25/2014 8:09 PM, Don Wilhelm wrote: Jan, Before deciding it is a K3 problem, take a look at your antenna system coax. If you bought cables from DX Engineering in the past year, be aware that they had a crimping problem that could result in the bhavior that you are experiencing. A transmit 'sets it straight', but the RX diminishes after that. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [Elecraft_K3] Re: New Elecraft Product: K3/0-Mini Remote Front Panel
Yes, it is possible, and we're working on a special cable for this. 73, Wayne N6KR Now THAT I am interested in, I'd be interested in a cable of about 8 - 10 Metres in length. Then my K3 can live in it's spot in the back of my campervan and I could have the K3 Mini in the front so I can operate whilst mobile. I know of a few others that would be very interested in this, Gary, VK1ZZ would be one of em. :) Many thanks Jeff Cochrane VK4XA - Jeff Cochrane - VK4XA Innisfail, QLD, Australia. No longer an Elecraft Owner :( (But I now have a campervan with an engine that runs!) :) -- View this message in context: http://elecraft.365791.n2.nabble.com/New-Elecraft-Product-K3-0-Mini-Remote-Front-Panel-tp7585683p7586017.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Elecraft price increase coming in April.
Hi, This is an early notice for everyone that we will be increasing prices slightly on our radios and other products before the end of next month (April). As always, any orders placed before that point will be honored at today's pricing. Please resist the urge to ask our sales or support staff for more specifics on what prices are changing and the exact date for the changes, as they do not have any additional information. We are still reviewing our complete product line to determine where we need to change pricing, so I can't be more specific on which specific products will increase in price, or by how much. (We've been absorbing a lot of supplier cost increases over the past two years.) As always, we strive to keep these changes as small as possible, and to absorb cost increases where ever possible. 73, Eric elecraft.com _..._ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K2] Miscellaneous Accessory Board Project
For those whom have requested the PCB previously offered, I am placing an order for two more sets of boards this evening. I will keep all requesters on the list and will notify you when I have received the boards, about 1 week. 73 Thanks, Tom KG7CFC I would be interested in one of these boards also. 73, George NC5G -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Miscellaneous-Accessory-Board-Project-tp7585246p7586019.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Has the KX1 changed in 5 years?
Greetings all. I recently fell in love with QRP CW and have outgrown my TenTec R4020. I'm an engineer and use a soldering iron a lot at work, and I'm busy these days so a build project doesn't excite me. right now. I have a lead on a 5 year old KX1 and was wondering if they've changed much in 5 years. I'm fine with little mods and tweaks but want to make sure it isn't dramatically different from the new ones. Have they changed much in 5 years? Thanks! Bob __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?
Thanks everyone for the ideas.I have the XG50 for the job. Doing the Temp Comp routine hopefully will improve the reliability of decoding PSK31 directly with the KX3 and my HCT. Yes, will write down REFCAL, save config thanks Matt. 73, Jack VK4JRC Club.www.cqara.org.au Member WIA SARL ARRL GQRP #14392 QRPARCI #15068 VKQRP.#833 On 27 Mar 2014, at 6:51 am, Matt VK2RQ matt.vk...@gmail.com wrote: Just back up your configuration with the KX3 utility before you start, and for extra security write down your current refcal value. If you do somehow make a hash of the compensation procedure, you can simply restore your saved configuration to get back where you started. Even if you somehow didn't save your configuration, it is very simple to simply revert the compensation menu setting from CUSTOM back to STANDARD, and zero-beat your radio to the WWV carrier to reset your refcal. Of course, you should only do what you are comfortable with, but in my view (I finally got around to doing the procedure last weekend) it is a reasonably straightforward and nicely automated procedure that yields a big benefit for digital mode operation. The Elecraft team has done well with this one. 73, Matt VK2RQ On 26 Mar 2014, at 11:59 pm, Jack Chomley vk4...@gmail.com wrote: Tonight I have been experimenting on PSK31 at 3 watts and 5 watts. In my shack the OSC Temp is about 38 deg and transmitting my CQ call about every 60 seconds @ 3 watts takes the OSC Temp to 39 deg, on RX it drops back to 38 deg. At 5 watts it goes up to 41 deg, but immediately settles back to 38 deg. My question is, what would the estimated frequency change be, per degree of OSC Temp change? I am trying to work out the total freq shift between the start and the end of my PSK31 transmission. Now, I have not done the OSC temp compensation routine to my radio. Trying not to go down this road in case I make a hash of it :-) In closing, I will not be using WSPR or JT65 etc with this radio. 73, Jack VK4JRC Club.www.cqara.org.au Member WIA SARL ARRL GQRP #14392 QRPARCI #15068 VKQRP.#833 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to matt.vk...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Has the KX1 changed in 5 years?
Bob, I had #13 (Beta tester!) IIRC. the only major change was the number of turns on one of the toroids if you're into 80M From the KXB3080 Errata notes: Your KX1 must have an 18-turn inductor installed at L3 before using it on 80 meters. If L3 in your KX1 has only 6 turns, see “KX1 Builder’s Alert, Modifying Final Amplifier Choke L3”for instructions on how to rewind the inductor. From: cockpit...@aol.com I have a lead on a 5 year old KX1 and was wondering if they've changed much in 5 years. I'm fine with little mods and tweaks but want to make sure it isn't dramatically different from the new ones. Have they changed much in 5 years? Dave G.KK7SS Richland, WA. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Has the KX1 changed in 5 years?
Not that I know of Bob. After the initial KX1, they brought out the 30m add-on which I have and the 30/80m add-on which I don't have [life at my age isn't long enough for QRP with short antennas on 80m :-)]. Mine is S/N 678 I think, it's buried in my SOTA bag and I don't have time to go look, but I know it's 3-digits in the 6 hundreds. Like the K1 and K2, these are fairly mature products, not many changes, and they work. I do SOTA activations with my K2, and sometimes the KX1, I usually work the Spartan Sprint with my KX1 when it's warm enough to be on the deck. I think you will like the KX1, with the LiPoly battery, the integral paddle, and earbuds, mine comes in at just under 0.62 lbs. Important for the Spartan. :-) 73, Fred K6DGW - Northern California Contest Club - CU in the 2014 Cal QSO Party 4-5 Oct 2014 - www.cqp.org On 3/26/2014 7:36 PM, cockpit...@aol.com wrote: Greetings all. I recently fell in love with QRP CW and have outgrown my TenTec R4020. I'm an engineer and use a soldering iron a lot at work, and I'm busy these days so a build project doesn't excite me. right now. I have a lead on a 5 year old KX1 and was wondering if they've changed much in 5 years. I'm fine with little mods and tweaks but want to make sure it isn't dramatically different from the new ones. Have they changed much in 5 years? __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?
The extended temp compensation is mostly about transmit frequency stability. It might make some difference in decoding PSK31 as the rig cools down, but I would expect that to be a smaller effect. wunder K6WRU On Mar 26, 2014, at 7:39 PM, Jack Chomley vk4...@gmail.com wrote: Thanks everyone for the ideas.I have the XG50 for the job. Doing the Temp Comp routine hopefully will improve the reliability of decoding PSK31 directly with the KX3 and my HCT. Yes, will write down REFCAL, save config thanks Matt. 73, Jack VK4JRC Club.www.cqara.org.au Member WIA SARL ARRL GQRP #14392 QRPARCI #15068 VKQRP.#833 On 27 Mar 2014, at 6:51 am, Matt VK2RQ matt.vk...@gmail.com wrote: Just back up your configuration with the KX3 utility before you start, and for extra security write down your current refcal value. If you do somehow make a hash of the compensation procedure, you can simply restore your saved configuration to get back where you started. Even if you somehow didn't save your configuration, it is very simple to simply revert the compensation menu setting from CUSTOM back to STANDARD, and zero-beat your radio to the WWV carrier to reset your refcal. Of course, you should only do what you are comfortable with, but in my view (I finally got around to doing the procedure last weekend) it is a reasonably straightforward and nicely automated procedure that yields a big benefit for digital mode operation. The Elecraft team has done well with this one. 73, Matt VK2RQ On 26 Mar 2014, at 11:59 pm, Jack Chomley vk4...@gmail.com wrote: Tonight I have been experimenting on PSK31 at 3 watts and 5 watts. In my shack the OSC Temp is about 38 deg and transmitting my CQ call about every 60 seconds @ 3 watts takes the OSC Temp to 39 deg, on RX it drops back to 38 deg. At 5 watts it goes up to 41 deg, but immediately settles back to 38 deg. My question is, what would the estimated frequency change be, per degree of OSC Temp change? I am trying to work out the total freq shift between the start and the end of my PSK31 transmission. Now, I have not done the OSC temp compensation routine to my radio. Trying not to go down this road in case I make a hash of it :-) In closing, I will not be using WSPR or JT65 etc with this radio. 73, Jack VK4JRC Club.www.cqara.org.au Member WIA SARL ARRL GQRP #14392 QRPARCI #15068 VKQRP.#833 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to matt.vk...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to wun...@wunderwood.org -- Walter Underwood wun...@wunderwood.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Has the KX1 changed in 5 years?
I believe the only major change is addition of the 3080 option (originally only a 30 option) and some new functions (which you can add by getting firmware 1.02 (?)). You can find the latest KX1 manual here http://www.elecraft.com/K2_Manual_Download_Page.htm#KX1 and see. You may have the latest firmware, Bob. 73, Phil w7ox On 3/26/14, 7:36 PM, cockpit...@aol.com wrote: Greetings all. I recently fell in love with QRP CW and have outgrown my TenTec R4020. I'm an engineer and use a soldering iron a lot at work, and I'm busy these days so a build project doesn't excite me. right now. I have a lead on a 5 year old KX1 and was wondering if they've changed much in 5 years. I'm fine with little mods and tweaks but want to make sure it isn't dramatically different from the new ones. Have they changed much in 5 years? Thanks! Bob __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] 2 meter EME considerations with the K3
Ed Thanks for your feedback on end to end signal EIRP rules of thumb between JT65 and CW. The frequency stability and other JT65 mode considerations are where I need the trade offs and it's nice to see it can be done with under 10 watts of drive to an amplifier in Class C. That makes it much easier than I'd thought. However, greater frequency stability is something I'll be working to achieve. I believe better frequency stability between the two ends in QSO reduces time to complete a contact. The K3 with it's internal transverter and new external 10 MHz reference option make staying within 2 or 3 Hz possible. The external reference stabilizes both the K3 and the K3's internal transverter LO. Where as, the separate XV144 with it's own TCXO option for the LO make it possible to stay within 10 Hz or so if the K3 has its own TCXO option. With the XV144, temperature change during continuous 10 watt output on J65 it will cause some drift with dissipation heat The manual says output must be run backed off to 10 watts or less output with the 100% duty cycle of JT65 transmission. So, a high gain amplifier that allows the least amount of drive from the XV144 makes it more stable. I can get to 700w power level by building a solid state amp using one of the Freescale LDMOS devices like the MRFE6VP61K25H. They have high gain around 20 dB and can be biased for near class C or AB depending on the mode operation. I already have a 50 volt supply. The array being x-pol yagi with 15.5 dB gain and with separate vertical and horizontal feed lines using low loss hard line gives me options of H, V, and x-pol use. This gives me all polarity choices depending on what seems to work based on conditions. Meteor scatter experimentation will be another area of interest. All the other inputs from you and others are appreciated too. Thanks 73, John, W1QS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K3 interface to Signalink USB question
SignaLink is mono, I believe. LP-PAN requires stereo. Larry N8LP On 3/26/2014 10:39 PM, elecraft-requ...@mailman.qth.net wrote: Date: Wed, 26 Mar 2014 12:36:32 -0400 From: Slava Baytalskiysla...@nullserv.com To:Elecraft@mailman.qth.net Elecraft@mailman.qth.net Subject: [Elecraft] K3 interface to Signalink USB question Message-ID:e5f454b4-cd14-493f-b9a7-2dd8be8e4...@nullserv.com Content-Type: text/plain; charset=us-ascii Hello everyone! I have a Signalink USB box that I'd like to interface with my new K3. From what I understand the preferred connection method is via the rear Line-In/Out jacks, right? I am using those with my rack audio gear, though (xlr mic/EQ/mixer/etc). What would you guys suggest that I do? Can/should I use the front mic connector (it is the standard Kenwood 8-pin pinout, right?). Or is it possible to connect the Signalink inline with the audio stuff, between the rack and the K3? Also, I have a new LP-PAN with an E-mu 0404 sound card that I haven't connected yet. So I wonder if that can somehow be used for the Signalink. I also have an iPlus box (FYI). Thanks in advance for your suggestions and ideas! Slava Baytalskiy sla...@nullserv.com W2RMS -- __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX3 OSC Temp And Freq Drift Relationship?
RE: The extended temp compensation is mostly about transmit frequency stability. It might make some difference in decoding PSK31 as the rig cools down, but I would expect that to be a smaller effect. To elaborate a bit more on wunder's comment, it is about frequency stability as related to temperature changes. The reason it appears to affect transmit more than receive is because the KX3 power amplifier transistors generate lots of heat during transmit, heating up the SI570 oscillator. The SI570 also generates heat, but generates the same amount of heat during transmit and receive (it doesn't know the difference), so it tends to add to the heat during transmit, and slow the cool-down during receive. The relatively poor heat rejection capability of the KX3's enclosure (designed for TFR, not heat rejection) figures into that mix as well. So, fast frequency drift during transmit, slower drift during receive. I've used SI570's for a number of years on my SDR projects, but have always had the luxury of being able to isolate them from the radio's final amplifier transistors, and any other heat source. They have therefore been very frequency stable once their temperature levels off following power-up. The tight packaging of the KX3 doesn't allow that. From the reports so far, it looks like Elecraft's look-up table approach is pretty effective at compensating. Mark KE6BB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
