[Elecraft] Mathematically challenged
I want to try and build an HF two Element Vertical Antenna for 20 meters. While there are several java scripted web-sites that will calculate and provide the physical measurements for the Driven, Reflector elements and spacing. I would like to use my MJF-259 to complete the fine tuning during construction and given that the frequency of the Driven element will not be the resonant frequency of the reflector. What would a good equation be to determine the resonant frequency for the reflector based on the desired frequency for the Driven element? Some references that I have found state the Reflector is approximately 4% longer than the Driven and the Director is 4% shorter, with element spacing 0.15 to 0.25 of the desired freq. I would like something a little more specific. Not that I can build it to spec or that the MFJ259 will be that accurate, I would still like to work with figures that provide something other than approximate. 73 K2CG Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Mathematically challenged
Joe, Making and working with a Phased array is also on my to-do list but I plan on building the phase box. For now I want to play with a vertical beam and using the planned operarting frequency times 1.05 gives me the resonant freq for the reflector provides me the information that I want to use when adjusting the reflector with my MFJ259. My thanks to everyone that replied. Being Mathematically Challenged (not really) I needed confirmation that I was on the correct path with my math :) Chuck G. Joe-aa4nn [EMAIL PROTECTED] wrote: Here's something to think about and it is doable and a no-brainer. Phase your two verticals. Make each vertical a 1/4 wave and space them 1/4 wave apart. Tune each one independently for your favorite frequency. Get the ComtekSystems Phased vertical box with associated feed lines and you are in business. With the phased verticals you can selectively switch for end fire in either direction in line with the verticals, plus you can switch select to transmit broadside to the two elements. Amazing results. Excellent front-to-back as well. de Joe, aa4nn - Original Message - From: [EMAIL PROTECTED] snip I want to try and build an HF two Element Vertical Antenna for 20 meters. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Change from KAT100 in EC2 to the mini-unit
Neal Campbell K3NC [EMAIL PROTECTED] wrote: I built the KAT100 in the EC2 cabinet a couple of years ago and would like to migrate it to the small mini-unit that mounts under the K2. Does anyone know what I need to buy/do to accomplish this? Neal, I may be oversimplifying your request, but I think what your asking is to move your KAT-100 in your current EC-2 into the EC-1 enclosure. I would try asking the parts department for the price of the EC-1 panels. The manual lists the part numbers for the EC1 as E100138 (Front), E100139 (Rear), E100140 (Sidex2), E100146 (Top) and, E100147 (Bottom cover). I have always received very prompt replies for spare part requests. Good Luck 73 Chuck G. K2CG ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Change from KAT100 in EC2 to the mini-unit
The EC1 enclosure is the same size as the K1. The KAT100 will not fit in it. What Neal wants (I believe) is the enclosure that the transverters and the KAT100 come in. I have found no information on this. Forgive me if it is available. Ian J Maude G0VGS Ian, You are correct, I mis-spoke the EC-1 is the enclosure for the K1, The KAT100-1 is the proper nomenclature for the smaller KAT-100 enclosure the part numbers I provided are listed in the KAT-100 Manual. 73 Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2/KPA100 vs. EC2/KPA100
Greg Derda, wrote: I just finished building K2 #6100 …two obvious configuration for my K2 are: 1. K2/100 with separate KAT/100 2. K2 with EC2/KPA100/KAT100 (and KIO2 in the K2) Question is: What are the obvious benefits or quirks between the above setups? Specifically, I am wondering if with the EC2 setup. Greg, 1. Whether the KPA100 behaves (i.e., appears) the same to the K2 as if it were internal? The KPA100 does behave exactly the same whether it is mounted inside the K2 or mounted in an external EC2 enclosure. With the KPA100 mounted in an external EC2 Enclosure you will need an additional KIO2 mounted in the EC2 (one KIO2 in the basic K2 and one in the EC2) and the data cable connecting the K2 and the KPA100 in the EC2 2. Is it a simple plug-n-play to either use or not use the EC2 setup? Yes, it is very much just “plug and play”. As long as the data cable is installed the K2 will recognize when the KPA100 is connected. 3. For QPR ops with the EC2 setup, can you run just the KAT100 without having to power the KPA100? For QRP operations with a KAT100 and the KPA100 mounted in the external EC2 enclosure the power supports both the KAT100 and the KPA100. To run QRP just adjust the power on your K2. As long as the K2 power remains below 10 watts the KPA100 does on turn on. You can not isolate power to just power the KAT100 with both mounted in the EC2, simply adjust the power output to QRP level on the K2. With my K2 I have the KAT2 internal tuner and internal battery installed, with the KPA100 and the KAT100 mounted externally in an EC2 enclosure. For Field operations I simply disconnect the data cable, antenna connection, and power cable then walk away with my K2 QRP rig ready to go. You can take a look at my K2 and KPA100/KAT100 setup with my cable connections at: http://k2qrp.com/Radio%20Projects.htm My setup has been working perfectly for over a year now. I hope this answers your questions. 73 K2CG Chuck Gehring ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re : [Elecraft] Tuning knob Alternative
I tried a couple of alternate tuning knobs on my K2. I tired using the Knob from my Ten Tec Argo V, I think the shaft size was different or poor aesthetics, it was a while ago and I don't remember exactly, I just know that it did not work. Then I tried a FT 100 knob for a while and I needed to add extra felt behind the knob to keep it from being too sensitive. I ordered the knob directly from Vertex Standard USA Customer service. It worked nice, looked pretty, but it just kind of messed with my perfect Elecraft Mojo so I sold it. Finally I went back to my original K2 knob and added the Finger Dimple.The pictures and description on the Elecraft web site do not do justice to this great little inexpensive addition. The Finger Dimple is perfect, if anything it should come as a standard item with every K2. 73 K2CG Chuck Gehring ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] OT: QSL reply to a SWL Enthusiast
I received a QSL card from a SWL Enthusiast in Switzerland, he copied my KX1 2 watt QSO and has requested a QSL card. Since this has never happened to me before I am not sure what to put on the QSL card. Should I fill out the QSL information with my contacts information and then add my comments to him in the remarks section? I apologize for the band width but I would like to send the card with the appropriate info, and this is a first for me. 73 K2CG Chuck G. This is the bottom of the Solar Cycle isn't it? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] KX1 Power Mod
Sorry Joe I meant to send this to the reflector There is no direct link to the Mods Page that I could find, however; For the benefit of the Elecraft Reflector Archive and any others that are looking for the KX1 Power Mod; you can find it by going to the Builders Resources page, on the top of the Builder's Resources page you will find a link to the Spare Parts and Mod Kits page, go to the Spare Parts and Mod's page and all the way on the bottom is the PDF file that describes the KX1 Power Modification. The link is http://www.elecraft.com/manual/E740099%20KX1%20Application%20Note%20Rev%20B.pdf/ Sorry but I had problems getting TinyURL to work 73 K2CG Chuck G ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Wire Antennas and feedline for the KX1
I enjoy putting together and playing with simple wire antennas for field operations. I have also been fortunate to enjoy moderate success with my efforts. However I am looking to refine my approach in an effort to make my systems more efficient. My approach in the past has been to follow designs and dimensions for established dipole’s and doublets, then check my effort by using an MFJ-259 to verify that they fall within acceptable limits for my tuner and desired frequency range. I am not looking to build an antenna that will give me 1:1.0 SWR but rather try to change the feed-line impedance to produce a better load transfer. Currently I am using a 135’ doublet with 50’ of 450 ohm ladder line, but I am looking at trying an 88’ Doublet and different types of balanced transmission lines to vary the input impedance, by using 300 ohm, 450 ohm ladder line or even trying some home built 650 ohm ladder line. I have read several articles and books on antenna building but have missed anything that addresses this aspect of antenna construction. That is not to say that it hasn’t been discussed only that I have not seen it. The following links and articles have been very helpful: L.B. Cebrik’s W4RNL’s technical articles “10 Frequency Asked Questions about the All-Band Doublet” http://www.cebik.com/wire/abd.html “My Top Five Backyard Multi-band Wire HF Antennas” http://www.cebik.com/fdim/fdim9.pdf “Some (Old) Notes on Home-Brew Parallel Transmission Lines” http://www.cebik.com/trans/par.html “The Minimalist Backpack Antenna System” by Bonnie Crystal KQ6XA http://www.qsl.net/kq6xa/antenna/ I have downloaded and tried the trial version of EZ NEC only to be totally confuses with my effort. I would appreciate some feedback on my thought process, am I running down a rabbit trail that has already been explored as a wasted effort? Is there someone on the reflector that understands owns and understands EZ NEC that could provide me feedback on what the modeling results would be with a 135’ doublet or 88’ doublet with 300 ohm, or 450 ohm or 650 ohm ladder line on 80M, 40M, 30M and 20M at a height of 45’ to 65’. Of course if I am all wet then please be kind enough to respond off the reflector and spare me the embarrassment of appearing to be a complete moron. 73 K2CG Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Limited success with USB to Serial Cable Adapter
I achieved some limited degree of success last night with my USB to Serial adapter cable. Thanks to the excellent recommendation/endorsement from Paul Gates, KD3JF and Don Nesbitt, N4HH, I visited the I.O.Gear web-site and downloaded the USB-Serial Driver for the GUC232A cable. http://www.iogear.com/main.php?loc=dm Installing the driver was just a little tricky; I had to uninstall the old driver (following instructions from the MS Windows Tech Support web-site). I also downloaded the GIC232A Manual from I.O.Gear. The driver installed and showed up as Prolific USB Serial. Again following the instructions from the KIO2 manual, I conducted the Menu PORT test and Eureka! the radio responded to commands from the Hyper Terminal, perfectly. Unfortunately, I labeled it a limited success because when I attempted to connect my K2 with my “Ham Radio Deluxe” software things did not run smoothly. There appeared to be a huge latency issue between HRD and the K2. The full frequency from my K2 did not always show up on HRD and commands from the HRD to the K2 were delayed about 8-10 seconds. After running HRD straight to a Serial input and experiencing a seamless interface this was disappointing. But alas that is something that I will work on with HRD and I really don’t consider that a major issue, as I know that I will work it out. I have faith in Simon Brown and the HRD forum. For what it may be worth it seemed that changing positions of the USB cable from one USB connection (on the back of the computer) and there by changing my COM Port settings gave me different results. My system did not seem to like COM Port 3 or 4, but by moving to a different USB connection and changing to COM Port 5 and 6 showed very good results. It may be worth a try. The point is that the I.O.Gear GUC232A software worked. For those individuals looking to get a USB to Serial Interface, I found a great deal from Amazon.com for the Cable and Software for $20 shipping included http://www.dealtime.com/xPC-Iogear_G_UC232A 73 Chuck ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Continuing Serial (RS232, DP9) to USB Adapter cable
My K2 USB saga continues. I truly appreciate the feedback and comments from the Elecraft Reflector. My dilemma started when my older full size desktop computer finally died. With my older system I had an imbedded serial port on the mother board. I use only cables that are wired specifically for my K2, (always have always will). The cables work and the KIO2 work, I used them with my old system and confirmed that they still work by hooking things up to my XYL’s computer. I have tired several different Serial (RS 232, DB-9)-USB adapter cables plugged directly into the USB connection from the motherboard, no USB hub or USB PCI cards. Granted the Serial USB adapter cables came with a variety of other devices, hence my original question about drivers or construction. It would appear that the quality of construction varies from cable to cable. I had assumed that the design and system protocol for Serial to USB adapter would be the same; that evidently may not be the case. I am currently using a new Desktop computer running Windows XP. The new desktop system did not come with any Serial ports. I wanted to try and use the existing USB port. I have double and triple checked my Com Port device settings with the windows Device Manager and tried to check connectivity using the K2 PORT menu and the computer Hyper Terminal following the instructions from the KIO2 manual; 4800 baud, 8 data bits, no parity, 2 stop bits (and tried 1 stop bit). I have tried changing COM ports and different devices drivers. The closest that I came to success was seeing a tiny blip of un-decipherable data stream on the Hyper terminal window during a K2 PORT test. I have finally ordered a PCI Serial Controller card ($9) from Newegg.com. It was either a $9 serial card or another $29 Serial USB Adapter cable to add to my existing supply of cables. I will probably continue to play with some settings and drivers with my existing array of Serial USB adapter cables simply because I am a confirmed “Tinker’er” 73 K2CG Chuck Gehring ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] USB Serial Port Adapter
I have a couple of Serial Port to USB adapter cables that came with various devices; Battery Backup UPS, PDA, etc. None of them seem to work with my K2. Does anyone know if the cables interfaces are unique for certain devices or is it simply a matter of using the correct USB driver? 73 K2CG Chuck Gehring ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Buddi stick and KX1
I have an KX1 with the ATU and 30m Band module. I set up my Buddipole with three taps on each coil for each band. Changing bands is as simple as leaning the Buddipole over and changing the shorting wire from one tap to the next and switching bands on the KX1. I love the combination because I can rotate the Buddipole to get a little better signal on some weak stations. I put my KX1 and Buddipole in my Rucksack and use it on the AT. It makes my ruck a little heavier than I would like, but for short treks 4-6 miles I can live with it. It is almost like the combination of KX1 and Buddipole were made for each other. 73 KI4DGH Chuck Gehring From: Curron HILL [EMAIL PROTECTED] Date: 2005/11/16 Wed AM 07:54:04 CST To: elecraft@mailman.qth.net Subject: [Elecraft] Buddi stick and KX1 Has anyone used a Buddi stick with the KX1? If so, how does it work? ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] 5119 is alive!
For long term protection Brownells Firearms Tools and Supplies offers some great Anti-Galling compounds. http://tinyurl.com/7h5e3 http://tinyurl.com/7kqpw 73 KI4DGH Chuck G. From: Bob Evans [EMAIL PROTECTED] Date: 2005/09/28 Wed AM 10:42:08 CDT To: elecraft@mailman.qth.net Subject: [Elecraft] 5119 is alive! My second K2 is working great after occupying my free time during hurricane Rita (I'm in Houston, Texas). I ordered the pre-built coils this time around and that sure helped speed things up for me. I'm actually going to order another set of coils and retrofit my first K2 because it seems like 5119 is hearing about 10db better than 4687 and I didn't think was possible. I'll go through the troubleshooting process first to see if I have a problem, but I never would have thought I had a problem if I didn't have a second K2 to compare with. I also felt like everything fit (hardware, case, etc.) better this time around. I thought it was great on the first one, so I was very surprised to find things even better on the second one. Maybe it was just the familiarity from building the first one. Now I can finish building out my SO2R station in preparation for November's Sweepstakes contest. The only possible weakness I have found is in the chassis screw/ 2-D fastener interface. My shack is literally a cubbyhole room built in my garage. It is only climate controlled when I'm operating, so it sees high humidity and heat regularly (100F at 100% humidity.yes, Houstonians have gills). After 6 months, I'm finding the chassis screws are getting stuck in the 2-D mounts from corrosion or galling between the aluminum mounts and the steel (I guess) screws. I now have 2 screws that I've not been able to remove before striping out the heads. Any suggestions (both for screw removal and long term protection)? See you all on the bands! Bob K5WA K2s 4687 and 5119 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] Securing a battery in EC1???
Guy, I have used a small strip of 2 1/2 sheet aluminum. Bending the aluminum at right angles to fit the battery, then leaving 2 tabs over the edge of the battery with velcro on the tabs and velcro on the case. The velcro locks the aluminum strap to the case holding the battery firmly in place. I may have a digital photo of the arrangement. 73 KI4DGH Chuck G. From: [EMAIL PROTECTED] Date: 2005/09/16 Fri AM 11:15:11 CDT To: Elecraft@mailman.qth.net Subject: [Elecraft] Securing a battery in EC1??? I'm looking at using an EC1 for the new Power-Sonic PS-1251FP 5.4 amp hr battery with plenty of room for a KD5NDB controller. My question: What have others used to physically secure a battery in an EC1? I could use velcro strips but am interested if there are other alternatives? Thanks in advance, Guy N7UN/2 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: RE: [Elecraft] FPLY menu selections
Bob, Thanks for the reply. I guess I should have played with it some more before posting the question. I am just a little reluctant to select an option until I understand what will happen. Then again I would expect a menu selection that would appear to be more intuitive. Going in sequence with 2 thru 5 or 23, 45 makes sense. The 458 kind of catches you off guard. Why not 258? then you have keys that go right down the center. Or just make all of the available keys 23458 available. Not that I would every need or want them all. I am not complaining or recommending any changes. God knows I luv my K2 just wondering out loud. Thanks again 73 Chuck G. From: Robert Tellefsen [EMAIL PROTECTED] Date: 2005/09/16 Fri PM 12:03:51 CDT To: [EMAIL PROTECTED], Elecraft@mailman.qth.net, [EMAIL PROTECTED] Subject: RE: [Elecraft] FPLY menu selections Chuck Some buttons are not available for the FastPlay option. 45 means just buttons 4 and 5 can be programmed. 458 means buttons 4, 5 and 8 can be programmed. 23 means 2 and 3 can be programmed. Good luck and 73 Bob N6WG The Little Station with Attitude -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of [EMAIL PROTECTED] Sent: Friday, September 16, 2005 9:39 AM To: Elecraft@mailman.qth.net; [EMAIL PROTECTED] Subject: [Elecraft] FPLY menu selections My K2 is working great. Even after six months I am still exploring and playing with the options. Last week I started working with the Fast Play option. I am a little confused with the selections under FPLY. The first FPLY selection 2-5 is self explanatory, memory keys 2 thru 5 are selected. However the other available FPLY options are confusing. 45, 458, and 23. Is there only one available FPLY option? What do these other FLPY menu items mean? 73 KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Switching Power Supply in EC 2
Don Brown KD5NDB posted (2002) an interesting proposal to install a MFJ-4125 power supply into an EC-2 Case. Has any one attempted this project? KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Rework Eliminator K2 Accessory
I have recently received and assembled my Reworks Eliminator modules. I love my K2 and I truly enjoy the ability to tweak modify and if necessary troubleshoot perceived or real problems with my K2. The Reworks Eliminator arrived with great instructions and quality circuit boards. Sure I could have homebrewed similar modules, but I like the polished look of finished circuit boards. I can't pass on enough Kudos and accolades for folks that are willing to invest their time and money to produce professional quality products. Normal Disclaimer: Just a satisfied Customer http://home.cfl.rr.com/garyhvizdak/KI4GGX/unpcbs/ 73 KI4DGH Chuck Gehring ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 Filter Settings MS Access Database
Please excuse me as this is a repeat of a previous post requesting assistance for a Database Application that will record and store K2 Filter Settings. I got a reply back from Andre Koopman PA0AKV. Andre was working on a VB.net program that reads and stores the K2 filter settings in an MS Access DB format. Andre sent me a reply in Dutch and my Dutch is pretty weak. I inadvertently deleted the email before I copied Andre's email address. So if you see this email Andre or if someone has his email address I would appreciate hearing about his progress on his VB.net program. 73, KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 Database application
I am trying to locate a software application that will record all of the user defined settings, view them and if necessary restore the settings in the event that you have to reset everything to a default. I seem to recall a previous post but I can't find it in the archives. 73 KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KX1 turn off
Mike, Absolutley, I use the feature all the time. Select the PLY on the menu and press the tuning knob. The display will show P=0 73, KI4DGH Chuck G. From: mc [EMAIL PROTECTED] Date: 2005/06/21 Tue PM 09:01:00 CDT To: elecraft@mailman.qth.net Subject: [Elecraft] KX1 turn off is there a way to turn off the through the menu the is the transmitter part of the KX1 but not by turning the trimmer under the cover, so it can be used as a exercise keyer with any output ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Touch up Paint Recommendations
Whoops, I am working on making an External Speaker for my K2 with an EC2 Enclosure. Metalwork is not my strong point. Any way I am probably going to have to sand and repaint the entire front panel where I tried to cut out the opening for the speakers. Can any one recommend a type and color of spray paint the matches the color and shade of Elecraft Gray? 73 KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KX1 battery
I for one would at least like to hear if someone see any remote problem with this type of mod? KI4DGH Chuck From: Dick Harms PA2DW [EMAIL PROTECTED] Date: 2005/04/22 Fri PM 01:49:12 CDT To: 'Elecraft Reflector' elecraft@mailman.qth.net Subject: [Elecraft] KX1 battery Hi all, Some days ago I posted a message regarding the charging of NiMh battery's. I got only one reaction, so I guess many are wondering what is a good way! I decided to go for the experimental way and did the following: - Measure the supply voltage, we call that U1; - Measure the battery voltage in charged situation, we call that U2; - Take U1-U2 and devide that over the charging current you want to use. In case of my 2400 mA/h cells I decided for a conservative 200 mA; - The result is the resistor value, in my case about 33 Ohm; - Take the square of U1-U2 and devide over R and you have the power, in my case between one and 2W. I had a 33 Ohm resistor of 5W in stock which was only 0,3 inch, so it fits very nicely. I have mounted it on the component side of the pcb, otherwise it gets in the way of the battery! The result is very positive, it charges nicely. I have mounted a timer in line with the charging supply, an old Nokia 12V GSM supply, to avoid overcharging as I read that NiMh cells dont like that. Have fun! Oh and by the way; modifying is at your own risk and will probably violate the warranty. Or perhaps Wayne and Eric find it such a good idea that they will allow it ;) 73, Dick PA2DW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 KAT 100 choices
Decisions Decisions. I am getting ready to order the External KAT 100 ATU for my K2/100. The desired end state may or may not be a K2 with the KPA100 and KAT100 in a seperate enclosure. However for right now I just want to get the KAT 100-2. So are there any advantages dis-advantages to ordering the KAT 100-1 and the KAT 100PNL or should I order the KAT 100-2 and an EC2 Blank Project. I the difference in cost is only $4, so that is not even a consideration. 73 KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] KX1 battery
Does anyone of you have experience charging Ni-Mh cells in the KX1? I have 2400 mA/h cells installed and if I am right, a 33 Ohm resistor accross D3, would charge these cells in app. 10 hours. I saw Paul W0RW's post awhile ago about his Ni-CAd battery mod. I don't know or understand very much about the actual theory behind rechargable batteries. It is my understanding that Ni-Mh maintain a higher voltage for a longer period without the memory of Ni-CAD. It would seem that having Ni-Mh would be a more practical option for power as compared to the standard Ni-CAD option. 73, KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Final comments on # 4476 K2 Build
I have had K2 4467 completed now for a couple of weeks. I don?t want to take up too much Band Width, but I did want to make some final comments for the sake of potential builders. Before I got my K2 I started to get concerned reading the Elecraft Reflector and reading only problems from several builders. Overall the build went together very well. I ran into some problems that were mostly my inability to properly understand the written instructions in the manual. Additional guidance from Gary Surrency and the fine folks on the reflector got me back on track. During my Final Alignment of the K2, I had problems calibrating the 4 MHz Master Oscillator. I failed to understand that the procedure could and should be conducted several times to fine tune the calibration. The instructions were great and I only had to conduct the procedure about 4 times to get a near perfect match. During the build I also noticed a QSK thumb in the Speaker and Headset. I didn?t do anything to try and fix it and figured that I would get use to it. Well now a couple of weeks later and I can?t detect any QSK thump at all. I?ll write that up to Elecraft Mojo. During the KPA100 build I had a little concern when the resistance measurements for the Q1 and Q2 did not match the values posted in the manual. It turns out that the Finals are photo-sensitive and everything was fine when the measurements were taken without a bright light overhead. I have since added the following modules, K160RX, KSB2, KNB2, KDSP2, KPA100, and the K6XX SMD CW Tuning indicator courtesy of N0SS. Everything is running great. This is only the second kit I have built, my KX1 was the first. This was truly a great experience. Thanks 73, KI4DGH ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Mystified with KPA 100 4 MHz audible tone
The KPA 100 manual points out during the receiver test The signal from the KPA100's 4-MHz crystal oscillator (X2) may be audible at the high end of the 80-meter band. If this is the case, you can move it to a point just above 4 MHz using trimmer C27. The signal from the 4-MHz oscillator on the K2 Control board may be much stronger. Rotate C27 slightly to identify the KPA100 signal. Well I verified that I can in fact hear the two identical and separate tones by adjusting the trimmer C27 in the KPA 100. I am just not sure what the intent of the adjustment is other than to verify the two sources for the audio tone on 80 meters. What am I doing when I adjust C27 to move to tone above the 4 MHz region? 73 KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 IF Amp Alignment and AGC Threshold
I have a couple of questions about readings I have collected during my present build process. First: The procedure outlined for setting the AGC Threshold on page 47 recommends setting the voltage from U2 pin 5 to 3.8 volts by adjusting R-1. In the troubleshooting section Appendix E Page 6, the procedure recommends setting the voltage to 3.9 volts. As I understand it this is a initial adjustment that I will fine tune later and that I am just adjusting for a peak voltage. However the maximum I can adjust my U2 Pin 5 voltage is 3.78. Comments? Second: The IF Amplifier Alignment, outlines a procedure to tune the VFO to 7.000 MHz then with the L34 slug turned down 1 1/2 turns from the top of the can, adjust the L34 for signal peak. I hear a tone at 6,998 MHz and the audible tone is pretty solid for a full one and half turns in either direction on the L34. I hooked up a DMM to the headphone output and the voltage appears to peak at the top of the L34 can. Comments? Third: I remember seeing a posting that discussed a rather elaborate procedure to Calibrate the K2 S-meter using the Elecraft XG1. Or was I dreaming? Can someone point me in the right direction to speed up my search. 73, KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] DMM Recommendations
I would like to see some recommendations for a Digital Multimeter. The Fluke 187 is a little out of my range but something between my Walmart $29.95 special and the Fluke would be nice. 73 KI4DGH Chuck G. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
