Re: [Elecraft] Visalia sales?
I'll settle for picking up my KX3 :-) 73 Dave G3WGN WJ6O - 73 Dave G3WGN WJ6O -- View this message in context: http://elecraft.365791.n2.nabble.com/Visalia-sales-tp7377712p7378097.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Koss Headsets for the K3 (Was: Re: Yamaha CM500 Headset)www
Radio Shack used to sell these with a RS box, but labeled Koss on the phones. I have been using them for years, wore one out. And they sell replacement pads on their web store (Koss). Jim K0XU Sent from my Xoom tablet On Mar 15, 2012 10:51 PM, "Gary K9GS" wrote: > An update: > > I stopped by the Koss Factory Store today. I looked at the SB49 first. > (The SB45 is identical to the SB49 but without the volume control in the > cord). I didn't really like the way the SB49 fit. It's a very > subjective thing but comfort was what I was looking for. The other > thing I didn't like was the flexible boom for the microphone was very > "whippy". It was almost like a wet noodle. Not good. > > Next I looked at the SB40. The fit was great and very comfortable for > the 5 minutes I wore it. The mic boom was stiffer too. The SB40 has a > dynamic mic element. I ended up buying the SB40. The price was $39.00 > plus sales tax. > > I was all set to buy a Yamaha CM500 but I really wanted to see how they > fit first. I looked at a couple places and couldn't find a local store > that had the CM500. For this reason I look at Koss. The other thing > Koss has going for it is the limited lifetime warranty. Being that I > live near the factory this is a big advantage. Second is that I've > owned other Koss products and have always been very happy with them. > > As I said I've never used the Yamaha CM500 but the Koss SB40 looks very > similar. > > I'm also kind of a headphone junkie. With the K3 I figure that most > modern headsets have much more performance (frequency response, etc) > than one needs for communication. So they are all pretty much up to the > task. Same for the microphone. With the TX and RX Eq features of the > K3 I decided to concentrate on fit and comfort. I think that juist > about any headset and microphone can be made to sound good. > > I haven't used the SB40's yet but will report back once I've played with > them a bit. Here's the link to the Koss website: > > http://www.koss.com/en/products/headphones/communication_headsets > > > > > > On 2/18/2012 1:27 PM, Gary K9GS wrote: > > I live near Milwaukee where the Koss factory is located. They have an > > outlet store. > > > > I'll try to stop in there this week and see if I can try on a pair > > > > Stay tuned... > > > > BTW...one of the best kept secrets about Koss is that they will do > > lifetime repairs if their products fail. I have a Koss headset that I > > use for CW that I have taken to the outlet store for repair several > > times. They'll usually repair while you wait. They also will sell you > > wear items like earpads for very low cost. It's a great deal if you > > live close by..otherwise I think you have to pay shipping. > > > > On 2/18/2012 5:05 AM, Peter Torry wrote: > >> Many thanks everyone for your responses to my request. > >> I am now investigating the Koss SB40 that appears to be similar to the > Yamaha headset. > >> > >> Regards > >> > >> Peter G3SMT > >> __ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:Elecraft@mailman.qth.net > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > >> > > -- > > > 73, > > Gary K9GS > > Greater Milwaukee DX Association: http://www.gmdxa.org > Society of Midwest Contesters: http://www.w9smc.com > CW Ops #1032 http://www.cwops.org > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Visalia sales?
And freshly made KAT500's too.. I hope! 73, Bob K2TK On 3/16/2012 12:29 AM, Gary K9GS wrote: > P3's and SVGA adapter boards at Dayton too! > > On 3/15/2012 9:20 PM, Ralph Parker wrote: >> Is it too early to ask what might be for sale at Visalia >> (maybe in P3 shaped boxes behind the table that one could take home)? >> >> Ralph, VE7XF >> __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Visalia sales?
P3's and SVGA adapter boards at Dayton too! On 3/15/2012 9:20 PM, Ralph Parker wrote: > Is it too early to ask what might be for sale at Visalia > (maybe in P3 shaped boxes behind the table that one could take home)? > > Ralph, VE7XF > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > -- 73, Gary K9GS Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.com CW Ops #1032 http://www.cwops.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Sticky feet
I use the rubber mesh shelf liner in black under my paddles...it works fantastic. I also use it on top of my amp to keep the watt-meter perched up there from sliding around. I just cut out around the ventilation holes so they aren't blocked. Something that hasn't been mentioned is what people are doing if you use the bail on the K3 and P3? I don't own a P3, yet, but on the K3 I have cut a decorative piece of wood to elevate the P3 a little higher off the desk. The piece of wood is currently a little wider than the K3 bail. I've stuck some ~1/4 thick silicone rubber feet to the desk facing side and this keeps things from sliding around very well. One thing I plan on doing when I add the P3 is to make a similar thing but spanning the combined width of K3 + P3. I'll also cut a shallow grove in the top of the wood piece which will hold the bail and will keep the front panels in the same plane. I may even make this out of some cool looking exotic wood. I'm a wood worker too. Once I do this I'll post some pictures but it will probably be a while before I get around to this. On 3/15/2012 9:35 PM, Rich wrote: > For more grip I have used rtv ( silicone ) we’ve all used it for so many > things. > Use the one for windshields it’s flowable so if you turn your rig upside down > and level > and coat the feet that should work. I need to try it too. > I keep pushing my panadapter back when I push the display button. > You can get stick on feet, they are usually silicone too. > Put them next to the stock feet if they are tall enough or stick them on the > stock feet > or replace the stock feet with them. > I’ve seen them at ham swaps and hardwares. > > Rich KC8HMJ > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html -- 73, Gary K9GS Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.com CW Ops #1032 http://www.cwops.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Shorty P3
Elecrafters: I've just finished an interesting project, cutting a P3 in half! I wanted to reduce the size and weight of the P3 I take down to P49Y in carry-on luggage, so I cut the top, bottom, and side panels to shorten them, drilled a few holes, and, voila, a P3 that is less than 5 inches deep. It works fine and should be easier to fit in my computer bag. In addition to the general sacrilege of cutting up an Elecraft product, there are some downsides: (1) While the current P3 is mostly empty space, obviously Elecraft has plans to put more stuff inside it, and it I want to use that capability, presumably they will sell me new panels (actually I received suggestions to make new aluminum panels to avoid this problem and also to still further reduce weight). (2) The tilt angle is changed, and requires the back to be propped up on something; and finally (3) Elecraft's concept of intentionally adding weight by using steel panels so that the unit doesn't move when buttons are pushed has been compromised, but I think I can live with that. Anyway, I'm very pleased with my Shorty P3. BTW, great thanks to Jeffrey, WA6KBL, who did the machining after I realized my tools were inadequate to the job. He has a garage that looks like a machine shop and knows how to use all those power tools, too. Pictures are at http://share.shutterfly.com/action/welcome?sid=1AbNmTlw1aMWFU&emid=shareprintsharer&linkid=link4&cid=EM_sharshar 73, Andy AE6Y __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA-500 high gain modification?
> But I would buy a second KPA500 in a heartbeat if I knew I could > modify it for 10 watts drive for full output! I think you're being optimistic about full output with 10W drive. The VRF-2933 is rated for 23 dB gain (typical). With perhaps 1 dB loss in the low pass filter, a dB or so in the output transformer, roughly 3 dB in feedback to improve linearity one dB in the input transformer, bias decoupling, gate balancing, and two dB in the input matching comes very close to the roughly 15 dB gain limit in the US regulations. Some of those values are based on application notes from Motorola, MicroSemi and APT for similar MOSFET designs while some values are from Elecraft designers. In any case, the inescapable conclusion is that there is no "magic modification" to get the additional 2 - 3 dB of gain necessary to get 600W with 10W of driver from the KPA-500. 73, ... Joe, W4TV On 3/15/2012 6:32 PM, Oliver Dröse wrote: > Great Alan, nice idea with the manual! ;-)) > > Anyway, a very big part of this world's ham population is not bound to FCC > rules. So no need to make it public how to modify, just publish the > schematics or send them out on request without pointing out something and > Elecraft should be safe? > > My KPA500 is serving me very well on my remote station so also no chance to > take the PA apart again and have a look myself and just buying a second one > without knowing it is possible might be a bit too expensive to find out. > ;-)) But I would buy a second KPA500 in a heartbeat if I knew I could modify > it for 10 watts drive for full output! > > 73, Olli > > > > - Original Message - > From: "Alan Bloom" > To: "Oliver Dröse" > Cc: > Sent: Thursday, March 15, 2012 10:58 PM > Subject: Re: [Elecraft] KPA-500 high gain modification? > > >> On Thu, 2012-03-15 at 21:54 +0100, Oliver Dröse wrote: >> ... >>> Three big reasons I can think of that Elecraft does not want to release >>> the >>> schematics: >>> a.) To keep them hidden for the competition (quite understandable). >>> b.) It would probably put down sales of the KPA3 a bit (hmmm). >>> c.) If somebody modifies it themselves it will be almost impossible to >>> support it in case of problems (quite understandable, too). >> >> The other reason is they might get in trouble with the FCC if they make >> it too easy to modify. >> >> Many years ago when the CB craze was at its height, a manufacturer who >> shall remain nameless came out with a new transceiver. On page 1 of the >> manual was an illustration of the underside of the chassis with a big >> arrow pointing to a certain wire. "Do not cut this wire or the >> transceiver will transmit on 11 meters." >> >> They didn't get away with it. :=) >> >> Alan N1AL >> >> >> >> >> - >> eMail ist virenfrei. >> Von AVG überprüft - www.avg.de >> Version: 2012.0.1913 / Virendatenbank: 2114/4872 - Ausgabedatum: >> 15.03.2012 >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Koss Headsets for the K3 (Was: Re: Yamaha CM500 Headset)www
An update: I stopped by the Koss Factory Store today. I looked at the SB49 first. (The SB45 is identical to the SB49 but without the volume control in the cord). I didn't really like the way the SB49 fit. It's a very subjective thing but comfort was what I was looking for. The other thing I didn't like was the flexible boom for the microphone was very "whippy". It was almost like a wet noodle. Not good. Next I looked at the SB40. The fit was great and very comfortable for the 5 minutes I wore it. The mic boom was stiffer too. The SB40 has a dynamic mic element. I ended up buying the SB40. The price was $39.00 plus sales tax. I was all set to buy a Yamaha CM500 but I really wanted to see how they fit first. I looked at a couple places and couldn't find a local store that had the CM500. For this reason I look at Koss. The other thing Koss has going for it is the limited lifetime warranty. Being that I live near the factory this is a big advantage. Second is that I've owned other Koss products and have always been very happy with them. As I said I've never used the Yamaha CM500 but the Koss SB40 looks very similar. I'm also kind of a headphone junkie. With the K3 I figure that most modern headsets have much more performance (frequency response, etc) than one needs for communication. So they are all pretty much up to the task. Same for the microphone. With the TX and RX Eq features of the K3 I decided to concentrate on fit and comfort. I think that juist about any headset and microphone can be made to sound good. I haven't used the SB40's yet but will report back once I've played with them a bit. Here's the link to the Koss website: http://www.koss.com/en/products/headphones/communication_headsets On 2/18/2012 1:27 PM, Gary K9GS wrote: > I live near Milwaukee where the Koss factory is located. They have an > outlet store. > > I'll try to stop in there this week and see if I can try on a pair > > Stay tuned... > > BTW...one of the best kept secrets about Koss is that they will do > lifetime repairs if their products fail. I have a Koss headset that I > use for CW that I have taken to the outlet store for repair several > times. They'll usually repair while you wait. They also will sell you > wear items like earpads for very low cost. It's a great deal if you > live close by..otherwise I think you have to pay shipping. > > On 2/18/2012 5:05 AM, Peter Torry wrote: >> Many thanks everyone for your responses to my request. >> I am now investigating the Koss SB40 that appears to be similar to the >> Yamaha headset. >> >> Regards >> >> Peter G3SMT >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> -- 73, Gary K9GS Greater Milwaukee DX Association: http://www.gmdxa.org Society of Midwest Contesters: http://www.w9smc.com CW Ops #1032 http://www.cwops.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 and battey usage
Anyone using the K3 with an auto size deep cell 12 volt battery with 60 watt solar charge system. Operation is limited to about 2 hours per day mostly during the day with 80% listening. Your experience with the K3 and solar appreciated. Thanks Van W4GIW a ham for 60 years. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] W1 metallic enclosure
That's it! Thank you very much Mike. I was thinking about doing something similar in a little TenTek enclosure. Your W1 meter works on my PC just fine. Win-XP 32bit, newly built and perfectly perky. 73, Bob K7HBG __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Elecraft SSB net control operator needed
As I stated last Sunday, I will not be able to be the net control operator for the weekely SSB net for the next three weeks (3/18, 3/25 and 4/1). The net meets on Sundays at 1800Z on or about 14.3035 MHz. We need someone or two or three to step up and take the job. It's not difficult. You should have a good station, perhaps with an amp and beam antenna. I do the net with 500W and a two element quad, for example. It's informal and open. Just put out the CQ and pick up the calls, names, QTHs and rig types (with s/n for the Elecraft radios). Ideally, you can later put out a list of the checkins to this reflector. It's fun and good experience. Any takers? Thank you. 73, Phil, NS7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Sticky feet
For more grip I have used rtv ( silicone ) we’ve all used it for so many things. Use the one for windshields it’s flowable so if you turn your rig upside down and level and coat the feet that should work. I need to try it too. I keep pushing my panadapter back when I push the display button. You can get stick on feet, they are usually silicone too. Put them next to the stock feet if they are tall enough or stick them on the stock feet or replace the stock feet with them. I’ve seen them at ham swaps and hardwares. Rich KC8HMJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Visalia sales?
Is it too early to ask what might be for sale at Visalia (maybe in P3 shaped boxes behind the table that one could take home)? Ralph, VE7XF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KX3 kit alignment just got easier
Hi all, We had originally intended to have KX3 kit builders perform some alignment steps that require a ham-band receiver and transmitter/ signal generator. But the KX3 is designed to appeal to first-time builders who may not have any ham gear at all, so we've decided to do this alignment at the factory on *all* KX3s. This will ensure consistent performance in all cases. Unfortunately it will also increase the workload for our manufacturing techs. Lyle and I have "interrupted our regular program" to write firmware to help automate and speed up some alignment procedures. All of the calibration procedures can still be performed manually, and will be documented in the Owner's Manual. They can be accomplished in the field if another 160-6 meter ham transceiver is available. 73, Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Thanks ELECRAFT
I am really pleased with the performance of my Elecraft gear and the great support that they provide. It is also impressive that they think of all the little things too. For example: -From comments that were made here on this list, I knew that I would have to make up a new power cord for my P3 after installing the SVGA board. When the new board is installed there is more than 500 mA of current required so the P3 can no longer be powered from the K3 power jack. When my new P3SVGA board arrived I was pleased to see that they had thought to INCLUDE a new P3 power cord. -I ordered one of the new power cords to run the KPA500 on 220 volts instead of 120 volts. I know my KPA500 kit came with both sets of fuses but of course I could not remember where I put the fuses for 220 volt operation. When the new power cord arrived it also INCLUDED a set of the correct fuses. Thanks ELECRAFT. You guys are AWSOME! 73, Bill - K6WLM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] W1 metallic enclosure
Bob, It's probably the enclosure made by Heinz HB9BCB. Some photos are at the bottom of my W1 page at http://udel.edu/~mm/ham/elecraft/w1/ Heinz did an excellent job on it and other Elecraft accessories! 73, Mike ab3ap On 03/15/2012 09:24 PM, k7hbg @dslextreme.com wrote: > Howdy Everyone; > > A few days ago someone provided a picture of a beautiful W1 metal > enclosure. > I can't find the e-mail containing this picture or link and was wondering > if somebody > here could give a bit of direction to this e-mail. > > Many thanks for any info! Bob, K7HBG __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] P3 Display Anomaly
Google "SeaSonde" ... I used to work within a few hundred yards of two of them ... one near Waldport, OR and one on Yaquina Head, OR. Both are housed in the utility areas of public bathrooms. (;-) I have numerous photos. There are hundreds of ionospheric sounders scattered all over the world. The NBS operates one behind one of the NBS buildings in Boulder, CO. Noise from Jupiter is common throughout the HF range and can sometimes seen in PSK waterfall displays. I used to work in radio astronomy, BTW 73! Ken - K0PP On Fri, Mar 16, 2012 at 1:11 AM, Simon Lewis wrote: > > They are chirpsounders - normally on SSB or CW you may hear a 'blip' as > they pass through > > using a pandapter you can see they whizzing up band visually! > > They are Ionospheric sounders mapping the layers. Quite useful tools. > > There are various radars and sounders also operating around 5-6 Mhz and 10 > MHz > > TIGER around the 10 MHz spectrum is another ionospheric sounds and you > will see various CODAR signals too (these are wave heights and direction > radars for weather) > > not very useful! with their broadband noisey signals. > > HF is a busy place even in these days of satellites and microwaves! > > Cheers > > Simon ZL4PLM > > > > > Check out more information on the world 50 MHz and Up : www.zl4plm.com > > > > > Date: Thu, 15 Mar 2012 20:04:43 -0500 > > From: estept...@gmail.com > > To: elecraft@mailman.qth.net > > Subject: Re: [Elecraft] P3 Display Anomaly > > > > On Thu, Mar 15, 2012 at 6:00 PM, Jim Bennett wrote: > > > ...Every so often, perhaps once every 20 - 40 seconds or so, I see > some sort of spur go flying across the screen. > > > > I see 'em too, Jim, and I know they're for real because I can hear > > them in my headphones. I don't know if you usually use headphones, but > > if you do I'm pretty sure you too will hear the spurs as they fly > > across. > > > > Some of these may be beacons. There are some beacons that sweep from > > low to high, with antennas that shoot straight up; they are used by > > NOAA or some agency (don't know which) to map the MUF. And of course > > there are many sources of pure garbage, such as those described by Jim > > W0EB in his interesting post. > > > > There are also innumerable sources of non-sweeping junk being radiated > > throughout the spectrum. I guess somebody knows what it all is, but I > > sure don't. One of the most irritating appears as a bunch of > > closely-spaced carriers that show up on the spectrum as a hump-shaped > > series of vertical lines, and sounds like a table-saw. I see this at > > various times and places on all bands. At my QTH one of these seems to > > come on whenever there's juicy but weak DX on 30 meters. > > > > Tony KT0NY > > > > > > > > -- > > http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352 > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 Display Anomaly
On Thu, Mar 15, 2012 at 8:11 PM, Simon Lewis wrote: > They are chirpsounders... = Ah yes, now I remember hearing that name. Thank you, Simon Those are the sweeping beacons I mentioned. Google on 'chirpsounder' and you'll find a strange world of propagation analysis stuff you may not have known about or imagined. Peter Martinez G3PLX, one of ham radio's resident geniuses (inventor of PSK), seems to have started the ball rolling with a software app and analytical framework. Others have built on it to create a number of esoteric tools to figure out what's going on up there in the sky. Of course, what Jim was hearing that prompted all this may be something different, like a faulty cable repeater, and may have nothing to do with chirpsounders. But some of the ones I hear definitely are. Tony KT0NY -- http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] W1 metallic enclosure
Howdy Everyone; A few days ago someone provided a picture of a beautiful W1 metal enclosure. I can't find the e-mail containing this picture or link and was wondering if somebody here could give a bit of direction to this e-mail. Many thanks for any info! Bob, K7HBG __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 Display Anomaly
They are chirpsounders - normally on SSB or CW you may hear a 'blip' as they pass through using a pandapter you can see they whizzing up band visually! They are Ionospheric sounders mapping the layers. Quite useful tools. There are various radars and sounders also operating around 5-6 Mhz and 10 MHz TIGER around the 10 MHz spectrum is another ionospheric sounds and you will see various CODAR signals too (these are wave heights and direction radars for weather) not very useful! with their broadband noisey signals. HF is a busy place even in these days of satellites and microwaves! Cheers Simon ZL4PLM Check out more information on the world 50 MHz and Up : www.zl4plm.com > Date: Thu, 15 Mar 2012 20:04:43 -0500 > From: estept...@gmail.com > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] P3 Display Anomaly > > On Thu, Mar 15, 2012 at 6:00 PM, Jim Bennett wrote: > > ...Every so often, perhaps once every 20 - 40 seconds or so, I see some > > sort of spur go flying across the screen. > > I see 'em too, Jim, and I know they're for real because I can hear > them in my headphones. I don't know if you usually use headphones, but > if you do I'm pretty sure you too will hear the spurs as they fly > across. > > Some of these may be beacons. There are some beacons that sweep from > low to high, with antennas that shoot straight up; they are used by > NOAA or some agency (don't know which) to map the MUF. And of course > there are many sources of pure garbage, such as those described by Jim > W0EB in his interesting post. > > There are also innumerable sources of non-sweeping junk being radiated > throughout the spectrum. I guess somebody knows what it all is, but I > sure don't. One of the most irritating appears as a bunch of > closely-spaced carriers that show up on the spectrum as a hump-shaped > series of vertical lines, and sounds like a table-saw. I see this at > various times and places on all bands. At my QTH one of these seems to > come on whenever there's juicy but weak DX on 30 meters. > > Tony KT0NY > > > > -- > http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352 > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 Display Anomaly
On Thu, Mar 15, 2012 at 6:00 PM, Jim Bennett wrote: > ...Every so often, perhaps once every 20 - 40 seconds or so, I see some sort > of spur go flying across the screen. I see 'em too, Jim, and I know they're for real because I can hear them in my headphones. I don't know if you usually use headphones, but if you do I'm pretty sure you too will hear the spurs as they fly across. Some of these may be beacons. There are some beacons that sweep from low to high, with antennas that shoot straight up; they are used by NOAA or some agency (don't know which) to map the MUF. And of course there are many sources of pure garbage, such as those described by Jim W0EB in his interesting post. There are also innumerable sources of non-sweeping junk being radiated throughout the spectrum. I guess somebody knows what it all is, but I sure don't. One of the most irritating appears as a bunch of closely-spaced carriers that show up on the spectrum as a hump-shaped series of vertical lines, and sounds like a table-saw. I see this at various times and places on all bands. At my QTH one of these seems to come on whenever there's juicy but weak DX on 30 meters. Tony KT0NY -- http://www.isb.edu/faculty/facultydir.aspx?ddlFaculty=352 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 Display Anomaly
On 3/15/2012 4:00 PM, Jim Bennett wrote: > Just wondering if I am the Lone Ranger here or if anyone else is > having this P3 "experience". Every so often, perhaps once every 20 - > 40 seconds or so, I see some sort of spur go flying across the > screen. It starts low and flies up in frequency, right off the > display. You're not the Lone Ranger, Kemosabe. I see it, not a spur for me, goes away without the antenna. I also see "moving humps", sorry, no other description, that drift from time to time, and generally upwards in frequency but not always. They go away with no antenna too. There's a whole lot of very weird electromagnetic radiation out there. I can see an ET or conspiracy theory developing here, I think I'll decline. And your use of "anomaly" conforms to NASA standards. It could be an inop indicator, or pointy part of the rocket in the sand somewhere south of Phoenix. A truly useful term. 73, Fred K6DGW - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KX3 dust covers and carrying cases
It's no surprise ... I've been getting many inquiries about dust covers and carrying cases for the KX3, and I've been shipping dust covers for a few weeks. Elecraft has loaned me an empty KX3 housing with knobs for use as a manikin to make the dust covers, and now I'm using it to make a prototype carrying case. The case is made along the lines of my K1, K2 and K3 cases and all that's left is to try several approaches to the interior of the case. The goal has been to house and protect the KX3 and provide space for accessories. The radio will be stowed vertically on (either) end, and there's space for a power cord, microphone, key and/or the paddle set and perhaps a wire antenna. Side and front pockets will be optional, as with my other cases. I'll be sending photos to Elecraft in a few days to get their "take" on the product and then I'll have the cases available. I'll be showing one at Visalia, of course. Stay tuned ... 73! Rose - N7HKW elecraftcov...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] P3SVGA
Just got the email with the tracking number for my SVGA board. At least now I have something new to play with until Wayne and the gang get the KAT500 tuner wrapped up and ready to ship. Hint-hint, would be nice if a preliminary drawing or picture of the unit were to be posted on the website so we can at least drool over it while waiting. ;-) Jim - W0EB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 Artifacts On The Waterfall Display
Hi Jack, If you take a screen shot, do they show there? 73, Paul -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Artifacts-On-The-Waterfall-Display-tp7377177p7377414.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] T/R switching
As I recall, 500 mV drop across a saturated 2N3906 is not unusual - I think all is well. 73, Don W3FPR On 3/15/2012 6:55 PM, picmas...@mail.bg wrote: > Hi Don, > > Thanks for your answer. The output of the 8V voltage regulator is just > perfect (for a 10% device) - 7.98V. I was wondering why I get 500mV > voltage drop across Q1& Q2, but if you say that's OK, then I'm fine. > > Slightly offtopic - I had also another failure of 2N7000 - again in Control > Board, > but this time Q5 (sidetone generation). I again made the temporary fix with > BJT+33k resistor, until I order a batch of 2N7000s. Next time I mount those > picky MOSFETs, I'll try to put a tiny bare wire across all the pins for temp > protection... > > 73, > Nikolay (LZ1NRD) > > - > Mail.bg: Безплатен e-mail адрес. Най-добрите характеристики на българския > пазар - 20 GB пощенска кутия, 1 GB прикрепен файл, безплатен POP3, мобилна > версия, SMS известяване и други. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 Display Anomaly
Disconnect your antenna, set the REF LVL on the P3 so you can see the background noise at the base of the display and watch it for a while. If you no longer see it, it isn't in the K3/P3 anywhere and is external to the radio. I have several "sweepers" that come through from time to time. One is somewhere in the neighborhood and the other is coming from a bad TV cable line amplifier on the pole outside my house. I'm having a heck of a time getting the cable company that it's their problem and they are liable for fixing it. I have gotten the local "fox hunt" group out and they confirm my findings and we know exactly which amp it is. I have spectrum pix of it using the image capture feature of the P3 with dates, times and frequencies. I filed a formal complaint with the FCC and sent them copies of all correspondence with the cable company, my spectrum analysis pictures and notarized affidavits from the fox hunt guys with their direction finding results. Hopefully that will get the same results I got with the power company. Had to file a formal complaint with the FCC on that one too, but now, they are all sweetness and light and whenever I call 'em they jump on the line noise problems as quick as they can free up a crew to clean/fix insulators in the neighborhood. Jim - W0EB > Just wondering if I am the Lone Ranger here or if anyone else is > having this P3 "experience". Every so often, perhaps once every 20 - > 40 seconds or so, I see some sort of spur go flying across the > screen. It starts low and flies up in frequency, right off the > display. With my display span set at 50 kHz below and 50 kHz above, > this "spur" takes only a second to cross the entire display range. > Not band dependent, either. My K3 is running on solar / battery > power, so it isn't something from my power supply. > > It isn't causing me a problem, just wondering if I have a "special" > K3/P3 or if this is common. > > Tnx, Jim / W6JHB > > > Jim Bennett > 224 American River Canyon Dr. > Folsom, CA 95630-7409 > > w6...@arrl.net > > Web: http://www.fil-am-sellers.com > > Being retired doesn't mean I'm not part of the work force - just > that I'm not forced to work! > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] T/R switching
Nickolay, Yes, anti-static measures are important when handling the 2N7000 (and many more devices. If you do not have a goo anti-static mat and a wrist strap, then shorting all pins together until after the device is soldered in place is a good preventative measure. 73, Don W3FPR On 3/15/2012 6:55 PM, picmas...@mail.bg wrote: > Hi Don, > > Thanks for your answer. The output of the 8V voltage regulator is just > perfect (for a 10% device) - 7.98V. I was wondering why I get 500mV > voltage drop across Q1& Q2, but if you say that's OK, then I'm fine. > > Slightly offtopic - I had also another failure of 2N7000 - again in Control > Board, > but this time Q5 (sidetone generation). I again made the temporary fix with > BJT+33k resistor, until I order a batch of 2N7000s. Next time I mount those > picky MOSFETs, I'll try to put a tiny bare wire across all the pins for temp > protection... > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA-500 high gain modification?
Another example, MARS operators are not governed by the FCC. Jack W4GRJ / AFA4DG On Mar 15, 2012, at 18:32, Oliver Dröse wrote: > Great Alan, nice idea with the manual! ;-)) > > Anyway, a very big part of this world's ham population is not bound to FCC > rules. So no need to make it public how to modify, just publish the > schematics or send them out on request without pointing out something and > Elecraft should be safe? > > My KPA500 is serving me very well on my remote station so also no chance to > take the PA apart again and have a look myself and just buying a second one > without knowing it is possible might be a bit too expensive to find out. > ;-)) But I would buy a second KPA500 in a heartbeat if I knew I could modify > it for 10 watts drive for full output! > > 73, Olli > > > > - Original Message - > From: "Alan Bloom" > To: "Oliver Dröse" > Cc: > Sent: Thursday, March 15, 2012 10:58 PM > Subject: Re: [Elecraft] KPA-500 high gain modification? > > >> On Thu, 2012-03-15 at 21:54 +0100, Oliver Dröse wrote: >> ... >>> Three big reasons I can think of that Elecraft does not want to release >>> the >>> schematics: >>> a.) To keep them hidden for the competition (quite understandable). >>> b.) It would probably put down sales of the KPA3 a bit (hmmm). >>> c.) If somebody modifies it themselves it will be almost impossible to >>> support it in case of problems (quite understandable, too). >> >> The other reason is they might get in trouble with the FCC if they make >> it too easy to modify. >> >> Many years ago when the CB craze was at its height, a manufacturer who >> shall remain nameless came out with a new transceiver. On page 1 of the >> manual was an illustration of the underside of the chassis with a big >> arrow pointing to a certain wire. "Do not cut this wire or the >> transceiver will transmit on 11 meters." >> >> They didn't get away with it. :=) >> >> Alan N1AL >> >> >> >> >> - >> eMail ist virenfrei. >> Von AVG überprüft - www.avg.de >> Version: 2012.0.1913 / Virendatenbank: 2114/4872 - Ausgabedatum: >> 15.03.2012 >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] P3 Display Anomaly
Just wondering if I am the Lone Ranger here or if anyone else is having this P3 "experience". Every so often, perhaps once every 20 - 40 seconds or so, I see some sort of spur go flying across the screen. It starts low and flies up in frequency, right off the display. With my display span set at 50 kHz below and 50 kHz above, this "spur" takes only a second to cross the entire display range. Not band dependent, either. My K3 is running on solar / battery power, so it isn't something from my power supply. It isn't causing me a problem, just wondering if I have a "special" K3/P3 or if this is common. Tnx, Jim / W6JHB Jim Bennett 224 American River Canyon Dr. Folsom, CA 95630-7409 w6...@arrl.net Web: http://www.fil-am-sellers.com Being retired doesn't mean I'm not part of the work force - just that I'm not forced to work! __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] T/R switching
Hi Don, Thanks for your answer. The output of the 8V voltage regulator is just perfect (for a 10% device) - 7.98V. I was wondering why I get 500mV voltage drop across Q1 & Q2, but if you say that's OK, then I'm fine. Slightly offtopic - I had also another failure of 2N7000 - again in Control Board, but this time Q5 (sidetone generation). I again made the temporary fix with BJT+33k resistor, until I order a batch of 2N7000s. Next time I mount those picky MOSFETs, I'll try to put a tiny bare wire across all the pins for temp protection... 73, Nikolay (LZ1NRD) - Mail.bg: Безплатен e-mail адрес. Най-добрите характеристики на българския пазар - 20 GB пощенска кутия, 1 GB прикрепен файл, безплатен POP3, мобилна версия, SMS известяване и други. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 External Speaker
Don, This has been a frequent request for the K2. The K2 internal speaker is just fine for a quiet room, but is lacking if the operator has hearing loss or the location is other than a "quiet room". I would suggest building an external amplified speaker. OTOH, you may find a set of computer speakers that will do the job as well. Unfortunately, many computer amplified speakers are not well shielded and will "do funny things" in the presence of RF Fields. 73, Don W3FPR On 3/15/2012 12:50 PM, Don Baucom wrote: > Any suggestions on a external speaker? I like the homebrew one that matches > the K2, but I would not be able to pull that off. > > 73 > > K4YND > Don > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] T/R switching
Sorry for the blank post, it was a "slip of the finger" problem. The 2N7000 is a great switching FET, but as you noticed is susceptible to ESD damage until it is mounted in its circuit, and then the static susceptibility is contained. As for your fix and substitution, measure the output of the 8 volt regulator - that is a 10% device, so anything between 7.2 and 8.8 volts is acceptable. Your 8T and 8R voltages should be within the range of 7.2 and 8.8 volts if all is well. I suspect that your substitution for the 2N7000 will work just fine in this particular case. 73, Don W3FPR On 3/15/2012 6:27 PM, Don Wilhelm wrote: > > > On 3/15/2012 12:26 PM, picmas...@mail.bg wrote: >> Hello fellow hams, >> >> One more K2 (#7293) was born this week in Europe - thanks to the >> Elecraft team for designing this kit and making it available for the >> ham crowd. >> >> The radio is now assembled, but I have small issues with the testing. >> During the initial testing on 40m reception the radio was almost deaf >> (even 7.3MHz AM stations were faint), and I found out that both 8R >> and 8T control lines were activated at the same time (thus enabling >> all attenuators). It turned out that Q3 (2N7000) on the Control Board >> was zapped and was pulling the base of Q1 low even without applied >> G-S voltage, thus activating erroneously the 8T line. I didn't had >> any spare 2N7000 parts around, so I had to invent a BJT-replacement >> for this low-power MOSFET, based on BC550C and 33K base resistor (you >> know, it's hard to buy spares in the night). The replacement worked >> OK, but I was wondering whether my circuit modification has changed >> the T/R control circuit voltages. I did a comparison between Q4's >> drain voltage (the healthy MOSFET) when ON and Q3's (now BC550C) >> collector voltage, and the results were 5mV on Q4's drain and 46mV on >> Q3's collector. To me even with the higher (45mV vs 5mV) saturation >> C-E voltage of BC550C, Q1 and Q2 switches will still be able to >> saturate properly when enabled. >> >> So my 1st question is why originally 2N7000 were used to control T/R >> switches (especially taking into account that these MOSFETs are very >> sensitive to ESD)? I'll also appreciate comments whether my T/R small >> modification looks acceptable. >> >> My 2nd question is what's the acceptable voltage on 8R& 8T control >> lines? I'm measuring around 7.5V on those control lines, while the K2 >> manual (rev.H1, p.114) says that the voltage should be 8V. While PIN >> attenuators and MOSFET switches should be rather insensitive to the >> 0.5V difference between the theoretical and practical values, there's >> a possibility for changes in the PA bias (although the current mirror >> and current steering circuit seems to keep the bias rather stable, at >> least on the schematic). >> >> Thanks in advance for your comments& responses. >> >> Regards, >> Nikolay (LZ1NRD) >> >> - >> Mail.bg: Безплатен e-mail адрес. Най-добрите характеристики на >> българския пазар - 20 GB пощенска кутия, 1 GB прикрепен файл, >> безплатен POP3, мобилна версия, SMS известяване и други. >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA-500 high gain modification?
Great Alan, nice idea with the manual! ;-)) Anyway, a very big part of this world's ham population is not bound to FCC rules. So no need to make it public how to modify, just publish the schematics or send them out on request without pointing out something and Elecraft should be safe? My KPA500 is serving me very well on my remote station so also no chance to take the PA apart again and have a look myself and just buying a second one without knowing it is possible might be a bit too expensive to find out. ;-)) But I would buy a second KPA500 in a heartbeat if I knew I could modify it for 10 watts drive for full output! 73, Olli - Original Message - From: "Alan Bloom" To: "Oliver Dröse" Cc: Sent: Thursday, March 15, 2012 10:58 PM Subject: Re: [Elecraft] KPA-500 high gain modification? > On Thu, 2012-03-15 at 21:54 +0100, Oliver Dröse wrote: > ... >> Three big reasons I can think of that Elecraft does not want to release >> the >> schematics: >> a.) To keep them hidden for the competition (quite understandable). >> b.) It would probably put down sales of the KPA3 a bit (hmmm). >> c.) If somebody modifies it themselves it will be almost impossible to >> support it in case of problems (quite understandable, too). > > The other reason is they might get in trouble with the FCC if they make > it too easy to modify. > > Many years ago when the CB craze was at its height, a manufacturer who > shall remain nameless came out with a new transceiver. On page 1 of the > manual was an illustration of the underside of the chassis with a big > arrow pointing to a certain wire. "Do not cut this wire or the > transceiver will transmit on 11 meters." > > They didn't get away with it. :=) > > Alan N1AL > > > > > - > eMail ist virenfrei. > Von AVG überprüft - www.avg.de > Version: 2012.0.1913 / Virendatenbank: 2114/4872 - Ausgabedatum: > 15.03.2012 > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] T/R switching
On 3/15/2012 12:26 PM, picmas...@mail.bg wrote: > Hello fellow hams, > > One more K2 (#7293) was born this week in Europe - thanks to the Elecraft > team for designing this kit and making it available for the ham crowd. > > The radio is now assembled, but I have small issues with the testing. During > the initial testing on 40m reception the radio was almost deaf (even 7.3MHz > AM stations were faint), and I found out that both 8R and 8T control lines > were activated at the same time (thus enabling all attenuators). It turned > out that Q3 (2N7000) on the Control Board was zapped and was pulling the base > of Q1 low even without applied G-S voltage, thus activating erroneously the > 8T line. I didn't had any spare 2N7000 parts around, so I had to invent a > BJT-replacement for this low-power MOSFET, based on BC550C and 33K base > resistor (you know, it's hard to buy spares in the night). The replacement > worked OK, but I was wondering whether my circuit modification has changed > the T/R control circuit voltages. I did a comparison between Q4's drain > voltage (the healthy MOSFET) when ON and Q3's (now BC550C) collector voltage, > and the results were 5mV on Q4's drain and 46mV on Q3's collector. To me even > with the higher (45mV vs 5mV) saturation C-E voltage of BC550C, Q1 and Q2 > switches will still be able to saturate properly when enabled. > > So my 1st question is why originally 2N7000 were used to control T/R switches > (especially taking into account that these MOSFETs are very sensitive to > ESD)? I'll also appreciate comments whether my T/R small modification looks > acceptable. > > My 2nd question is what's the acceptable voltage on 8R& 8T control lines? > I'm measuring around 7.5V on those control lines, while the K2 manual > (rev.H1, p.114) says that the voltage should be 8V. While PIN attenuators and > MOSFET switches should be rather insensitive to the 0.5V difference between > the theoretical and practical values, there's a possibility for changes in > the PA bias (although the current mirror and current steering circuit seems > to keep the bias rather stable, at least on the schematic). > > Thanks in advance for your comments& responses. > > Regards, > Nikolay (LZ1NRD) > > - > Mail.bg: Безплатен e-mail адрес. Най-добрите характеристики на българския > пазар - 20 GB пощенска кутия, 1 GB прикрепен файл, безплатен POP3, мобилна > версия, SMS известяване и други. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 External Speaker
Hi Don, Before you go to external spkr, try a speaker deflector on the top of the K2. A 2" PVC street elbow (female to female) works very well, especially for cw side tone. It makes a big difference to have the sound directed at your head rather than straight up in the air. If you like how it works, you can spray it gray for a closer color match. 73, Mike/ac5p --- On Thu, 3/15/12, Don Baucom wrote: From: Don Baucom Subject: [Elecraft] K2 External Speaker To: elecraft@mailman.qth.net Date: Thursday, March 15, 2012, 11:50 AM Any suggestions on a external speaker? I like the homebrew one that matches the K2, but I would not be able to pull that off. 73 K4YND Don -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-External-Speaker-tp7376263p7376263.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA-500 high gain modification?
On Thu, 2012-03-15 at 21:54 +0100, Oliver Dröse wrote: ... > Three big reasons I can think of that Elecraft does not want to release the > schematics: > a.) To keep them hidden for the competition (quite understandable). > b.) It would probably put down sales of the KPA3 a bit (hmmm). > c.) If somebody modifies it themselves it will be almost impossible to > support it in case of problems (quite understandable, too). The other reason is they might get in trouble with the FCC if they make it too easy to modify. Many years ago when the CB craze was at its height, a manufacturer who shall remain nameless came out with a new transceiver. On page 1 of the manual was an illustration of the underside of the chassis with a big arrow pointing to a certain wire. "Do not cut this wire or the transceiver will transmit on 11 meters." They didn't get away with it. :=) Alan N1AL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] P3 Artifacts On The Waterfall Display
I have noticed that there are several white lines showing in the waterfall display that do not move when I change frequency. Some are fuzzy and some are well defined narrow lines. All these lines are vertical and would appear to be signals except that when I tune toward the signal they never change their position on the display. Real signals can be tuned into and the waterfall shows their change to the center of the display. It is really noticeable on 10 20 and 50 but does not seem to be happening at all on 15 and 40. The rest of the bands have the problem to a lesser degree. Any ideas? Jack AE6GC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 travel/portable protection
David, If your concern is greater during travel, then may I suggest the covers by Rose Kopp. They are dust covers (and thus are not waterproof), but they not only look great, but pad the KX3 quite nicely. If you need something waterproof, may I suggest a pelican case. A "quick and dirty" solution to the waterproofing cover without the pelican case is a gallon size freezer "Zip-Loc" bag (or other acceptable brand. 73, Don W3FPR On 3/15/2012 5:14 PM, David Stratton wrote: > It would be nice if someone would develop > > a rubber like slip-on covering for the KX3 > > like they have for multi-meters. It would > > need openings in the appropriate places and > > lettering for the opening designations that it > > covers up. Also nice would be a mating plastic > > snap-on cover (clear?) that fits over the display > > and controls. All this would help keep the KX3 from > > damage because the smaller and more portable > > a radio is the more likely it could suffer damage > > during travel/portable operations. > > > > Dave - KO4KL > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Filters For Sale UK/Europe
KFLA3A-2.1K 2.1kHz filter and KFLA3A-1.8K 1.8kHz filter, boxed. £80 each. Free postage within UK, £5 within Europe. Contact Paul M0CVX paul.bradbe...@ntlworld.com 73 Paul __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA500 For Sale within UK
Selling my immaculate KPA500 serial number 0345 (Aug 2011) and KPAK3AUX Cable Set. £1300, buyer inspects (test welcome) and collects from my home in Lincoln. Do the maths, and save close to £400... Contact Paul M0CVX paul.bradbe...@ntlworld.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X book discount code
Even without the coupon the book is still a bargain. Thanks Fred! 73, Bob K2TK On 3/15/2012 4:24 PM, Matt Maguire wrote: > You can get a 20% discount during the whole month of March using the code: > MARBOOKS12 > > 73, Matt VK2ACL > > On 16/03/2012, at 1:50 AM, Cady, Fred wrote: > >> Just arrived in my mailbox: >> 20% discount today only (until 11:59 PM). Something about the Irish??? >> (Hi Doug!) :-) >> Use the code GIANTSHAMROCK. >> For more information, head to www.ke7x.com. >> 73, >> Fred, KE7X >> >> Fred Cady >> "The Elecraft K3: Design, Configuration, and Operation" >> www.ke7x.com >> >> >>> -Original Message- >>> From: elecraft-boun...@mailman.qth.net [mailto:elecraft- >>> boun...@mailman.qth.net] On Behalf Of Vic K2VCO >>> Sent: Wednesday, March 14, 2012 2:57 PM >>> To: Elecraft Reflector >>> Subject: [Elecraft] KE7X book discount code >>> >>> Is there an active discount code to buy the KE7X K3 book at Lulu? >>> >>> -- >>> Vic, K2VCO >>> Fresno CA >>> http://www.qsl.net/k2vco/ >>> >>> __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KX3 travel/portable protection
It would be nice if someone would develop a rubber like slip-on covering for the KX3 like they have for multi-meters. It would need openings in the appropriate places and lettering for the opening designations that it covers up. Also nice would be a mating plastic snap-on cover (clear?) that fits over the display and controls. All this would help keep the KX3 from damage because the smaller and more portable a radio is the more likely it could suffer damage during travel/portable operations. Dave - KO4KL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 12VDC OUT increased current mod available soon
On 3/15/2012 3:13 PM, Wayne Burdick wrote: > The only easy thing to change in this regard is the 1N4007. It > probably drops close to a volt, and could be replaced with a 1N5817, > etc. That would minimize the drop but is D34 even necessary? You already have a shunt diode (D35) across the supply side of the fuse that should protect the K3 if the user applies negative voltage to the 12V Out. 73, ... Joe, W4TV On 3/15/2012 3:13 PM, Wayne Burdick wrote: > The only easy thing to change in this regard is the 1N4007. It probably > drops close to a volt, and could be replaced with a 1N5817, etc. But if > you want to pull more current, you also have to change the choke and the > self-resetting fuse. We're working on that. > > Wayne > > On Mar 15, 2012, at 11:53 AM, Joe Subich, W4TV wrote: > >> >> Instead of simply raising the current limit, you should be addressing >> the voltage issues as well. With 1.7V (SB530 and 1N4007) of diode >> drop plus I^2*R losses in two chokes and the switch, the "+12V" is >> already low (11.8V) with a 13.8V supply. Run the K3 on battery or >> figure in a typical 0.8V-1.2V sag in the input supply in transmit and >> the "+12V" output is less than 10.5V. >> >> 73, >> >> ... Joe, W4TV >> >> >> On 3/15/2012 12:18 PM, Paul Saffren N6HZ wrote: >>> Many of you have asked if there is a way to modify your K3 so that it >>> can >>> provide enough current to supply a P3 with the SVGA board. We are >>> currently >>> working on a mod kit that will do just that. We'll let you know as >>> soon as >>> we have something available. >>> >>> >>> 73, >>> >>> Paul (n6hz) >>> >>> >>> -- >>> View this message in context: >>> http://elecraft.365791.n2.nabble.com/K3-12VDC-OUT-increased-current-mod-available-soon-tp7376146p7376146.html >>> >>> Sent from the Elecraft mailing list archive at Nabble.com. >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X Book inexpensive in EI and UK & perhaps EU
This might get you a discount on a "K-line" button. W On Mar 15, 2012, at 2:08 PM, Keith Heimbold wrote: > I am writing the names down for a second K3. > > Keith > AG6AZ > > Sent from my iPhone please excuse typos > > On Mar 15, 2012, at 2:05 PM, "Wayne Burdick" > wrote: > >> Vic K2VCO wrote: >> >>> Imagine if Elecraft gave you 20% off a K3 for knowing the name of >>> Wayne's cats. >> >> Luna and Apollo. (Just in case :) >> >> Wayne >> N6KR >> >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X Book inexpensive in EI and UK & perhaps EU
I am writing the names down for a second K3. Keith AG6AZ Sent from my iPhone please excuse typos On Mar 15, 2012, at 2:05 PM, "Wayne Burdick" wrote: > Vic K2VCO wrote: > >> Imagine if Elecraft gave you 20% off a K3 for knowing the name of >> Wayne's cats. > > Luna and Apollo. (Just in case :) > > Wayne > N6KR > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X Book inexpensive in EI and UK & perhaps EU
Vic K2VCO wrote: > Imagine if Elecraft gave you 20% off a K3 for knowing the name of > Wayne's cats. Luna and Apollo. (Just in case :) Wayne N6KR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X Book inexpensive in EI and UK & perhaps EU
OK, it's WAY off-topic, but this is one of the most annoying marketing gimmicks imaginable. Imagine if Elecraft gave you 20% off a K3 for knowing the name of Wayne's cat. On 3/15/2012 1:45 PM, Matt Maguire wrote: > The discount code MARBOOKS12 also gives you 20% discount, and is valid for > the whole > month of March. > > 73, Matt VK2ACL. > > On 16/03/2012, at 4:33 AM, Doug Turnbull wrote: >> Remember the discount code: GIANTSHAMROCK. I believe you need to use this >> before >> 12 PM today March 15; they should have kept the offer open till the end of >> the 17th. >> >> Happy St. Patrick's day to all. >> >> 73 Doug EI2CN Vic, K2VCO Fresno CA http://www.qsl.net/k2vco/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA-500 high gain modification?
I second that request! Would be really handy ... Sorrily still no schematics available on the Elecraft website, otherwise I would already have looked for myself. Three big reasons I can think of that Elecraft does not want to release the schematics: a.) To keep them hidden for the competition (quite understandable). b.) It would probably put down sales of the KPA3 a bit (hmmm). c.) If somebody modifies it themselves it will be almost impossible to support it in case of problems (quite understandable, too). Maybe we need to sign a special document freeing Elecraft of all responsibilities and tighting ourselves to non-disclosure to get the schematics. ;-)) Vy 73, Olli - DH8BQA http://www.dh8bqa.de/ - Original Message - From: "Arunas LY2IJ" To: Sent: Thursday, March 15, 2012 7:42 PM Subject: [Elecraft] KPA-500 high gain modification? > Hi, > > Is it any simple way to modify KPA to drive full power > with KX3? I see VRF2933 have minimum 20 dB gain. > Looks like killer combination. > > I know there is some PA gain rectrictions in US, but > many of us are not covered by it ;) > > 73 > Arunas LY2IJ > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > - > eMail ist virenfrei. > Von AVG uberpruft - www.avg.de > Version: 2012.0.1913 / Virendatenbank: 2114/4870 - Ausgabedatum: > 14.03.2012 > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X Book inexpensive in EI and UK & perhaps EU
The discount code MARBOOKS12 also gives you 20% discount, and is valid for the whole month of March. 73, Matt VK2ACL. On 16/03/2012, at 4:33 AM, Doug Turnbull wrote: > Hi All, >Just a short note for all regarding Fred Cady's fine K3 book which very > nicely augments the K3 manual. I just ordered another copy for a UK based > friend and with shipping this book cost just €24.38. The shipping costs by > priority mail are only €3.46 which for a 288 page tomb is not bad at all. > There is no VAT on books in the Land of Saints and Scholars so I do not have > to cope with this added expense. Normally the delivery is two or three > weeks to EU and I think my first copy arrived within less than ten days. > The book is informative, good value and the shipping is not dear at least for > EI and G. > > Remember the discount code: GIANTSHAMROCK. I believe you need to use > this before 12 PM today March 15; they should have kept the offer open till > the end of the 17th. > > Happy St. Patrick's day to all. > > 73 Doug EI2CN > > > Subject: Re: [Elecraft] KE7X book discount code > > Just arrived in my mailbox: > 20% discount today only (until 11:59 PM). Something about the Irish??? > (Hi Doug!) :-) > Use the code GIANTSHAMROCK. > For more information, head to www.ke7x.com. > 73, > Fred, KE7X > > Fred Cady > "The Elecraft K3: Design, Configuration, and Operation" > www.ke7x.com > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KPA has FAILED...high SWR reported by K3 when amp in "Operate"
Excellent response from service with an RF unit on the way...appeared not to be switching into the transmit mode when in "operate". - Chuck, KE9UW -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA-has-FAILED-high-SWR-reported-by-K3-when-amp-in-Operate-tp7371793p7377011.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X book discount code
You can get a 20% discount during the whole month of March using the code: MARBOOKS12 73, Matt VK2ACL On 16/03/2012, at 1:50 AM, Cady, Fred wrote: > Just arrived in my mailbox: > 20% discount today only (until 11:59 PM). Something about the Irish??? > (Hi Doug!) :-) > Use the code GIANTSHAMROCK. > For more information, head to www.ke7x.com. > 73, > Fred, KE7X > > Fred Cady > "The Elecraft K3: Design, Configuration, and Operation" > www.ke7x.com > > >> -Original Message- >> From: elecraft-boun...@mailman.qth.net [mailto:elecraft- >> boun...@mailman.qth.net] On Behalf Of Vic K2VCO >> Sent: Wednesday, March 14, 2012 2:57 PM >> To: Elecraft Reflector >> Subject: [Elecraft] KE7X book discount code >> >> Is there an active discount code to buy the KE7X K3 book at Lulu? >> >> -- >> Vic, K2VCO >> Fresno CA >> http://www.qsl.net/k2vco/ >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 12VDC OUT increased current mod available soon
The only easy thing to change in this regard is the 1N4007. It probably drops close to a volt, and could be replaced with a 1N5817, etc. But if you want to pull more current, you also have to change the choke and the self-resetting fuse. We're working on that. Wayne On Mar 15, 2012, at 11:53 AM, Joe Subich, W4TV wrote: > > Instead of simply raising the current limit, you should be addressing > the voltage issues as well. With 1.7V (SB530 and 1N4007) of diode > drop plus I^2*R losses in two chokes and the switch, the "+12V" is > already low (11.8V) with a 13.8V supply. Run the K3 on battery or > figure in a typical 0.8V-1.2V sag in the input supply in transmit and > the "+12V" output is less than 10.5V. > > 73, > >... Joe, W4TV > > > On 3/15/2012 12:18 PM, Paul Saffren N6HZ wrote: >> Many of you have asked if there is a way to modify your K3 so that >> it can >> provide enough current to supply a P3 with the SVGA board. We are >> currently >> working on a mod kit that will do just that. We'll let you know as >> soon as >> we have something available. >> >> >> 73, >> >> Paul (n6hz) >> >> >> -- >> View this message in context: >> http://elecraft.365791.n2.nabble.com/K3-12VDC-OUT-increased-current-mod-available-soon-tp7376146p7376146.html >> Sent from the Elecraft mailing list archive at Nabble.com. >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] switching a heath amp
May be worth the additional key relay,, my Kenwood TL 922 quit and I can barely move it let alone try to repair it,,, Not sure what to do wit it but that is another story I keyed another SB200 with an ICOM rig and built a little 5 volt key relay but it used an external wall wart. I may dig up a 9 volt relay and key it using a 9 v battery may pick up a heath SB220 fer 60 bux from a local shouldnt be able to tell the diff 600 v 1200 watts Bob K3DJC On Thu, 15 Mar 2012 14:28:14 -0400 Tom Azlin N4ZPT writes: > Hi Don and Bob, > > One alternative is to put in a mod to the Heathkit amp. > > http://www.harbachelectronics.com/main/page_products_sb200__sb201.html > > I put one of the soft key mods into my SB-200. Easy to put in and > works > nicely. > > 73, tom n4zpt > > > On 3/15/2012 2:07 PM, Don Wilhelm wrote: > > Bob, > > > > If that voltage is for certain positive, the answer is yes, the > K3 > > will switch it, but if it is negative, connect your other relay. > > > > 73, Don W3FPR > > > > On 3/15/2012 1:12 PM, riese-k3...@juno.com wrote: > >> Gang > >> > >> the heath series of amps use bial voltage to switch the thing > from > >> T/R and That amounts to 130 +- volts would the K3 be Ok > switching > >> this or should I look to add an additional relay and switch that > >> > >> Bob K3DJC > >> __ > >> Elecraft mailing list Home: > >> http://mailman.qth.net/mailman/listinfo/elecraft Help: > >> http://mailman.qth.net/mmfaq.htm Post: > >> mailto:Elecraft@mailman.qth.net > >> > >> This list hosted by: http://www.qsl.net Please help support this > >> email list: http://www.qsl.net/donate.html > >> > > __ > > Elecraft mailing list Home: > > http://mailman.qth.net/mailman/listinfo/elecraft Help: > > http://mailman.qth.net/mmfaq.htm Post: > > mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net Please help support this > > email list: http://www.qsl.net/donate.html > > > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 12VDC OUT increased current mod available soon
Instead of simply raising the current limit, you should be addressing the voltage issues as well. With 1.7V (SB530 and 1N4007) of diode drop plus I^2*R losses in two chokes and the switch, the "+12V" is already low (11.8V) with a 13.8V supply. Run the K3 on battery or figure in a typical 0.8V-1.2V sag in the input supply in transmit and the "+12V" output is less than 10.5V. 73, ... Joe, W4TV On 3/15/2012 12:18 PM, Paul Saffren N6HZ wrote: > Many of you have asked if there is a way to modify your K3 so that it can > provide enough current to supply a P3 with the SVGA board. We are currently > working on a mod kit that will do just that. We'll let you know as soon as > we have something available. > > > 73, > > Paul (n6hz) > > > -- > View this message in context: > http://elecraft.365791.n2.nabble.com/K3-12VDC-OUT-increased-current-mod-available-soon-tp7376146p7376146.html > Sent from the Elecraft mailing list archive at Nabble.com. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 SVGA
Mine came yesterday. Is installed and working with power from a 1 amp position on the station power strip. I am using one of my older displays at 1024x768 and still very nice. Will swap in one of my other wide displays later that has multiple inputs. Picture in Picture might be nice here. Or might pick up an SVGA frame grabber and see if I can stream the P3 video. I think I would like to be able to switch the filter marker to the U that I like on the main P3 display. Also seems that the display calibration is off by about 5 dB from the main P3 display so need to go read about calibration. result is that if the main P3 display is nice looking the waterfall on the external monitor looks too light as I can not see signals I am copying just fine. Otherwise very nice. 73, tom n4zpt On 3/12/2012 9:36 PM, Ed Schuller wrote: > As noted by others, it went together very quickly. The only downside that I > can > see is that it no longer is powered on and off by my K3. I built a small > circuit > that is driven by the K3's external 12V output (that used to power the P3), > that > now switches the power to the P3. Easy fix, but would have been nice to not > need > the extra stuff. However, I will say that the large screen is pretty > coolgreat resolution, and it's BIG!!! > > 73, > Ed - K6CTA > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KPA-500 high gain modification?
Hi, Is it any simple way to modify KPA to drive full power with KX3? I see VRF2933 have minimum 20 dB gain. Looks like killer combination. I know there is some PA gain rectrictions in US, but many of us are not covered by it ;) 73 Arunas LY2IJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] switching a heath amp
> If that voltage is for certain positive, the answer is yes, the K3
> will switch it, but if it is negative, connect your other relay.
The problem is that many "high voltage" amplifiers have significant
relay current and no current limiting or reverse EMF ('catch") diode
and often exhibit a large *negative* spike when the relay opens.
An external relay or a "buffer" like Ampkeyer, Ameritron ARB-704,
WB9KZY "Keyall", etc. is a good insurance policy. A relay or buffer
is required with any negative voltage (SB-200, FL-2100, FL-2100B, etc.)
key lines.
73,
... Joe, W4TV
On 3/15/2012 2:07 PM, Don Wilhelm wrote:
> Bob,
>
> If that voltage is for certain positive, the answer is yes, the K3 will
> switch it, but if it is negative, connect your other relay.
>
> 73,
> Don W3FPR
>
> On 3/15/2012 1:12 PM, riese-k3...@juno.com wrote:
>> Gang
>>
>> the heath series of amps use bial voltage to switch the thing from T/R
>> and That amounts to 130 +- volts
>> would the K3 be Ok switching this or should I look to add an additional
>> relay
>> and switch that
>>
>> Bob K3DJC
>> __
>> Elecraft mailing list
>> Home: http://mailman.qth.net/mailman/listinfo/elecraft
>> Help: http://mailman.qth.net/mmfaq.htm
>> Post: mailto:Elecraft@mailman.qth.net
>>
>> This list hosted by: http://www.qsl.net
>> Please help support this email list: http://www.qsl.net/donate.html
>>
> __
> Elecraft mailing list
> Home: http://mailman.qth.net/mailman/listinfo/elecraft
> Help: http://mailman.qth.net/mmfaq.htm
> Post: mailto:Elecraft@mailman.qth.net
>
> This list hosted by: http://www.qsl.net
> Please help support this email list: http://www.qsl.net/donate.html
>
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted by: http://www.qsl.net
Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] switching a heath amp
Hi Don and Bob, One alternative is to put in a mod to the Heathkit amp. http://www.harbachelectronics.com/main/page_products_sb200__sb201.html I put one of the soft key mods into my SB-200. Easy to put in and works nicely. 73, tom n4zpt On 3/15/2012 2:07 PM, Don Wilhelm wrote: > Bob, > > If that voltage is for certain positive, the answer is yes, the K3 > will switch it, but if it is negative, connect your other relay. > > 73, Don W3FPR > > On 3/15/2012 1:12 PM, riese-k3...@juno.com wrote: >> Gang >> >> the heath series of amps use bial voltage to switch the thing from >> T/R and That amounts to 130 +- volts would the K3 be Ok switching >> this or should I look to add an additional relay and switch that >> >> Bob K3DJC >> __ >> Elecraft mailing list Home: >> http://mailman.qth.net/mailman/listinfo/elecraft Help: >> http://mailman.qth.net/mmfaq.htm Post: >> mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net Please help support this >> email list: http://www.qsl.net/donate.html >> > __ > Elecraft mailing list Home: > http://mailman.qth.net/mailman/listinfo/elecraft Help: > http://mailman.qth.net/mmfaq.htm Post: > mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this > email list: http://www.qsl.net/donate.html > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X Book inexpensive in EI and UK & perhaps EU
The book rules!!! I used it for getting digital running with my rigblaster and I am now rocking. Thanks, Fred! Keith AG6AZ Sent from my iPhone please excuse typos __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X Book inexpensive in EI and UK & perhaps EU
I would like to add that I bought the book a month or so ago, and it is really a terrifically useful and well-produced guide to getting the most out of your K3. Fred has done an outstanding, and very professional job on it. Highly recommended. 73, andy ae6y -Original Message- From: Doug Turnbull Sent: Thursday, March 15, 2012 10:33 AM To: 'Cady, Fred' ; 'Vic K2VCO' ; 'Elecraft Reflector' Subject: [Elecraft] KE7X Book inexpensive in EI and UK & perhaps EU Hi All, Just a short note for all regarding Fred Cady's fine K3 book which very nicely augments the K3 manual. I just ordered another copy for a UK based friend and with shipping this book cost just €24.38. The shipping costs by priority mail are only €3.46 which for a 288 page tomb is not bad at all. There is no VAT on books in the Land of Saints and Scholars so I do not have to cope with this added expense. Normally the delivery is two or three weeks to EU and I think my first copy arrived within less than ten days. The book is informative, good value and the shipping is not dear at least for EI and G. Remember the discount code: GIANTSHAMROCK. I believe you need to use this before 12 PM today March 15; they should have kept the offer open till the end of the 17th. Happy St. Patrick's day to all. 73 Doug EI2CN Subject: Re: [Elecraft] KE7X book discount code Just arrived in my mailbox: 20% discount today only (until 11:59 PM). Something about the Irish??? (Hi Doug!) :-) Use the code GIANTSHAMROCK. For more information, head to www.ke7x.com. 73, Fred, KE7X Fred Cady "The Elecraft K3: Design, Configuration, and Operation" www.ke7x.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] newbie setup questions on memory editor & repeater setup
Hi Julie, I have not seen another list response. Perhaps you got direct responses? The split mode is not necessary for a repeater. See page 29 of the manual. I dial in the repeater on one of the VFOs, switch to FM mode, then push the Alt key ( hold down mode key) multiple times until it switches to the + or - offset I want. When I key the mike the VFO displays the offset transmit freq then goes back to the receive freq when I let off the PTT. Separately is an offset setting but as I remember it was defaulted correctly. The squelch on my K3 is the RF/SQL knob. Setup on page 53 or around there. 73, tom n4zpt On 3/14/2012 4:51 PM, Julie Royster wrote: > Hi from KT4JR, wife of K4MWE, and new co-owner of a K3 with 144mHz > transverter built in. I have not been able to understand how > repeaters are supposed to be set up and I am hoping some kind spirit > out there can clarify for me. > > I have entered the repeater frequency in the VFO A cell of the memory > editor on the computer. I have selected FM so that offset and PL tone > choices appear next to the VFO B cell. I can put in the offset and PL > tone, but do I enter a frequency in the VFO B cell? I can't tell > whether the program would apply the offset to the VFO A frequency or > to the VFO B frequency, so I don't know whether to put the same entry > in A and in B, put the actual transmit frequency in B, leave B > blank, or what. > > Say we have a repeater with VFO A frequency at 145.20 mHz and a > negative offset of 0.6 mHz. So my transmit frequency needs to be > 144.60 > > What should my table row look like? What goes in the VFO B cell? > > Name VFO AVFO BoffsetPL tone ABC club 145.20 > _-0.6 82.5 > > A related question (why I can't figure out the above) is where on the > K3 I could actually see the result. Is there some way I can display > the frequency I am transmitting on using the display screen of the > K3? > > Do I need to set the K3 to split before using a repeater, in addition > to setting the above? > > If there is a pre-fab dummy guide for repeater set-up, please point > me toward it! > > Finally, I have not figured out the squelch yet either. is there a > set-up guide for squelch? > > Clearly this radio is amazingly flexible, and I need to keep on > studying! THANKS for your help! Julie KT4JR in Raleigh, NC > > __ > Elecraft mailing list Home: > http://mailman.qth.net/mailman/listinfo/elecraft Help: > http://mailman.qth.net/mmfaq.htm Post: > mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net Please help support this > email list: http://www.qsl.net/donate.html > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 SVGA Frequency Display
OK, I don't have the P3SVGA, but on the P3 itself, there are two choices for font ... big and little ... and it changes everything on the display. The SVGA is just a video interface if I understand correctly, I'd guess it follows the content of the P3 screen. 73, Fred K6DGW - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org On 3/15/2012 2:41 AM, Doug Turnbull wrote: > Is it possible to set the P3SVGA font differently than the P3 font? > This would certainly be a help. My P3SVGA is not yet with me. > >73 Doug EI2CN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] switching a heath amp
Bob, If that voltage is for certain positive, the answer is yes, the K3 will switch it, but if it is negative, connect your other relay. 73, Don W3FPR On 3/15/2012 1:12 PM, riese-k3...@juno.com wrote: > Gang > > the heath series of amps use bial voltage to switch the thing from T/R > and That amounts to 130 +- volts > would the K3 be Ok switching this or should I look to add an additional > relay > and switch that > > Bob K3DJC > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 12VDC OUT increased current mod available soon
That's great news Paul. I will certainly get that kit and mod my K3. 73, tom n4zpt On 3/15/2012 12:18 PM, Paul Saffren N6HZ wrote: > Many of you have asked if there is a way to modify your K3 so that it can > provide enough current to supply a P3 with the SVGA board. We are currently > working on a mod kit that will do just that. We'll let you know as soon as > we have something available. > > > 73, > > Paul (n6hz) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] switching a heath amp
I used the K3 to switch my SB-220 backup amp (+130 VDC) a couple months ago. It worked fine through an entire contest. The K3 spec is +200 VDC at 5 amps. I did put a reverse diode across the relay line to prevent the possibility of negative inductive kickback. Actually, I put the diode right at the K3 via an RCA wye with the diode soldered across one leg of the wye. It was an emergency deal, but it worked fb. Dave Hachadorian, K6LL Yuma, Arizona -Original Message- From: riese-k3...@juno.com Sent: Thursday, March 15, 2012 10:12 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] switching a heath amp Gang the heath series of amps use bial voltage to switch the thing from T/R and That amounts to 130 +- volts would the K3 be Ok switching this or should I look to add an additional relay and switch that Bob K3DJC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 12VDC OUT increased current mod available soon
You guys are good! 73 Doug EI2CN -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul Saffren N6HZ Sent: 15 March 2012 16:19 To: elecraft@mailman.qth.net Subject: [Elecraft] K3 12VDC OUT increased current mod available soon Many of you have asked if there is a way to modify your K3 so that it can provide enough current to supply a P3 with the SVGA board. We are currently working on a mod kit that will do just that. We'll let you know as soon as we have something available. 73, Paul (n6hz) -- __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] KE7X Book inexpensive in EI and UK & perhaps EU
Hi All, Just a short note for all regarding Fred Cady's fine K3 book which very nicely augments the K3 manual. I just ordered another copy for a UK based friend and with shipping this book cost just €24.38. The shipping costs by priority mail are only €3.46 which for a 288 page tomb is not bad at all. There is no VAT on books in the Land of Saints and Scholars so I do not have to cope with this added expense. Normally the delivery is two or three weeks to EU and I think my first copy arrived within less than ten days. The book is informative, good value and the shipping is not dear at least for EI and G. Remember the discount code: GIANTSHAMROCK. I believe you need to use this before 12 PM today March 15; they should have kept the offer open till the end of the 17th. Happy St. Patrick's day to all. 73 Doug EI2CN Subject: Re: [Elecraft] KE7X book discount code Just arrived in my mailbox: 20% discount today only (until 11:59 PM). Something about the Irish??? (Hi Doug!) :-) Use the code GIANTSHAMROCK. For more information, head to www.ke7x.com. 73, Fred, KE7X Fred Cady "The Elecraft K3: Design, Configuration, and Operation" www.ke7x.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] switching a heath amp
Gang the heath series of amps use bial voltage to switch the thing from T/R and That amounts to 130 +- volts would the K3 be Ok switching this or should I look to add an additional relay and switch that Bob K3DJC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 External Speaker
Any suggestions on a external speaker? I like the homebrew one that matches the K2, but I would not be able to pull that off. 73 K4YND Don -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-External-Speaker-tp7376263p7376263.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Make the Feet "Stickier"
Bob, I had forgotten about that option. I have a subreceiver in my K3, and it certainly doesn't move around on the desk like it used to. Even better, it will certainly help Elecraft's sales, if everyone buys a sub for their K3. A brilliant suggestion. 73, -- Dave, N8SBE > Original Message > Subject: Re: [Elecraft] Make the Feet "Stickier" > From: Bob Wolbert > Date: Wed, March 14, 2012 3:59 pm > To: elecraft@mailman.qth.net > > > Once the subreceivers were added, the > combined weight is just about perfect, as long as the cleaning crew (me) > dusts the shack occasionally. > > > Regards, > > Bob Wolbert > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [K2] T/R switching
Hello fellow hams, One more K2 (#7293) was born this week in Europe - thanks to the Elecraft team for designing this kit and making it available for the ham crowd. The radio is now assembled, but I have small issues with the testing. During the initial testing on 40m reception the radio was almost deaf (even 7.3MHz AM stations were faint), and I found out that both 8R and 8T control lines were activated at the same time (thus enabling all attenuators). It turned out that Q3 (2N7000) on the Control Board was zapped and was pulling the base of Q1 low even without applied G-S voltage, thus activating erroneously the 8T line. I didn't had any spare 2N7000 parts around, so I had to invent a BJT-replacement for this low-power MOSFET, based on BC550C and 33K base resistor (you know, it's hard to buy spares in the night). The replacement worked OK, but I was wondering whether my circuit modification has changed the T/R control circuit voltages. I did a comparison between Q4's drain voltage (the healthy MOSFET) when ON and Q3's (now BC550C) collector voltage, and the results were 5mV on Q4's drain and 46mV on Q3's collector. To me even with the higher (45mV vs 5mV) saturation C-E voltage of BC550C, Q1 and Q2 switches will still be able to saturate properly when enabled. So my 1st question is why originally 2N7000 were used to control T/R switches (especially taking into account that these MOSFETs are very sensitive to ESD)? I'll also appreciate comments whether my T/R small modification looks acceptable. My 2nd question is what's the acceptable voltage on 8R & 8T control lines? I'm measuring around 7.5V on those control lines, while the K2 manual (rev.H1, p.114) says that the voltage should be 8V. While PIN attenuators and MOSFET switches should be rather insensitive to the 0.5V difference between the theoretical and practical values, there's a possibility for changes in the PA bias (although the current mirror and current steering circuit seems to keep the bias rather stable, at least on the schematic). Thanks in advance for your comments & responses. Regards, Nikolay (LZ1NRD) - Mail.bg: Безплатен e-mail адрес. Най-добрите характеристики на българския пазар - 20 GB пощенска кутия, 1 GB прикрепен файл, безплатен POP3, мобилна версия, SMS известяване и други. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 12VDC OUT increased current mod available soon
Many of you have asked if there is a way to modify your K3 so that it can provide enough current to supply a P3 with the SVGA board. We are currently working on a mod kit that will do just that. We'll let you know as soon as we have something available. 73, Paul (n6hz) -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-12VDC-OUT-increased-current-mod-available-soon-tp7376146p7376146.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] KE7X book discount code
Just arrived in my mailbox: 20% discount today only (until 11:59 PM). Something about the Irish??? (Hi Doug!) :-) Use the code GIANTSHAMROCK. For more information, head to www.ke7x.com. 73, Fred, KE7X Fred Cady "The Elecraft K3: Design, Configuration, and Operation" www.ke7x.com > -Original Message- > From: elecraft-boun...@mailman.qth.net [mailto:elecraft- > boun...@mailman.qth.net] On Behalf Of Vic K2VCO > Sent: Wednesday, March 14, 2012 2:57 PM > To: Elecraft Reflector > Subject: [Elecraft] KE7X book discount code > > Is there an active discount code to buy the KE7X K3 book at Lulu? > > -- > Vic, K2VCO > Fresno CA > http://www.qsl.net/k2vco/ > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Make the Feet "Stickier"
There was discussion earlier about advantages of a KX3 v a K3. Even though the KX3 is much lighter, it shouldn't slide when pressing buttons, since it is mostly a vertical press. I will, however, need to wait until I acquire one to verify the advantage. 73, Rick K7MW > Perhaps a firmware enhancement to adjust the "weighting"... > > 73, > Drew > AF2Z > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Make the Feet "Stickier"
Perhaps a firmware enhancement to adjust the "weighting"... 73, Drew AF2Z On Wed, 14 Mar 2012 19:02:24 +, Ian GM3SEK wrote: >Dave New, N8SBE wrote: >> >>The K3 is just too darn light -- you need a MAN'S radio, one of those >>YaeComWood 50-pounders. >> > >Coming soon, specially crafted for all those stay-at-home K3s: >replacement top and bottom covers made from Depleted Uranium. > >Order code KDU3 > >[Insert user-configurable "radioactivity" joke here.] __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K2 - external map - I2C
Easiest way to do it would be using the KRC2 .. and someone was selling one on the list recently ;) de w1rt/john On Thu, Mar 15, 2012 at 9:33 AM, Jack Generaux <9ar...@gmail.com> wrote: > Folks, > > I have a K2 and have built a Communication Concepts 100 watt external amp. > Until now I have been using individual LPFs but have a Packer LPF-100 that I > was using with the MOBO project and I would like to use it for the K2/CC > combo. The easiest bandswitching is with a 6-pole switch. However, with > the MOBO, I was using an I2C controller (8574) to automate the switching. > Has anyone been able to automate the LPF switching with their K2? I also > posted this with the Yahoo group. Thanks > > 73, > Jack (W0FNQ) > > > > > Jack Generaux > 10248 Farley St > Overland Park, KS 66212 > 913-599-1995 816-506-5548(c) > 9ar...@gmail.com > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K2 - external map - I2C
Folks, I have a K2 and have built a Communication Concepts 100 watt external amp. Until now I have been using individual LPFs but have a Packer LPF-100 that I was using with the MOBO project and I would like to use it for the K2/CC combo. The easiest bandswitching is with a 6-pole switch. However, with the MOBO, I was using an I2C controller (8574) to automate the switching. Has anyone been able to automate the LPF switching with their K2? I also posted this with the Yahoo group. Thanks 73, Jack (W0FNQ) Jack Generaux 10248 Farley St Overland Park, KS 66212 913-599-1995 816-506-5548(c) 9ar...@gmail.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Make the Feet "Stickier"
I got some stuff at Lowe's made by DAP. It is called "Blue Stick." I took a small amount and rolled it into a ball then stuck it to each foot. I can now press the power button and jack in and out the headphones without chasing my radio around the shelf. Thanks for all the advice. 73, Joel - W4JBB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] W1 software testing help
If you have a W1, I hope you can take a few minutes to help me test software. The software runs, but the test is to see if it can be run with a single click from a web page. I'm fairly new to that aspect. If you'd like to test it, can you please follow the directions below and email me offlist whether it worked or not? And if not, what OS, 32/64 bit, serial port info (motherboard or usb converter), and errors you received? Thanks very much! 73, Mike ab3ap 1. Connect to serial port and turn on your W1. 2. Go to: http://udel.edu/~mm/ham/elecraft/w1/ 3. Below the top two pictures is a little Elecraft icon that says "Click me". Click it and hopefully an analog face to the W1 will start up. (When prompted, it's safe to accept the certificate.) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] P3 SVGA Frequency Display
Fred, Is it possible to set the P3SVGA font differently than the P3 font? This would certainly be a help. My P3SVGA is not yet with me. 73 Doug EI2CN -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Fred Jensen Sent: 15 March 2012 04:05 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 SVGA Frequency Display You can set the font size for the P3 screen in the menu. Not on the external monitor? Maybe it doesn't change the end-point and center frequency display, I'll have to check. 73, Fred K6DGW - Northern California Contest Club - CU in the 2012 Cal QSO Party 6-7 Oct 2012 - www.cqp.org On 3/14/2012 8:43 PM, Ed Schuller wrote: > Having a large screen is pretty nice. However, the frequency display at the top > is pretty small. It would be nice if the size of the numerals used could be > enlarged (and/or set by the user). It would also be nice if we could change the > colors on the SVGA display. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Make the Feet "Stickier"
125-lb. Heath DX-100 or if that is too light come get our old 32-inch Sony CRT TV (150-lb.) we upgraded to a Samsung 46-inch LED flat-screen 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 50-1.1kw?, 144-1.4kw, 432-QRT, 1296-?, 3400-? DUBUS Magazine USA Rep dubus...@gmail.com "Kits made by KL7UW" http://www.kl7uw.com/kits.htm == __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] P3 F/W 1.11 Ref Lvl Issue
FYI; Downloaded new F/W 1.12 for the P3. Set the Ref Lvl on three bands. All remained as set with subsequent band changes. Works good. Where else but Elecraft would you have a "minor" glitch fixed in say less than 2 days. Pretty outstanding I'd say. Just keep up the great work. Which is pretty amazing considering the fact that Elecraft people who do this are spread out across the country, and overseas, if you include the "testers". Impressive. Got to "touch" a KX3 at the Mike and Key Hamfair at Puyallup, WA last Saturday. Dick, AC7MA had it on display. A lot of good stuff in a small package. Two problems; keyer was for right handers, and it was a bit smudged all over (due to the many many fingerprints all over it from folks who were inconsiderate enough not to wash their hands before touching it. Shame.). I need a KPA500 first. OK, I know, enough. I'm back to bed. Thanks Again for the Excellent service, 73, Rick, W7LKG __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
