Re: [Elecraft] [KPA500] Low Power Use Cases
Hi Frank, I would not expect the waterfalls for the JT modes to change because the JT modes transmit only one tone at a time. Apart from turning the tx on and off, the amplitude of the signal does not change. Therfore there is no source for IMD that could result in a broader signal or splatter. You could even use a class C amplifier like you could for a fm transmitter. Greetings Ralf, DL6OAP Am 19.07.2013 um 00:55 schrieb Frank Precissi vad...@gmail.com: I think the best solution would be to try it both ways and see what kind of signal report you get. I'd be interested to see the two JT waterfalls compared side by side. 73, Frank KG6EYC On Thu, Jul 18, 2013 at 3:47 PM, Ron D'Eau Claire r...@cobi.biz wrote: I think it's a good question, but I cannot answer it. Most amps produce more distortion the more power they run. The question is whether the sum of distortion from both amps at lower power is less than one amp running at higher power. 73, Ron AC7AC -Original Message- On 7/18/2013 3:08 PM, Chris Johnson wrote: I love my KPA500. I don't use it enough because of all the low power digital I do. I was wondering if the quality of my signal would better if I let the KPA500 produce the output even if the wattage is 50 or less watts. If I drive it with 1 to 5 watts, it produces 10 to 50 watts. I like the thought of offloading the thermal load of my long JT65 JT9 duty cycles onto the KPA rather than my main rig which is a Flex 6700. You're likely to stimulate more replies than the Why is aeronautical VHF comm still AM? did. :-) I don't know anything about a Flex anything but, all amplifiers have non-zero distortion figures. Putting two in series will add up at least some if not all of them. The amp in your Flex followed by the KPA500 will most likely produce a poorer signal quality than just your Flex for the same power output. Secondly, the KPA500 was designed to produce several hundred watts with a few tens of watts drive [500W on any band for me takes between 25 and 30 watts drive]. That's probably the optimum operating point. Driving it with 5 watts should produce somewhere in the 50+ watts output range. 73, Fred K6DGW - Northern California Contest Club - CU in the 2013 Cal QSO Party 5-6 Oct 2013 - 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 -- FHC #4224 | 30MDG #6370 | DMC #5698 NAQCC #6554 | SKCC #10435 | FISTS #16155 __ 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] [KPA500] Low Power Use Cases
Chris, I cannot answer how well the KPA500 will run when driven 1 to 5w, but JT65 does NOT require a linear amp. It runs the same as CW, only stepping in frequency (makes different tones in a SSB receiver), so one can use a class-C amp if they want to with JT65. Therefore, there is no concern about intermod distortion (any more than if one ran CW). How efficient the KPA100 runs when lightly driven is another topic which I cannot answer. It does reason that the heat sink should easily take care of the heat at 50w, if designed for operation at 500w. If the KPA500 runs in class-AB it will dissipate some minimum level without RF drive. If it were class-A it would dissipate full power all the time. I run my 8877 far into class-B so there is almost no idle current without drive. In class-C it would be biased at cutoff. One might measure the current draw without drive, but often much of this is attributed to digital control components that have nothing to do with dissipation of the finals. Perhaps the Elecraft engineers have that number? 73, Ed - KL7UW Date: Thu, 18 Jul 2013 15:08:14 -0700 From: Chris Johnson o...@ozy.us To: elecraft@mailman.qth.net Reflector elecraft@mailman.qth.net Subject: [Elecraft] [KPA500] Low Power Use Cases Message-ID: b2a54e7d-2c09-488a-af09-55f224798...@ozy.us Content-Type: text/plain; charset=us-ascii I love my KPA500. I don't use it enough because of all the low power digital I do. I was wondering if the quality of my signal would better if I let the KPA500 produce the output even if the wattage is 50 or less watts. If I drive it with 1 to 5 watts, it produces 10 to 50 watts. I like the thought of offloading the thermal load of my long JT65 JT9 duty cycles onto the KPA rather than my main rig which is a Flex 6700. Does the KPA500 make a much cleaner signal than the built in barefoot amp because its running at such a higher voltage? I'm not too concerned about power efficiency comparisons, because we know its not more efficient doing it this way. :) Thx -Chris 73, Ed - KL7UW http://www.kl7uw.com dubus...@gmail.com Kits made by KL7UW __ 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] Relay control
I've been attempting to remote my station since 2006. I finally have a setup that is reliable. Since I had two K3's and not enough antennas for my dream station running SO2R, I sold one of the amps and replaced it with the KPA500 and KAT500 combo. I removed all the switching, control, filters, etc. and created TWO independent stations sharing all the antennas. One station is dedicated to remote operation and the other is dedicated to local operation. I found the Green Heron Engineering GH Everywhere system to be ideal to control every switch in the shack, from the rotor to the remote tower mounted coax switches. I did some other cool things to directly connect RS-232 devices to ethernet for improving reliability. I determined the GH engineering relays and software to be so much better than all the other crap I tried to do. That's after nearly six years of trying to get it right. In the end it was about $50.00 more that piecing it together and writing my own control application. So look into the Green Heron everywhere system. It was built by hams for hams. 73, Dick, WN3R Sent from my iPad __ 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 RX Audio
Hi All I am allmost ready to order my K3 but I keep reading about people that are unhappy with the RX audio, Is this still a problem or has there been changes made to slove it, Can someone point me to a good guide on how to set the RX up to remove the harsh sounding audio. I will mainly be using a headset as DXing is my main interest. Thanks Trevor EI2GLB __ 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 RX Audio
Trevor, I purchased a used K3 (s/n 281) a bit over two years ago and have never had a complaint about receive audio. I love this rig and will, in all likelihood, never buy another rig again. Good luck with your purchase decision. 73, --Ian Ian Kahn, KM4IK Roswell, GA EM74ua km4ik@gmail.com K3 #281, P3 #688, KPA500 #1468 HRD v5.x/6.0 Test Team On Fri, Jul 19, 2013 at 7:16 AM, Trevor Dunne trevor_du...@yahoo.comwrote: Hi All I am allmost ready to order my K3 but I keep reading about people that are unhappy with the RX audio, Is this still a problem or has there been changes made to slove it, Can someone point me to a good guide on how to set the RX up to remove the harsh sounding audio. I will mainly be using a headset as DXing is my main interest. Thanks Trevor EI2GLB __ 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 RX Audio
Trevor My #930 has always sounded nice to me with a pair of high end sennheiser headphones with far less background hiss than either the ts480 or IC7000 which preceded it. I did the dsp board swap a couple of years ago and that made it even more pleasant to listen to. In my opinion, even for its size, the built in speaker in the k3 is disappointing and I don't use it. 73 Stephen G4SJP Full of typos from my iPhone On 19 Jul 2013, at 13:16, Trevor Dunne trevor_du...@yahoo.com wrote: Hi All I am allmost ready to order my K3 but I keep reading about people that are unhappy with the RX audio, Is this still a problem or has there been changes made to slove it, Can someone point me to a good guide on how to set the RX up to remove the harsh sounding audio. I will mainly be using a headset as DXing is my main interest. Thanks Trevor EI2GLB __ 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] test- ignore
testing new internet and email account. 73, Bruce N1RX __ 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] set-up for PSK31
Ariel The K2 ALC indication is *not* the same as the K3 or KX3. With the K2, you want NO ALC bars. You are overdriving. Back off the audio drive until the last ALC bar just goes out. You should also check that compression is set to 1:1 (menu SSBC = 1-1). An advantage of using RTTY mode is that there is an independent menu setting for compression - SSBCr which appears in RTTY mode, so you can set the compression for SSB different than you do for RTTY mode. If you do use RTTY mode, you must set up the RTTY filters - at least the FL1 filter. Set the RTTY FL1 'width' to OP1, and then set the RTTY FL1 BFO the same as the LSB FL1 BFO. Go to RTTY rev (hold the REV button) and set the RTTYr FL1 BFO the same as the USB FL1 BFO. You may also want to set RTTY FL2 - FL4 to more narrow filters and center the passband at 1000 Hz. Those are good to use if there are strong nearby stations activating the AGC. You transmit only on the FL1 filter, but you can receive using a more narrow bandwidth. 73, Don W3FPR On 7/19/2013 1:11 AM, Ariel Jacala wrote: I need help in understanding why no one can seem to hear me on PSK with my K2 I am using Signalink USB RF is going out with PWR set to less than 25 watts Monitoring the TX - I can hear the modulation of the side band through a headphone and it seems to sound normal I have mode set to USB I am calling CQ and answering CQ's but no one seems to hear me. I have RTTY turned off I receive signals OK I have VOX set to PTT I have 2 bars on the ALC metering and I can't seem to get more than 2 bars - meter starts from the right I know I missed something in the basic setup but cant seem to know what it is Ariel NY4G Sent from my iPad __ 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 RX Audio
Hello Trevor, The audio of K3 may be ok for CW but it is only acceptable for SSB voice mode. Comparing K3 with my Icoms, I would prefer the audio from my Icoms. Having said that, I still used K3 in the recent IARU contest because of it excellent selectivity. I used CM500 during the contest. Actually, I was not quite care about the audio during the contest as long as I could copy weak signals among the big guns. Apart from audio, the manual notch of K3 is NOT within AGC loop and I consider it is the major short coming of its design. During the contest, I had a strong carrier adjoining my desire weak signal, the strong carrier desensed the AGC making the copy difficult. K3's manual notch was useless in this situation. I eventually chose the turn off the AGC to cope with this difficult suitation. TNX 73, Johnny VR2XMC 寄件人︰ Trevor Dunne trevor_du...@yahoo.com 收件人︰ Elecraft@mailman.qth.net Elecraft@mailman.qth.net 傳送日期︰ 2013年07月19日 (週五) 7:16 PM 主題︰ [Elecraft] K3 RX Audio Hi All I am allmost ready to order my K3 but I keep reading about people that are unhappy with the RX audio, Is this still a problem or has there been changes made to slove it, Can someone point me to a good guide on how to set the RX up to remove the harsh sounding audio. I will mainly be using a headset as DXing is my main interest. Thanks Trevor EI2GLB 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 RX Audio
I am mostly a rag chewer and enjoy armchair copy audio. To that end, I found the K3 was sadly lacking in good receive audio. Too much hiss and too tinny sounding. In a word, tiring to listen to for long periods of time. I thought about giving up and going back to my trusty TS480 with its inherent excellent audio. However, as good as the 480 is, when the chips are down for lousy conditions, the K3 shines. It is so flexible in operation. Therein lies the K3's strengths - flexible. I spend a long time trying many different settings with the K3 (learning a lot about the K3's operations along the way), I eventually found some settings of the K3's menus that do the job for me. My settings can be found at: http://www.w2blc.net/K3.htm However, note these are my settings, and you may not like them. They are meant for the 75 and 40 meter rag chewer - not the typical DX or contest settings. Your enjoyment may vary. I had a long-term power outage here the other day and had to resort to using the 480 (which had been gathering dust for several months). It works very well and does the job well for me - however - (yes, however) it just doesn't do as well as the K3 when it comes to summer static and adjacent channel interference. It doesn't have a P3 either. This got a little longer than I intended, but the K3 is the best rig I have ever used - and I have been using for over well fifty years. Bill W2BLC __ 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 RX Audio
Bill, Are you using headphones or a speaker? And can you please describe? 73, Ted W4NZ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Sent: Friday, July 19, 2013 9:48 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 RX Audio I am mostly a rag chewer and enjoy armchair copy audio. To that end, I found the K3 was sadly lacking in good receive audio. Too much hiss and too tinny sounding. In a word, tiring to listen to for long periods of time. I thought about giving up and going back to my trusty TS480 with its inherent excellent audio. However, as good as the 480 is, when the chips are down for lousy conditions, the K3 shines. It is so flexible in operation. Therein lies the K3's strengths - flexible. I spend a long time trying many different settings with the K3 (learning a lot about the K3's operations along the way), I eventually found some settings of the K3's menus that do the job for me. My settings can be found at: http://www.w2blc.net/K3.htm However, note these are my settings, and you may not like them. They are meant for the 75 and 40 meter rag chewer - not the typical DX or contest settings. Your enjoyment may vary. I had a long-term power outage here the other day and had to resort to using the 480 (which had been gathering dust for several months). It works very well and does the job well for me - however - (yes, however) it just doesn't do as well as the K3 when it comes to summer static and adjacent channel interference. It doesn't have a P3 either. This got a little longer than I intended, but the K3 is the best rig I have ever used - and I have been using for over well fifty years. Bill W2BLC __ 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 RX Audio
Ok, I see it on your website. 73, Ted W4NZ -Original Message- From: Ted Bryant [mailto:w...@comcast.net] Sent: Friday, July 19, 2013 11:02 AM To: 'elecraft@mailman.qth.net' Subject: RE: [Elecraft] K3 RX Audio Bill, Are you using headphones or a speaker? And can you please describe? 73, Ted W4NZ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill Sent: Friday, July 19, 2013 9:48 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 RX Audio I am mostly a rag chewer and enjoy armchair copy audio. To that end, I found the K3 was sadly lacking in good receive audio. Too much hiss and too tinny sounding. In a word, tiring to listen to for long periods of time. I thought about giving up and going back to my trusty TS480 with its inherent excellent audio. However, as good as the 480 is, when the chips are down for lousy conditions, the K3 shines. It is so flexible in operation. Therein lies the K3's strengths - flexible. I spend a long time trying many different settings with the K3 (learning a lot about the K3's operations along the way), I eventually found some settings of the K3's menus that do the job for me. My settings can be found at: http://www.w2blc.net/K3.htm However, note these are my settings, and you may not like them. They are meant for the 75 and 40 meter rag chewer - not the typical DX or contest settings. Your enjoyment may vary. I had a long-term power outage here the other day and had to resort to using the 480 (which had been gathering dust for several months). It works very well and does the job well for me - however - (yes, however) it just doesn't do as well as the K3 when it comes to summer static and adjacent channel interference. It doesn't have a P3 either. This got a little longer than I intended, but the K3 is the best rig I have ever used - and I have been using for over well fifty years. Bill W2BLC __ 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 RX Audio
Maybe I'm just deaf to the hiss everyone complains about, but I have to say my impression of K3 receive audio is considerably different. I do have the modified board, etc. And I haven't used the internal speaker since the first day I finished the radio. I do use a pair of RCA 40-5035 speakers that were sold by RatShack some years ago but are long discontinued. These look like the old Minimus 7 but are larger and MUCH better, with a 5 speaker and leaf tweeter. (I have 4 of these in the shack, and use them on everything). The K3 has enough gain to drive them with plenty of audio. In any case, the audio is full, clean, lacking in hiss, and just generally good. I do keep the bandwidth opened up to 3Khz or more if conditions are suitable, and the station(s) on the other end aren't using a straw for a transmit audio filter. I generally find that if the receive audio is tinny it's because of what's being transmitted … YMMV, of course Grant NQ5T On Jul 19, 2013, at 8:47 AM, Bill b...@w2blc.net wrote: I am mostly a rag chewer and enjoy armchair copy audio. To that end, I found the K3 was sadly lacking in good receive audio. Too much hiss and too tinny sounding. In a word, tiring to listen to for long periods of time.\ __ 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 RX Audio
Trevor Dunne wrote: I am allmost ready to order my K3 but I keep reading about people that are unhappy with the RX audio, Is this still a problem …. Hi Trevor, No, it is not still a problem. When the K3 first shipped, it had a few issues affecting audio that have all since been corrected. First, we added a balanced audio low-pass filter to the DSP board to remove sampling artifacts above 8 kHz that some operators could hear. Next, we made two rounds of firmware changes to improve in-band audio IMD. These changes included new AGC algorithms and a bug fix that corrected AGC attack/decay linearity. The K3's speaker amplifier is a type-AB linear device that can put out considerable power into a pair of 4-ohm speakers. While it's true that amplifiers in this class can have some low-level IMD products in the -60 to -80 dB range, I personally cannot hear them, and I have excellent hearing. The headphone amplifier is fully class A and will be even cleaner. What we hear from most K3 owners is how much they enjoy the full-stereo output of the radio, which applies to both speakers and headphones. We provide audio effects unique to the K3, including simulated stereo and left/right phase inversion (AFX MD menu entry), and full control over main/sub RX audio panning (L-MIX-R menu entry). These features can reduce fatigue and create a much richer audio experience. There is a small statistical probability that I'm biassed, so seek other opinions as well :) 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
Re: [Elecraft] scroll SVGA Received Info: Added Feature
Hi Steve, There really isn't much to scroll. Unlike a PC with gobs of memory, the SVGA is using an embedded processor with a limited amount of RAM. At best there would only be a few lines of text to scroll. A better work around would be to go to a smaller font with a higher resolution and set the data Rx and/or Tx windows larger. Paul -- View this message in context: http://elecraft.365791.n2.nabble.com/scroll-SVGA-Received-Info-Added-Feature-tp7576888p7576915.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 RX Audio
On 7/19/2013 8:45 AM, Wayne Burdick wrote: No, it is not still a problem. I'm a retired audio professional, and I've always been happy with the K3's audio. I have always used headphones for serious operating, and have outboard speakers for armchair monitoring. The only issues I have had with the K3 audio relate to really dumb implementation of the I/O (RF chokes in series with cable shields, transformers where they are not needed, 600 ohm resistors in series with transformer primaries, 600 ohm termination of inputs), some of which have been corrected. 73, Jim K9YC __ 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 and JT65 (aka digital modes) ALC problem
I am not new to JT65. I have an ALC “issue” in that I have no ALC, but I can change the computer drive and watch the RF power change from zero to 3 watts (power setting – but not over 3w) AND I am making contacts (and with similar signal strength both paths)… I am working Europe and I am heard in eastern Europe (5300 mi) via “reporter” – SO, it “is” working. BTW, I have tried different mike settings all the way to full drive. I am connected direct from the PC to the KX3 via the optional cable set. I also took the time to flatten the RX and TX EQ settings. Didn’t help the ALC “issue” but the flatter RX can be seen by the JT65 waterfall – as it is flatter as expected I “guess” if it works, don’t fix it… I will try RTTY or PSK, too and see what it does to ALC. What do others see who are running JT65 on your KX3? Does JT65 have a “voice” that the DSP/ALC doesn’t “see”? After I wrote the above and posted to the KX3 group, (with no reply)... Today I tried PSK using WinWarbler and found: Same problem, until - for some reason - I lowered the mike drive (earphone output) from 60 to 6 and ALC appeared! I guess I didn't change the computer drive enough. It appears that ALC goes to zero when over driven? Feature or problem? Things still seem to work as I made a 20M 4W PSK31 QSO (poor copy on other end - running 20W). And a couple of JT65 contacts... Question, does DATA mode use the TX/RX EQ? It would be nice to leave the EQ's set for SSB and have things flat for digital modes. I guess I need to do some more reading. 73, Steve WB3LGC __ 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 KAT100-1 question
Finished the KAT100-1 tuner and I'm seriously impressed with this unit!! Question, my K2 has installed the KPA100 amp in the K2, I noticed I have 12vdc connector at the rear of the K2, can I use this 12vdc source to power the KAT100-1 instead of running a separate lower lead to my 12v supply? The specs say the KAT100-1 pulls a max of 700 ma so it should be ok? What say U? Tnx and 73 ed __ 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] AFEDRI SDR for K3 Panadapter
Dave, I use the Afedri with my K3. Works great with NaP3 as well as SDR-Radio, Spectravue, CuteSDR. One cable to the radio (SMA-BNC) and USB cable to the computer. I also connected it to my networking switch so I can use other apps that support it's networking mode. I chose it for it's simplicity with just a cable either way. No seperate sound cards etc. Works fine no problems on iMac run OSX 10.8 and bootcamp in Windows 7/64. Let me know if you want any more info. Michael, AA5SH On Tue, Jul 2, 2013 at 8:15 AM, Dave C k8j...@gmail.com wrote: Hi all, I've been considering getting an AFEDRI SDR to use as both a panadapter for the K3 and also to use as a general-purpose utility receiver. It's in the vicinity of $250-$300, has both Ethernet and USB connections, and can handle 1.25 MHz of bandwidth on the Ethernet connection or 384 KHz on the USB connection. (I don't have the specs up in front of me but that's from memory). I thought I would ask here if anybody had one of the AFEDRI units and/or if anybody had used one with the K3. I know it's one of the lower-end SDRs so it has some limitations in the front end but I thought the Ethernet/USB/bandwidth aspects looked nice. I have used a Softrock that I built as a panadapter and it works but have been thinking about upgrading. Thanks and 73, Dave K8JDC __ 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 KAT100-1 question
As always Don, thanks for the adviceI should have looked at the circuit myself..73 Eddy From: Don Wilhelm w3...@embarqmail.com To: Eddy k6...@yahoo.com Cc: elecraft@mailman.qth.net elecraft@mailman.qth.net Sent: Friday, July 19, 2013 9:49 AM Subject: Re: [Elecraft] K2 KAT100-1 question Eddy, Run the wire - that connector on the K2 is an input only. There is a series reverse voltage protection diode in the K2 that will prevent current from flowing *out* of that connector. One use for that connector is to use two power sources with the K2. A high current power supply connected to the KPA100, and a battery-backed smaller supply (like a Smartcharger connected to the battery) connected to the base K2 coaxial jack and also to the KAT100. Should AC power fail, the battery will take over and your operation can continue although at a lower power. The changeover is automatic - if power drops on the KPA100, the base K2 will still operate. 73, Don W3FPR On 7/19/2013 12:16 PM, Eddy wrote: Finished the KAT100-1 tuner and I'm seriously impressed with this unit!! Question, my K2 has installed the KPA100 amp in the K2, I noticed I have 12vdc connector at the rear of the K2, can I use this 12vdc source to power the KAT100-1 instead of running a separate lower lead to my 12v supply? The specs say the KAT100-1 pulls a max of 700 ma so it should be ok? __ 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] K1 FP washers...and another K1 FP PCB Flexing Issue (Rattle Sounds)
David/AC4BN wrote: I only had one washer on the standoff, and furthermore I had it on the wrong side of the PC board! I'm glad you found the root cause of your mysterious problem. Probably that construction fox paws would be a lot more common, save for the manual's illustration that shows the desired configuration. There's another K1 FP PCB flexing issue that sometimes draws comment. Often the four corners of the front panel PCB do not rest solidly and firmly against the front side of the associated four aluminum 2-D fasteners that are stationary on the body of the K1. This causes a slightly mushy feel when depressing many of the front panel buttons, as the button will recede slightly behind the front panel as the PCB flexes. Then when the PCB corner comes to solid rest on the corner fasteners, continuing to push results in the desired final crisp snap as the button makes up. Another consequence of loose corner fit is that at higher AF volumes of the K1's internal speaker, the FP PCB corners may audibly rattle and vibrate against the metal fasteners. All that can be very easily corrected by putting a small square of foam tape on the front of the 2-D fasteners that are supposed to contact the corners of the FP PCB. I use double-sided foam tape, with the protective layer left in place on the side that will be in contact with the corner of the FP PCB. (This seems like something that should be included with each K1. But it was suggested 12 years ago, and it doesn't seem likely now.) The result is no button mushy feel, and no vibration at higher AF volumes when using the internal speaker. Mike / KK5F __ 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] K1 FP washers...and another K1 FP PCB Flexing Issue (Rattle Sounds)
Mike and all, It is easier and just as effective to put the tape squares on the back of the front panel board rather than on the 2D connectors. 73, Don W3FPR On 7/19/2013 4:29 PM, Mike Morrow wrote: There's another K1 FP PCB flexing issue that sometimes draws comment. Often the four corners of the front panel PCB do not rest solidly and firmly against the front side of the associated four aluminum 2-D fasteners that are stationary on the body of the K1. This causes a slightly mushy feel when depressing many of the front panel buttons, as the button will recede slightly behind the front panel as the PCB flexes. Then when the PCB corner comes to solid rest on the corner fasteners, continuing to push results in the desired final crisp snap as the button makes up. Another consequence of loose corner fit is that at higher AF volumes of the K1's internal speaker, the FP PCB corners may audibly rattle and vibrate against the metal fasteners. All that can be very easily corrected by putting a small square of foam tape on the front of the 2-D fasteners that are supposed to contact the corners of the FP PCB. I use double-sided foam tape, with the protective layer left in place on the side that will be in contact with the corner of the FP PCB. (This seems like something that should be included with each K1. But it was suggested 12 years ago, and it doesn't seem likely now.) The result is no button mushy feel, and no vibration at higher AF volumes when using the internal speaker. __ 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 - RTTY FSK-D power
If I set power to 100 watts on CW the K3 setting and my Array Solutions Powermaster power meter read the same within a watt or two. Leaving the K3 power set at 100 watts on CW and switch to DATA and run MMTTY diddles , the Powermaster is reading 116 watts. Sending RTTY text it bounces between 115 and 105 watts or so. K3 SN 7536 latest non beta firmware. Powermaster or something in K3 ??? This is not Powermaster II and I have two couplers , both do the same. SN2441 box. Hank K7HP __ 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 - RTTY FSK-D power
Hank, My initial guess is that it is your Powermaster. I have recently built a 4 State QRP QRPometer to use when testing QRP transmitters. It is an accurate meter as long as the waveform is a good sine wave (Good CW signal), but I have also discovered that it does not read correctly if the waveform is other than a clean CW signal (like PSK31 or RTTY). The cause is the detection methods used in the meter. I cannot say that your Powermaster is doing the same thing, but I will venture a guess that it is related. The K3 does a very good job of controlling power at the requested level, no matter what the mode. But then your question is valid - I don't know your particular answer, and I do not have a Powermaster meter to test with. I am only offering my suspicion. 73, Don W3FPR On 7/19/2013 4:45 PM, Pfizenmayer wrote: If I set power to 100 watts on CW the K3 setting and my Array Solutions Powermaster power meter read the same within a watt or two. Leaving the K3 power set at 100 watts on CW and switch to DATA and run MMTTY diddles , the Powermaster is reading 116 watts. Sending RTTY text it bounces between 115 and 105 watts or so. K3 SN 7536 latest non beta firmware. Powermaster or something in K3 ??? This is not Powermaster II and I have two couplers , both do the same. SN2441 box. __ 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 KAT100-1 question
Eddy, Run the wire - that connector on the K2 is an input only. There is a series reverse voltage protection diode in the K2 that will prevent current from flowing *out* of that connector. One use for that connector is to use two power sources with the K2. A high current power supply connected to the KPA100, and a battery-backed smaller supply (like a Smartcharger connected to the battery) connected to the base K2 coaxial jack and also to the KAT100. Should AC power fail, the battery will take over and your operation can continue although at a lower power. The changeover is automatic - if power drops on the KPA100, the base K2 will still operate. 73, Don W3FPR On 7/19/2013 12:16 PM, Eddy wrote: Finished the KAT100-1 tuner and I'm seriously impressed with this unit!! Question, my K2 has installed the KPA100 amp in the K2, I noticed I have 12vdc connector at the rear of the K2, can I use this 12vdc source to power the KAT100-1 instead of running a separate lower lead to my 12v supply? The specs say the KAT100-1 pulls a max of 700 ma so it should be ok? __ 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 RX Audio
While the internal speaker is certainly adequate for most listening, you want headphones or a pair of external speakers to enjoy all of the possibilities when using AFX or the subreceiver. And there is no doubt the pair of inexpensive bookshelf speakers I have produce better audio than the internal speaker, but that is not surprise to me. Further, the K3 has a multi-band audio equalizer accessed through the menu that allows you to tailor the audio bandpass to your liking. 73, Ron AC7AC -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Trevor Dunne Sent: Friday, July 19, 2013 4:16 AM To: Elecraft@mailman.qth.net Subject: [Elecraft] K3 RX Audio Hi All I am allmost ready to order my K3 but I keep reading about people that are unhappy with the RX audio, Is this still a problem or has there been changes made to slove it, Can someone point me to a good guide on how to set the RX up to remove the harsh sounding audio. I will mainly be using a headset as DXing is my main interest. Thanks Trevor EI2GLB __ 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] PR6-10
My PR6-10 came in today, and in my excitement, I forgot to remove jumper P2 when I replaced the PR6. The preamp seems to work gangbusters with it in. I have the CTRL wire going to pin 1 of the DE 15 connector and of course CONFIG:DIGI set for 6, 10, and 12M. The instructions say that with that configuration, the jumper should be removed. Or have I misread? Whoever put the case screws in must have used an impact driver. Those babies were TIGHT! 73, Mike NF4L __ 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] PR6-10
Hi Mike, That just means your preamp is powered up all the time. You can check that by turning off DIGOUT1 for one of the bands and tapping RX ANT. It's no big deal to have the preamp powered up all the time, I guess, but it does mean you cannot use a receive antenna on another band, such as 160 meters. The preamp has to be off so an external receive antenna will switch through the preamp. 73, Fred KE7X Fred Cady The Elecraft K3: Design, Configuration and Operation 2nd ed The Elecraft KX3 - Going for the summit www.ke7x.com or www.lulu.com (Lulu 20% discount for July: JULYBOOKS13) (Working on the KPA500 and KAT500) fcady at ieee dot org -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft- boun...@mailman.qth.net] On Behalf Of Mike Reublin Sent: Friday, July 19, 2013 3:59 PM To: Elecraft Reflector Subject: [Elecraft] PR6-10 My PR6-10 came in today, and in my excitement, I forgot to remove jumper P2 when I replaced the PR6. The preamp seems to work gangbusters with it in. I have the CTRL wire going to pin 1 of the DE 15 connector and of course CONFIG:DIGI set for 6, 10, and 12M. The instructions say that with that configuration, the jumper should be removed. Or have I misread? Whoever put the case screws in must have used an impact driver. Those babies were TIGHT! 73, Mike NF4L __ 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 RX Audio
...I found the K3 was sadly lacking in good receive audio. Too much hiss and too tinny sounding... tiring to listen to for long periods of time. My sediments exactly, when I first got my K3 (#1823). I'm an ex-audio pro too. However, after the audio board upgrade, and the 'newer' software (4.51?), I'm happy with the audio quality. Definitely a worthwhile mod. Only one thing left to do to make me ecstatic - separate audio gain menu settings for headset and speakers. Lo gain setting is best for my headset, but nowhere near loud enough for a speaker (I've tried many external speakers). High gain setting hurts my ears inside my headset, but has good level for speaker monitoring while I'm in the shack. You could consider this a feature request. 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] [K2] set-up for PSK31
As Don said, you're overdriving your radio. Your signal may have some intermodulation products on it, which might explain why you're not getting any responses. When I see a bad signal I usually DO respond and let the operator know they have a problem with their setup.. as I would hope someone would do for me. You might try the PSK Reporter website( Google it) which will tell you if your signal is getting out. You could have a multitude of other issues... you didn't say what type of antenna you were using and if there was any info on whether it had worked in the past. 73, David. AJ4TF -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-set-up-for-PSK31-tp7576899p7576929.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] New versions of Win4K3Suite
Hello, There are two new version for Win4K3Suite in the works. Please take a look at http://va2fsq.com/?page_id=612 I am looking for additional suggestions, especially for the upcoming Advanced edition. Thanks, Tom va2fsq.com Check the video: https://www.youtube.com/watch?v=Api2nomzg3U __ 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] set-up for PSK31
David Thanks for the tip. It looks like I am being copied by stations listening on PSK Reporter. One as close as 5 miles away and another at 6000 miles. I did as Don has suggested. W4DJW heard me on 20m. Not sure still why I do not get a response. I will ask one of the local hams monitor my signal quality. Ariel NY4G Sent from Windows Mail From: aj4tf Sent: July 19, 2013 8:29 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] [K2] set-up for PSK31 As Don said, you're overdriving your radio. Your signal may have some intermodulation products on it, which might explain why you're not getting any responses. When I see a bad signal I usually DO respond and let the operator know they have a problem with their setup.. as I would hope someone would do for me. You might try the PSK Reporter website( Google it) which will tell you if your signal is getting out. You could have a multitude of other issues... you didn't say what type of antenna you were using and if there was any info on whether it had worked in the past. 73, David. AJ4TF -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-set-up-for-PSK31-tp7576899p7576929.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] Scroll SVGA Received Info: added feature
Paul, is it possible to increase the ram in the SVGA. In keeping up with your competition both the Icom 7600 and the TS-990 have enough memory to make number of digital QSOs and even offer a time stamp with the contact allowing one to scroll through the contacts using the up and down keys so one can add them to one's logging program. Just interested in keeping up with the Jones, ha. Thanks for listening and 73, Steve W0SZ __ 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
