[Elecraft] Ok what am I doing wrong? Low power out
I've not looked for too long but things were working earlier... However now even though I have PWR set to 100 Watts I only get about 8 out and the K3 PWR meter only shows 1 bar being highlighted. ~Brett __ 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] Startup call sign
On Fri, 25 Jun 2010 21:56:14 -0400, "Dick Roth, KA1OZ" wrote: Yep! Both of mine say "Stln frm N5GE Call 911". BT 73 ES GUD LUK DE N5GE, QCWA LIFE MEMBER 35102 AR SK n...@n5ge.com http://www.n5ge.com >There is a routine in the K3 Utility that allows you to edit the start >up banner. Under the "Configuration" tab of the Utility will be "Edit >Power On Banner". > > >Jeffrey A. Steinberg wrote: >> >> >> How do you change this? I bought my K3 used and can't >> find it in the manual config menus. > >[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
Re: [Elecraft] N6KR's Field Day suggestions for the KX1, K1, K2, and K3
Get the Energizer L91s if you can find them. They will outperform other lithium AAs. The US military wont use any other AA. Brian Denley http://home.comcast.net/~b.denley/index.html - Original Message - From: "Wayne Burdick" To: "Elecraft Reflector" Sent: Friday, June 25, 2010 8:51 PM Subject: [Elecraft] N6KR's Field Day suggestions for the KX1, K1, K2, and K3 > KX1: > > - If you're going for minimum station weight but still want about 2 > watts out, try a set of non-rechargeable lithium AA batteries. The > price isn't too bad. They're extremely light, and you'll get an entire > field day out of one set (as long as you listen a lot more than you > transmit). > ml __ 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] SSB net cancelled this week
The weekly Elecraft SSB net will not take place this Sunday due to field day. See you next week (Sunday, July 4 at 1800z on 14.314 MHz). Have great field day. __ 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] Startup call sign
There is a routine in the K3 Utility that allows you to edit the start up banner. Under the "Configuration" tab of the Utility will be "Edit Power On Banner". Jeffrey A. Steinberg wrote: > > > How do you change this? I bought my K3 used and can't > find it in the manual config menus. [snip] -- 73, Dick ka1oz Middleborough, MA Radio: Elecraft K3/100(Kit) SN 859 Antenna: Titan-DX __ 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] N6KR's Field Day suggestions for the KX1, K1, K2, and K3
Hello Wayne, Very good article indeed. Could you keep this somewhere in your website for future easy reference (if you haven't done so)? 73 Johnny VR2XMC - 郵件原件 寄件人﹕ Wayne Burdick 收件人﹕ Elecraft Reflector 傳送日期﹕ 2010/6/26 (六) 8:51:10 AM 主題： [Elecraft] N6KR's Field Day suggestions for the KX1, K1, K2, and K3 KX1: - If you're going for minimum station weight but still want about 2 watts out, try a set of non-rechargeable lithium AA batteries. The price isn't too bad. They're extremely light, and you'll get an entire field day out of one set (as long as you listen a lot more than you transmit). - There's no need to use coax. A wire tossed in a tree (20-25') plus one ground counterpoise wire per band, both connected to a BNC to binding post adapter, works quite well as a portable antenna system. On the very first FD with the prototype KX1, I tried an "inverted vertical": Climb a tree and hang a wire down from the hot lead. Made at least one QSO this way. K1: - The K1 is capable of putting out up to 7 W from a freshly-charged internal battery pack. But you'll get more mileage out of it if you turn down the power. What I like to do is set power to about 1 to 2 watts, initially, and try to work all of the strong stations on a band. When the pickings get slim, set power back to 5 W and start another round of hunt 'n' pounce. - Use a narrow crystal filter bandwidth (say 200 Hz). You'll find lots of QRP stations this way, in the vicinity of 7030-7040 and 14060. See the FLx menu entry. (There's a K1 quick-reference card on our K1 page.) K2 and K3: - Use the real-time clock (just kidding :) - If you have a KAT2 or KAT3, try connecting two random-wire antennas with different orientations. Tune up on both. You can then quickly compare the two antennas with a tap of ANT. This can make an S-unit or more of difference in both RX and TX mode, improving your QRO rate when calling other stations. Sometimes the difference won't be apparent in RX mode due to fading, but if they don't come back to you on one antenna, try the other. K3: - In the heat of battle I typically use two filter setups, one narrow, one wide. You can use the "I" and "II" switches to toggle between two current setups, or use the NORM 1/2 method (see page 24 of the Owner's manual). - If you have stereo headphones or stereo speakers, use turn AFX on to reduce operating fatigue. (The stereo simulation makes the audio feel "bigger" and more interesting.) I like DELAY 4 or DELAY 5 best. - Use the sub-RX effectively. For example, if you're having trouble working one station, keep VFO A parked there, but turn on the sub and look for others using VFO B. Hit the A/B switch to alternate between them. Also try diversity mode, especially from 20 m down, if you have two antennas. This can dramatically improve copy during QSB. Especially helpful if you're calling CQ and have a good signal -- you'll be able to pull out more of the weak ones. - CW ops: Use QRQ CW mode (set CONFIG:CW QRQ to ON). Break in is incredibly fast, saving your batteries by allowing you tell when the called station hasn't heard you, and stop transmitting sooner. You can't use RIT or SPLIT yet with QRQ, but you can use the sub receiver: Just transmit on VFO A and receive on VFO B with the sub turned on. 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
[Elecraft] N6KR's Field Day suggestions for the KX1, K1, K2, and K3
KX1: - If you're going for minimum station weight but still want about 2 watts out, try a set of non-rechargeable lithium AA batteries. The price isn't too bad. They're extremely light, and you'll get an entire field day out of one set (as long as you listen a lot more than you transmit). - There's no need to use coax. A wire tossed in a tree (20-25') plus one ground counterpoise wire per band, both connected to a BNC to binding post adapter, works quite well as a portable antenna system. On the very first FD with the prototype KX1, I tried an "inverted vertical": Climb a tree and hang a wire down from the hot lead. Made at least one QSO this way. K1: - The K1 is capable of putting out up to 7 W from a freshly-charged internal battery pack. But you'll get more mileage out of it if you turn down the power. What I like to do is set power to about 1 to 2 watts, initially, and try to work all of the strong stations on a band. When the pickings get slim, set power back to 5 W and start another round of hunt 'n' pounce. - Use a narrow crystal filter bandwidth (say 200 Hz). You'll find lots of QRP stations this way, in the vicinity of 7030-7040 and 14060. See the FLx menu entry. (There's a K1 quick-reference card on our K1 page.) K2 and K3: - Use the real-time clock (just kidding :) - If you have a KAT2 or KAT3, try connecting two random-wire antennas with different orientations. Tune up on both. You can then quickly compare the two antennas with a tap of ANT. This can make an S-unit or more of difference in both RX and TX mode, improving your QRO rate when calling other stations. Sometimes the difference won't be apparent in RX mode due to fading, but if they don't come back to you on one antenna, try the other. K3: - In the heat of battle I typically use two filter setups, one narrow, one wide. You can use the "I" and "II" switches to toggle between two current setups, or use the NORM 1/2 method (see page 24 of the Owner's manual). - If you have stereo headphones or stereo speakers, use turn AFX on to reduce operating fatigue. (The stereo simulation makes the audio feel "bigger" and more interesting.) I like DELAY 4 or DELAY 5 best. - Use the sub-RX effectively. For example, if you're having trouble working one station, keep VFO A parked there, but turn on the sub and look for others using VFO B. Hit the A/B switch to alternate between them. Also try diversity mode, especially from 20 m down, if you have two antennas. This can dramatically improve copy during QSB. Especially helpful if you're calling CQ and have a good signal -- you'll be able to pull out more of the weak ones. - CW ops: Use QRQ CW mode (set CONFIG:CW QRQ to ON). Break in is incredibly fast, saving your batteries by allowing you tell when the called station hasn't heard you, and stop transmitting sooner. You can't use RIT or SPLIT yet with QRQ, but you can use the sub receiver: Just transmit on VFO A and receive on VFO B with the sub turned on. 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] FWIW: Why there's a real-time clock in the K3
> I do manual logging when the PC is turned off Ditto on philosophy of watch, brushed aluminum clock, and manual logging. I leave it on the subrx display spot all the time (no subrx here) I'm glad they're there (both K2 and K3). On Fri, Jun 25, 2010 at 7:31 PM, Wayne Burdick wrote: > I do manual logging when the PC is turned off. I also use the "ALARM" > function of the K3 to remind me when it's time to stop doing email and > start a contest. > > I don't wear a watch since they tend to get snagged on things. Most > also conduct electricity, and my hand is often buried inside a rig. I > don't want one of those $19 brushed-aluminum 24-hour clock thingies > that sits on top of the rig, especially when operating portable. My > iPhone tells time pretty well but stays in my pocket. I can't see the > wall clock with my glasses off. > > +/- 2 seconds per day is just inaccurate enough to remind me to tune > into WWV about once a month :) > > 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] Clock Accuracy
I KNOW WHAT TIME IT IS IT'S TIME TO QUIT!! ENUF ALREADY! __ 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 at Ham-Radio Friedrichafen, Germany, this weekend
Just being back from Ham-Radio exhibition and can confirm that K3/P3/Eric are there and alive :-) It was pleasure for me to met him personally and see new P3 unit in a action. Thanks for coming overseas :-) 73! Lexa, ok1dst P.S.: By the way it is very tough job to be on the booth for a whole day :-( (personal experience) 2010/6/22 Eric Swartz - WA6HHQ, Elecraft > A note for our international customers: I will be at the Elecraft booth > at Ham-Radio Friedrichafen, Germany, this weekend, June 25-27. > > Booth A1-751a > > I'll be demonstrating the K3 and P3 Panadapter along with our other > products. > http://www.hamradio-friedrichshafen.de/ham-en/index.php > > See you all there! I look forward to meeting with you. > > 73, Eric WA6HHQ > > > > > > __ > 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] FWIW: Why there's a real-time clock in the K3
I do manual logging when the PC is turned off. I also use the "ALARM" function of the K3 to remind me when it's time to stop doing email and start a contest. I don't wear a watch since they tend to get snagged on things. Most also conduct electricity, and my hand is often buried inside a rig. I don't want one of those $19 brushed-aluminum 24-hour clock thingies that sits on top of the rig, especially when operating portable. My iPhone tells time pretty well but stays in my pocket. I can't see the wall clock with my glasses off. +/- 2 seconds per day is just inaccurate enough to remind me to tune into WWV about once a month :) 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] Low headphone audio level
What maybe curious is that I bet Pete used that same headset on another ( JA) radio with no problems. -- View this message in context: http://elecraft.365791.n2.nabble.com/Low-headphone-audio-level-tp5223384p5224021.html Sent from the [K3] 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] Low headphone audio level
Judging from the various replies I have seen in the past, it would seem that the drivers used in Heil headsets do vary. Heil is very sparse with information about the amateur grade equipment, other than pictures and good words. His Pro line is spec'ed better, I guess those customers are not so inclined to buy on pretty pictures and a name. As Jim Brown indicated, one can do better elsewhere and at lower prices. Sorry, but my cynical side is showing today! 73, Don W3FPR N1JM wrote: > I wish Heil would put the headphone impedances on his website. He must supply > a wide variance in headphone impedances with his boom headsets, maybe > amongst the same models. > __ 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] Clock Accuracy (the moral of the story)
Just to add a note of ? something to this thread You are all correct that the clock is a really meaningless addition to the K3 and in no way would I want any of the Elecraft gang wasting a minute on it.. I just find it an interesting little exercise to see if it could be made more accurate - for fun only - and only when I have another reason to open it up. I DON'T use the K3 clock - like most of you I have the darn things everywhere and the computer is synced to a time standard... it is just a tiny niggling thing that would be nice to be better (on MY own time and effort) I am extraordinarily pleased with my radio AND more importantly the excellent response from K3 - I was most impressed to have a tech answer from Wayne himself within minutes as to a 'homebrew' possible adjustment. Cheers to all 73 John VE3NFK -- View this message in context: http://elecraft.365791.n2.nabble.com/Clock-Accuracy-tp5218803p5224010.html Sent from the [K3] 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] PA set up issues
Andy, I would first do the wattmeter calibration as indicated in the manual. You can make it match your Bird if that is what you trust. After that use K3 Utility to do the 5 and 50 watt (and 1 mW if you have the KXV3). Using the K3 Utility to do the TX Gain calibration is a snap, you just sit back and watch it change bands and 'do its thing'. Re-check your conditions after those steps. 73, Don W3FPR GD0TEP wrote: > Hi to the group, > > > > I've just installed my KPA3 100w upgrade into my factory built K3. > > > > I've followed the calibration procedure starting out with 5w per band, and > then moved to 50w per band, as per instructions. > > > > I must be missing something, or perhaps not understand what I'm reading as > once I've completed the calibration, some of the HF bands are fine with 100w > out, other bands seem to upset the radio as follows: When using the radio > into a 200w 50 ohm load, and measuring power with a bird 43, I can see how > the power increases as I raise the power output, yet on certain bands there > seems to be a point where at around 85w to 90w the power out appears to fold > back and the radio switches itself off. > > > > There doesn't seem to be any link to what band is causing the problem, as I > have the problem on 160m, 30m 21m 12m, 10m and 6m. > > > > So, what am I missing, or perhaps I should ask 'what have I done wrong or > forgotten to do'?? > > > __ 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] Clock Accuracy and Outlook 2010 conversation deletion
D for Delete works better than R for ReadGrin Woiks fer me Gary On Sat, Jun 26, 2010 at 7:31 AM, wrote: > > Unsubscribe > > > In a message dated 6/25/2010 11:39:01 A.M. Eastern Daylight Time, > n...@elecraft.com writes: > > Maybe we've had enough postings about the clock :) > > Thanks, > > 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 > -- Gary VK4FD - Motorhome Mobile http://www.qsl.net/vk4fd/ K3 #679 For everything else there's Mastercard!!! __ 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] Clock Accuracy and Outlook 2010 conversation deletion
Unsubscribe In a message dated 6/25/2010 11:39:01 A.M. Eastern Daylight Time, n...@elecraft.com writes: Maybe we've had enough postings about the clock :) Thanks, 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] Low headphone audio level
I wish Heil would put the headphone impedances on his website. He must supply a wide variance in headphone impedances with his boom headsets, maybe amongst the same models. -- View this message in context: http://elecraft.365791.n2.nabble.com/Low-headphone-audio-level-tp5223384p5223825.html Sent from the [K3] 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] Low headphone audio level
On Fri, 25 Jun 2010 13:50:30 -0700, John Merrill wrote: >I have a ProSet and it is fine at around 10 o'clock. I wonder if it an >impedance thing? It's a combination of impedance and sensitivity. Headphone output stages are essentially constant voltage devices -- that is, they have a low output impedance -- but good designers add a small value of resistor in series so that the output devices don't fail when accidentally driving a short circuit. Headphones are made in a range of impedances from about 8 ohms to about 600 ohms. Most pro headphones are in the range of 50-200 ohms. The higher the inpedance, the more voltage it takes to drive them. But the higher the impedance, the less current the headphone amp needs to supply. In other words, 600 ohm phones need much more VOLTAGE to get the same power as 100 ohm phones. In general, a headphone output will be happy with any headphone impedance equal to or greater than its rated load. The bottom line question is, can you make the headphones loud enough with the audio gain control to satisfy your ears without audible distortion? If the answer is yes, be happy. If it isn't consider buying a new set of cans. The Yamaha CM500 is a winner, under $50. 73, Jim Brown 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] PA set up issues
Hi to the group, I've just installed my KPA3 100w upgrade into my factory built K3. I've followed the calibration procedure starting out with 5w per band, and then moved to 50w per band, as per instructions. I must be missing something, or perhaps not understand what I'm reading as once I've completed the calibration, some of the HF bands are fine with 100w out, other bands seem to upset the radio as follows: When using the radio into a 200w 50 ohm load, and measuring power with a bird 43, I can see how the power increases as I raise the power output, yet on certain bands there seems to be a point where at around 85w to 90w the power out appears to fold back and the radio switches itself off. There doesn't seem to be any link to what band is causing the problem, as I have the problem on 160m, 30m 21m 12m, 10m and 6m. So, what am I missing, or perhaps I should ask 'what have I done wrong or forgotten to do'?? 73, Andy http://gd0tep.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] Low headphone audio level
I have a ProSet and it is fine at around 10 o'clock. I wonder if it an impedance thing? On Fri, Jun 25, 2010 at 1:35 PM, Pete Smith wrote: > It is already set on HI. > > 73, Pete N4ZR > > The World Contest Station Database, updated daily at > www.conteststations.com > The Reverse Beacon Network at http://reversebeacon.net, blog at > reversebeacon.blogspot.com, > spots at telnet.reversebeacon.net, port 7000 > > > > On 6/25/2010 4:04 PM, N1JM wrote: > >> Have you tried to change AF gain in the menu? >> >> > __ 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] Low headphone audio level
Ah, I see - it also seems as if one side sometimes cuts in on the headphones before the other, also contributing to the impression that maybe the plug isn't in all the way. 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com, spots at telnet.reversebeacon.net, port 7000 On 6/25/2010 3:23 PM, Lyle Johnson wrote: > >> A tangentially related question - when I plug into the headphone >> jack, it appears that I have to push the phone plug into the jack >> quite firmly before the speak is cut off. Again, normal? > > There is a delay of a second or so between when the headphones are > detected and the speaker amplifier cuts off. This delay may cause you > to think you need to press more firmly :-) > > 73, > > Lyle KK7P > > > __ 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] Low headphone audio level
And my AF gain is set to low. On Fri, Jun 25, 2010 at 1:50 PM, John Merrill wrote: > I have a ProSet and it is fine at around 10 o'clock. I wonder if it an > impedance thing? > > > On Fri, Jun 25, 2010 at 1:35 PM, Pete Smith wrote: > >> It is already set on HI. >> >> 73, Pete N4ZR >> >> The World Contest Station Database, updated daily at >> www.conteststations.com >> The Reverse Beacon Network at http://reversebeacon.net, blog at >> reversebeacon.blogspot.com, >> spots at telnet.reversebeacon.net, port 7000 >> >> >> >> On 6/25/2010 4:04 PM, N1JM wrote: >> >>> Have you tried to change AF gain in the menu? >>> >>> >> > __ 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] Low headphone audio level
It is already set on HI. 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com, spots at telnet.reversebeacon.net, port 7000 On 6/25/2010 4:04 PM, N1JM wrote: > Have you tried to change AF gain in the menu? > __ 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] UK Elecraft Net
Hi all, After much thought I have decided to suspend the UK Elecraft SSB net until later in the year. Conditions are poor on 80m at this time of year and the weather is too good :) I will shout out later in the year and hope to see plenty of Elecrafters on the net at that time. 73 Ian -- Ian J Maude, G0VGS SysOp GB7MBC & HB9DRV-9 DX Clusters Member RSGB, GQRP 9838, FISTS 14077 | K3 #455 http://www.amateurradiotraining.org __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Low headphone audio level
Have you tried to change AF gain in the menu? -- View this message in context: http://elecraft.365791.n2.nabble.com/Low-headphone-audio-level-tp5223384p5223586.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] Firmware dictates lower power output
You'll probably get a lot of this, but why do you need 120 watts? Anything above 100 watts the transmit IMD starts to degrade. It's bad enough at 100w for 12volt finals. -- View this message in context: http://elecraft.365791.n2.nabble.com/Firmware-dictates-lower-power-output-tp5222514p5223576.html Sent from the [K3] 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] Low headphone audio level
> A tangentially related question - when I plug into the headphone jack, > it appears that I have to push the phone plug into the jack quite firmly > before the speak is cut off. Again, normal? > There is a delay of a second or so between when the headphones are detected and the speaker amplifier cuts off. This delay may cause you to think you need to press more firmly :-) 73, Lyle KK7P __ 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] Low headphone audio level
Peter: I had exactly same problem, finally sole my heil headphones for twenty dollars , bought the ones advertised in QST for forty nine dollars and everything is fineimpedance of heil does not match rig. If you don't change direction you WILL arrive exactly where you're headed!! Susan Meckley, Skipper W7KFI-mm AFA9SM USSV DHARMA --- On Fri, 6/25/10, Pete Smith wrote: > From: Pete Smith > Subject: [Elecraft] Low headphone audio level > To: "Elecraft List" > Date: Friday, June 25, 2010, 8:53 AM > I have just gotten around to trying > headphones with my new K3, and am > surprised by how much audio gain is required for an > adequate listening > level with my old Heil BN-10 (?) headset. I often > find it at 2-3 > o'clock. Is this normal? Output from the > internal speaker seems normal > relative to the gain control - rarely requiring beyond 10 > o'clock. > > A tangentially related question - when I plug into the > headphone jack, > it appears that I have to push the phone plug into the jack > quite firmly > before the speak is cut off. Again, normal? > > -- > 73, Pete N4ZR > > The World Contest Station Database, updated daily at > www.conteststations.com > The Reverse Beacon Network at http://reversebeacon.net, blog at > reversebeacon.blogspot.com, > spots at telnet.reversebeacon.net, port 7000 > > __ > 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] Low headphone audio level
I have just gotten around to trying headphones with my new K3, and am surprised by how much audio gain is required for an adequate listening level with my old Heil BN-10 (?) headset. I often find it at 2-3 o'clock. Is this normal? Output from the internal speaker seems normal relative to the gain control - rarely requiring beyond 10 o'clock. A tangentially related question - when I plug into the headphone jack, it appears that I have to push the phone plug into the jack quite firmly before the speak is cut off. Again, normal? -- 73, Pete N4ZR The World Contest Station Database, updated daily at www.conteststations.com The Reverse Beacon Network at http://reversebeacon.net, blog at reversebeacon.blogspot.com, spots at telnet.reversebeacon.net, port 7000 __ 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) Clock Accuracy
You were probably refering to the" Walthem" brand of railroad watch that your father probably owned in the1940's My father had one which I inherited. It is still here at my home but I haven't looked at it in years. He used it while travelling the CNR and CPR in Canada. 73, Bob VE3XM __ 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] Boonies and the K3 clock
On 06/25/2010 07:31 PM, John wrote: > Gentlemen, > I'm amazed at the creastivity I stirred up with my observation that the K3 > clock is inaccurte. The subject appears to have a life of its own. My > original observation related to being in the boonies (outside Kabul, > Afghanistan), on a truck battery where neither JJY nor any of the U.S. > based time signals can be received. There's RWM in Moscow, which I've frequency calibrated my K3 against, on 4996, 9996 and 14996 kHz, and RTZ in Irkutsk, on 50 kHz Jon LA4RT __ 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] Clock Accuracy (the moral of the story)
I haven't read all the responses to this thread but maybe it could be turned off by a menu item, in case someone didn't want it take up cpu cycles. -- View this message in context: http://elecraft.365791.n2.nabble.com/Clock-Accuracy-tp5218803p5223247.html Sent from the [K3] 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] Clock Accuracy (the moral of the story)
"...unwilling to pay even $1 for an accurate clock in the K3" I bought a Citizen ECO drive watch a few months ago. I liked it because it was solar powered and had a clean face. About once a month I might check it with my internet-updated laptop computer clock. I paid about $175 at Costco for this watch. But, the mere idea of spending extra for a clock on a radio is silly unless that is a clock for my old Hammarlund HQ-170A. My original HQ-170AC had a clock but I got rid of that in 1967. The one I picked up at a ham fest a few years go did not have a clock -- just an empty but covered spot on the front panel that begs the need for a clock face. I still have this background activity of hunting down a clock for my HQ-170A. Do I need it. No. In fact, the HQ-170A is in my storage garage so it might be considered really lame to spend money on a clock for a radio in storage. A K3 is not like that. I don't even do the menu selection to display the clock on my K3. If I need to know the time, I have at least three clocks in the room: an analog wall clock, the time on my laptop, and the time on my wrist watch. There is no big empty spot on the front panel of a K3 where a clock is supposed to go. There must have been a time in the past where a clock on a radio was important. Maybe. That time is certainly not today. Therefore, Tom, as usual, has the right answer --- unwilling to pay even a $1 for [any kind of clock] in the K3. 73, phil, K7PEH P.S. If anyone has a clock for an HQ-170A that they would like to sell, let me know. I might go as high as $25 for such a clock. After all, I will be spending about $25 on a bottle of wine to take over to friend's house for dinner tonight. Certainly, a clock is worth the same. The wine: Earthquake Zinfandel. On Jun 25, 2010, at 4:13 AM, Tom W8JI wrote: > > > Myself, I would be unwilling to pay even $1 > more to have an accurate clock in the K3. > > 73 Tom > > __ > 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] Clock Accuracy and Outlook 2010 conversation deletion
Wayne is correct. It's "time" for a change. Terry, W0FM -Original Message- From: Wayne Burdick [mailto:n...@elecraft.com] Sent: Friday, June 25, 2010 10:39 AM To: Elecraft Reflector Subject: Re: [Elecraft] Clock Accuracy and Outlook 2010 conversation deletion Maybe we've had enough postings about the clock :) Thanks, 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] Boonies and the K3 clock
Gentlemen, I'm amazed at the creastivity I stirred up with my observation that the K3 clock is inaccurte. The subject appears to have a life of its own. My original observation related to being in the boonies (outside Kabul, Afghanistan), on a truck battery where neither JJY nor any of the U.S. based time signals can be received. The clock in my K3 runs about 5 minutes fast a day (not the remarkable 2 seconds one of the commentators announced). Yes, you can resent the internal clock using the menus provided, it is only a button or two away. As a reference I wear an Omega Seamaster GMT which I 'calibrated' from titme to time off an Iranian television station. In any event, I'm find the sheer number of response telling, given it is obvious that the bulk of the respondents had not read my original message. Thank you, John Kountz, KE6GFF/T6EE __ 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--Lost port, K3 # 282
Hi All, I have a problem with my K3/100 #282. Background:I use Mixw for cw/digimodes.Last week I lost com port,could get it back only by reseating the usb connector on the laptop.Had to do this every operating session.Did'nt matter if I switched on the laptop first or K3. On 22/06 night I switched off after operating as usual.Switched on 23/06 morning. The K3 came on in transmit mode.Switched off power waited for some time,switched on,again came on in Xmit mode.Switched off again,removed rs232 connection, switched on to find same status.Did a forced start with ON button for 10sec's.VFO A shows frequency.. 1.On to K3 utility.Comm.established with K3. "K3 boot loader is ready for MCU firmware load"shown. 2.F/W available shown latest regular release,installed is blank. 3.Tried loading,MCU firmware load fails on address x800. 4.Tried steps 1 to 3 on pc with real serial port with appropriate port change.Observation same as above. Going through Elecraft reflector,there is a reference made to U1 snag.This ic is located on the board which accepts on-board speaker connection.Looking at the ic,changing this alone is beyond my capability. 23/06 evening.With K3 connected to real serial port on pc.K3 utility is on and the polling process is not showing any signs of stopping,keeps on toggling through all the speeds. Have written to support at Elecraft. lMaybe they are all busy in DL. 73 de Nandu. VU2NKS __ 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] Clock Accuracy
Remember what the old wise man said, " Man with a watch, knows what time it is, man with two watches is never sure." Mel 'Nuf said --- On Fri, 6/25/10, Rick Dettinger wrote: From: Rick Dettinger Subject: Re: [Elecraft] Clock Accuracy To: "David Ferrington, M0XDF" Cc: "Elecraft Email" Date: Friday, June 25, 2010, 9:10 AM Yes, but their radios were just boat anchors. 73, Rick Dettinger K7MW On Jun 25, 2010, at 12:47 AM, David Ferrington, M0XDF wrote: > Not that I'm complaining about the clock or criticising those that > want more accuracy, but there was a time, a long time ago, when > people didn't have clocks or watches, and even when they got clocks, > they were very inaccurate - the first clocks didn't have minute hands! > > I kinda think they were probably less hurried, more relaxed days. > 73 de M0XDF, K3 #174 __ 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] Clock Accuracy
Yes, but their radios were just boat anchors. 73, Rick Dettinger K7MW On Jun 25, 2010, at 12:47 AM, David Ferrington, M0XDF wrote: > Not that I'm complaining about the clock or criticising those that > want more accuracy, but there was a time, a long time ago, when > people didn't have clocks or watches, and even when they got clocks, > they were very inaccurate - the first clocks didn't have minute hands! > > I kinda think they were probably less hurried, more relaxed days. > 73 de M0XDF, K3 #174 __ 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] OT: Convenient time source
Last I knew ... from the creator of LOTW ... the "time match" window for QSO's was +/- 30 minutes. Probably the most accurate time conveniently available to most of us is a cell phone. 73! Ken Kopp - K0PP elecraftcov...@rfwave.net __ 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 PR6 preamp
On Thu, 24 Jun 2010 23:15:52 -0800, Edward R Cole wrote: >Then you state that you are not suggesting the ARR is better. Not >better than what? The Elecraft 6M preamp 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
Re: [Elecraft] Clock Accuracy and Outlook 2010 conversation deletion
Maybe we've had enough postings about the clock :) Thanks, 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] Clock Accuracy and Outlook 2010 conversation deletion
Unbelievable... 73 Jeff kb2m -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jim McDonald Sent: Friday, June 25, 2010 9:39 AM To: 'Elecraft' Subject: Re: [Elecraft] Clock Accuracy and Outlook 2010 conversation deletion You can do the same with Outlook 2007, which I use, and maybe even Outlook 2003. Back to clocks(!), I've used computer logging since the DOS DXbase in the early 1990s and now DXLab and have an "Atomic Clock" synced to WWVB on the wall. My computer syncs with NIST every week or more often if I want to do it manually. For me the K3 clock is nice but I forget it's there. Jim N7US -Original Message- In case anyone is interested. I loaded Outlook 2010. What a wonderful piece of software. I sort by conversations. I went from multiple messages under the Clock topic to just a couple conversations and was able to two-click them away to the deleted folder. Bill K9YEQ __ 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] KXAT1 Operation
I thought I'd mention what concluded my quest for an operational KXAT1. Threads that end before a conclusion are annoying and if you post first, you should post last. As it turned out I was left to my own devices, which were few. I went to the shotgun approach and ordered new diodes, ICs for the tuner and radio, and on a hunch new FWD and REV pots. (Note: I did suspect the pots in that they were not original as I had melted a corner of one and damaged it cosmetically. Locally sourced, they were rated equally and I confirmed with the tech support at Elecraft that this was acceptable.) Ordering individual parts from Elecraft as opposed to just stating over with a new kit was expensive, but I wasn't going to give up on the tuner; there had to be a fix. Well, the new pots did the trick and the tuner works as designed; null set was textbook and the power reading spot on. Lesson learned is that there are apparently very high standards in the components that Elecraft amasses for these kits and finding something off the shelf that is superior, or will even work as well, may be unlikely. Two weeks of pulling my hair out, a pound of solder redoing things over and over, $90 in parts (though all I needed was $3.00 really) and I'm on the air with a tuned dipole. Satisfaction in fixing it myself: Priceless! Happy ending. 73's Bill Schindele KJ6BVV CONFIDENTIAL: This electronic mail (including any attachments) may contain information that is privileged, confidential, and/or otherwise protected from disclosure to anyone other than its intended recipient(s). Any dissemination or use of this electronic email or its contents (including any attachments) by persons other than the intended recipient(s) is strictly prohibited. If you have received this message in error, please notify us immediately by reply email so that we may correct our internal records. Please then delete the original message (including any attachments) in its entirety. Thank you. __ 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] Clock Accuracy and Outlook 2010 conversation deletion
You can do the same with Outlook 2007, which I use, and maybe even Outlook 2003. Back to clocks(!), I've used computer logging since the DOS DXbase in the early 1990s and now DXLab and have an "Atomic Clock" synced to WWVB on the wall. My computer syncs with NIST every week or more often if I want to do it manually. For me the K3 clock is nice but I forget it's there. Jim N7US -Original Message- In case anyone is interested. I loaded Outlook 2010. What a wonderful piece of software. I sort by conversations. I went from multiple messages under the Clock topic to just a couple conversations and was able to two-click them away to the deleted folder. Bill K9YEQ __ 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] Clock Accuracy and Outlook 2010 conversation deletion
My K3 clock jis pretty darn accurate. It just told me it's 11PM and time for bed. Now that's practical. night All (Grin) Gary On Fri, Jun 25, 2010 at 10:25 PM, Bill K9YEQ wrote: > In case anyone is interested. I loaded Outlook 2010. What a wonderful > piece of software. I sort by conversations. I went from multiple messages > under the Clock topic to just a couple conversations and was able to > two-click them away to the deleted folder. > > Bill > K9YEQ > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike > Sent: Friday, June 25, 2010 6:46 AM > To: d...@w3fpr.com > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] Clock Accuracy > > Agreed about the clock. It's hard to imagine any logging software that > can't > do a time sync with a NIST server, unless you're in the boonies. > My wristwatch claims to sync with WWV nightly. > I'm not sure what leeway LoTW (or some contests) allows for matching but it > might be as tight as 30 seconds. > > 73, Mike NF4L > > Don Wilhelm wrote: > > But those modes are computer generated, and the computer clock can be > > easily sync'ed with a NIST standard. I don't know why anyone would > > want to use a free-running clock for anything that requires that > > degree of accuracy. > > > > The RTC in the K2 or the K3 is intended only for a logging convenience > > when no other timepiece is available. I cannot believe it was ever > > intended to be a precision clock standard. If you err in your log > > entry by 30 seconds, does anyone care? > > > > 73, > > Don W3FPR > > > > Dave wrote: > > > >> Some digital (HF) modes require transmissions timed to start within 1 > >> second accuracy. I learnt a long time ago not to use the internal K3 > >> clock for that purpose. > >> > >> 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 > > > > > > > __ > 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 > -- Gary VK4FD - Motorhome Mobile http://www.qsl.net/vk4fd/ K3 #679 For everything else there's Mastercard!!! __ 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] Clock Accuracy and Outlook 2010 conversation deletion
In case anyone is interested. I loaded Outlook 2010. What a wonderful piece of software. I sort by conversations. I went from multiple messages under the Clock topic to just a couple conversations and was able to two-click them away to the deleted folder. Bill K9YEQ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike Sent: Friday, June 25, 2010 6:46 AM To: d...@w3fpr.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Clock Accuracy Agreed about the clock. It's hard to imagine any logging software that can't do a time sync with a NIST server, unless you're in the boonies. My wristwatch claims to sync with WWV nightly. I'm not sure what leeway LoTW (or some contests) allows for matching but it might be as tight as 30 seconds. 73, Mike NF4L Don Wilhelm wrote: > But those modes are computer generated, and the computer clock can be > easily sync'ed with a NIST standard. I don't know why anyone would > want to use a free-running clock for anything that requires that > degree of accuracy. > > The RTC in the K2 or the K3 is intended only for a logging convenience > when no other timepiece is available. I cannot believe it was ever > intended to be a precision clock standard. If you err in your log > entry by 30 seconds, does anyone care? > > 73, > Don W3FPR > > Dave wrote: > >> Some digital (HF) modes require transmissions timed to start within 1 >> second accuracy. I learnt a long time ago not to use the internal K3 >> clock for that purpose. >> >> 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 > > __ 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] Clock Accuracy
Mike wrote: > Agreed about the clock. It's hard to imagine any logging software that > can't do a time sync with a NIST server, unless you're in the boonies. > My wristwatch claims to sync with WWV nightly. > I'm not sure what leeway LoTW (or some contests) allows for matching but > it might be as tight as 30 seconds. > > 73, Mike NF4L > > Try 30 minutes for LOTW. If you are within 30 mins the QSO is ok. https://p1k.arrl.org/lotw/faq 73 Merv KH7C / K9FD __ 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] Clock Accuracy
I'm taking my K3 to field day in the morning. Tonight I will run the utility and sync the time. It will be a clock in a convenient place for FD, that can't get knocked off the card table 10 times. Doing just what it was intended to do. It will be just fine. On the wall here at home I have a clock with big numbers that automatically syncs itself to the 60 kHz WWV signal. I PAID for that on purpose. I expect that one to stay within the second. I paid for something to stay within the second. Not interested in paying for that in a K3. Anyone who wants to come up with an accuracy mod, go right ahead. Your time. Your expense. Then you can see how many are interested. I continue to vote for Wayne keeping a very practical bent in his business. Upgrades need to have broad appeal within our tiny, tiny ham radio niche. More money spent than money taken in means no Elecraft. Then you get to have the responsiveness of Yakencom, permanently. Get Yakencom to fix something or have any vision. They're telling you with their past performance how much money is in ham radio, what the limits of profitability are. They DO know how much money they are making. Figuring them out is what helps one to know how exceptional Elecraft is, and what we have to lose. 73, Guy. On Fri, Jun 25, 2010 at 5:02 AM, David Ferrington, M0XDF wrote: > No need to apologise and I'm sorry, I guessed you were questioning me since > it was my post attached. > I took no offence and intended none. My post wasn't supposed to be a > criticism of your post, of my post etc. > Lets all lighten up here folks, time is to short (sorry, couldn't resist it > :-) > > There are those that care about the accuracy of the K3 clock and those that > don't. Either way, their opinion should be respected and insight gleamed in > what ever way one can from their posts. > I for one enjoy reading the odd thread that goes on a bit, a light relief > from some of the heavier topics. > > 73 de M0XDF, K3 #174 > > -- > Those who walk bravely through life, unafraid of loss or failure, > find that they very rarely lose or fail. > > > > On 25 Jun 2010, at 09:32, Alexey Kats wrote: > >> Ouch! My apologies, I was responding to the whole trend of negative >> feelings toward K3 (and K2) clock counter. I did not mean to make it >> sound like I was responding to your complaints (I don't even recall if >> you DID complain about anything). >> >> On Fri, Jun 25, 2010 at 1:27 AM, David Ferrington, M0XDF >> wrote: >>> You miss something :-) >>> >>> I'm not complaining about my clock, I think it is just fine, I only use it >>> in the field and like Don, I sync it before I go out - either via the >>> utility or via some other timepiece. >>> 73 de M0XDF, K3 #174 >>> -- >>> In our day and age it seems that Common Sense is in short supply. If you >>> don't have any Common Sense - get some Common Sense and use it. If you >>> can't find any Common Sense, ask for help from somebody who has some Common >>> Sense. Is Common Sense divine? >> >> >> >> -- >> Alexey Kats (neko) > > __ > 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] Clock Accuracy
Agreed about the clock. It's hard to imagine any logging software that can't do a time sync with a NIST server, unless you're in the boonies. My wristwatch claims to sync with WWV nightly. I'm not sure what leeway LoTW (or some contests) allows for matching but it might be as tight as 30 seconds. 73, Mike NF4L Don Wilhelm wrote: > But those modes are computer generated, and the computer clock can be > easily sync'ed with a NIST standard. I don't know why anyone would want > to use a free-running clock for anything that requires that degree of > accuracy. > > The RTC in the K2 or the K3 is intended only for a logging convenience > when no other timepiece is available. I cannot believe it was ever > intended to be a precision clock standard. If you err in your log entry > by 30 seconds, does anyone care? > > 73, > Don W3FPR > > Dave wrote: > >> Some digital (HF) modes require transmissions timed to start within 1 second >> accuracy. I learnt a long time ago not to use the internal K3 clock for that >> purpose. >> >> 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 > > __ 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] Clock Accuracy (the moral of the story)
Almost 30 years ago, when I designed the AL1200 amplifier, it included a rough relative voltmeter like most other amps had except I included a cheap peak voltage detector. I thought I'd calibrate the cheap relative voltmeter scale, making the scale show peak watts instead of zero through ten like most other meters. I warned it was only accurate into 50 ohm loads, and was a relative meter that read PEP. It cost the customer nothing, and I thought it was better to have something that read power with pretty fair accuracy if the load was close to 50 ohms j0 then to just say 0-10. Over the years we had a flurry compliants like the clock complaints. Never once did I hear "Hey, at least that's better than zero through ten like my XYZ". The lesson I learned was to never give the public some bonus-for-nothing unless the gift is flawless. Myself, I would be unwilling to pay even $1 more to have an accurate clock in the K3. 73 Tom __ 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] Let me build your K2
I have built more than 300 K2's to date. Let me build one for you. My prices are reasonable, and you receive a new radio with the options you want. Please respond off of the reflector. 73 Alan W1HYV _ The New Busy is not the old busy. Search, chat and e-mail from your inbox. http://www.windowslive.com/campaign/thenewbusy?ocid=PID28326::T:WLMTAGL:ON:WL:en-US:WM_HMP:042010_3 __ 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] Clock Accuracy
No need to apologise and I'm sorry, I guessed you were questioning me since it was my post attached. I took no offence and intended none. My post wasn't supposed to be a criticism of your post, of my post etc. Lets all lighten up here folks, time is to short (sorry, couldn't resist it :-) There are those that care about the accuracy of the K3 clock and those that don't. Either way, their opinion should be respected and insight gleamed in what ever way one can from their posts. I for one enjoy reading the odd thread that goes on a bit, a light relief from some of the heavier topics. 73 de M0XDF, K3 #174 -- Those who walk bravely through life, unafraid of loss or failure, find that they very rarely lose or fail. On 25 Jun 2010, at 09:32, Alexey Kats wrote: > Ouch! My apologies, I was responding to the whole trend of negative > feelings toward K3 (and K2) clock counter. I did not mean to make it > sound like I was responding to your complaints (I don't even recall if > you DID complain about anything). > > On Fri, Jun 25, 2010 at 1:27 AM, David Ferrington, M0XDF > wrote: >> You miss something :-) >> >> I'm not complaining about my clock, I think it is just fine, I only use it >> in the field and like Don, I sync it before I go out - either via the >> utility or via some other timepiece. >> 73 de M0XDF, K3 #174 >> -- >> In our day and age it seems that Common Sense is in short supply. If you >> don't have any Common Sense - get some Common Sense and use it. If you >> can't find any Common Sense, ask for help from somebody who has some Common >> Sense. Is Common Sense divine? > > > > -- > Alexey Kats (neko) __ 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] Clock Accuracy
Ouch! My apologies, I was responding to the whole trend of negative feelings toward K3 (and K2) clock counter. I did not mean to make it sound like I was responding to your complaints (I don't even recall if you DID complain about anything). On Fri, Jun 25, 2010 at 1:27 AM, David Ferrington, M0XDF wrote: > You miss something :-) > > I'm not complaining about my clock, I think it is just fine, I only use it in > the field and like Don, I sync it before I go out - either via the utility or > via some other timepiece. > 73 de M0XDF, K3 #174 > -- > In our day and age it seems that Common Sense is in short supply. If you > don't have any Common Sense - get some Common Sense and use it. If you can't > find any Common Sense, ask for help from somebody who has some Common Sense. > Is Common Sense divine? -- Alexey Kats (neko) __ 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] Clock Accuracy
You miss something :-) I'm not complaining about my clock, I think it is just fine, I only use it in the field and like Don, I sync it before I go out - either via the utility or via some other timepiece. 73 de M0XDF, K3 #174 -- In our day and age it seems that Common Sense is in short supply. If you don't have any Common Sense - get some Common Sense and use it. If you can't find any Common Sense, ask for help from somebody who has some Common Sense. Is Common Sense divine? On 25 Jun 2010, at 09:12, Alexey Kats wrote: > I apologize if it is inappropriate, but I am getting REALLY confused. > > 1 minute off in a month. It is 15 seconds off in a week. Let's say it > takes TWO minutes to correct it (maybe an overstatement, but still...) > Now, do you really mind spending extra TWO MINUTES correcting the > embedded clock than spending TWO MINUTES actually talking or listening > to somebody? Or do I miss something in this discussion? __ 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] Clock Accuracy
Thank you, David, you managed to summarize what I was trying to say in one single (although long) sentence. My apologies to the reflector audience, I should have thought about eloquence before I posted my version of the "oh, come on" response. On Fri, Jun 25, 2010 at 12:47 AM, David Ferrington, M0XDF wrote: > Not that I'm complaining about the clock or criticising those that want more > accuracy, but there was a time, a long time ago, when people didn't have > clocks or watches, and even when they got clocks, they were very inaccurate - > the first clocks didn't have minute hands! > > I kinda think they were probably less hurried, more relaxed days. > 73 de M0XDF, K3 #174 > -- > Don't say you don't have enough time. You have exactly the same number of > hours per day that were given to Helen Keller, Pasteur, Michaelangelo, > Mother Teresa, Leonardo da Vinci, Thomas Jefferson, and Albert Einstein. > -H. Jackson Brown, Jr., writer > > > __ > 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 > -- Alexey Kats (neko) __ 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] Clock Accuracy
I apologize if it is inappropriate, but I am getting REALLY confused.
1 minute off in a month. It is 15 seconds off in a week. Let's say it
takes TWO minutes to correct it (maybe an overstatement, but still...)
Now, do you really mind spending extra TWO MINUTES correcting the
embedded clock than spending TWO MINUTES actually talking or listening
to somebody? Or do I miss something in this discussion?
I would GUESS that this is all about wrong expectation - instead of
treating embedded watch as a convenience some people come to
conclusion that since K3 as a TRANSCEIVER is a precision instrument it
must be just as accurate in all its other functions (embedded watch
should be accurate to millisecond, output watt-meter should be
accurate to milliwatt, or power source voltage should be accurate to
millivolt). Well, it is not and it should not. It is merely an
instrument for our hobbies, and it is better to define its quality by
its PRIMARY function than put it down because its secondary function
is not up to par.
Oh, and for the person who said he likes to compare his computer clock
to his K3. I'd suggest revisiting the whole idea of comparing
"untrusted" time source with "independent" time source. What makes you
think that "independent" is any better than "untrusted"? If you have
two watches, one is 30 MINUTES BEHIND correct time and another is 30
MINUTES AHEAD correct time, does it really tell you anything if you
compare those two? (I mean "anything" besides of that you can't trust
either one?) Comparing untrusted watch with the one you TRUST is fine,
but comparing it with the one you KNOW to be not precise but WISHING
to be precise is, pretty much, wishful thinking, at best.
In any case, can we stop trashing K{2|3} clock here? It servers its
purpose, after all. It is not perfect, it is not as stable as primary
frequency, but does it really matter? This is the tranceiver, after
all, not an atomic clock. I am afraid than next thing people will
complain about would be instability caused by side effects of
relativity theory after they travel around the globe several times.
On Fri, Jun 25, 2010 at 12:42 AM, David Ferrington, M0XDF
wrote:
> Over here, I don't think the new rail companies know what a clock or a watch
> is!
>
> I must be lucky, my clock has only lost 5 minutes in 5 months.
>
> 73 de M0XDF, K3 #174
--
Alexey Kats (neko)
__
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Re: [Elecraft] Clock Accuracy
Not that I'm complaining about the clock or criticising those that want more accuracy, but there was a time, a long time ago, when people didn't have clocks or watches, and even when they got clocks, they were very inaccurate - the first clocks didn't have minute hands! I kinda think they were probably less hurried, more relaxed days. 73 de M0XDF, K3 #174 -- Don't say you don't have enough time. You have exactly the same number of hours per day that were given to Helen Keller, Pasteur, Michaelangelo, Mother Teresa, Leonardo da Vinci, Thomas Jefferson, and Albert Einstein. -H. Jackson Brown, Jr., writer __ 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] Clock Accuracy
Over here, I don't think the new rail companies know what a clock or a watch is! I must be lucky, my clock has only lost 5 minutes in 5 months. 73 de M0XDF, K3 #174 -- The lame man who keeps the right road outstrips the runner who takes a wrong one. The more active and swift the latter is, the further he will go astray. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) On 25 Jun 2010, at 02:40, Don Wilhelm wrote: > Interesting that you should mention "railroad accuracy". > My father worked for the P&LE railroad based out of Pittsburgh. PA. > When he hired on, he was required to buy a pocket watch - an approved > type from an approved jewelery store in Pittsburgh, PA, the railroad > provided a "payment plan" Sorry, but I cannot remember the brand nor the > model watch - of course, that was back in the early 1940s - I don't > know what the rules are today. __ 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 PR6 preamp
Jim, Your comment is a little confusing. First you state that you believe the External preamp definitely improves sensitivity (when external noise level is low). I agree. I said the same in my original e-mail. Then you state that you are not suggesting the ARR is better. Not better than what? It is definitely better than the internal preamp, but it is probably close to the same performance as the PR6 (regarding sensitivity). Elecraft claims exceptional dynamic range for the PR6 which the ARR probably does not have (which is important in urban high noise environs or in high density QRM that happen in openings/contests). I did some checking of the K3 specs: Sensitivity with (internal) preamp turned-on is spec at -136 to -138 dBm at 500-Hz bw. -138 dBm is equivalent to noise figure of 9.5 dB. With the PR6, the K3 is spec at -143 to -144 dBm at 500-Hz bw. That is equivalent to a noise figure of 5-dB. Since the PR6 spec is 0.5 DBNF with 18 dBG this implies that the K3 receiver has a NF of 20-dB (all preamps off). The ARR preamp is spec at 0.5 dBNF with 22-dBG so the resulting sensitivity should be -148 dBm. So doing a little more reverse analysis, this implies the internal preamp NF is something like 5-dB if you assume the gain is 10-dB (I could not find what the gain of the internal preamp is). How does this translate for the 6m operator? In high noise environs the internal preamp is probably adequate since external noise predominates. In low noise areas the PR6 or ARR definitely will improve sensitivity by 7 to 10 dB. If you are considering doing eme or meteor scatter on 6m the low-noise external preamp is going to help quite a bit. Antennas elevated above the horizon do not see the thermal noise of the ground or as much man-made noise. Sky noise at 6m is still quite high compared to higher VHF and UHF frequencies so placing the preamp at the K3 is acceptable if your coax is not lossy. Remember my statement that I though running both internal and external preamps might not result in better sensitivity? I took the numbers I developed for both the PR6 and internal preamp and input to my spreadsheet. The result is total sensitivity of -152 dBm. So maybe running both internal and external preamps is better. (As jim point out) you have to evaluate this in real conditions as results will differ depending on your local noise environment. One caveat is turning on both preamps may lead to overdriving the receiver resulting in reduced dynamic range or even distortion. 73, Ed - KL7UW Final note: SSB sensitivity numbers at bw of 2.8 KHz are 7.5 dB lower than at bw of 500-Hz. -- Message: 31 Date: Thu, 24 Jun 2010 13:15:30 -0700 From: "Jim Brown" Subject: Re: [Elecraft] K3 PR6 preamp To: "elecraft@mailman.qth.net" Message-ID: <20100624201535.eeeca58...@gw1.nlenet.net> Content-Type: text/plain; charset="us-ascii" On Thu, 24 Jun 2010 11:52:46 -0800, Edward R Cole wrote: >Running both preamps probably only raises the noise level and >does not improve receiver sensitivity in any significant >manner. I suggest that you defer judgment on this until you're trying to copy very weak signals during a band opening. The additional preamp at the patch point (in my case an ARR) definitely DOES improve RX sensitivity at times when the external noise level is low. I'm not suggesting that the ARR is better -- indeed, I doubt that it is. But it was bought and paid for when the K3 showed up, and it works fine. :) 73, Jim K9YC 73, Ed - KL7UW, WD2XSH/45 == BP40IQ 500 KHz - 10-GHz www.kl7uw.com EME: 144-600w, 432-100w, 1296-60w, 3400-fall 2010 DUBUS Magazine USA Rep dubus...@hotmail.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] Diversity receive and isolating antennas
Used my LP-100A to check the isolation between my main antennas and pennant receive loops, worked out great. Stewart G3RXQ On Thu, 24 Jun 2010 11:27:52 -0700, Brett Howard wrote: > This just gave me a great idea... If any of you have a LP-100A you > can connect an antenna directly into the back of the unit (where the > couplers normally connect) and the unit can then be used as a field > strength meter and it will give values in dBm... Thats totally how > I'm going to determine if my separation is going to be good enough... > > My hope is to be able to have 3 antennas on the K3 two which are TX/RX > and one RX only... The RX only antenna I'm going to run through an > ICE 196 RF Limiter > (http://www.iceradioproducts.com/reconly.html#rflimiter). It starts > limiting things to .3VRms so that should keep things happy... > > ~Brett (N7MG) > > On Thu, Jun 24, 2010 at 11:14 AM, Wayne Burdick wrote: >> Hi George, >> >> If you have an RF voltmeter or milliwatt meter, try terminating the >> proposed RX antenna in a dummy load, then measure the voltage or power >> when you transmit. If it's less than about 2.23 Vrms (100 mW, or +20 >> dBm), you'll have no trouble at all. >> >> The subreceiver (as well as the RX ANT IN jack) can generally handle >> far more than this without damage; I pumped several watts in during >> early testing. But you don't want to take risks in the field, or have >> the COR (carrier operated relay) switching in and out during keying in >> CW mode. Antennas can change pattern due to wind, rotation, etc. >> >> If the power at the AUX RX input (sub receiver) looks like it may be >> excessive, you can take additional precautions. You could move the RX >> antenna farther away, put it in a null of the TX antenna, reduce its >> gain (length), or use the KEY OUT line to drive an external shunt PIN >> diode switch. >> >> 73, >> Wayne >> N6KR >> >> >> On Jun 24, 2010, at 10:04 AM, George A. Thornton wrote: >> >>> I am planning to use my dual receive K3 for field day and we want to >>> try >>> out diversity receive. >>> >>> >>> This particular setup will be for 20 meters only. The primary antenna >>> will be a 20 meter monoband Yagi mounted on a 40-60 ft. tower. >>> >>> >>> We were considering using a Buddipole mounted in vertical position and >>> tuned for 20 meters voice to serve as a Rx only antenna for the sub. >>> All transmission will be from the Yagi. I was planning to hook the >>> Buddipole into a Rx only connector. >>> >>> >>> We will do the best we can to isolate the two antennas but having not >>> been to the site before I am not sure what will be possible in the way >>> of geographic isolation. >>> >>> >>> I want to make sure I won't do any damage to the K3 in case the >>> isolation is not sufficient. >>> >>> >>> Anyone familiar with this situation able to give me some guidance? >>> >>> __ >>> 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
