Re: [Elecraft] Unbelievable!
Like all things too good to be true, this posting about the KPA500 is a bit unbelievable. Like cars, YMMV. My experience with the KPA500 is much different. I suspect Jack only operates SSB. On CW expect the fan to come on after a few transmissions in under 30 seconds. Levels 1, 2 and sometimes 3 are often heard when doing some rag chewing at 500 W. The temperature stays below 70C as it should. RTTY is about the same with contest type operation. Expect the fan to operate as designed for these modes. It is not an absolutely quiet fan. I doubt Muffin type fans can be more quiet that what is used on the KPA500. One would have to go to a centrifugal fan like used on some of the really silent big amps to have it pin drop quiet. 73 de Brian/K3KO On 1/21/2012 23:19, Jack Berry wrote: I'm with you Fred. I wish Elecraft made cars. They would read our minds, last for 20 years and get 300 mpg! On Jan 21, 2012, at 4:03 PM, Fredric Serotafser...@msn.com wrote: I don't usually say much on these lists. But I have just finished building my KPA500, and I have to say that in my almost 50 years of hamming, this is the most incredible piece of equipment I have ever had. Now, I am not related to Elecraft in any way. They don't even know who I am. But I am so impressed with the quality of components and the engineering and thought that went in to this little package that I may sell my other amp (name starts with the first letter of the Greek alphabet) and buy another. My other amp is so noisy, the fan runs so loud and the QSK relays clickity-clack when sending CW. The KPA500 is as silent as can be, generates over 600 watts without any noise at all. The only time I can hear the fan is when I shut down the amplifier, it turns on to bleed the high voltage to make it safe if you want to poke inside. No other piece of equipment I have ever had does that. It follows the K3 without blinking. And the software gives you all the measurements, including temperature, that you would ever want to know. And the satisfaction of breaking a pile up with half the power I usually run, puts the fun back in operating. And all you guys can say is you don't like the color of the buttons. Unbelievable! Fred Serota, K3BHX __ 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 - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1416 / Virus Database: 2109/4757 - Release Date: 01/21/12 - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1416 / Virus Database: 2109/4759 - Release Date: 01/22/12 __ 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 freeze during CW Message Play
Sorry if this problem has been reported/discussed earlier. Problem: Playing CW messages from K3/Mx freezes the P3 display until a message has been sent. Any help? 73, Heinz HB9BCB -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Display-freeze-during-CW-Message-Play-tp7213496p7213496.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] Unbelievable!
K3BHX: And all you guys can say is you don't like the color of the buttons. Unbelievable! I can't speak for everyone Fred, but if this comment was a response to MY post, you certainly missed my point. I was not critical of the KPA500. I don't even have mine yet. But, the listed features alone blow me away and I look forward to getting mine. I hope you're not including me in your all you guys can say post because that just isn't true in my case. I simply posted my personal reason for wanting the buttons on the KPA500 to match the other gear within my K-Line. I love all things Elecraft and shout praises for the E-Team from the highest rooftop. I'm sure I'll feel the same when I get my KPA500. That said, the button color is a personal preference involving *esthetics*, not performance. It's not a big deal. And, it's an issue that someone else already found a quick and inexpensive fix for, should one want to change them. OK, I'll button this up now. ;o) Terry, W0FM -Original Message- From: Fredric Serota [mailto:fser...@msn.com] Sent: Saturday, January 21, 2012 4:03 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Unbelievable! I don't usually say much on these lists. But I have just finished building my KPA500, and I have to say that in my almost 50 years of hamming, this is the most incredible piece of equipment I have ever had. Now, I am not related to Elecraft in any way. They don't even know who I am. But I am so impressed with the quality of components and the engineering and thought that went in to this little package that I may sell my other amp (name starts with the first letter of the Greek alphabet) and buy another. My other amp is so noisy, the fan runs so loud and the QSK relays clickity-clack when sending CW. The KPA500 is as silent as can be, generates over 600 watts without any noise at all. The only time I can hear the fan is when I shut down the amplifier, it turns on to bleed the high voltage to make it safe if you want to poke inside. No other piece of equipment I have ever had does that. It follows the K3 without blinking. And the software gives you all the measurements, incl uding temperature, that you would ever want to know. And the satisfaction of breaking a pile up with half the power I usually run, puts the fun back in operating. And all you guys can say is you don't like the color of the buttons. Unbelievable! Fred Serota, K3BHX __ 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 freeze during CW Message Play
This sounds normal. P3 display always freezes during transmit. (Unless you disconnect the RS232 cable to the K3). 73, Bruce, N1RX Problem: Playing CW messages from K3/Mx freezes the P3 display until a message has been sent. __ 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] FS: Mint K2/10 CW
K2/10 with Noise Blanker and Audio Filter/Real Time Clock options installed. Mint - Zero hours after initial testing, alignment and checkout. Please email if interested. Pete WK8S __ 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] Portable Power Supply
Greetings All, Here I am portable at my mother-in-law's place in NY (home QTH is CO). I was fortunate enough to bring my KX1 with me to make *good* use of my time while visiting. With the internal batteries (1-2 watts out) and a 36 foot wire tossed out of the window of her 4th floor apartment, I made a dozen QSOs on 20M yesterday including OK, I, PJ2, PJ4, HG, and a bunch of stateside.What a blast! For the next visit, I'll have my KX3, and things can only get better. Condx are poor today, but I bet I could make a PSK31 QSO if I had the means. Which brings me to my quest for a portable power supply. Having used my KX1 only hiking and never around AC, I've never thought about a small supply. But in this situation, it's very appropriate. I noticed there are a number of supplies on the market when I searched for 12V 2A regulated supplies. There are some that are wall wart style, which would be perfect for travelling. So, my question is... - does anyone have any experience with these and have a recommendation? - are these relatively cheap regulated supplies really regulated enough? - do we think 2 amps is sufficient for the KX3 in the 10 watt mode? Tnx for the advice. 73, Shel KF0UR -- View this message in context: http://elecraft.365791.n2.nabble.com/Portable-Power-Supply-tp7213597p7213597.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] Portable Power Supply
Greetings All, Here I am portable at my mother-in-law's place in NY (home QTH is CO). I was fortunate enough to bring my KX1 with me to make *good* use of my time while visiting. With the internal batteries (1-2 watts out) and a 36 foot wire tossed out of the window of her 4th floor apartment, I made a dozen QSOs on 20M yesterday including OK, I, PJ2, PJ4, HG, and a bunch of stateside.What a blast! For the next visit, I'll have my KX3, and things can only get better. Condx are poor today, but I bet I could make a PSK31 QSO if I had the means. Which brings me to my quest for a portable power supply. Having used my KX1 only hiking and never around AC, I've never thought about a small supply. But in this situation, it's very appropriate. I noticed there are a number of supplies on the market when I searched for 12V 2A regulated supplies. There are some that are wall wart style, which would be perfect for travelling. So, my question is... - does anyone have any experience with these and have a recommendation? - are these relatively cheap regulated supplies really regulated enough? - do we think 2 amps is sufficient for the KX3 in the 10 watt mode? Tnx for the advice. 73, Shel KF0UR -- View this message in context: http://elecraft.365791.n2.nabble.com/Portable-Power-Supply-tp7213599p7213599.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] Portable Power Supply
Sorry for the double post. I received a nabble error message when I originally posted, thinking it didn't make it, so I posted again. I tried to delete one of them, but they persist! -- View this message in context: http://elecraft.365791.n2.nabble.com/Portable-Power-Supply-tp7213597p7213618.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] Portable Power Supply
Samlex SEC 1235M. Lightweight, 8x7x2.5 dimensions, 30A output. Web: http://www.samlex.com/SAMLEX/site/products/productdetails.cfm?iProductId=136 You may not need the 30A output capacity, but it makes the PSU useful for a K3 or any 100-watt class xcvr as well. The 1235 is ultra-clean, and there are very few RFI issues. Here is Acopian's offering at 13V: http://www.acopian.com/store/productdetail.aspx?q=dNominal+Output+Voltage:+13;+Max+Output+Current+Amps+%2850+C%29:+2.3;+++Ripple+mV+RMS:+15;+Ripple+mV+P-P:+100;+Case+Size:+EBW-13,i763 Lists at $192.00, which seems pricey compared to the Samlex @ 30A for a wee bit more. 73, matt W6NIA On Sun, 22 Jan 2012 07:31:57 -0800 (PST), you wrote: Greetings All, Here I am portable at my mother-in-law's place in NY (home QTH is CO). I was fortunate enough to bring my KX1 with me to make *good* use of my time while visiting. With the internal batteries (1-2 watts out) and a 36 foot wire tossed out of the window of her 4th floor apartment, I made a dozen QSOs on 20M yesterday including OK, I, PJ2, PJ4, HG, and a bunch of stateside.What a blast! For the next visit, I'll have my KX3, and things can only get better. Condx are poor today, but I bet I could make a PSK31 QSO if I had the means. Which brings me to my quest for a portable power supply. Having used my KX1 only hiking and never around AC, I've never thought about a small supply. But in this situation, it's very appropriate. I noticed there are a number of supplies on the market when I searched for 12V 2A regulated supplies. There are some that are wall wart style, which would be perfect for travelling. So, my question is... - does anyone have any experience with these and have a recommendation? - are these relatively cheap regulated supplies really regulated enough? - do we think 2 amps is sufficient for the KX3 in the 10 watt mode? Tnx for the advice. 73, Shel KF0UR __ 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 drive needed went up
This morning my K4KIO antenna iced up without my noticing it. When I started transmitting I got a high SWR fault on the KPA500. I checked the SWR with my RigExpert analyzer and indeed there was high SWR on all frequencies. I hooked the KPA500 to my dummy load and where I used to get a good 500 W with 20-25 W drive I now only get about 400 W with 50 W drive. Any ideas about what is going on? Did I lose a transistor in the final? David K0LUM __ 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] Portable Power Supply
I have a small Power Werx 35 amp supply and I use it all the time for the K3 and FT950 (backup). It is very small and excellent for transporting. Keith Sent from my iPhone please excuse typos On Jan 22, 2012, at 7:32 AM, Shel Radin KF0UR kf...@radins.us wrote: Greetings All, Here I am portable at my mother-in-law's place in NY (home QTH is CO). I was fortunate enough to bring my KX1 with me to make *good* use of my time while visiting. With the internal batteries (1-2 watts out) and a 36 foot wire tossed out of the window of her 4th floor apartment, I made a dozen QSOs on 20M yesterday including OK, I, PJ2, PJ4, HG, and a bunch of stateside.What a blast! For the next visit, I'll have my KX3, and things can only get better. Condx are poor today, but I bet I could make a PSK31 QSO if I had the means. Which brings me to my quest for a portable power supply. Having used my KX1 only hiking and never around AC, I've never thought about a small supply. But in this situation, it's very appropriate. I noticed there are a number of supplies on the market when I searched for 12V 2A regulated supplies. There are some that are wall wart style, which would be perfect for travelling. So, my question is... - does anyone have any experience with these and have a recommendation? - are these relatively cheap regulated supplies really regulated enough? - do we think 2 amps is sufficient for the KX3 in the 10 watt mode? Tnx for the advice. 73, Shel KF0UR -- View this message in context: http://elecraft.365791.n2.nabble.com/Portable-Power-Supply-tp7213597p7213597.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] Portable Power Supply
I've seen posts from people who used 12V laptop computer power supplies with some success. See http://www.eham.net/ehamforum/smf/index.php/topic,78185.0.html The Samsung AD-4212L has a ferrite on the 12V cord, so maybe it's quiet enough. Prices vary widely depending on source. I've not used one. I have a Gamma Research HPS-1a, http://gammaresearch.net/hps-1a.html that is just a bit larger than the KX1. It's nice having one compact supply that can support the KX1, K2, and (with some limitations), the K3. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Shel Radin KF0UR Sent: Sunday, January 22, 2012 7:34 AM To: elecraft@mailman.qth.net Subject: [Elecraft] Portable Power Supply Greetings All, Here I am portable at my mother-in-law's place in NY (home QTH is CO). I was fortunate enough to bring my KX1 with me to make *good* use of my time while visiting. With the internal batteries (1-2 watts out) and a 36 foot wire tossed out of the window of her 4th floor apartment, I made a dozen QSOs on 20M yesterday including OK, I, PJ2, PJ4, HG, and a bunch of stateside.What a blast! For the next visit, I'll have my KX3, and things can only get better. Condx are poor today, but I bet I could make a PSK31 QSO if I had the means. Which brings me to my quest for a portable power supply. Having used my KX1 only hiking and never around AC, I've never thought about a small supply. But in this situation, it's very appropriate. I noticed there are a number of supplies on the market when I searched for 12V 2A regulated supplies. There are some that are wall wart style, which would be perfect for travelling. So, my question is... - does anyone have any experience with these and have a recommendation? - are these relatively cheap regulated supplies really regulated enough? - do we think 2 amps is sufficient for the KX3 in the 10 watt mode? Tnx for the advice. 73, Shel KF0UR -- View this message in context: http://elecraft.365791.n2.nabble.com/Portable-Power-Supply-tp7213599p7213599 .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] New K3 utility software required message on my K3?????
On Sun, Jan 22, 2012 at 12:21 AM, Dick Dievendorff die...@comcast.net wrote: ...it sounds like the communications path from PC to K3 has become marginal, this is why we're suggesting different computer, different USB hub, different cable...The DSP load is a bit more demanding of clean communciations. I don't want to be a naysayer, but I think this is a flaw in the update system. Every day millions of users update phone apps, even their phone's OS, and their PC or Mac apps and OS, even their Mac firmware, over a lousy and intermittent connection. If the connection goes down in the middle, no problem - the error correction takes care of it. You can turn your machine off right in the middle and it will recover without error. It couldn't be otherwise; there's no way to explain to consumer users that the connection has to be solid. I realize it's more code on both ends, but I think this is something Elecraft should look at. 73, 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] Explain terms for Elecraft DL1 Power Calculation
The DL1 50 ohm dummy load is basically composed of two 25 ohm resistors in series. For power calculations, RF is taken off between the two resistors, rectified via a diode with a 0.3v drop. The DC is then smoothed with a .01 uf capacitor. before reaching the test point. The power calculation is then given as P(watts)=((Voltsx1.414) + 0.15)^2 / 50 I'm wanting to understand where the terms in this equation come from? I presume 0.15 is somehow related to the 0.3 Volt drop across the diode, but how is 0.15 arrived at and why not 0.3? And where does 1.414, obviously the sqrt of 2 come from - the divided voltage from the dummy load? Thanks for any enlightenment! Chip AE5KA __ 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-K For Sale; Like New
Hi Everyone, I am offering my P3-K #268 for sale. This is an opportunity to obtain a pristine P3 at a reduction of over 20% of its current new cost. This unit was purchased and assembled by me in September 2010but it has been used sparingly. While this is a fantastic accessory, it is not complementing my style of operating and thus is not being fully utilized. This P3 is perfect in every way electrically, mechanically and cosmetically. The front and rear panels, cabinet panels and the clear screen are as new, no scratches, dings, smudges etc.. It has been covered with not in use. I am a non-smoker. Jpegs can be taken and made available if required. $549 plus shipping. Payment via USPS Postal Money Order only. No PayPal. Please contact me off list if interested at _N1LQ@arrl.net_ 73 de N1LQ-Dave __ 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] Explain terms for Elecraft DL1 Power Calculation
Volts X 1.414 gives you peak volts. I'm not quite sure why only half the diode voltage drop (.15) is added. I've only ever seen it all added. All that squared and divided by the impedance (50Ohms) gives you power. On 1/22/2012 12:05 PM, Chip Stratton wrote: The DL1 50 ohm dummy load is basically composed of two 25 ohm resistors in series. For power calculations, RF is taken off between the two resistors, rectified via a diode with a 0.3v drop. The DC is then smoothed with a .01 uf capacitor. before reaching the test point. The power calculation is then given as P(watts)=((Voltsx1.414) + 0.15)^2 / 50 I'm wanting to understand where the terms in this equation come from? I presume 0.15 is somehow related to the 0.3 Volt drop across the diode, but how is 0.15 arrived at and why not 0.3? And where does 1.414, obviously the sqrt of 2 come from - the divided voltage from the dummy load? Thanks for any enlightenment! Chip AE5KA __ 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 -- R. Kevin Stover AC0H ARRL FISTS #11993 SKCC #215 NAQCC #3441 __ 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] Explain terms for Elecraft DL1 Power Calculation
OK, I get the 1.414 term now. The RF is sampled at the voltage divider, and the diode/capacitor circuit rests at the peak voltage it sees - which is half what the transmitter is delivering. To get peak voltage of the RF waveform at the input to the DL1, we multiply by two. To get the RMS we then divide by 1.414. But 2/1.414 is 1.414, so we simply multiply the voltage by 1.414. Now for the 0.15 term? Chip __ 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] [Elecraft_K3] KAT500 update
While cleaning up old emails, I came across this. Have the illustrations been posted? Looking forward for more information. 73 de Sebastian, W4AS On Dec 7, 2011, at 8:45 PM, Wayne Burdick wrote: I have a full-color illustration showing how the reworked front/rear panels (supporting the third antenna jack) will look when they come in in a few weeks. I'll see about posting that. 73, Wayne N6KR On Dec 7, 2011, at 5:39 PM, mstang...@comcast.net wrote: Wayne, When will the KAT500 be available for purchase. Do you have any documentation? 73, Mike N2MS - Original Message - From: Wayne Burdick n...@elecraft.com To: Elecraft Reflector elecraft@mailman.qth.net Cc: Elecraft K3 elecraft...@yahoogroups.com Sent: Thu, 08 Dec 2011 01:22:16 - (UTC) Subject: [Elecraft_K3] KAT500 update We originally had two antenna jacks on the KAT500, with one of them switchable between balanced and unbalanced. Recently we decided that a third antenna jack would provide greater utility overall. (In my case, I'll be keeping a dummy load on the third jack.) All three jacks will be unbalanced (SO239). We're hoping to add a high-power, high-performance balun to our product line sometime next year that will serve the needs of those using balanced lines. 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] [W2] Waterproofing the sensor
I'd be interested to hear from anyone who has waterproofed a sensor, I'm considering the W2 and want to put the sensor on the masthead. 73 de David, M0XDF (K3 #174, P3 #108) -- Experience is that marvellous thing that enables you to recognize a mistake when you make it again. -Franklin P. Jones __ 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] Explain terms for Elecraft DL1 Power Calculation
I think it can be made clearer by re-casting the equation from: P(watts)=((Voltsx1.414) + 0.15)^2 / 50 to P(watts) = [2 x 0.707 x (Volts + 0.106)]^2 / 50 A diode rectifier is a peak detector. So you multiply by 0.707 to convert from peak to RMS and then multiply by 2 to correct for the 2:1 voltage divider. I'm not sure why only 0.1V is added to compensate for the diode voltage drop. It's true that the voltage drop is less with a high load impedance, but 0.1V seems too small. Alan N1AL On Sun, 2012-01-22 at 18:05 +, Chip Stratton wrote: The DL1 50 ohm dummy load is basically composed of two 25 ohm resistors in series. For power calculations, RF is taken off between the two resistors, rectified via a diode with a 0.3v drop. The DC is then smoothed with a .01 uf capacitor. before reaching the test point. The power calculation is then given as P(watts)=((Voltsx1.414) + 0.15)^2 / 50 I'm wanting to understand where the terms in this equation come from? I presume 0.15 is somehow related to the 0.3 Volt drop across the diode, but how is 0.15 arrived at and why not 0.3? And where does 1.414, obviously the sqrt of 2 come from - the divided voltage from the dummy load? Thanks for any enlightenment! Chip AE5KA __ 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] Portable Power Supply
As the KX1 requires less than 1-amp, you might want to take a look at the Array Solutions PS-12R1A power supply. This is a linear regulated wall-wart type power supply, is is RF quiet, and it is only $19. Phil - AD5X __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] [Elecraft_K3] KAT500 update
Haven't seen them, but they have updated the proposed ship date to March-April 2012 on the KPA500 web page. While cleaning up old emails, I came across this. Have the illustrations been posted? Looking forward for more information. 73 de Sebastian, W4AS On Dec 7, 2011, at 8:45 PM, Wayne Burdick wrote: I have a full-color illustration showing how the reworked front/rear panels (supporting the third antenna jack) will look when they come in in a few weeks. I'll see about posting that. 73, Wayne N6KR On Dec 7, 2011, at 5:39 PM, mstang...@comcast.net wrote: Wayne, When will the KAT500 be available for purchase. Do you have any documentation? 73, Mike N2MS - Original Message - From: Wayne Burdick n...@elecraft.com To: Elecraft Reflector elecraft@mailman.qth.net Cc: Elecraft K3 elecraft...@yahoogroups.com Sent: Thu, 08 Dec 2011 01:22:16 - (UTC) Subject: [Elecraft_K3] KAT500 update We originally had two antenna jacks on the KAT500, with one of them switchable between balanced and unbalanced. Recently we decided that a third antenna jack would provide greater utility overall. (In my case, I'll be keeping a dummy load on the third jack.) All three jacks will be unbalanced (SO239). We're hoping to add a high-power, high-performance balun to our product line sometime next year that will serve the needs of those using balanced lines. 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 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] New K3 utility software required message on my K3?????
Tony == Tony Estep estept...@gmail.com writes: Tony firmware, over a lousy and intermittent connection. If the connection Tony goes down in the middle, no problem - the error correction takes care Tony of it. You can turn your machine off right in the middle and it will Tony recover without error. It couldn't be otherwise; there's no way to You have to admit though that a smartphone has a bit more memory and a generally more powerful cpu than your radio... -- Pierfrancesco Caci, ik5pvx __ 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] Explain terms for Elecraft DL1 Power Calculation
Alan: A couple years ago, I measured the DC output for a 1N5711 Schottky diode at 2, 10 and 21 MHz with RF input from essentially 0 to 1.8V peak (half-wave rectification). The diode operated into a high Z load (an HP digital multi-meter) and the RF was from an HP signal generator. A plot of this is at http://www.cliftonlaboratories.com/diodes_for_rf_probes.htm After reading your question about the diode drop today, I ran a linear regression fit of the average of the 2, 10 and 21 MHz data, over the range starting a bit above the knee, at 0.3V peak up to the 1.8V peak. Below this point, the diode is in square law range and a simple fixed voltage drop assumption fails. Over this linear range, the Y intercept is -0.11V, with an R^2 0.999 and standard error of 0.00275V. Into a high Z load, therefore, 0.11V is a suitable diode offset. The actual diode offset, leaving aside unit-to-unit variations, will be a function of temperature and load impedance amongst other things. Given the other inaccuracies in the process, 0.1V is a good estimate. Jack K8ZOA On 1/22/2012 1:57 PM, Alan Bloom wrote: I think it can be made clearer by re-casting the equation from: P(watts)=((Voltsx1.414) + 0.15)^2 / 50 to P(watts) = [2 x 0.707 x (Volts + 0.106)]^2 / 50 A diode rectifier is a peak detector. So you multiply by 0.707 to convert from peak to RMS and then multiply by 2 to correct for the 2:1 voltage divider. I'm not sure why only 0.1V is added to compensate for the diode voltage drop. It's true that the voltage drop is less with a high load impedance, but 0.1V seems too small. Alan N1AL On Sun, 2012-01-22 at 18:05 +, Chip Stratton wrote: The DL1 50 ohm dummy load is basically composed of two 25 ohm resistors in series. For power calculations, RF is taken off between the two resistors, rectified via a diode with a 0.3v drop. The DC is then smoothed with a .01 uf capacitor. before reaching the test point. The power calculation is then given as P(watts)=((Voltsx1.414) + 0.15)^2 / 50 I'm wanting to understand where the terms in this equation come from? I presume 0.15 is somehow related to the 0.3 Volt drop across the diode, but how is 0.15 arrived at and why not 0.3? And where does 1.414, obviously the sqrt of 2 come from - the divided voltage from the dummy load? Thanks for any enlightenment! Chip AE5KA __ 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] New K3 utility software required message on my K3?????
On Sun, Jan 22, 2012 at 12:20 PM, Dick Dievendorff die...@comcast.net wrote: It's a long way from the Microchip PIC18 we're using in the K3, KX3, and KPA500 (64K instruction words, 4K RAM, 1K EEPROM) to the devices used in an iPhone... === Yeah, very true, Dick. I know enough PIC programming to realize that you have done a great job to squeeze so much functionality out of that instruction repertoire. But the price of processing keeps coming way down (Raspberry Pi 25 bucks, just for one of many examples), so I guess someday there will be a new generation. Tony KT0NY __ 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] New K3 utility software required message on my K3?????
It is indeed amazing. We found a PIC32 knock off for an Arduino Uno for $26. Unfortunately or fortunately our engineering staff is quite small and enough of an existing code base that ports are non trivial. Dick On Jan 22, 2012, at 11:21, Tony Estep estept...@gmail.com wrote: On Sun, Jan 22, 2012 at 12:20 PM, Dick Dievendorff die...@comcast.net wrote: It's a long way from the Microchip PIC18 we're using in the K3, KX3, and KPA500 (64K instruction words, 4K RAM, 1K EEPROM) to the devices used in an iPhone... === Yeah, very true, Dick. I know enough PIC programming to realize that you have done a great job to squeeze so much functionality out of that instruction repertoire. But the price of processing keeps coming way down (Raspberry Pi 25 bucks, just for one of many examples), so I guess someday there will be a new generation. Tony KT0NY __ 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] Portable Power Supply
I used a Toshiba laptop computer power supply to power my K2 (receive only) for almost 3 years nonstop 24/7 during a propagation study, although I did add a voltage regulator placed betweeen the supply's output and the K2. This particular supply is rated to deliver up to 6 amps at 15V, but its output voltage is not well regulated and will increase as current draw decreases. The supply generates noise at HF which could be a problem when operating portable. Footnote. Should anyone contemplate using a Laptop's supply in cotinuous unattended duty, I suggest that the supply should be enclosed in a fireproof box as a safety measure. 73, Geoff LX2AO On January 22, 2012 at 18:38 +0100, Dick Dievendorff wrote: I've seen posts from people who used 12V laptop computer power supplies with some success. See snip __ 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 freeze during CW keying
I wonder why ELECRAFT has choosen a different design approach to mute the K3 IF signal to the P3: K3 internal keying (by paddel jack or by M1-M8): IF signal is fully muted (P3 display freezed) -- allows no monitoring of spectrum and transmitted signal while keying -- P3 diplay does not support QSK K3 external keying (by key jack): IF signal is muted only during dotsdashes -- allows monitoring of spectrum and transmitted signal while keying -- P3 diplay does support QSK (which I do appreciate). 73, Heinz HB9BCB -- View this message in context: http://elecraft.365791.n2.nabble.com/P3-Display-freeze-during-CW-keying-tp7214069p7214069.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] Explain terms for Elecraft DL1 Power Calculation
Alan, Actually the correct formula is even easier. If you note, you are squaring the 2 x .707 term, and the overall result of that is 2. So the formula becomes: P (watts) = 2(Volts + diode drop)^2/50 or even easier P (watts) = (Volts + diode drop)^2/25 Substitute whatever you think is correct for the diode drop - see Jack Smith's recent post for details. The formula above was supposed to make it into the DL2 manual at one time, but I see it has not been inserted. 73, Don W3FPR On 1/22/2012 1:57 PM, Alan Bloom wrote: I think it can be made clearer by re-casting the equation from: P(watts)=((Voltsx1.414) + 0.15)^2 / 50 to P(watts) = [2 x 0.707 x (Volts + 0.106)]^2 / 50 A diode rectifier is a peak detector. So you multiply by 0.707 to convert from peak to RMS and then multiply by 2 to correct for the 2:1 voltage divider. I'm not sure why only 0.1V is added to compensate for the diode voltage drop. It's true that the voltage drop is less with a high load impedance, but 0.1V seems too small. 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
Re: [Elecraft] New K3 utility software required message on my K3?????
Thanks for the suggestion; while I'm not too confident that I'll be successful doing that (I don't have much luck when it comes to creating folders and files and extracting this and that and such) I may give it a try or two and see what happens. Late last night (I couldn't stop until after midnight I was so determined) I actually managed a successful load of all the firmware---even the DVR and both dsps loaded! The bad news is after some time spent in the CONFIG menu resetting the various parameters as I had them before---I started getting the ERR DSE error message again on the K3. Now it always says E 010C 0C ERR DSE when I power it up. I'm going to disconnect everything except the DC power cable and the KUSB cable and try it all over again just in case it'll save me shipping it off to Aptos this week. What worries me is that it's not so much the USB connection but some kind of failure or glitch in the DSP board (just my hunch; nothing more). Will try to report back before I head off to work in 5 or 6 hours from now... 73, Jeff -- View this message in context: http://elecraft.365791.n2.nabble.com/New-K3-utility-software-required-message-on-my-K3-tp7212149p7214135.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] Explain terms for Elecraft DL1 Power Calculation
OK, thanks everyone for the education. This came up because I wanted to build an RF detector to use with a multimeter as an RF field strength meter to compare different ground/counterpoise schemes for HF on a boat. I ended up copying the circuit for the MFJ-802 field strength meter, which puts a load of 1 meg across a 1n270 diode bridge. Using a .3 volt drop assumption for those diodes gives a very linear correlation of voltage versus transmitted power in the near field. So the .15 volt assumption in the dummy load calc was a puzzle to me. AE5KA Chip __ 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 Loss of main audio when sub turned on
My main RX looses audio when I turn on the sub rx. Before ripping things apart I wonder if I am neglecting some simple setting. Howard..K2HK __ 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] Explain terms for Elecraft DL1 Power Calculation
It does use a 1N511 Schottky diode which as a very low voltage drop - something like 0.15 V at a mA or two of forward current. Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Alan Bloom Sent: Sunday, January 22, 2012 10:57 AM To: Chip Stratton Cc: Elecraft Reflector Subject: Re: [Elecraft] Explain terms for Elecraft DL1 Power Calculation I think it can be made clearer by re-casting the equation from: P(watts)=((Voltsx1.414) + 0.15)^2 / 50 to P(watts) = [2 x 0.707 x (Volts + 0.106)]^2 / 50 A diode rectifier is a peak detector. So you multiply by 0.707 to convert from peak to RMS and then multiply by 2 to correct for the 2:1 voltage divider. I'm not sure why only 0.1V is added to compensate for the diode voltage drop. It's true that the voltage drop is less with a high load impedance, but 0.1V seems too small. 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
Re: [Elecraft] Explain terms for Elecraft DL1 Power Calculation
Jack, Interesting. I didn't realize it was a Schottky diode. But it makes sense. Using the rule that the current increases by e (2.718) for every 26 mV change in forward voltage: If you assume that the forward voltage drop is 0.3V at (let's say) 1 mA forward current, then at 1 uA (1V into a 1M load), the voltage should drop by a factor of 0.026V x ln(1000) = 0.18V. 0.3 - 0.18 = 0.12V, pretty close. With a silicon diode the answer would be something like 0.6 - 0.18V = 0.42V. That's why Schottky-diode detectors have better linearity. Alan N1AL On Sun, 2012-01-22 at 14:21 -0500, Jack Smith wrote: Alan: A couple years ago, I measured the DC output for a 1N5711 Schottky diode at 2, 10 and 21 MHz with RF input from essentially 0 to 1.8V peak (half-wave rectification). The diode operated into a high Z load (an HP digital multi-meter) and the RF was from an HP signal generator. A plot of this is at http://www.cliftonlaboratories.com/diodes_for_rf_probes.htm After reading your question about the diode drop today, I ran a linear regression fit of the average of the 2, 10 and 21 MHz data, over the range starting a bit above the knee, at 0.3V peak up to the 1.8V peak. Below this point, the diode is in square law range and a simple fixed voltage drop assumption fails. Over this linear range, the Y intercept is -0.11V, with an R^2 0.999 and standard error of 0.00275V. Into a high Z load, therefore, 0.11V is a suitable diode offset. The actual diode offset, leaving aside unit-to-unit variations, will be a function of temperature and load impedance amongst other things. Given the other inaccuracies in the process, 0.1V is a good estimate. Jack K8ZOA On 1/22/2012 1:57 PM, Alan Bloom wrote: I think it can be made clearer by re-casting the equation from: P(watts)=((Voltsx1.414) + 0.15)^2 / 50 to P(watts) = [2 x 0.707 x (Volts + 0.106)]^2 / 50 A diode rectifier is a peak detector. So you multiply by 0.707 to convert from peak to RMS and then multiply by 2 to correct for the 2:1 voltage divider. I'm not sure why only 0.1V is added to compensate for the diode voltage drop. It's true that the voltage drop is less with a high load impedance, but 0.1V seems too small. Alan N1AL On Sun, 2012-01-22 at 18:05 +, Chip Stratton wrote: The DL1 50 ohm dummy load is basically composed of two 25 ohm resistors in series. For power calculations, RF is taken off between the two resistors, rectified via a diode with a 0.3v drop. The DC is then smoothed with a .01 uf capacitor. before reaching the test point. The power calculation is then given as P(watts)=((Voltsx1.414) + 0.15)^2 / 50 I'm wanting to understand where the terms in this equation come from? I presume 0.15 is somehow related to the 0.3 Volt drop across the diode, but how is 0.15 arrived at and why not 0.3? And where does 1.414, obviously the sqrt of 2 come from - the divided voltage from the dummy load? Thanks for any enlightenment! Chip AE5KA __ 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
[Elecraft] RFI
Dave: I for one have worked for over eight years in the research and engineering of motor controls used in home appliances. These devices have a power output approaching 1KVA of PWM power to a 3-phase motor with possible RFI radiation as high as 10 MHZ . I also believe that we should hoard incandescent light bulbs. Norman KB8EEF / AAV5VW __ 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 S/N 1864 up and running!
Got my P3 built and up this afternoon - just in time to use it on 6 and find some Q's in the VHF contest. This thing is slick. 73, Steve Wedge, W1ES/4 Live free or die: Death is not the worst of evils. John Stark. All my computers have my signature with various pearls of wisdom appended thereto. __ 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 Loss of main audio when sub turned on
Do you have the audio balance control set 100% to sub instead of, say, 50/50 sum main? Or the config setting on b--MIX--b instead of A--MIX-b? BTDT! 73 Gary ZL2iFB -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft- boun...@mailman.qth.net] On Behalf Of Howard K2HK Sent: Monday, 23 January 2012 10:09 a.m. To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Loss of main audio when sub turned on My main RX looses audio when I turn on the sub rx. Before ripping things apart I wonder if I am neglecting some simple setting. Howard..K2HK __ 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] Tentative GREAT NEWS
I disconnected all the cables to my K3, set it up on a temporary workbench, connected the DC and KUSB and commenced to run the K3 Utility once again. The great news is that everything loaded up correctly and this time I checked the filter calibration/settings in the utility before powering down. One of the sub-receiver filter settings was incorrect and one of the filter offsets on the main receiver was slightly off as well---so I corrected them and applied the updated settings. Powered down and then powered back up---everything looks good! Disconnected the KUSB after the power down and powered back up a couple of times and no error messages at all. Don't know if that was what the problem was but at any rate I MAY have fixed it this time. I say may because I will need to hook everything back up (KPA500, P3, speakers, headset, antennas, etc.) and give it a good test run before I'm sure it's OK. Either way it goes later on I'll reconfirm the fix or else report otherwise; hopefully all will be well for now. Thanks again for all the help and suggestions; maybe that one of disconnecting all other cables might have been the one thing that skewed everything off the right path to begin with. Very seventy-three to all, Jeff -- View this message in context: http://elecraft.365791.n2.nabble.com/New-K3-utility-software-required-message-on-my-K3-tp7212149p7214315.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] ECN guest Net Control
On 1/21/2012 7:58 PM, kevinr wrote: Good evening once again, I received an email from Fred, K6DGW. He will be the NCS for the CW nets tomorrow. Thank you Fred. Have fun and keep them under control :) OK, I don't know all the names, so we'll stick to calls. Adhering to the speed limit imposed on us when I was a coastal marine operator while a senior in high school [that would be in the Jurassic period], I'll poke along at 18 WPM. We'll see if I can find someone in the midwest to call the net too. The CME from a couple days ago is driving up A and K, could be interesting. 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] K3 Connection to KAM+
For reasons I'd rather not get into, I found myself needing to get on PACTOR I. I ordered and received a used KAM+ and have gotten it successfully hooked up and receiving on RTTY and HF Packet. Problem is, when I try and connect to a PACTOR BBS or even test on RTTY, I don't get any output power and hear no tones as I do in the soundcard modes. It has been a long time since I used a modem for PACTOR, and I know at that time, you would not hear the tones and maybe that's still the case with the K3. When trying to transmit, the radio goes into transmit, but I have no output. I did try changing the data mode to FSK, but the tone I got out did not sound like what I remember PACTOR sounding like. It sounded nothing like RTTY when in RTTY mode either. Here's what I have connected: KAM+K3 Pin 1 = TxD Line Out Pin 2 = GND PTT GND Pin 3 = PTT PTT Pin 6 = RxA Line In Has anyone gotten an older KAM+ working properly with their K3? Should I not be going through the connections on the rear of the K3? In the past, I would go through the mic connector for PACTOR, RTTY, etc. It could be that I don't have the correct connections for the KAM+. It was a cable I used previously with either an FT-847 or FT-857. 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
Re: [Elecraft] Tentative GREAT NEWS
Good news Jeff. I'm late chiming in here but am wondering if you should check and maybe reseat the connections to the sub receiver. I think I got that DSE error once when I had disabled the sub-RX. Cheers and 73, Fred KE7X 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 NH7RO Sent: Sunday, January 22, 2012 3:08 PM To: elecraft@mailman.qth.net Subject: [Elecraft] Tentative GREAT NEWS I disconnected all the cables to my K3, set it up on a temporary workbench, connected the DC and KUSB and commenced to run the K3 Utility once again. The great news is that everything loaded up correctly and this time I checked the filter calibration/settings in the utility before powering down. One of the sub-receiver filter settings was incorrect and one of the filter offsets on the main receiver was slightly off as well---so I corrected them and applied the updated settings. Powered down and then powered back up---everything looks good! Disconnected the KUSB after the power down and powered back up a couple of times and no error messages at all. Don't know if that was what the problem was but at any rate I MAY have fixed it this time. I say may because I will need to hook everything back up (KPA500, P3, speakers, headset, antennas, etc.) and give it a good test run before I'm sure it's OK. Either way it goes later on I'll reconfirm the fix or else report otherwise; hopefully all will be well for now. Thanks again for all the help and suggestions; maybe that one of disconnecting all other cables might have been the one thing that skewed everything off the right path to begin with. Very seventy-three to all, Jeff -- View this message in context: http://elecraft.365791.n2.nabble.com/New-K3-utility-software-required-me ssage-on-my-K3-tp7212149p7214315.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] K3 Loss of main audio when sub turned on
Thank you Gary. You hit it. Mix was bb. Glad you were listening :-) 73,Howard..K2HK From: g...@isect.com Subject: Re: [Elecraft] K3 Loss of main audio when sub turned on Do you have the audio balance control set 100% to sub instead of, say, 50/50 sum main? Or the config setting on b--MIX--b instead of A--MIX-b? BTDT! 73 Gary ZL2iFB Subject: [Elecraft] K3 Loss of main audio when sub turned on My main RX looses audio when I turn on the sub rx. Before ripping things apart I wonder if I am neglecting some simple setting. Howard..K2HK __ : 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 Connection to KAM+
Have you followed the instructions for AMTOR/PACTOR in the K3 Owner's Manual? Assuming pins 1 and 6 are audio signals and not logic signals, it looks as if you have them connected backwards. Tx audio from the KAM+ should be fed to the K3's Line In, and Rx audio should be fed from the K3's Line Out to the KAM+ audio input. To use audio signals, the K3 should be in either DATA A-REV mode or in AFSK A mode, assuming the KAM+ is set up assuming the radio is in LSB; if the KAM+ expects the radio to be in USB, use DATA A or AFSK A-REV. These modes accept audio input. In FSK D mode, audio inputs are not used (you would need a connection from the KAM+ FSK keying output to the K3's ACC connector), and anyway I believe the K3's 170 Hz shift is suboptimal for Pactor. You can listen to the output signal being transmitted using the MON level control on the K3's front panel. To set transmit audio levels, set the K3's meter display to ALC and adjust the Line In level (using the K3's MIC control) until you see 4-5 bars on the ALC meter. 73, Rich VE3KI W4JBB wrote: When trying to transmit, the radio goes into transmit, but I have no output. I did try changing the data mode to FSK, but the tone I got out did not sound like what I remember PACTOR sounding like. It sounded nothing like RTTY when in RTTY mode either. Here's what I have connected: KAM+K3 Pin 1 = TxD Line Out Pin 2 = GND PTT GND Pin 3 = PTT PTT Pin 6 = RxA Line In __ 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 results (1/22/12)
We had a nice net again today with decent propagation. There was no discussion, but we had 34 participants - seven of which were QRP. Have a great week. Here is the list of participants. Station NameQTH Rig S/N KC5RY George TX K3 5208 K4GCJ Gerry NC K3 1597 W5ETJ GaryTX K3 3227 KE5VDT Roger TX K3 6054 N7HTS GaryWY K3 6062QRP K6DSW Don CA K3 3138 KG9DNormTN K3 1304 N4RTRon AL K3 5436 NT5QDon TX K3 4179 K7DDM Dan AZ K2 6324 KB1FIY PhilMA K3 5577 K6TFZ Geoff CA K3 1190 WB8RAE BillNY K3 2389 NT1RBillME K3 124 QRP W0FMTerry MO K3 474 W4PFM PaulVA K3 1673 W7NMD Palmer AR K3 3779 W0CZKen ND K3 457 W8OVDaveTX K3 3139 K6VWE StanMI K3 650 KL7UW Ed AK K3 4043QRP AC0NM Glenn AZ K3 2843 WV5IDwayne TX K3 5287 K6LMP Lou CA K3 3805QRP W6VYBob CA K3 5788 AB7CE Roy MT K2 40 QRP KE5RBS Kelvin AR K2 7162QRP W6RSP Ken CA IC746PRO KE5GBC MikeTX K3 5047QRP AC7SB Peter WA K2 3016 WN7ORobert OR K3 3825 KJ4NGH Wes VA K3 252 W4RKS Jim AL K3 3618 NS7PPhilOR K3 1826 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
Re: [Elecraft] Tentative GREAT NEWS
Thanks for mentioning that, Fred. I'm still having trouble receiving signals on the sub-receiver although I just managed to work VP6T operating split on 10 meters a few minutes ago. That was encouraging! When I turn on SUB I can hear strong signals but they are very weak on the sub-receiver, as if there is a poor connection somewhere. I suppose if I can't figure out what it is that I either have incorrectly configured or am missing that I'll have to open up the rig and check all the internal connections and TMP cables---but I built this rig barely 6 months ago and can't imagine how any of those stubborn TMP connections got loose... 73, Jeff -- View this message in context: http://elecraft.365791.n2.nabble.com/New-K3-utility-software-required-message-on-my-K3-tp7212149p7214681.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] Heil PR781 Mic for Sale; Like New!
Hi Everyone, I have a really beautiful Heil PR781 for sale. It is extra to my needs after switching exclusively to a headset. This mic is lightly used and without cosmetic blemish. It has been stored in a wrap since it has not been used. I am not a smoker. Included is the Heil CC-1 XLR-K cable wired for Kenwood and compatible to the front 8 pin K3 mic connector. Also included is an 8 pin to 1/8 inch adapter for use on the mic connector on the back of the K3. I got beautiful reports with this mic. It is a great match for the K3 ( ask Wayne or Eric!). A $210 total cost from HRO. Selling for $159 plus shipping. Please contact me off the list with your questions or inquiries. dhh...@comcast.net 73 de N1LQ-Dave __ 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] Tentative GREAT NEWS
You have checked voltage?. You have tried other Power Supply?. You have had many problems at once, i have seen chaotic problem too associated to voltage problem, including bad filtering from SMPS. Edu YY4GMJ __ 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] Tentative GREAT NEWS
I'm using a heft Alinco linear power supply in combination with my solar panels/gel cell combo and there's no problem on the voltage now (although maybe a low-voltage condition may have started this whole mess yesterday as I might have only been on the solar/batteries power then). Thanks for mentioning this at any rate. Just worked another DXpedition operating split with the K3's 100 watts a moment ago (I still need to configure the KPA500 so they'll work together again) so at least I'm able to operate again. 73, Jeff -- View this message in context: http://elecraft.365791.n2.nabble.com/New-K3-utility-software-required-message-on-my-K3-tp7212149p7214729.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] ECN 22/23 Jan Z
Thank you very much for running the nets today. I appreciate it Fred. 73, Kevin. KD5ONS On 1/22/2012 7:00 PM, Fred Jensen wrote: 22/2300Z 20M W0CZ 569 KEN FARGO ND N7HTS 559 WY K3 #6062 K0DTJ 439 K1THP 589 DAVE CT K4JPN 429 W8OV 579 DAVE PLANO TX K3 #3139 K2DGM 559 MARK GREEN BROOK NJ 23/0100Z 40M W8OV 589 K0DTJ 589 RST's are what I sent. Pretty slow, K was 5, A was 21, band was sort of strange. Fred __ 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] Use of K3 voice keyer
My K3's voice keyer works great. I use the K3 with a CM500 boom mic/headset. When transmitting a recorded voice message, any slight touch, bump, or noise on the mic will stop the message. Is there a way to prevent a noise or bump to the mic from stopping the message (other than not bumping or making a noise on the mic, of course)? Also, is there a way to key the messages from an external key pad, kinda like the iMate is for the Icom 756Pro radios? 73, George George Wagner, K5KG Sarasota, FL __ 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] Use of K3 voice keyer
Hi George. Sounds to me like you are using VOX, and it is too sensitive. Try turning VOX off (e.g. press a PTT footswitch when you want to transmit live audio - the voice keyer automagically asserts PTT when triggered for the duration of the message) or at least turning down the VOX sensitivity. 73 Gary ZL2iFB -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft- boun...@mailman.qth.net] On Behalf Of georgek...@aol.com Sent: Monday, 23 January 2012 4:41 p.m. To: elecraft@mailman.qth.net Subject: [Elecraft] Use of K3 voice keyer My K3's voice keyer works great. I use the K3 with a CM500 boom mic/headset. When transmitting a recorded voice message, any slight touch, bump, or noise on the mic will stop the message. Is there a way to prevent a noise or bump to the mic from stopping the message (other than not bumping or making a noise on the mic, of course)? Also, is there a way to key the messages from an external key pad, kinda like the iMate is for the Icom 756Pro radios? 73, George George Wagner, K5KG Sarasota, FL __ 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] Unbelievable!
Hi Brian My experience with the KPA500 exactly mirrors yours. After some fairly long overs, my fan begins to sound a bit like a vacuum cleaner although nowhere near as loud as my former linear, a Yaesu FL7000. I do not find any cause for complaint. It is simply a fact of life. I am also bewildered by people who say they never hear the fan in their K3. Mine comes on almost from the start and I can always hear it, even with my headphones on. 73 Barry Simpson VK2BJ On 22 January 2012 11:40, Brian Alsop als...@nc.rr.com wrote: Like all things too good to be true, this posting about the KPA500 is a bit unbelievable. Like cars, YMMV. My experience with the KPA500 is much different. I suspect Jack only operates SSB. On CW expect the fan to come on after a few transmissions in under 30 seconds. Levels 1, 2 and sometimes 3 are often heard when doing some rag chewing at 500 W. The temperature stays below 70C as it should. RTTY is about the same with contest type operation. Expect the fan to operate as designed for these modes. It is not an absolutely quiet fan. I doubt Muffin type fans can be more quiet that what is used on the KPA500. One would have to go to a centrifugal fan like used on some of the really silent big amps to have it pin drop quiet. 73 de Brian/K3KO On 1/21/2012 23:19, Jack Berry wrote: I'm with you Fred. I wish Elecraft made cars. They would read our minds, last for 20 years and get 300 mpg! On Jan 21, 2012, at 4:03 PM, Fredric Serotafser...@msn.com wrote: I don't usually say much on these lists. But I have just finished building my KPA500, and I have to say that in my almost 50 years of hamming, this is the most incredible piece of equipment I have ever had. Now, I am not related to Elecraft in any way. They don't even know who I am. But I am so impressed with the quality of components and the engineering and thought that went in to this little package that I may sell my other amp (name starts with the first letter of the Greek alphabet) and buy another. My other amp is so noisy, the fan runs so loud and the QSK relays clickity-clack when sending CW. The KPA500 is as silent as can be, generates over 600 watts without any noise at all. The only time I can hear the fan is when I shut down the amplifier, it turns on to bleed the high voltage to make it safe if you want to poke inside. No other piece of equipment I have ever had does that. It follows the K3 without blinking. And the software gives you all the measurements, including temperature, that you would ever want to know. And the satisfaction of breaking a pile up with half the power I usually run, puts the fun back in operating. And all you guys can say is you don't like the color of the buttons. Unbelievable! Fred Serota, K3BHX __ 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 - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1416 / Virus Database: 2109/4757 - Release Date: 01/21/12 - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1416 / Virus Database: 2109/4759 - Release Date: 01/22/12 __ 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
