Re: [Elecraft] KPA-1500 KPA-800
On Mon, Dec 22, 2008 at 12:26 PM, Jeff Wandling W7BRS k...@w7brs.com wrote: I see at least three options: ... Option 4: Future K3 firmware upgrade will enable KPA800 / KPA1500 features already present in current K3s, plus a small user modification consisting of adding 8 hand-wound super-miniature torroids. Microscope not included. -Michael, VE3TIX (hopefully my first and last comment on the topic, this season) ___ 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] Walwart power?
On Tue, Dec 23, 2008 at 5:43 PM, Burke Jones tacg...@gmail.com wrote: Could I use a 12V 500ma to power my KX1 when at home? The KX1 manual suggests it uses 300-700 mA on transmit, depending on voltage. Assuming you don't need to rectify (or use a ultra-low dropout voltage regulator) it should work but may limit your power output to less than 3W max. Some home / small office Ethernet hubs and switches use largish wall-warts, I have a couple with 12Vdc, 1A wall-warts. You may need to add a low-pass filter to filter any 60 Hz interference and harmonics, such a passive 2nd or 3rd-order RC or LC low-pass filter. -Michael, VE3TIX ___ 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] easy source of static dissipating work mat?
On Fri, Dec 12, 2008 at 12:00 AM, Gary Smith g...@doctorgary.net wrote: My new K3 is on it's way. I have anti-static material that my motherboard came in but that's not enough to work on be static free. I purchased mine from Jameco for less than $25 combined. generic Anti-Static mat http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1storeId=10001catalogId=10001productId=10584; they have a couple different sizes available at reasonable prices. generic Anti-Static Wrist Strap http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1storeId=10001catalogId=10001productId=34552; -Michael, VE3TIX ___ 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] Mouser part numbers
On Fri, Nov 14, 2008 at 2:22 PM, [EMAIL PROTECTED] wrote: I can see that this question has been asked in the past, but appears not to have been answered. Can Elecraft share, assuming it has one, its list of Mouser part numbers for the K2 and its options? I believe Elecraft support will provide the basic or critical specs for a missing part, in particular for the builder who may have invisible part in their junk box. Who would want to delay building to wait for a single missing resistor? Or at least that was my experience with a missing molded inductor / choke in my K2. -Michael, VE3TIX ___ 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] what is a TMP cable?
On Sun, Sep 21, 2008 at 9:13 AM, Charles Harpole [EMAIL PROTECTED] wrote: TMP cable 12 part #E850339. What is it for and why should I get it? It is one of the cables used for the second receiver module, KRX3. If you have the receiver module, you can start reading at page 22 of the installation and operation manual (assuming Rev. B of manual). If you did not order and receive the 2nd receiver module KRX3, then I don't know, but there shouldn't be any reason to worry. Unless you hate getting useful free stuff from companies when order from them. -Michael, VE3TIX ___ 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] K3 - s/n 1591 - TCXO module question
On Tue, Sep 16, 2008 at 9:53 PM, Ann and/or Bill Tekatch [EMAIL PROTECTED] wrote: went to put the TCXO module on the KREF board, I discovered that the leads on the module are too long to allow its bottom to rest against the socket as described on p.46 of the assembly manual. Is this a problem? Do I need to trim the leads? FYI the leads are 1/4 long and a gap of 1/16 is left between the bottom of the TCXO module and its socket when it is fully engaged. You do want the oscillator to sit tight in the socket, but I found there was a tiny amount of lead exposed due to rubber pads on the underside of the oscillator can near the leads, prevented a perfect fit. [1] My opinion (and it is a cheap opinion at that) is that if the gap is large enough to measure, then it large enough you can trim the leads by that much. :-) -Michael, VE3TIX [1] You can see the rubber pads that I'm talking about in this photo http://www.njqrp.org/fireball40/fb7%20can%20color.jpg ___ 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] Re: K3 question--TCXO or another filter?
On Tue, Aug 5, 2008 at 1:44 AM, Dave G4AON [EMAIL PROTECTED] wrote: The difference between TCXOs is 4ppm not 4 Hz. The standard TCXO can be +/- 250 Hz at 50 MHz, the optional one can be +/- 50 Hz at 50 MHz or perhaps +/- 25 Hz once the firmware is changed to allow the supplied calibration table to be used. Using the optional 1ppm TCXO in my K3 results in a typical Thank you Dave (and others who corrected me in private), you are correct I did make a mistake, the 5ppm / 1ppm ( 5E-6 / 1E-6) is relative to the oscillator's frequency, 49.380 MHz, so the actual expected frequency error (tolerance / stability) is as Dave gave above. -Michael, VE3TIX ___ 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] K3 question--TCXO or another filter?
On Mon, Aug 4, 2008 at 10:53 AM, Steve Ward [EMAIL PROTECTED] wrote: I'm getting pretty close to the time I'm expecting to see a Katiegram, and I'm thinking about adding either the TCXO or the 6KHz filter to my order. I do a lot of PSK-31 and I'm wondering if most folks find the stock oscillator sufficiently stable for digital or if the TCXO is better to have? Given that the regular oscillator in the K3 is better than many if not most amateur radio HF transceivers, I do not believe you will see a noticeable improvement with the higher quality TXCO. As far as I know the typical HF user will not notice any improvement by having the TCXO in standard (sane?) operating conditions at HF to 6 meter frequencies. So in short, the stock K3 is more than adequate for PSK-31 operating. The stock XO is +/- 5 ppm (0-50 C) TCXO standard (@49.380 MHz). The upgrade is to +/- 1ppm. The average user won't notice the +/- 4Hz improvement. I believe many users would have issues accurately calibrating their K3 to +/- 1ppm. As far as I know _reception_ of WWV/CHU's HF (or WWVB LF) signals are not that accurate. A GPSDO (GPS disciplined ovenized oscillator) would be typically used to in that situation. My understanding is that beside amateur metrologists (e.g. time-nuts), and the typical users of the upgraded TCXO are microwave perhaps mobile/rover VHF operators who use transverters to multiply the K3 HF output to the higher operating frequency, where you want minimal error (i.e. drift, jitter) in the K3's oscillator, because this error will be magnified (multiplied) by transverter as well. -Michael, VE3TIX ___ 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] K3: is it SDR?
On Mon, Jul 14, 2008 at 11:41 PM, Steve Kallal [EMAIL PROTECTED] wrote: Sorry, but I'm not sure I agree. By that definition many radios since the 80s would be SDRs. Not many radios from the 1980s are SDR, Affordable DSPs from the 1980s didn't have the bandwidth necessary to sample from the IF, (ideally after the 1st mixer on receive) rather than the AF. It wasn't until the late 1990s that cheap and powerful DSPs suitable were readily available, as far as I know. My definition of an SDR is a radio that could be radically changed in functionality by a software change. Perhaps the K3 fits that definition with firmware changes. But does the K3 modulate or demodulate a signal using analog or digital techniques. I am ignorant about the K3's architecture. Yes the K3 does modulate and demodulate the IF to produce a human readable audio / digital output. Personally I think a good rule of thumb is whether the radio could theoretically add a new operating mode with only software changes. In the case of the K3 this is true. For example Elecraft could (ignoring patent / technology licensing issues) add broadcast shortwave DRM support through a firmware update that the end-user could perform. For example, early SSB rigs used a balanced modulator that nulled the carrier. Then a filter selected LSB or USB. I think true SDR would do that entirely in software. How does the K3 generate SSB? A pure SDR would have a ADC / DAC (optionally with power wideband amp for transmission) connected to antenna. In many cases a compromise with an analog RF front-end, typically consisting of 1 or 2 mixers for frequency translation and filtering. The closest to a pure SDR that I personally know of is the GNU Radio and certain USRP modules. As I understand it, some of the improvements in the Flex-radio 5000 are because of an improved analog RF front-end I believe. -Michael, VE3TIX ___ 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] K3 - REF CAL Question
On Tue, Jun 17, 2008 at 12:12 PM, Tom Childers, N5GE [EMAIL PROTECTED] wrote: On Tue, 17 Jun 2008 10:42:53 -0400, [EMAIL PROTECTED] wrote: How do you switch the temperatures to Fahrenheit? Paul N4LCD I think transistors work in Celsius, while vacuum tubes / valves work in Fahrenheit. :-) (As far as I know, Tom is right, good old fashion arithmetic is required) -Michael, VE3TIX ___ 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] antistatic mats
On Fri, Jun 6, 2008 at 11:45 PM, Eugene Klingler [EMAIL PROTECTED] wrote: anyone have a source? ? thanks [EMAIL PROTECTED] Jameco http://www.jameco.com/ (Part # 10576 or 10584) Alltronics (# AS4) http://www.alltronics.com/cgi-bin/item/AS4/ Mouser http://www.mouser.com (96216 or 96217) Digikey http://www.digikey.com/ (# SCP221-ND or SCP222-ND) Future Electronics http://www.componentsuperstore.com/ (Part # 16214) Allied Electronics http://www.alliedelec.com/ (Part # 16201) Various computer supplier resellers including Amazon partners and Tiger Direct (Canada and US stores) sell anti static mats for computer/PC technicians. StarTech is one common brand. Ask google, http://www.google.com/products?q=anti+static+mat+desk. -Michael, VE3TIX ___ 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] Very Dissatisfied With Elecraft Support
On Thu, May 15, 2008 at 9:55 AM, Don Wilhelm [EMAIL PROTECTED] wrote: The K2 does come with parts to build up an RF Probe, and a replacement kit is available from Elecraft for $10 - the kit designation is RFPROBE and can be found in the K2 spare parts section of the website. Caution: This is a kit of parts only (no instructions), but is not difficult at all. The instructions can be found in the K2 manual, which is downloadable from the Elecraft web site. http://www.elecraft.com/manual/ELECRAFT%20K2%20Owner's%20Manual%20Rev%20G%20WEB.pdf PDF page 155 (appendix E, Troubleshooting, appendix E page 9) support -- I have to source obsolete parts from China, buy drill equipment and copper bathroom pipe, and rip apart my television (or my computer) to cannibalize printed circuit boards. If you want Jon, I will send you a Germanium diode (1N34A or equivalent) and a piece of scrap-sized copper coated circuit board. I will even include the capacitor and resistor. The half inch copper pipe is readily available from home building supply stores such as Home Depot, Lowes, etc. These end caps are normally soldered with a propane torch, which is reasonable cheap and also available from a building centre. But that was merely one suggested possible case, based on what the builder had available. -Michael, VE3TIX ___ 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] Firmware Fatigue - was K2 v K3
On Wed, May 7, 2008 at 12:51 PM, S Sacco [EMAIL PROTECTED] wrote: I think the problem (well, one of the problems; there are several) is that they don't, in reality, have a Beta test; they go from Alpha right into Production. I am an outsider, just an Elecraft customer, and from what I've seen there is nothing wrong with their development process. User/Field flashable devices are more toward the personal computer software release style, than what we are use to for black box amateur transceivers. The firmware upgrade process for the K3 is no harder than frequency calibration, so I don't particularly see why there is so much concern. Maybe I'm missing something because I'm extremely comfortable for computers. Of course, I personally view and can visualize software as an extension to hardware (analog and digital) so I just see it as a different point on the continuum of change. Not unlike the general decline (and popular demise) of electron tubes and analog computers. Heck you don't even have set down your drink to update the firmware, whereas some of the post initial release K2 mods were best done with two hands which could interrupt beverage consumption. Can you teach your old radio new tricks? -Michael, VE3TIX ___ 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] K3: preview of coming attractions
On Fri, Apr 25, 2008 at 7:41 PM, John Trager [EMAIL PROTECTED] wrote: I would think the new firmware release would be posted by now! Isn't 600 Beta Testers better than 20??? That's assuming it mostly works. From time to time software releases are broken, sometimes in the packaging process, other times a tidbit of unfinished code enhancement sneaks in. So to catch these errors, software is often released in a process that goes something like: automated build automated install (says done nightly by scripts) - manual install on a single system aka smoke test - a staging release that is distributed to a small group (5-20 people for smaller projects) for a short period of time - a beta release to a wider audience of savvy (power) users, and finally the gold version is released if the process hasn't been terminated by this point in time. Elecraft support doesn't need 600 reports that a bone-headed mistake was made in the FM support for example. The first report is good enough to alert Wayne et all to start debugging. -Michael, VE3TIX ___ 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 on airlines
On Tue, Apr 22, 2008 at 5:21 PM, Joe Subich, W4TV [EMAIL PROTECTED] wrote: There have been changes in the rules concerning batteries - particularly what and how much can be carried/checked. Check with TSA before flying, the rules have effected news crews and Agreed, you can go to http://www.tsa.gov/travelers/ or in particular http://www.tsa.gov/travelers/airtravel/prohibited/permitted-prohibited-items.shtm to find out what is and is not allowed carry-on or checked in the USA. As others have suggested I would be careful about large batteries (larger than a 'D' cell). Spillable lead-acid are not allowed except for in wheelchairs for example. Some airlines have additional information and resources, so you may want to check their web sites as well. -Michael, VE3TIX (I have carried my FT-847 as carry-on with no problem on 2 international flights, but no SLA batteries) ___ 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] K3 received
Yet another data point. K3/10 kit ordered Oct 1, 2007 ''Katiegram March 27 Shipped April 9 (USPS International Priority) Arrived in Canada: April 14, 2008 with roofing filters and microphone -Michael, VE3TIX ___ 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] [OT] K5! [was: K3 time from 'gram to ship]
On Thu, Apr 10, 2008 at 8:11 PM, Bill W5WVO [EMAIL PROTECTED] wrote: Keith and I have been part of an ultra-secret Beta test team for the K5 for some time now (I think). The K5 utilizes an entirely new technology that produces a communication medium by modulating dark energy to produce quantum But the torrid are a pain to wind at home, see these leaked secret photos out of Switzerland, http://public.web.cern.ch/public/en/LHC/ATLAS-en.html It may not be entirely suitable for portable opteration. -Michael, VE3TIX (displaying signs of low caffeine) ___ 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] K3 Enhancements and Application Notes Page (CW rise time)
On Fri, Mar 28, 2008 at 10:12 AM, Bill W4ZV [EMAIL PROTECTED] wrote: Anyone else looked at keying waveforms in pre s/n 211 K3s...? The production start date for this mod could be in error on the webpage. I know this issue has been known about well before S/N 211. My S/N is early 100's and it definitely needed the mod. I thought it is meant to be read, any K3 _up to_ S/N 211 may need the modification. I take it that after that point in time a change was made. Or am I just reading things backwards? Similar to how a number of modifications were available/needed for early model K2s whereas a late model K2 had very few mods / re-work needed. -Michael ___ 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] workbench
On Sun, Mar 23, 2008 at 5:02 PM, Roger D Johnson [EMAIL PROTECTED] wrote: I would like to cover the top of my wooden workbench with something to both protect the top and radios I'm working on. Something anti-static would be ideal. Any ideas out there? Well my basement workbench had a sheet of 1/8 hardboard (aka high-density fiberboard) covering the workbench's pine top left by the previous home owner, and I've found the hardboard easy to keep clean and durable enough to handle my electrical, and light mechanical work (i.e. Dremel rotary tool) typical of amateur radio building and experimenting. It's loose, but large enough its weight holds it in place, and easily replaceable if I do damage it too severely. About half of the hardboard is covered with an anti-static mat, and the other half I can use for soldering, etc. I also happen to have a second workbench outside for larger wood working or metal work, so the basement one is only used for fine work. The excellent setup was not my ingenuity but is due to the previous home owner (a retired machinist / millwright). My point being, that your cover selection may be influenced by any secondary (or primary) tasks your workbench may additionally have such as lawnmower repair, or wood finishing (stains, sanding, etc.) area. -Michael, VE3TIX ___ 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] O.T. ? polyphasers
On Sun, Mar 23, 2008 at 2:57 PM, Jim Cundiff [EMAIL PROTECTED] wrote: This is slightly O.T. but since it will eventually be hooked to my K3 I'll take the chance. I just replaced the UHF connectors on a Polyphaser with two of my N connectors. Is there any sure way to test this, or any questionable Polyphaser now to make sure it is OK, other than connecting it to my existing rig? Something like an Ohm meter test? I am still I don't know of any recommended testing procedure, but a diagram of how I believe the basic (non-DC passing) Polyphaser units are designed is available from http://www.iceradioproducts.com/33.htm. You may wish to ignore the marketing aspect (I.C.E. make and sell a competing product, I'll leave the evaluation of the two to someone more qualified than myself), but understand that there are two main components, a capacitor in series between the input and output, and a gas discharge tube. A short between either in/out and ground is obviously bad, but otherwise I guess all you can test that high voltage capacitor (non-DC units should not pass DC). I don't know if it is possible to test the gas discharge tube itself. -Michael, VE3TIX ___ 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] L33 (BFO torrid) R116 (5.1Mohm 0.125W) mishap
I had a small mishap with my wire cutters while trimming the L33 (BFO pre-wound torrid) and R116 (5.1Mohm 1/8 W) resistor's leads. As I went to trim the fine wire lead of the L33 I accidentally also cut a large chunk out of one of R116's leads. I'm wondering if I should try to patch R116's lead or admit the mistake and order a replacement L33 pre-wound torrid and R116 resistor? The problem is since I have trimmed both hair-fine leads of L33, I'm not certain I can re-solder the leads again in a do-over if I simply tried to replace the one-legged resistor. -Michael, VE3TIX ___ 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] L33 (BFO torrid) R116 (5.1Mohm 0.125W) mishap
On Jan 1, 2008 1:04 AM, Vic K2VCO [EMAIL PROTECTED] wrote: Keep in mind that the ONLY function of R116 is to support L33. So as long as L33 is connected to the circuit board pads, you will be fine. So by all means patch R116's lead; it's just there for mechanical reasons. Ah ha! I was throw off by the unusual value of R116 - 5.1 Megohms. I'm not sure why Wayne or whoever would pick that value, rather than say 1 Meg or 10 Meg. I think I may have a 10 Meg resistor that I can use as a mechanical support. But I think I'll wait until after I get some sleep before trying to salvage it. Happy New Year's. Thank you, Michael VE3TIX ___ 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] CB band TX? - I'm shocked!
On Dec 19, 2007 1:52 PM, Ken Kopp [EMAIL PROTECTED] wrote: Eric's reply (below) reads as if the K3 will TX in the 27 mHz CB band as built. Surely no self-respecting Elecraft owner I was wondering, my understanding is that this transmit limitation is a firmware based restriction, so _in theory_ the K3's RF components could transmit from 1.8 - 50 MHz (minus the IF frequency)? I am just wondering if there is any RF design considerations that would restrict or limit transmission within its operating frequencies extremes. -Michael, VE3TIX ___ 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] Re: Band Limits - MARS ?
On Dec 18, 2007 6:25 PM, [EMAIL PROTECTED] wrote: Eric Wayne, will there be a 'MARS' type band limit capability available sometime? It would be nice to be able to move outside the current http://www.elecraft.com/K3/K3FAQ.htm#MARS ___ 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] K3 Firmware version at time of shipping.
On Dec 16, 2007 8:38 AM, Geoffrey Mackenzie-Kennedy [EMAIL PROTECTED] wrote: Probably a daft question but am I right to assume that the version of firmware supplied as part of a K3 kit purchased from Elecraft is the latest released version existing at the time of shipping the kit, or is the kit supplied with some early version of firmware which has to be updated as part of the K3's 'alignment'? As I understand it, the K3 is supplied with the latest version, available at the time of packaging / shipping. But note that the firmware is still in active development / maintenance, so you will want to update it to get the latest bug fixes and enhancements. If only to verify that you can do it, while you have the manual in front of you. -Michael, VE3TIX ___ 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] Much OT - No practical solution
On Nov 25, 2007 3:20 PM, Ken Kopp [EMAIL PROTECTED] wrote: My older home built in 1962 by an individual for himself ... has only 2-wire Romex. At least it's not ,,, It's a 2-story structure and it's virtually impossible to rewire to meet present-day electrical codes without tearing off the interior wallboard and starting over. ... You can replace non-grounded receptacle with grounding-type (3 prong) GFCI receptacle according to NEC as I understand it (I am NOT an electrician). I believe the outlets should be labeled as No Equipment Ground. -Michael, VE3TIX ___ 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: AGC Threshold Too Low?
On Nov 23, 2007 3:53 PM, Sarah K. [EMAIL PROTECTED] wrote: I'm Sarah, AF6FH! I just got my license a couple weeks ago, and I'm now assembling K2# 0622, which will be my first HF radio. I started assembly on Wednesday night, and so far, everything's been going just fine. Congrats, and welcome! I did my voltage measurements with my own (cheap) DMM, not the internal voltmeter. Maybe a silly question, but is the DMM's batteries fresh? If it has the half-dead cheap old batteries that it came with, the reading may be off a bit too much. A sanity check of comparing the measurement to ones done using the internal voltmeter could help detect if that is the problem if you don't have a fresh battery on hand. I measured the voltage on the LM29307-8, and it has 12.23V at the input, but only 7.53V at the output. The 78M05 has 4.93V at its output. I would expect closer to 8V out of the LM2930T-8 but it is with spec (7.5-8.5V from the LM2930 datasheet), and the input voltage is fine (should only need 8.6 or 9V input to work correctly. -Michael, VE3TIX ___ 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] OT Expert 1k Amplifier
On Nov 22, 2007 9:11 PM, KBG Luxford [EMAIL PROTECTED] wrote: Will the new Elecraft linear amps contain vacuum tubes? Kevin VK3DAP / ZL2DAP No, they are solid-state. Which to me makes far more sense as most vacuum tubes seem to be increasing in price as they become more scarce. I imagine it would be hard to secure a large lot of new tubes, to ensure a stable supply needed to safely market a newly designed product. Personally, I'm more surprised Ameritron and other tube / value amplifier manufacturers has not expanded their solid state amplifiers offerings more. The prototypes used Advanced Power Technology (APT now Microsemi)'s ARF463A/B transistors. Original Details: http://www.mail-archive.com/elecraft@mailman.qth.net/msg21610.html Photos: http://www.n6ie.com/Elecraft.html About some of the production delays: http://www.mail-archive.com/elecraft@mailman.qth.net/msg31295.html -Michael, VE3TIX ___ 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 RFC15?
On Nov 12, 2007 12:06 PM, n0jrn [EMAIL PROTECTED] wrote: Just a quick question for the group. Is there a significant difference between the RF chokes with green bodies and those with brown bodies ?? I'm building K2 #6272 and on page 53 of the manual it outlines installing RFC15 on the bottom of the board. ... My K2 the brown (tan) colored 100uH choke was about half the size of the green 100uF chokes. I think the only difference is the smaller one is perhaps easier to patch into place at RFC15 (underside of RF board near MC145170), but I'm not a Elecraft guru. I notice this (different colored subminiature choke) is still present in rev G of the K2 manual, so I'm not sure. -Michael, VE3TIX ___ 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] K3 STATUS
On 11/1/07, Don Ehrlich [EMAIL PROTECTED] wrote: Well said, Mike and duly noted. But, as one of the impatient ones I should remind you that it is not the waiting that is annoying to so many of us but the *lack of accurate information*. When there are only vague generalizations (more than 20, definetly higher than 30) then those who I understand entirely, I love shiny new gadgets and high tech toys and prefer instant gratification, but personally I prefer vague but accurate and honest answers over the specific lies of sales people from too many other companies. Maybe Elecraft will offer the Super-Duper-Express delivery K3 option, kitted by a team of untrained chimps and with colour photos in the place of any missing parts. My approach is to say just order a K2 or K1 to assemble and play with while you wait That said, with tongue firmly in cheek. :-) Wait a minute, actually I am assembling a K2 as I wait. -Michael, VE3TIX ___ 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
[QRP-L] Re: [Elecraft] F/S multiple items
On 10/31/07, Tom Hammond [EMAIL PROTECTED] wrote: ANYONE who fails to jump at that Adel Nibbling Tool that Rod's selling is missing a STEAL! For those that do, you can buy a one for $20+shipping from Adel Tool Company at http://www.adelnibbler.com/. -Michael, VE3TIX __ QRP-L mailing list Home: http://mailman.qth.net/mailman/listinfo/qrp-l Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[EMAIL PROTECTED]
Re: [Elecraft] [K3] K3, P3E, Transverters (Satellites)
On 10/29/07, Lyle Johnson [EMAIL PROTECTED] wrote: These are all low-volume producers, so I suspect they would entertain slight modifications of their designs for the proposed frequencies for P3E and Eagle, as well as the possibility of using 6m for an IF to eliminate the need to an intervening 144 MHz transverter. Maybe wait for future K3 VHF/UHF modules? Perhaps a KM1 weak signals oriented (CW, SSB) DSP based VHF to microwave transceiver? Maybe vaguely similar to Bob W7PUA's DSP-10 2m SDR/DSP transceiver. :-) -Michael Taylor, VE3TIX ___ 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] manual versions: rev. F w/ errata F-12 vs. rev. G
Is there any additional errors covered in revision G (May 2007) of the K2 manual versus using my printed manual rev F with errata F-12 (April 2007) corrections? I don't want to miss any errors or potential problems, but I'd rather not print the entire rev. G manual if I don't have to. -Michael Taylor, VE3TIX K2 #5438 ___ 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] OT: DSP linked to schizophrenia
K3 owners (or would-be owners), BEWARE!!! DSP linked to schizophrenia At least you won't need a second receiver option for biaural usage -Michael, VE3TIX ___ 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] Is TX frequency susceptible to RF on chassis?
On 10/15/07, David Woolley [EMAIL PROTECTED] wrote: ... broadcast stations. (Does anyone know a relatively accurate broadcast station, receivable in a noisy location in the UK, and near the high end of the VFO range?) I there is or was the LDS station from School of Electronic and Electrical Engineering, Leeds University on 5.000 MHz that is accurate to around 1x10^(-12). Otherwise there is RWM from Russia is at 4.996, 9.996, 14.996 MHz. -Michael, VE3TIX ___ 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] Today's HW-101?
On 10/2/07, Darwin, Keith [EMAIL PROTECTED] wrote: -Original Message- I don't think the rig you describe (hw101 specs) would sell at all, unless it was a kit maybe. Sorry, I wasn't clear. I'm not suggesting HW-101 specs, but a rig that would occupy the same market segment that the old hot-water did. Low cost, good (not great) performance. I'd expect that both cost and Welll if you wanted a low cost, great performing radio kit I would of suggested a K2 (10W) with SSB (KSB2) for ~$750. Considering that price is in the same ballpark as the current video game consoles (Playstation 3, Xbox 2), I think that can be considered affordable for a new radio these days. -Michael, VE3TIX ___ 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] Today's HW-101?
On 10/2/07, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: IIRC, an HW-101 with sharp filter but no power supply cost about $280 in 1968 or so. Run that price through an inflation-adjustment calculator and see how it compares to the cost of a basic K2 with SSB and KPA100. What cost $280 in 1968 would cost $1633.40 in 2006. Source: http://www.westegg.com/inflation/ K2, KPA100, KSB2 is $1117.00 new unbuilt from Elecraft. -Michael, VE3TIX ___ 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] Simple K2 Question
On 7/17/07, Lee Buller [EMAIL PROTECTED] wrote:
Reading about K2 Power Cords...is there anyone out there making them that
look commercially made. I have made two sets of power cords (K2 and the
KAT100) and after I am done they look like crap. They look bad. I guess it
is the way I am trying to put in fuses in the line and don't have a good way of
doing that.
I have a Powerpole connector based power bar that has the fuses in the
power bar, so I don't have to worry about that inline fuse connector
myself.
What I would suggest is using black (or red/black) lamp ('zip') cord,
and covering the inline fuse connector's wire leads with heat shrink
tubing. Also using a short amount of heat shrink tubing as strain
relief at the end connectors, rather than electrical tape.
Of course neatness is easier said then done.
-Michael, VE3TIX
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Re: [Elecraft] K2 power cables source
On 7/17/07, Stephen W. Kercel [EMAIL PROTECTED] wrote: No. The one that both Tom and I are complaining about is a device that looks like a pair of pliers with crooked jaws. I notice that it is sold by PowerWerx and not West Mountain. http://www.powerwerx.com/product.asp?ProdID=28193CtgID=1682 ___ 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] Solid State Amps
On 7/12/07, Bill Coleman [EMAIL PROTECTED] wrote: Now most radios provide 100 watts output using transistors and the tube finals in rigs have long been gone. So, is this just a natural evolution of amplifiers or is some new technological breakthrough happened in high powered solid state amplifiers? Looks like just the continuing evolution of electronics. Some of it is an evolution of higher class of amplifier operation, such as Class-E or F or I guess a hybrid of E and F amplifiers for higher efficiencies, when suitable for non-linear operation (CW, some/all? digital modes). 7-MHz, 1.1-kW Demonstration of the New E/F2,odd Switching Amplifier Class http://www.its.caltech.edu/%7Emmic/reshpubindex/scott.html E. Lau, K. Chu, J. Qin, J. Davis, K. Potter, D. B. Rutledge, High-Efficiency Class-E Power Amplifier , QST May June, 1997. http://www.its.caltech.edu/%7Emmic/reshpubindex/poweramp.htm -Michael, VE3TIX ___ 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] Spectrogram for Linux
On 7/9/07, Gary Montalbine [EMAIL PROTECTED] wrote: Is there an equivalent of spectrogram for use in Linux? I found xoscope. There is Baudline, free from http://www.baudline.com/ Is there a good link for ham related Linux software? http://radio.linux.org.au/ -- hmm, seems broken at the moment And I'd recommend joining a mailing list, such as linux-ham mailing list or similar (I think there is also a couple distribution specific ones, and qrp-linux as well). To subscribe to the list, send a message to [EMAIL PROTECTED] with the text subscribe linux-hams without the quotes, in the body of the message. Archive of the mailing list: http://he.fi/archive/linux-hams/ -Michael, VE3TIX ___ 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] ESD bags
On 6/7/07, Nancy and Bob Widmaier [EMAIL PROTECTED] wrote: Do most kit builders do this or is there a different solution? I protect my work bench with a large mess, which seems to discourage people wandering into my workshop. Where can I get or buy large ESD bags in small quantities at a reasonable price? Most of mine are from various electronic bits I've ordered. One other source is local computer stores that actually build computers themselves, the motherboards and cards (video, source, network, etc.) come in a large anti-static bag, that are mostly waste for them. I have a number of bags from motherboards and cards I've bought or inherited over the years. Here's one surplus source, but I see that they only are selling them in 100s. http://www.goldmine-elec-products.com/products.asp?dept=1287 I think all the online / catalog places like Newark, Mouser, Digi-Key, Jameco stock them as well, not so sure the prices are reasonable. Jameco's price doesn't look too bad. http://www.jameco.com/webapp/wcs/stores/servlet/ProductDisplay?langId=-1storeId=10001catalogId=10001productId=78650 -Michael, VE3TIX ___ 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] K3 - Internal speaker?
On Thu, 17 May 2007 12:47:53 +0100 David Pratt [EMAIL PROTECTED] wrote: I have searched the FAQ but don't seem to be able to find the answer to this... Does the K3 have its own internal monitor speaker? Yes, but does it support Dolby Digital, 6.1/7.1 surround sound support or is that planned as an upgrade module? Think of it as the Best Buy version of binaural audio. Imagine, immersing yourself in wall-to-wall CW. Hmmm. CW send to a subwoofer. -- Perfect for HF mobile and annoying those punks with too loud car stereos. :-) That's my crazy product / project ideas of the day. -Michael, VE3TIX ___ 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] K3 kit
On 4/29/07, wayne burdick [EMAIL PROTECTED] wrote: least in the ham radio domain. One model we've had for the K3 kit is the no soldering, do-it-yourself PC. This has been around since at least the 80's. Complete with the case modding scene too? http://www.neatorama.com/case-mod/index.php http://gadgets.fosfor.se/the-top-10-weirdest-case-mods/ I haven't see any PCs in a Heathkit HW-101 yet -Michael, VE3TIX ___ 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] another T-shirt Slogan
My pitches: Elecraft K3 What's in your shack? (play off AmEx ads) Because Agilent doesn't make transceivers or Because Rohde Schwarz don't make amateur transceivers K3: Thank goodness, Amateur Radio is dying. I couldn't handle any more excitement. So what if it doesn't cost the price of a new car? K-3: Not necessary the divorce-maker (play off of K-19: The Widowmaker) Elecraft K3 World domination never looked so easy (and my favourite:) Elecraft K3 - Who built your radio? -Michael, VE3TIX ___ 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] ESD prevention
On 2/15/07, RC [EMAIL PROTECTED] wrote: Hi Gang I am slightly confused! When using ESD protective measures you should use: 1) a wrist strap connected to 2) an anti-static mat. 3)You should build/work on the anti-static mat to be certain that all components (and you)are at the same electrical potential there by minimizing any ESD damage. 4)should you connect the anti-static mat to the carpet with a long clip lead? 5)or house electrical ground? While I don't know if the KX1 is more sensitive to electrostatic damage, as far as I do know your anti-static wrist strap and/or mat should be tied to earth or AC mains ground via a 1-Megaohm or higher resistor (to prevent a shock risk). Some wrist straps and mats have a resistor built into the cable for this purpose. You can check with your DMM / VOM. I believe this connection via the resistor essentially drains the static voltage to ground. -Michael Taylor, VE3TIX ___ 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 Freq Counter Probe Assembly
On 1/17/07, Dennis Vavra [EMAIL PROTECTED] wrote: I need know if I am using the right component for const of Freq Counter Probe as described on Page 45. It calls for a 10pF axial-lead cap. I have something that looks like a small yellow resistor without stripes, with markings K1G 100J and BK4 0545 is this the right component for the probe? Dennis Vavra, 100J is common (IEC) markings for 10pF. Looking at the instructions, and at my K2 Freq Counter probe it does sounds correct. -Michael Taylor, VE3TIX ___ 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] Re: RF textbook recommendations wanted
On 11/13/06, wayne burdick [EMAIL PROTECTED] wrote: Another must-have for pragmatic design (which definitely applies to RF) is Solid State Design for the Radio Amateur, a classic by Hayward and DeMaw. This is available from Elecraft (as is EMRFM, I believe). Unfortunately _Sold State Design for the Radio Amateur_ is out of print - look for it at hamfests, partly because it was getting fairly dated in particulars, so _Experimental Methods_ grow out of being an update I think. Maybe Wayne had _Introduction to Radio Frequency Design_ by Wes Hayward (red with wireframe plot on cover) in mind. If Mike is not afraid of calculus then _The Electronics of Radio_ is likely very useful. Both _The Electronics of Radio_ and _Introduction to Radio Frequency Design_ have more math content than your typical ARRL publication, so some hams find them not as accessible. -Michael, VE3TIX ___ 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] Slightly cracked ferrite core in BL2 kit
I just received my AT1 and BL2 mini-module kits today and one of the binocular cores from the BL2 balun has a corner cracked from the shipping process, I mean abuse. Should I get it replaced or is it a non-issue? Photo of the slightly cracked ferrite core: http://shurl.org/qWttl -Michael, VE3TIX ___ 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] Power Suppy for K2
On 10/2/06, Samir Popaja [EMAIL PROTECTED] wrote: Which to choose, switching supply or not switching? I would say choose based on how you plan to use it. In a roomy radio work area a linear is nice and simple. It can also heat the room which is nice in Canadian winters. If you have a tiny area or will often move / carry the power supply you will likely want to choose a switching power supply. I personally have a 23A 13.8VDC Samlex model 1223. I've used it on both 120 and 220VAC with no problems. It requires an easy but many adjustment to switch input voltage so if you want to use it for international travel look for a model that works with any input AC voltage. Just about any will handle both 50 and 60 Hz with no issues. Whats the difference between switching supplies and not switching supplies? Pros and cons... The main factors are size/weight, efficiency, and RF noise. Switching power supplies are lighter and sizer for equivalent power output. Switching power supplies are more efficient at converting AC input to high current regulated DC output 80%-90%+ efficient versus about 30-60% efficiency for linear PS. This causes the amount of heat generated to vary based on the design type, the heat is a waste by-product of the inefficiency. Switching power supplies use a high frequency (20kHz - 2 MHz) in their conversion process, these can cause harmonic distortion in the RF frequency range unless properly filtered. I believe switching supplies will always raise the noise floor due to the nature of how they work, but I believe they can be filtered and shielded enough to make them usable in all but the most demanding to weak signal applications. I'm wondering that ELECRAFT hasn't devoloped PS to match design for K2 or K2/100? Three reasons I can think of are: A linear supply is boring design wise and very easy to home brew (as hard as a home brew QRP antenna tuner) and a large transformer needed to power the K2/100 is heavy to ship, and I suspect the economics were not attractive (Astron have the majority market share of the US amateur radio market). -Michael, VE3TIX ___ 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] New Mini-Modules - They're here!!
On 9/27/06, Darwin, Keith [EMAIL PROTECTED] wrote: I looked them over and gotta say, I was very disappointed. I had really envisioned a meter in a case that would match my K2. Something with a backlit LCD that would display power and SWR to with 2 digits each (11 Sounds like Larry N8LP's LP-100 Digital Vector Wattmeter built in a Elecraft EC2 enclosure. http://www.telepostinc.com/lp100.html I don't think it can be done at mini-module price-range. I guess I expected no case since they were listed as mini-modules, but I understand what you are saying, particularly with the SWR meter, which I agree it might be nice to make a case option available. -Michael, VE3TIX ___ 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] Amplifier Status KPA1500
On 9/11/06, Craig Black [EMAIL PROTECTED] wrote: As I re-read my prior posting it might have appeared that I was trying to answer the question of availability by including a quote from a previous One factor that may affect availability is whether or not the FCC has dropped the restrictions of selling amplifiers that operate on 10 and 12 meters out of the box yet. The restriction was intended to prevent such amplifiers from being easily sold to CB-ers who operate at illegal higher power levels as I understand it. Nowadays most amateurs are not building* or modifying their equipment, so it was expected that the FCC no longer expected amateurs to be able to modify their amplifiers to operate on 10 and 12 meters, and keep their amps output clean and spurious emissions low. * I realise the irony of saying that on an Elecraft oriented list. :-) ___ 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] newbie question
On 8/31/06, KU4YP [EMAIL PROTECTED] wrote: I would like to ask a question. If you were buying a k2, what would be the basic options you could not do without when buying the kit? Like everyone, I am on a set budget but have enough for the rig plus a little more. Wanted to get the most bang for the buck and also get the options that are really needed right out of the gate. You really need none, the K2 is a usable rig on its own. Of course many hams, myself included, like additional features. :-) It depends on how you plan to operate. If you want a QRP in the field radio then the basic model, perhaps with the built-in antenna tuner (KAT2) is likely all you need/want. If you want a more of a contest radio then KPA100 power amplifier, KNB2 noise blanker, KDSP2 DSP, KAT100 ext. tuner, and if you want the KSB2 SSB module might be the what we want. Personally, K2 with KPA100, KSB2, and KNB2 would be my first add-ons. -Michael Taylor, VE3TIX ___ 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] Re: Tokyo Hy-Power QRP Rig
On 8/21/06, Eric Swartz - WA6HHQ, Elecraft [EMAIL PROTECTED] wrote: What K3? We certainly have not announced anything like that. We're busy making and shipping K1s, K2s and KX1s. :-) I was hoping you let slip that you were busy adding FCC approval certificates to yet-to-be released amplifier kits. :-) That does make me ask if anyone knows of any restrictions to exporting / importing these near-future kits into Canada? -Michael Taylor, VE3TIX ___ 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 Front Panel LCD Question
On 7/30/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: the LCD on the front panel board. The LCD that came with my kit has the clear strip mentioned on the front (display) side, but on the back side it has an opaque strip with no markings on it. Should this opaque strip be removed or left in place? If it is a thin plastic film (similar to saran wrap) on the back of the display that can be easily removed, then you can remove it, as described in the 4th step (paragraphs with a check-box) on the left column, of page 27. Do *not* attempt to remove the thick plastic material on either side. With my K2 (#5438) I don't remember a opaque plastic film on the back of it. -Michael Taylor, VE3TIX ___ 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] Re: FS Elecraft K- twins
On 6/25/06, Alexandra Carter [EMAIL PROTECTED] wrote: Sellers often restrict sales to the continental US or CONUS, because of shipping troubles, perceived higher costs, etc. In my own case (I sell on Ebay) I'll ship anywhere in the Empire, but it MUST be part of the Empire. Thus, Alaska, Hawaii, US bases overseas, no problem. However, absolutely NOT Canada. You see, Canada is not actually part of the USA. Many Canadians wish it were, and your I am sorry, but I am still not clear about your explaination as to why _you_ don't ship to Canada (or Mexico)? Is is shipping costs? Legal hassle? Bad deals? Xenophobia? Dislike of other countries? Longer line-ups or slower service at the post office to send foreign mail? BTW Thanks for the offer regarding a change in government, but I'll stick with our Queen.[1] :-) [1] http://shurl.org/ZLDVI -Michael, VE3TIX ___ 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] rf probe
On 6/16/06, Jesse Nicky [EMAIL PROTECTED] wrote: I guess I am missing something here. Why do the banana plugs have to be connected with rg 174 coax ?? The use of coax is AFAIK* to prevent the probe from picking up stray RF energy from the powered up radio under test. The banana plugs are used as the standard connectors to a DMM. If I have to use coax is there a trick to unraveling the braid ?? I cannot seem to get the tips of the banana plugs to accept solder. I used my wire cutter to make a parallel cut to the braid (parallel to the length of the cable) to allow the braid to pulled to one side of the insulation and then twist the braid into a wire. This might not be the best solution, but I filled the small hole in the banana plug with solder, heated the solder, and let the braid (and repeat for the wire inside the coax insulation) rest in the pool of solder until it cools enough to hold it in place. Remember to put the plastic covers inline before soldering. As always, any help or advice would be greatly appreciated. I hope that make sense, and is useful to you. *) AFAIK = As Far As I Know -Michael Taylor, VE3TIX ___ 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] SMT project
On 6/10/06, Vic K2VCO [EMAIL PROTECTED] wrote: Can someone suggest a kit using SMT components that would be a good learning experience for someone wanting to learn SMT techniques? I would prefer something useful like test equipment rather than YACQR (Yet Another Cute QRP Radio) of which I have several! QRP Dummy Load http://www.norcalqrp.org/ncdummyload.htm $10 USD Single band Antenna Tuner http://www.norcalqrp.org/nctunerupper.htm $10 USD LED Digital Dial Frequency counter http://kd1jv.qrpradio.com/Ddial.HTM $35 USD Nightfire Electronic Kits http://www.vakits.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] high end paddles
On 6/7/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: ... chrome benchers which have worked great for years. I've thinking of stuff like Begali and the like. I'm a 'try before you buy' type of person. There's no way I would order an expensive key like that without trying a few qso's out to see how I like it. What's the best way to do ... I don't know if any dealers of these high-end keys and paddles offer a money-back trial or not. Otherwise I suppose you might have to travel to Dayton next year and visit all the vendors' displays. I suppose a local club could organize a key night to let hams have a quick try of various straight keys and paddles from their membership's own shacks. -Michael Taylor, VE3TIX ___ 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] Wha'ts Wrong With Our Radios (WAS:NewProducts, Building Demo, T-Shirts, Amp and More.)
On 5/24/06, Ron D'Eau Claire [EMAIL PROTECTED] wrote: What I don't understand is why we keep putting small gear in little rectangular boxes. I agree. I hope my next QRP rig is the size of Apple's iPod nano *. :-) http://www.apple.com/ipodnano/ * 3.5 x 1.6 x 0.27 inches and 1.5 ounces or 89 x 41 x 7 mm and 42.5 grams ___ 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] QRO
On 5/22/06, Ed Lambert [EMAIL PROTECTED] wrote: I am no expert on QRO but I am in the process of building the 3CX1500D7 amp in the 2006 handbook. I am as interested in the engineering aspects of QRO as in the engineering aspects of QRP. The economics of my project are getting a little out of hand so I visited I'm curious, what makes RF amplifiers fairly expensive projects? I admit I have no experience or exposure to them, but as far as I can tell the two major building blocks are a power supply and a not terribly complex amplifier circuit. Is the bulk of the cost in the amp device(s) - power transistors or vacuum tubes/values? Thanks. -Michael VE3TIX ___ 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] The new amplifier (s)
On 5/19/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Ok fellows, you all are at Dayton. How do you like the new amps. No FCC approval yet, as far as I know, so I don't thing there is much new about them yet. But I'm not in Dayton, so I could be happily surprised. -Michael VE3TIX ___ 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] Toroid Guy
On 5/1/06, Paul Gates, KD3JF [EMAIL PROTECTED] wrote: Anyone know the Correct email address for the Toroid Guy? Website http://www.kitsandparts.com/ Email: paypal at partsandkits.com or w8diz at cinci.rr.com Owner: Dieter Gentzow, W8DIZ ___ 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] Re: Metamorphosis
On 4/11/06, wayne burdick [EMAIL PROTECTED] wrote: Meanwhile, I don't know of anyone completely disassembling a fully-built Elecraft radio and putting it back together. In theory this means twice the fun you had building it the first time ;) While I am still on the early stages of assembling my first K2, I would like to suggest that myself and far too many other hams have not built anything for *above* 30 MHz. Perhaps a low powered 6m/2m CW/SSB with FM option rig would be a reasonable project? Something designed as a starting point for the VHF/UHF weak signal operators' basic radio. -Michael Taylor VE3TIX ___ 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] Static mat repair?
On 3/18/06, [EMAIL PROTECTED] [EMAIL PROTECTED] wrote: Its out there are you are the one that causes it... Humidify your work area and stay grounded. Paul, others, What protections would you recommend a hobbyist take to ensure low/less risk of ESD in the usual home ham shack? Grounded (with 1Megaohm resistance) wrist strap? Anti-static bench mat? Anti-static floor mat? Anti-static shoes or shoe strap? (the shoes/socks combination I often wear to work can cause a static spark when getting out of my car in the winter) 100% cotton lab coat? Normally in the summers I'm trying to dehumidify my work area, although the winters it tends to be both cold and dry. Thanks, Michael VE3TIX ___ 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] Don, you're a genius! (Poor soldering)
On 2/28/06, Darwin, Keith [EMAIL PROTECTED] wrote: [mailto:[EMAIL PROTECTED] On Behalf Of Don Brown As far as technique this takes some experience. Building one or two of the mini kits is a good way to start. - What a great idea. I should have thought of that. Time to place an order for a mini kit! That will help me answer questions such as do I really want to try to build a K2/100 or not. - Keith KD1E - Also look at the NorCal QRP web site series by Doug Hendricks, So you want to be a builder? and try the recommended (and cheap!) kits from NorCal QRP, like the VE3DNL marker generator and the SMT dummy load, (USD) $7.50 each. http://www.norcalqrp.org/sywtbab.htm -Michael, VE3TIX ___ 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] IMHO
On 9/28/05, Kevin Rock [EMAIL PROTECTED] wrote: pardon me for not keeping up with computer slang (my preference is radio, heh heh) but what does IMHO means??? Some quality sources for computer jargon: The Jargon File: http://catb.org/~esr/jargon/ http://kb.iu.edu/data/adkc.html And the 2nd place to search (after google) for anything: Wikipedia: http://en.wikipedia.org ___ 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] Future Elecraft transverters
On 9/14/05, Lanier, Robert [EMAIL PROTECTED] wrote: Also, does anyone know of Elecraft-quality 432MHz and 1296MHz power amps? The only thing I've found so far are homebrew stuff and nothing that comes in a kit. If I've missed something, please let me know. Down East Microwave http://www.downeastmicrowave.com/ offer the closest thing to UHF and microwave power amp kits, that I know of. -ve3tix ___ 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] No Code UK view
On 9/4/05, alan alan [EMAIL PROTECTED] wrote: The UK amateurs voted by a reasonable but no a large majority to drop the code post WRC03. The issue for the administration (then the Radiocommunications Agency - RA) was a defensible licensing need. Historically CW was the only I believe the secondary reason is that the RA, and Industry Canada (in Canada), want to simplify administration of amateur radio licensing. Both government agencies appear to be streamlining the processes thus requiring fewer government resources to handling amateur licensing. I believe in Canada it may be not much more than a single person spending 1-2 days a month on amateur radio licensing (issuing new licenses updating the government database that RAC makes available, http://www.rac.ca/callbook/, and in recent history, no enforcement resources. Eliminating Morse testing is consistent with this simplification of amateur licensing, which I believe the FCC is interested in as well. -ve3tix ___ 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] Power supply for KPA100
On 8/20/05, John Heaviside [EMAIL PROTECTED] wrote: Alternatively if I buy ready made there are units from about 70 pounds to 150 pounds. Any recommendations? The RS 50 mentioned in postings does not seem to be available UK. I have a SEC-1223 23A Switch Mode Power Supply that I bought from Waters Stanton, which is my main home station power supply. It appears to available for 100 pounds. I have used it in the UK at 230VAC, and have since modifed it as per the manufactour's instructions for operation at 120VAC in Canada as well with no RF hashing or noise problems associated with cheaper switching power supplies not made for amateur radio use. -ve3tix ___ 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] OT: Electronic curriculum for middle school wanted
On 8/11/05, Craig Rairdin [EMAIL PROTECTED] wrote: I'd like something that covers the basics of electricity and electronics that includes some simple projects. In the end I'd like them to be able to take the Technician exam, so I'll have to supplement it with rules and operating practices. I'm also going to supplement it with basic home wiring just for fun. Well I read Forrest Mim's classic, _Getting Started in Electronics_ when I was 12 years old, unfortunately around 25% of my self-built projects were failures, so some guidance and help when building would of been nice. Another self-guided title that a youngster could easily follow is _Teach Yourself Electricity and Electronics_ by Stan Gibilisco, but it does not have any experiments if I remember correctly. I'm a little hesitate to encourage young children learning about household wiring, for a couple of reasons, first they are too young to use currently. Second, by the time they are old enough of it to be of any value they might confuse facts (is ground brown or green?), and some of the facts (i.e. NEC) may have changed. ___ 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
