Re: [Elecraft] Accessory Line Protection
Don, Sorry, but I just got back... I'll send a reply tomorrow, when I can. I do appreciate the information. 73,Mike W0IH Date: Thu, 13 Jun 2013 16:36:48 -0700 From: ml-node+s365791n7575214...@n2.nabble.com To: mfros...@msn.com Subject: Re: Accessory Line Protection Mike, If you have the 74154 inputs connected to the K3 band data outputs, nothing more should be required. The 74154 should adequately isolate the inputs from whatever you have connected to the output side of the decoder IC. I don't even know if the capacitors are required (or desirable), although since the band data outputs are not dynamically changing, they should make no difference. If you have anything else connected to the K3 band data outputs (in parallel with the 74154), then that may be a different consideration, but you did not mention anything of that nature. The KPA500 should not cause a problem. If you have trouble with the KPA500 band selection, try removing the capacitors and see if that cures the problem. 73. Don W3FPR On 6/12/2013 7:27 PM, w0ih wrote: Well, I got a bit lazy and tired of changing antennas to my K3 so I built a system to automatically change antennas as I switch bands. What I'm trying to accomplish is to be able to control my station remotely over the internet (I use TeamView which includes audio). I'm driving a 160 meter dipole, 80 meter dipole (my own design, tunes from 3.5 to 4.0), 60 m dipole, 40 meter tap off the boom of my beam, TH11DX beam and a 6m vertical (2m and 440 as well). Basically what I did was to build a remote antenna switch (from an April 2005 QST article) built from a FarCircuits.com kit (circuit board and relays, ~$40) as the remote switch. I have a single coax coming the last 50 feet from the base of my tower up to the shack. This remote switch (grounds the antennas when not in use) is driven by a circuit that I build using a VERY old chip from my junk box, a 74154 BCD to decimal line output chip (decodes the K3 Accessory Band outputs 0-3 to a 1 of 16 line output). I also have a manual setting that allows me to switch the antennas with a rotary switch - 1 to 6, so I can use it with my KX3 as well. So, my question, I have tapped off the Accessory output lines on the back of the K3 into the antenna controller to the 74154 chip. I have some .01 uf capacitors for filtering the lines. But my question is, do I need any other protection for the lines coming from the output of the K3 to my controller? The outputs of the 74154 drive a set of 6 5 volt relays which drive the lines (and LEDs) down to the remote antenna switch board. The cable from the K3 Accessory plug to the controller is shielded and grounded to the chassis. There are 6 lightning arrestors on each of the coax inputs (copper strapped together and ground to the base of the tower). The six control lines from the controller to the remote antenna switch are also shielded and grounded (12 volts to drive the relays). But am I missing anything in protecting the K3 lines to the controller? I've checked the schematic of the K3 but can't find much on the outputs for protection. Incidentally, I do also have a KPA500 that is also connected to the system Accessory output. Mike W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/Accessory-Line-Protection-tp7575169.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:[hidden email] 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:[hidden email] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html If you reply to this email, your message will be added to the discussion below: http://elecraft.365791.n2.nabble.com/Accessory-Line-Protection-tp7575169p7575214.html To unsubscribe from Accessory Line Protection, click here. NAML -- View this message in context: http://elecraft.365791.n2.nabble.com/Accessory-Line-Protection-tp7575169p7575221.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
[Elecraft] Accessory Line Protection
Well, I got a bit lazy and tired of changing antennas to my K3 so I built a system to automatically change antennas as I switch bands. What I'm trying to accomplish is to be able to control my station remotely over the internet (I use TeamView which includes audio). I'm driving a 160 meter dipole, 80 meter dipole (my own design, tunes from 3.5 to 4.0), 60 m dipole, 40 meter tap off the boom of my beam, TH11DX beam and a 6m vertical (2m and 440 as well). Basically what I did was to build a remote antenna switch (from an April 2005 QST article) built from a FarCircuits.com kit (circuit board and relays, ~$40) as the remote switch. I have a single coax coming the last 50 feet from the base of my tower up to the shack. This remote switch (grounds the antennas when not in use) is driven by a circuit that I build using a VERY old chip from my junk box, a 74154 BCD to decimal line output chip (decodes the K3 Accessory Band outputs 0-3 to a 1 of 16 line output). I also have a manual setting that allows me to switch the antennas with a rotary switch - 1 to 6, so I can use it with my KX3 as well. So, my question, I have tapped off the Accessory output lines on the back of the K3 into the antenna controller to the 74154 chip. I have some .01 uf capacitors for filtering the lines. But my question is, do I need any other protection for the lines coming from the output of the K3 to my controller? The outputs of the 74154 drive a set of 6 5 volt relays which drive the lines (and LEDs) down to the remote antenna switch board. The cable from the K3 Accessory plug to the controller is shielded and grounded to the chassis. There are 6 lightning arrestors on each of the coax inputs (copper strapped together and ground to the base of the tower). The six control lines from the controller to the remote antenna switch are also shielded and grounded (12 volts to drive the relays). But am I missing anything in protecting the K3 lines to the controller? I've checked the schematic of the K3 but can't find much on the outputs for protection. Incidentally, I do also have a KPA500 that is also connected to the system Accessory output. Mike W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/Accessory-Line-Protection-tp7575169.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] Remote K3, the Easy way...
*Remote Control* I do a limited amount of travel, but when away from home, I like to be able to operate my K3 on the ham bands, and sometimes find that it gets a bit complicated getting things setup to operate. I’ve tried Ham Radio Deluxe and had mixed success getting connected up remotely. The biggest problem is the need to know your IP address (you can use DynDns or No-Ip). Plus, you still need to get the audio setup and running. However, I’ve found what seems to be a simpler process and allows for some added benefits. *Remote Control Computer Software using Team Viewer* To start with, I’m using TeamViewer which is free for non-commercial use. http://www.teamview.com http://www.teamview.com This is a computer remote control application that allows you to log into another computer and view the desktop and control the computer. The added benefits of TeamViewer is that it does not require you to know your base station computer IP address, and also includes a VOIP (Voice Over IP) so that you don’t need to start up a separate voice application like Skype. When setting up, you just need to learn a few things, like when starting up the VOIP, you need to enable the Voice-Over-IP and un-mute both the local and remote microphones (there may be a setting to do this by default, but I haven’t found it yet). I use an inexpensive computer headset with a microphone and get very good audio reports. There are more advantages to this where you can see your full remote desktop applications, as I’ll point out later. Incidentally, this will require that you keep your base station computer on all the time. I turn off the monitor, it’s not needed. If you’re a bit more ambitious, you may want to investigate using “Wake On Lan” for your computer, but again, this is more complicated, but you could save this step until later if you feel you need it. *Power Up the AC and Rig Control Enable* The next thing that you need to figure out is if you want to power your radio on and off remotely. I happened to have a control that I can use to turn on an AC power strip through a 15 amp AC relay. I modified a standard AC strip by adding a cable from the AC black wire to go up to the relay and then back down to the AC strip. Turning on the relay turns on the AC for my 12v power supply and my rotor control.This same control has a second relay that allows making a connection to the ACC2 connector on the K3 to remote power up the rig by pulling Pin 8 to Pin 5 (Gnd) for a short period of time to turn on the K3. Reference page 18 of the K3 manual for this. To power it off, you need to send a serial command to the rig from your K3 control software. There are other options to allow relay control through the computer. Simply do an on-line search for “usb relay” and you’ll come up with a number of options, for as low as $30. You should be able to work with a 10 amp, 120 volt relay to power your rig and a few light peripherals. The application that I wrote for the AC power strip also has a timeout, so that if I lose the connection, it will automatically turn off the rig after some period of time. You might also consider another relay that would trigger the PTT line and force a 5 to 10 minute timeout in case you lose the internet connection. *Remote K3 Control using NO5W software:* The K3 will of course need to be connected to the computer through the serial port. The connection that you used for updating your K3 firmware is the normal connection that is used for firmware updates. As I mentioned before, you can use Ham Radio Deluxe, however, I found that the CQX Client software available at http://www.no5w.com http://www.no5w.comto be easier to learn and use. The software package free and is intended for mobile contest logging (and seems very nicely suited for this task, interfacing with a GPS) but the thing that I like so well, is that once you connect up to your K3, there is a functional K3 application (by clicking “More” button in the upper center of the application) that allows you to control the K3 in a way that is very user friendly. We’re lucky that Chuck is such an avid K3 fan! For some examples: http://www.no5w.com/CQxK3RemoteKit.html http://www.no5w.com/CQxK3RemoteKit.html Quick Start Reference: http://www.no5w.com/Documents/QuickStartForK3Testing.pdf http://www.no5w.com/Documents/QuickStartForK3Testing.pdf Basically, it has an operational picture of the K3 with the controls activated so that each one works with the K3 using the same “tap” and “hold” features that you’re used to, including the Power switch. For remote operation, to turn the rig on, you pulse a set of contacts on the K3 ACC2 connector and the rig powers up. To turn it off, you press the “Power” button on the K3 application. Frequency control is pretty simple. The normal control uses the Up/Dn keys in conjunction with the resolution radio buttons just below the tuning knob. There’s an added feature using the
Re: [Elecraft] Bencher paddle and KX3
Sorry no one has replied back to you sooner, but I do use a Ben her Padle with my KX3 and it works great. I am not sure what cable it comes with from the factory, but the tip and ring are the dot and dash. Can be hooked up with no problem. Mike, W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/Bencher-paddle-and-KX3-tp7569298p7570304.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] KX3 - Balun
Steve, I was intrigued by the use of the BNC connector on the balun enclosure. I had never thought of that. I was just going to use a short coax cable between the KX3 and my new home-brew balun. I built a balun a couple weeks ago using a 1x2x3 box from Radio Shack ($3) and a T130-2 core and #18 gauge magnet wire off ebay or under $10. I wanted something to match a higher impedance of a W3EDP antenna, so I used a balun design by W2FMI using 4 wires (essentially two 4:1 baluns) on the core and tapped for 16:1, 9:1 and 4:1 (I also tapped off the half coil sides for 2:1, 6:1 and 12:1 (approx). I used a RadioShack 6 position rotary switch ($3). I then marked the switch positions as 100, 20, 300, 450, 650 and 800. Input is a BNC (female) and output is a pair of banana sockets. It was a bit of a tight fit, but seems to work out OK. Testing with an MFJ259B and rf voltmeter shows a progression of voltage output as I switch through the positions. I wanted to use the balun for a W3EDP antenna (http://www.zerobeat.net/g3ycc/w3edp.htm) so I need a higher impedance output. I have another version of the same balun that I built using an Amidon 2kw core, but it was too large to carry around for the KX3 in my portable case (I use an old video camera case that carries everything). The larger version of the balun worked just fine when I used it with the KX3 and internal tuner. Just change impedance tap positions until I get a good match with the tuner. I haven't actually tried the new balun yet though. I may modify it to use the BNC connector like you have implemented. I have some pictures, but not sure where to upload them to. Mike W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-Balun-tp7561948p7562019.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] KX3 - 1:1 balun
Steve, 1. I've seen baluns made with insulated wire, I don't think that it makes any difference. http://www.collegearc.com/index.php?option=com_contentview=articleid=165:building-a-current-baluncatid=77:technical 2. I would keep the coax between the rig and the balun short. There could be some very high SWR's on that piece of coax. You could try to design the balun box to connect directly to the rig output, but I can't see where a short piece would make that much difference. (I'm assuming that you have the internal tuner on the KX3.) 3. As for the triple ratio balun designs, I built a balun recently using an Amidon kit. The kits typically come with a spec sheet that has about 8 different designs. You can also look up the designs in the ARRL Handbook. The design that I used has a 200, 450 and 800 ohm output tap and it's also possible to tap at other ratios (1.5:1 to 16:1). I plan to use it with a W3EDP antenna design. Mine is a 2kw core, but you could easily adapt it to a smaller core. If I'm not mistaken, you have KX3 SN 687, I have 688... Mike W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-1-1-balun-tp7559405p7559411.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] Tune by 0.1KHZ
Thanks, Wayne. I figured there was some way. I'm having a great time learning to use the KX3 and all the features. I especially like the Menu feature of holding the Menu key for 3 seconds to access the menu help. Mike W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/Tune-by-0-1KHZ-tp7559042p7559091.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] Tune by 0.1KHZ
Am I missing something? I'm trying to tune the VFO by 0.1 of KHZ. Using the KHZ key, or Rate key, I can tune by 1Khz, 0.01 KHZ or 0.001 KHZ (1 HZ). But I can't find a way to tune by a tenth of a KHZ, like I'm used to on my K3. Mike W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/Tune-by-0-1KHZ-tp7559042.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 Frequency Shift
A couple weeks ago, I was on 40 meters with a group of friends, and one of the guys (likes everyone on frequency ;-) suggested that I was off. I finally got around to checking the K3 last week and found that it was off by about 260 Hz from what it should have been. I rechecked the calibration (against WWV, per the manual instructions) and the reference oscillator had not changed from the original setting (I had it marked down in the manual from when I first calibrated it). I had to move it by 260 Hz to get it to zero beat WWV. Anyone have any idea why it should shift frequency? I can't say that I'm terribly concerned, more curious about it. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Frequency-Shift-tp7510059.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] AM mode added to the KX3 (etc.)
Wayne, It sounds like you're having fun with your new toy, putting all the pieces together. I'm very jealous of you. You have a job (where I assume that you get paid) doing exactly what you love to do). I have a son-in-law that is a climber and he sells and markets climbing equipment. My daughter is a photographer, doing what she loves as well. There is no better job than doing what you love to do! Keep having fun with my new radio (whenever it comes!..) Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/AM-mode-added-to-the-KX3-etc-tp7446407p7485987.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] K3 Using IC-SM5 Mic
Barry, K8LEF contacted me off line with a solution that worked. He is using an Icom IC-SM5 microphone as well. Solution was to bypass the internal microphone amplifier. Remove the bottom cover from the mic and disconnect the red (pink?) wire coming from the mic (from the Pad marked ECM+) and disconnect the white wire from the incoming cord (from the pad marked OUT). Solder these two wires together and insulate the connection so it doesn't short to ground.You do need to turn on the Bias for the electret mic. Set it for FP.L bias. Mic gain works great around 20 to 25. The PTT line does need to be moved from pin 2 to pin 6 to get the PTT to work. Hope this helps anyone else searching for a similar solution. Thanks Barry! Mike W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Using-IC-SM5-Mic-tp6764918p6769967.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 Using IC-SM5 Mic
I'm trying to get my Icom IC-SM5 mic to work with the K3. I've setup the FP:L Bias on the K3 and there is 4.98 volts on Pin 1 of the K3 mic connector. No output from the rig at all (varied the pot on the bottom of the mic and the rig mic gain). I would think that 5v should be sufficient for the SM5 mic. I tried putting in a 1k resistor from pin 6 (8v) to a 2.2uf cap, but then I just get feedback (full output) into a dummy load. Anyone have any ideas? Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Using-IC-SM5-Mic-tp6764918p6764918.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] Confusion on Roofing Filters
Wayne, Thanks for the very prompt reply last week to my query. So now I have another question concerning roofing filters. Will the KX3 use the same roofing filter series as the K3? I added a 2.1 kHz filter in my K3 and found it very effective (after a bit of learning!). Since then, I've wanted to upgrade the 5 pole filter that I have in my K3 to an 8 pole. Can I put the 5 pole that I pull from the K3 into the KX3? Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Confusion-on-Roofing-Filters-tp6708928p6765692.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] Confusion on Roofing Filters
I'm a bit confused on the specifications of the roofing filters on the KX3. Will there be a roofing filter that is standard with the KX3, like the K3, or are you required to buy at least one as an option? Are the roofing filters in the same format as for the K3, or is it a different setup? Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Confusion-on-Roofing-Filters-tp6708928p6708928.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] 25% off code for KE7X K3 Book
I ordered mine last Wed, and it arrived on Monday of this week, 5 days. Mike W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/25-off-code-for-KE7X-K3-Book-tp6627791p6631415.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] KXw with Bluetooth?
One of the things that I'd like to see on a rig is a bluetooth headset connection for the mobile setup. I've tried a Jabra transmitter (from a phone) and a BlueParrot headset, but had too many problems with the Jabra transmitter not connecting. The headset has noise canceling and worked GREAT (including with my noisy convertible). Used it both with VOX and a remote PTT line. It's nice in a mobile setup to not have to have so many cables. Also handy in the shack. I keep hoping that there would be a rig with bluetooth built in along with a PTT line... (hint). Might open a new market for headsets with PTT. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/KXw-with-Bluetooth-tp6631444p6631444.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] KE7X Book Discount
I used the discount code JULYBOOKS11 last evening and it worked for a 20% discount on the K3 book. Thanks Fred. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/KE7X-Book-Discount-tp6606579p6606579.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] Battery Charger Voltage High?
My question is, do you have a 12 volt battery in the circuit with the charger. Probably not, if the voltage is running at over 15 volts. Chargers are made to run with a battery connected, which would drop the voltage to about 14.4 volts while charging, no higher. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Battery-Charger-Voltage-High-tp6408064p6409516.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] P3 visualizing local noise
I had a similar problem not too long ago with a noise that was drowning out lots of the 75 meter band. I had the LP-Pan at the time (I have a P3 now). There is a broadcast station several miles from here and the noise made that harmonic so much worse!! Tracked it down to a cheap Macbook laptop power supply from China. I took the cord off that was OK and put it on the original Mac supply (which is clean) and it works great. Moral is don't buy cheap laptop supplied off Ebay. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-visualizing-local-noise-tp6225996p6229521.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] Receiver Damage from another Close Station?
I may have to build a circuit to add some protection. But I'm not sure where I add it in. I want it in the receive line, but not in the transmit line. Is there somewhere in the K3 that I can tap off to limit the input signal? Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Receiver-Damage-from-another-Close-Station-tp6083308p6088515.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] Receiver Damage from another Close Station?
My next door neighbor is a ham and recently upgraded to a Icom 7700, 200 watt. The antennas for my K3 are pretty close to his. I have a set of dipoles (160, 75, 60 that share a common feedline) that are about 30 feet off one leg from the neighbor's HyTower (75 thru 10 full size vertical). I have a TH11DX up at 50 feet (boom is loaded for 40 meters also, separate feedline) and he has a TH5DX at very close to the same level, directly east of my tower, about 100 feet away. I have a Heathkit SB 220 amp (2 kw input?). Neighbor runs barefoot for now. So, my question is, do I need to be concerned about damage to either rig? I'm assuming that we can't operate the same bands at the same time. Our operating schedules seem to be very different for now. But I'm wondering if there could be input damage from one operating on any band, even if the rig is off. I was wondering if the K3 input is grounded through a relay when turned off, and similarly on the 7700. Any thoughts? Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Receiver-Damage-from-another-Close-Station-tp6083308p6083308.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] For Sale: LP-PAN and Quartet Sound Card.
Sold. -- View this message in context: http://elecraft.365791.n2.nabble.com/For-Sale-LP-PAN-and-Quartet-Sound-Card-tp5994778p6002836.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] For Sale: LP-PAN and Quartet Sound Card.
For Sale: LP-PAN and the Quartet Sound Card (192 Khz) with Cables. $250. Includes shipping CONUS. Mike W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/For-Sale-LP-PAN-and-Quartet-Sound-Card-tp5994778p5994778.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] Ref Osc calibration question
I noticed that when I went to AM-S (AM Sync, AutoTracking), that the frequency showed: 10.000.010 So, I figure that the Reference Oscillator was off a bit. So I tweeked the oscillator slightly until the frequency showed 10.000.000 when I when out of the Config Menu. Is there anything wrong with this logic? I couldn't seem to hear beat oscillator when I get close to the 10 Mhz signal to adjust it by the manual. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Ref-Osc-calibration-question-tp5975587p5975587.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] Xmit, Rcv Equalizer on K3 Utility
FYI, I got a reply from Sam (and several others) who suggested using the K3_EZ Utility. http://home.roadrunner.com/~n2bc/SW.htm Works Great! Thanks! Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Xmit-Rcv-Equalizer-on-K3-Utility-tp5597538p5601442.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] Xmit, Rcv Equalizer on K3 Utility
One thing that I have a somewhat difficult time with is getting the transmit and receive equalizers setup. It's a bit cumbersome to setup the equalizers through the RX EQ and TX EQ menus on the rig. I would be very helpful to have the equalizers on the K3 Utility in the form of a normal PC equalizer, with sliders for each of the 8 bands in a graphical form. While I'm dreaming, it would also be nice to have several memories that can be saved and restored for different setups (DX Narrow, BroadBand, etc.). I searched through the archives but didn't find this suggestion anywhere. Mike -- View this message in context: http://elecraft.365791.n2.nabble.com/Xmit-Rcv-Equalizer-on-K3-Utility-tp5597538p5597538.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] Question on K3 and LP-PAN
In looking at the LP-PAN and the connections, and what I've seen on the Flex radios, if you connect up an LP-PAN to the K3, the receive signals that you hear through the computer sound card output would NOT be going through the K3 roofing filters. The LP-PAN would of course give you the spectrum display, but not the signal processing from the K3. Any signals that come through the computer would be internally (to the computer) generated. Therefore, if you wanted to use the K3 system filters, you need to go through the K3 audio output. Is this true? Mike W0IH -- View this message in context: http://elecraft.365791.n2.nabble.com/Question-on-K3-and-LP-PAN-tp5430073p5430073.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
