Re: [Elecraft] K3 Audio Volume
Just a thought, but maybe it is a bad relais in the ATU? I had once problems with higher SWR at 10m although the antenna was ok. Cycling the ATU on/off cured this problem. 73 de Roland, DC1RS rfenabled wrote: > > Hi > > Again today I had soft audio when I turned the K3 on. > > I pressed the ATU button and the volume became loud and has remained at > that level. > > Here are the settings. > > 7.102.00 LSB > Width. 2.50 > FC 0.50 > Hi. 1.75 > LO. 0.00 > Filter 2.1 8 pole > (Others installed are also 8 pole 13,6,2.8 and 400) > Antenna is 80M full wave loop and has a 1.2:1 dip on this frequency) > AF knob was at quarter PAST the hour as the audio is generally very low > and has been for a long time. > > After the change in volume it sounds great at the 11 o'clock position. > > FW ver 3.41 > > Hope this helps someone figure out what may be causing this up/down audio > change. > > K3/100 #679 > > 73's > Gary > VK4WT/P > Sent via BlackBerry® from Telstra > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > - K3/100 #1243, KFL3A-2.8K, KFL3A-2.1K, KFL3A-400, KRX3, KFL3A-2.8K, KFL3A-400, KAT3, KXV3A -- View this message in context: http://n2.nabble.com/K3-Audio-Volume-tp3870485p3870564.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] K3 Audio Volume
Hi Again today I had soft audio when I turned the K3 on. I pressed the ATU button and the volume became loud and has remained at that level. Here are the settings. 7.102.00 LSB Width. 2.50 FC 0.50 Hi. 1.75 LO. 0.00 Filter 2.1 8 pole (Others installed are also 8 pole 13,6,2.8 and 400) Antenna is 80M full wave loop and has a 1.2:1 dip on this frequency) AF knob was at quarter PAST the hour as the audio is generally very low and has been for a long time. After the change in volume it sounds great at the 11 o'clock position. FW ver 3.41 Hope this helps someone figure out what may be causing this up/down audio change. K3/100 #679 73's Gary VK4WT/P Sent via BlackBerry® from Telstra __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 - Four Radio Amateurs Killed in Plane Crash
http://www.arrl.org/news/stories/2009/10/21/11157/?nc=1 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] ARRL K3/100 up for auction
Item 08023 - starting bid $2500 - Goes on auction at 10AM ET Thursday 10/22/09. Just a few hours away. http://arrl.auctionanything.com/AuctionHelp.taf?S=n&keyword=&return=50&R=&C=&sort=1&DA=&st=1&Category_ID=&Donor_ID=&su=&status=&skipkw=1&_start=101&days=10&PD=&CD=&hr=&bo=&lo=&hi=&loc=&at=&P=&Ltype=&event_id= 73 es good luck, Al WA6VNN __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 and the IC-2KL/AT-500
Hi all, Hopefully, I will soon purchase an IC-2KL/AT-500 combo for use with the K3. I understand that to automatically band-switch I need an interface that emulates the CI-V. It would appear that most modern band-decoders don't provide the analogue voltages required and there is W9XT's "BCD-10" but it requires a parallel port to drive it... I use a laptop so that is an issue! If anyone is aware of an interface device (apparently someone has homebrewed one) I would appreciate knowing the details. Maybe the Elecraft KRC2 is the answer??? I ma not that concerned about the negative ALC mod at this stage. Cheers, Paul -- ZL4PW ZM4M www.radiodx.com www.zl4pw.orcon.net.nz __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] W2 Resolution
The LP100A claims typical 3% absolute w/ NIST calibration (and Larry does that for you for free when you're done building the kit). I really dig that you get to build the kit including the coupler. I also like that you can use it as a field strength meter. Not to mention that in field strength meter mode it goes to MUCH higher than just HF frequencies. I've used it to take antenna patterns for YAGI's at VHF frequencies. It also can give you a lot of the similar information that people buy the MFJ analyzers for too. I also like being able to get the information in several formats. You can get FWD power and REV power, or you can get FWD power and SWR, or FWD power and return loss in dB (my personal favorite). Anyway I'm pretty pleased with mine and find it to be VERY accurate and I compared it to an actual Agilent lab watt meter from work. ~BTH On Wed, Oct 21, 2009 at 7:58 PM, Grant Youngman wrote: > The LP-100A (I have one) is spec'd at "5% or better", without saying what > "or better" means, and < 2% relative, which isn't a spec Elecraft provides > for the W2, but which one could reasonably assume is in the same range. > > I don't see any practical difference. True, the LP-100 is a also a good > meter, and will give you a couple of digits of precision to the right of the > decimal in the display in low power ranges, but given the absolute accuracy, > they aren't exactly meaningful. > > Truth is, I wish I had never sold my Nye-Viking 3KW, old fashioned, analog > metered, no PC interface, 'eyeball the power' power meter, thinking the new > fangled thingy would somehow be better. The Nye did everything one needs > unless you're running a lab instead of a ham radio station. But no, I drank > the Coolaid :-) > > Grant/NQ5T > > >> -Original Message- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brett Howard >> Sent: Wednesday, October 21, 2009 8:42 PM >> Cc: Elecraft List >> Subject: Re: [Elecraft] W2 Resolution >> >> Yes and this is where the LP100A shines. >> >> ~BTH >> >> On Wed, 2009-10-21 at 13:41 -0500, Grant Youngman wrote: >> > You won't get higher accuracy by using the PC interface -- only >> > higher >> > precision. It's also kind of important to note that the >> spec is +/- >> > 0.5dB. Doesn't say if that's of indicated power or of scale >> > maximum. > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: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 KAT3 Antenna Tuner Tutorial
Here's another question: I have a dipole with 200 feet of window-line feed. It works great with the ATU. When it's wet, I have to re-tune, then it's fine again. I've tuned it at lots of spots in some favorite bands during dry weather (most of the time in New Mexico). But on a rainy day, I end up retuning frequencies here and there. Next sunny day, does the system detune me when I run into a previously "wet-tuned" segment? Oddly, I haven't observed this, but I don't understand why. Windy KM5Q __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] W2 Resolution
The LP-100A (I have one) is spec'd at "5% or better", without saying what "or better" means, and < 2% relative, which isn't a spec Elecraft provides for the W2, but which one could reasonably assume is in the same range. I don't see any practical difference. True, the LP-100 is a also a good meter, and will give you a couple of digits of precision to the right of the decimal in the display in low power ranges, but given the absolute accuracy, they aren't exactly meaningful. Truth is, I wish I had never sold my Nye-Viking 3KW, old fashioned, analog metered, no PC interface, 'eyeball the power' power meter, thinking the new fangled thingy would somehow be better. The Nye did everything one needs unless you're running a lab instead of a ham radio station. But no, I drank the Coolaid :-) Grant/NQ5T > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Brett Howard > Sent: Wednesday, October 21, 2009 8:42 PM > Cc: Elecraft List > Subject: Re: [Elecraft] W2 Resolution > > Yes and this is where the LP100A shines. > > ~BTH > > On Wed, 2009-10-21 at 13:41 -0500, Grant Youngman wrote: > > You won't get higher accuracy by using the PC interface -- only > > higher > > precision. It's also kind of important to note that the > spec is +/- > > 0.5dB. Doesn't say if that's of indicated power or of scale > > maximum. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K4QO and 3 others silent key
4th was , W3PP , Dallas Carter of Laurie, Delaware. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KE8UW Re: Just finished K2 and finals look to be oscillating at 450KHz...
Chuck, Spectrogram version 5.17 is freeware and matches the screenshots for setup. See the information (and download) at Tom Hammond's website www.n0ss.net. If you want extended information about K2 dial calibration and filter setup, take a look at my website article on K2 Dial Calibration - www.w3fpr.com 73, Don W3FPR C. J. Hawley wrote: > Thanks so much for the help. The problem was C120...the one in the middle > between two close in caps. Hard to see the value. Had to get serious and bend > one over. Figures it would be that one. I had the value .001uF instead of > .01uF. > You were so correct. Made me look closer. > Thanks for your patience, ability, and experience. > The alignment seems to be going well so far. Perfect tuning wand for those > inductors. All done on that and buttoned up. All works and works well. I need > to do the filters now...maybe Spectrogram. I'm a little confused if it is > free or what, but I'll figure it out. > I have made use of the latest manual on line for some of the later > clarifications and info. Thanks for having these on line. > And thanks Don and Michael for your suggestions along these same lines. > Chuck, KE9UW > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KE8UW Re: Just finished K2 and finals look to be oscillating at 450KHz...
Thanks so much for the help. The problem was C120...the one in the middle between two close in caps. Hard to see the value. Had to get serious and bend one over. Figures it would be that one. I had the value .001uF instead of .01uF. You were so correct. Made me look closer. Thanks for your patience, ability, and experience. The alignment seems to be going well so far. Perfect tuning wand for those inductors. All done on that and buttoned up. All works and works well. I need to do the filters now...maybe Spectrogram. I'm a little confused if it is free or what, but I'll figure it out. I have made use of the latest manual on line for some of the later clarifications and info. Thanks for having these on line. And thanks Don and Michael for your suggestions along these same lines. Chuck, KE9UW Original message >Date: Wed, 21 Oct 2009 11:39:06 -0700 >From: Gary Surrency >Subject: KE8UW Re: Just finished K2 and finals look to be oscillating at >450KHz... >To: c-haw...@illinois.edu > > If a close inspection does not find it, a scope or > an RF probe can be a big help too. > > There should be just a little RF leakage at the > junction of D3, D4 when in transmit, but next to > nothing at the anode of D3 or D5. D5 and C110 shunt > any T-R switch leakage to ground through C108. See > the schematic. If there is RF present at these > points, it usually means the T-R switch has poor > isolation. > > Sometimes it helps for troubleshooting to remove T3 > so the PA transistors do not have 12V to operate and > become damaged. Place a 10 ohm resistor across the > base lead of Q7, Q8 to provide a load for Q6 and T2. > Now you can leave off the bottom cover for easier > troubleshooting if the removal of the DC supply to > PA transistors did not stop the oscillations. > > But in almost all cases I have repaired, there is an > incorrect part or bad connection in the Q5-Q8 area > if the PAs are oscillating and it is not being > caused by poor T-R switch isolation (removal of > jumper W1 will show if the RF feedback is from the > output of the PAs to the input of Q5. > > An open RFC can be the problem too, if the DC bias > is not getting to some of the T-R switch parts. > > D1, D5 are biased ON in TX, where D2-D4 and Q2 are > biased ON in RX. > > Some builders have left out the two sets of ferrite > beads at Z1, Z2 on either side of T3. Be sure they > are there, and it is OK for them to touch the pins > of the PA transistors since they are non-conductive. > > Some folks wind T4 correctly but then install it in > reverse. It has to be installed with the green wires > closer to T3, and the two bare wire links go > straight thru each hole of the core, and are not > wound around to the other hole (just a link from > 5-6, and 7-8 on the PCB.) > > I've also see many rigs with Q2 reversed which will > definitely cause self oscillation of the > transmitter. Its wider side should align with the > flat on the PCB. > > Either of the caps across the secondary of T1 or T2 > will cause oscillation if they are damaged, > incorrect values, or missing.RFC6 is critical for > stability too, and must not be open nor missing the > correct parts at C120 or R48. > > All caps around Q5, Q6 are critical as to value, > esp. C115, C119. Be sure you did not use a .001 for > a .01 or 0.1 for example. > > Also check the DC bias on Q6 as I mentioned, and if > it is more than 1.0 to 1.1VDC, replace R46 with a > 390 ohm resistor. The 2SC5739 we now use for Q6 > often needs a lower bias. > > Again, look very very closely at the PCB, parts, and > soldering and you might find the problem just with > your eyes. > > -- > 73, Gary AB7MY > = > supp...@elecraft.com > Elecraft Technical Support > > > C. J. Hawley wrote: > > Thanks again for the help. I checked all the 4007's with a Simpson 360 just > to make sure the cathodes were where they belonged. I can still see the > outline on the board as well. I will check them visually again. > Not discouraged...as an EE I designed and debugged electronics for chemistry > research for 35 years at the U of IL. So I have had my share of late Friday > nights trying to get something running before the chemist's sample died over > the weekend. > Thanks again again. I'll follow these ideas and I have been avoiding > disassembling anything to diagnose (lazy). But that will just have to be part > of the fun. > I'll let you know what I find...embarassed or not...heh. > > Chuck, KE9UW > > Original message > > > Date: Wed, 21 Oct 2009 08:50:07 -0700 > From: Gary Surrency > Subject: Re: KE8UW Re: Just finished K2 and finals look to be oscillating at > 450KHz... > To: c-haw...@illinois.edu > > Are you sure there are no reversed 1N4007 diodes in > the T-R switch? > > Try clipping jumper wire W1 behind T4. If there is > any feedback path from the output of the PA st
Re: [Elecraft] W2 Resolution
Yes and this is where the LP100A shines. ~BTH On Wed, 2009-10-21 at 13:41 -0500, Grant Youngman wrote: > You won't get higher accuracy by using the PC interface -- only > higher > precision. It's also kind of important to note that the spec is +/- > 0.5dB. Doesn't say if that's of indicated power or of scale > maximum. > Nonetheless, you can get all the digits of precision through a PC > readout you want, you still are only going to be +/- 100 watts > accurate or so in the middle of the 2K range. This is consistent > with > the accuracy of other similar good quality RF Power meters. > > It wouldn't seem to matter all that terribly much that the LEDs only > give you 20 intervals, or that you could possibly get readings to > the > watt on the 2KW (or even the 200W) range. Once you throw in > measurement error, you still only know your output power within some > range of a few percent. > > Grant/NQ5T __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 KAT3 Antenna Tuner Tutorial
A really great feature of K3EZ is that it auto tunes the rig at all of the preset bins across all bands that you wish. This is something that would be slick if it were built into the calibration section of the elecraft K3 app but otherwise the K3EZ app does a good job of this. ~Brett On Wed, 2009-10-21 at 16:08 -0700, Wayne Burdick wrote: > Hi Don, > > The manual is a bit sparse in this area -- I'll improve it next time. > > > The user manual says that there are up to 30 ATU settings stored for > > each antenna on each band by the antenna tuner. > > Yes. 10 kHz per segment on 160 m, 20 kHz per segment on 80-12 m, 100 > kHz on 10 m, and 200 kHz on 6 m. > > > There is no further discussion as to when a setting is saved or how > > a setting is chosen from those saved. > > When you hit ATU TUNE, the ATU checks the SWR and goes through the > matching process if necessary. If so, new LC settings is saved for the > present band segment. > > > Is the frequency tracked as the VFO changes and a new setting put > > into the antenna tuner when the VFO has been changed enough? Does a > > setting get changed if the VFO has changed > > enough and the K3 instructed to transmit? > > LC network changes do not occur in receive mode, as we found that very > distracting. Instead they occur on band change or antenna change, or > (if necessary) when you transmit. > > If you have moved the VFO from one segment to another since the last > transmission, and the best available LC settings have also changed, > the ATU will automatically load the new settings when you transmit. > The "ATU" icon flashes briefly to let you know this has occurred. > > "Best available" is determined by comparing the present VFO location > to segments for which LC data has been stored. Let's say you've tuned > up the ATU only at 7000 and 7250 kHz on 40 m. If you move the VFO to > 7180 and transmit, the ATU will load the settings from the 7250 kHz > bin, since that's the closest one. > > > > > My antenna tuner seems to me to retune too often. Again my > > expectations may > > not match how the tuner works. > > This depends on the Q of the antenna. If Q is high (i.e. the antenna > is narrow-banded), the ATU will retune more often. You could if you > wish go through each band and tune up at the intervals mentioned > above. On 160 m you'd start somewhere between 1800 and 1810 kHz, etc. > But this is definitely not necessary. > > Up to 30 LC settings are stored for both antennas on all bands. > > All settings are saved in EEPROM so you don't have to retune if you > power the radio off. > > 73, > Wayne > N6KR > > > > > Some topics for said tutorial would include: (1) frequency spacing for > > tuning settings on each band, (2) does the tuner remember settings > > for an > > antenna from one time when the radio was on to the next time the > > radio was > > on, (3) does the tuner remember previous tuned setting from a > > previous visit > > to a band, (4) how far the SWR must be off for the tuner to retune, > > (5) how > > does the tuner indicate a failure to tune, (6) does it make sense to > > tune > > ahead so to speak where you may want to have the antenna tuned up > > ahead of > > an event? > > > > Don, N0YE > > -- > > View this message in context: > > http://n2.nabble.com/K3-KAT3-Antenna-Tuner-Tutorial-tp3868991p3868991.html > > Sent from the Elecraft mailing list archive at Nabble.com. > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K4QO and 3 others silent key
I have just received this news through another reflector. Randy K4QO was one of the early K2 users - in fact a K2 Field Tester if I recall correctly. Although he has not been active on the Elecraft reflector recently, I am certain he will be remembered and missed by many. My condolences to his family. 73, Don W3FPR --- 4 Die in Small Plane Crash Near Charleston SC By BRUCE SMITH The Associated Press Wednesday, October 21, 2009; 5:16 PM JEDBURG, S.C. -- Authorities say four men killed when a small plane crashed and burst into flames near the South Carolina coast were friends heading to an amateur radio convention in the Bahamas. Dorchester County Coroner Chris Nesbit identified three of the victims of Wednesday's crash as the pilot and plane's owner, Peter Radding of North Charleston, and passengers Edwin Steeble and James Randolph Hargenrader, both of Summerville. Nesbit says the fourth victim was from Delaware, but didn't release other information because his family had not been contacted. Authorities say the twin-engine Piper PA-23 crashed shortly after departure around 6:45 a.m. near the Summerville airport in a rural area near Jedburg, 30 miles northwest of Charleston. The men were planning a stop in Florida __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 KAT3 Antenna Tuner Tutorial
Hi Don, The manual is a bit sparse in this area -- I'll improve it next time. > The user manual says that there are up to 30 ATU settings stored for > each antenna on each band by the antenna tuner. Yes. 10 kHz per segment on 160 m, 20 kHz per segment on 80-12 m, 100 kHz on 10 m, and 200 kHz on 6 m. > There is no further discussion as to when a setting is saved or how > a setting is chosen from those saved. When you hit ATU TUNE, the ATU checks the SWR and goes through the matching process if necessary. If so, new LC settings is saved for the present band segment. > Is the frequency tracked as the VFO changes and a new setting put > into the antenna tuner when the VFO has been changed enough? Does a > setting get changed if the VFO has changed > enough and the K3 instructed to transmit? LC network changes do not occur in receive mode, as we found that very distracting. Instead they occur on band change or antenna change, or (if necessary) when you transmit. If you have moved the VFO from one segment to another since the last transmission, and the best available LC settings have also changed, the ATU will automatically load the new settings when you transmit. The "ATU" icon flashes briefly to let you know this has occurred. "Best available" is determined by comparing the present VFO location to segments for which LC data has been stored. Let's say you've tuned up the ATU only at 7000 and 7250 kHz on 40 m. If you move the VFO to 7180 and transmit, the ATU will load the settings from the 7250 kHz bin, since that's the closest one. > > My antenna tuner seems to me to retune too often. Again my > expectations may > not match how the tuner works. This depends on the Q of the antenna. If Q is high (i.e. the antenna is narrow-banded), the ATU will retune more often. You could if you wish go through each band and tune up at the intervals mentioned above. On 160 m you'd start somewhere between 1800 and 1810 kHz, etc. But this is definitely not necessary. Up to 30 LC settings are stored for both antennas on all bands. All settings are saved in EEPROM so you don't have to retune if you power the radio off. 73, Wayne N6KR > > Some topics for said tutorial would include: (1) frequency spacing for > tuning settings on each band, (2) does the tuner remember settings > for an > antenna from one time when the radio was on to the next time the > radio was > on, (3) does the tuner remember previous tuned setting from a > previous visit > to a band, (4) how far the SWR must be off for the tuner to retune, > (5) how > does the tuner indicate a failure to tune, (6) does it make sense to > tune > ahead so to speak where you may want to have the antenna tuned up > ahead of > an event? > > Don, N0YE > -- > View this message in context: > http://n2.nabble.com/K3-KAT3-Antenna-Tuner-Tutorial-tp3868991p3868991.html > Sent from the Elecraft mailing list archive at Nabble.com. > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] W2 Resolution
On Wed, 21 Oct 2009 13:41:09 -0500, Grant Youngman wrote: >You won't get higher accuracy by using the PC interface -- only higher >precision. It's also kind of important to note that the spec is +/- >0.5dB. Doesn't say if that's of indicated power or of scale maximum. >Nonetheless, you can get all the digits of precision through a PC >readout you want, you still are only going to be +/- 100 watts >accurate or so in the middle of the 2K range. This is consistent with >the accuracy of other similar good quality RF Power meters. > >It wouldn't seem to matter all that terribly much that the LEDs only >give you 20 intervals, or that you could possibly get readings to the >watt on the 2KW (or even the 200W) range. Once you throw in >measurement error, you still only know your output power within some >range of a few percent. > >Grant/NQ5T > Those of you who didn't understand my previous post please substitute PRECISION for ACCURACY. Thanks, Grant Tom, N5GE n...@n5ge.com K3 #806, K3 #1055, PR6, XV144, XV432, KRC2, W1 and other small kits. 2 W2's on order 1 K144XV on order http://www.n5ge.com http://www.swotrc.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
[Elecraft] K3 KAT3 Antenna Tuner Tutorial
The K3 KAT3 antenna tuner is a puzzle to me. The user manual says that there are up to 30 ATU settings stored for each antenna on each band by the antenna tuner. There is no further discussion as to when a setting is saved or how a setting is chosen from those saved. Is the frequency tracked as the VFO changes and a new setting put into the antenna tuner when the VFO has been changed enough? Does a setting get changed if the VFO has changed enough and the K3 instructed to transmit? My antenna tuner seems to me to retune too often. Again my expectations may not match how the tuner works. I would appreciate a tuner tutorial for the KAT3. Some topics for said tutorial would include: (1) frequency spacing for tuning settings on each band, (2) does the tuner remember settings for an antenna from one time when the radio was on to the next time the radio was on, (3) does the tuner remember previous tuned setting from a previous visit to a band, (4) how far the SWR must be off for the tuner to retune, (5) how does the tuner indicate a failure to tune, (6) does it make sense to tune ahead so to speak where you may want to have the antenna tuned up ahead of an event? Don, N0YE -- View this message in context: http://n2.nabble.com/K3-KAT3-Antenna-Tuner-Tutorial-tp3868991p3868991.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] Feature request
DM4iM wrote: >> Actually Martin, I do use the RIT with the Split mode >> > > Ok, so what about this With the next beta release, K3 users will be able to customize SPLIT operation, as well as many other functions. For example, you'll be able to define a single switch tap or hold that does: A>B/A>B SPLIT VFO B up 2 kHz (or any other amount) It could even turn on the sub RX, enter diversity mode, set main and sub bandwidths, clear RIT, etc. Details soon. 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] [K3] Feature request
The Smiths wrote: > Actually Martin, I do use the RIT with the Split mode. Here's why: > > Some times when you're listening to the DX station, and other start > transmitting on top of him, > it's nice to RIT away from his beat Freq. up or down a little so that you >can move the shift knob over +/- and get rid of those other people. > Or just improve the ability to hear a weak signal once you've used the "auto > spot" feature. > > Although you're idea isn't all that bad, assuming it's off.. Ok, so what about this: A single-tap clears RIT if RIT is ON, does nothing if RIT is OFF; double-tapping clears RIT (if ON) *and* sets the RX-Vfo back to the configured offset. >> From: hamra...@vr-web.de >> To: elecraft@mailman.qth.net >> Date: Mon, 19 Oct 2009 23:11:41 +0200 >> Subject: [Elecraft] Feature request >> >> What do you elecrafters think about this: >> >> 1. When you are running SPLIT ( assuming RIT & XIT are OFF), tapping CLR >> puts the RX-VFO to the same frequency as the TX-VFO (TX). No one would >> run SPLIT and use RIT and/or XIT simultaneously, would you? >> >> 2. Or, even better: When you are running SPLIT, tapping CLR puts your >> RX-VFO a (config)-selectable number of +- khz (starting with 0 khz = no >> SPLIT) offset to your TX-VFO. This ensures that DXPeditioners or >> Contesters easily can return to their announced qsx-freq. >> >> Sorry for the bandwidth if there is already a method to accomplish this >> in a similar way. I must have missed it then. >> >> Martin >> -- 73, DM4iM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] FT Firmware For Limited Distribution
If you have been using Beta 3.44/2.38 firmware and have reported a problem with it, please email me directly and I will send you an FT version of code that *may* fix the problem. In return, please test it and see if it fixes (or changes) the symptoms and let me know. Please do not report problems with this test code to the reflector or K3support - this is early code! If you have not reported a problem, please don't request the code. I need to keep the email volume to a minimum, and focus on reported problems. Thank you! 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] W2 Resolution
You won't get higher accuracy by using the PC interface -- only higher precision. It's also kind of important to note that the spec is +/- 0.5dB. Doesn't say if that's of indicated power or of scale maximum. Nonetheless, you can get all the digits of precision through a PC readout you want, you still are only going to be +/- 100 watts accurate or so in the middle of the 2K range. This is consistent with the accuracy of other similar good quality RF Power meters. It wouldn't seem to matter all that terribly much that the LEDs only give you 20 intervals, or that you could possibly get readings to the watt on the 2KW (or even the 200W) range. Once you throw in measurement error, you still only know your output power within some range of a few percent. Grant/NQ5T On Oct 21, 2009, at 12:49 PM, Radio Amateur N5GE wrote: > On Wed, 21 Oct 2009 10:34:40 -0700, "Don Ehrlich" > wrote: > >> The photos of the W2 appear to show 20 LEDs in a row which will >> provide a >> power display resolution of only 100 watts in the 2 KW scale, 10 >> watts with >> the 200 watt scale. That means if I see the 300 watt LED lit up I >> will know >> only that my power output is somewhere between 250 and 350 watts. >> Is that >> right? >> >> Don K7FJ >> > [snip] > > The Product sheet on the web site says there is software to use for > higher accuracy readings. I imagine I will use the software if I want > a higher resolution reading. That's what I do with the W1. > > 73, > > Tom, N5GE > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 fan leads?
Hi Tom, This is covered in the KPA3 manual: http://www.elecraft.com/manual/KPA3_Option_Installation_Rev_E.pdf page 16. GL, ~Iain / N6ML On Wed, Oct 21, 2009 at 11:06 AM, wrote: > I am putting my K3 back together after having to replace the original > P67B connectors with gold pins after rtty contest smoked the pins last > month. Tnx to Gary S for working with me long distance to figure out the > problem. My K3 , #250 had plated pins vs the newer gold pins...this is a > factory assembled K3 so I was very leery of diving into the guts of the > rig. thankfully Gary walked me thru it and now the final step of putting > lids back on, etc, I am hooking up the fans. I dont remember which goes > to which, or if it even matters...a short lead, red/blue seems to fit > the outboard pins and the longer lead, black/red seem to fit the inboard > male connectors. Before I give it the smoke test, do I need to correct this? > Finally, on the power leads to the 20A fuse...I have outmost going to > top connector and innermost going to bottom connector of circuit > breaker. Not sure if it makes a difference but at this point, just b4 > ssb contest, dont want to make bonehead mistake. > Tnx and CU in test > Tom > CX7TT > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: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] W2 Resolution
IMHO from RTFM = From the Manual on the W2 Copies below, you will see that the W2 will range the sensors. The 2KW sensor for instance can show only 0-20 watts so with 20 lights, the lowest light lit would be 1 watt. and for the 200 w sensor it will be 1/10 watt. 73. de Jim KG0KP Directional Couplers (Sensors)1 Size (H x W x D) 2.5" x 2.3" x 5.0" (6.4 cm x 5.8 cm x 12.7 cm), not including connectors. Weight 7.5 oz. (0.21 kg) typical Power Range: (200W Sensor) 0-2W, 0-20W, 0-200W, Auto (2 KW sensor) 0-20W, 0-200W, 0-2000W, Auto Accuracy: +/- 0.5 dB typical Frequency Range: (HF Sensors) 1.8 - 54 MHz (VHF Sensors) 150 - 450 MHz Sensor Cable: 5'6" (168 cm) 8-conductor Ethernet (CAT 5) with RJ45 connectors. - Original Message - From: "Radio Amateur N5GE" To: "Don Ehrlich" Cc: Sent: Wednesday, October 21, 2009 12:49 PM Subject: Re: [Elecraft] W2 Resolution > On Wed, 21 Oct 2009 10:34:40 -0700, "Don Ehrlich" > wrote: > >>The photos of the W2 appear to show 20 LEDs in a row which will provide a >>power display resolution of only 100 watts in the 2 KW scale, 10 watts >>with >>the 200 watt scale. That means if I see the 300 watt LED lit up I will >>know >>only that my power output is somewhere between 250 and 350 watts. Is that >>right? >> >>Don K7FJ >> > [snip] > > The Product sheet on the web site says there is software to use for > higher accuracy readings. I imagine I will use the software if I want > a higher resolution reading. That's what I do with the W1. > > 73, > > Tom, N5GE > > n...@n5ge.com > K3 #806, K3 #1055, PR6, > XV144, XV432, KRC2, > W1 and other small kits. > > 2 W2's on order > 1 K144XV on order > > http://www.n5ge.com > http://www.swotrc.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 > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 fan leads?
I am putting my K3 back together after having to replace the original P67B connectors with gold pins after rtty contest smoked the pins last month. Tnx to Gary S for working with me long distance to figure out the problem. My K3 , #250 had plated pins vs the newer gold pins...this is a factory assembled K3 so I was very leery of diving into the guts of the rig. thankfully Gary walked me thru it and now the final step of putting lids back on, etc, I am hooking up the fans. I dont remember which goes to which, or if it even matters...a short lead, red/blue seems to fit the outboard pins and the longer lead, black/red seem to fit the inboard male connectors. Before I give it the smoke test, do I need to correct this? Finally, on the power leads to the 20A fuse...I have outmost going to top connector and innermost going to bottom connector of circuit breaker. Not sure if it makes a difference but at this point, just b4 ssb contest, dont want to make bonehead mistake. Tnx and CU in test Tom CX7TT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 fan leads?
I am putting my K3 back together after having to replace the original P67B connectors with gold pins after rtty contest smoked the pins last month. Tnx to Gary S for working with me long distance to figure out the problem. My K3 , #250 had plated pins vs the newer gold pins...this is a factory assembled K3 so I was very leery of diving into the guts of the rig. thankfully Gary walked me thru it and now the final step of putting lids back on, etc, I am hooking up the fans. I dont remember which goes to which, or if it even matters...a short lead, red/blue seems to fit the outboard pins and the longer lead, black/red seem to fit the inboard male connectors. Before I give it the smoke test, do I need to correct this? Finally, on the power leads to the 20A fuse...I have outmost going to top connector and innermost going to bottom connector of circuit breaker. Not sure if it makes a difference but at this point, just b4 ssb contest, dont want to make bonehead mistake. Tnx and CU in test Tom CX7TT __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] W2 Resolution
On Wed, 21 Oct 2009 10:34:40 -0700, "Don Ehrlich" wrote: >The photos of the W2 appear to show 20 LEDs in a row which will provide a >power display resolution of only 100 watts in the 2 KW scale, 10 watts with >the 200 watt scale. That means if I see the 300 watt LED lit up I will know >only that my power output is somewhere between 250 and 350 watts. Is that >right? > >Don K7FJ > [snip] The Product sheet on the web site says there is software to use for higher accuracy readings. I imagine I will use the software if I want a higher resolution reading. That's what I do with the W1. 73, Tom, N5GE n...@n5ge.com K3 #806, K3 #1055, PR6, XV144, XV432, KRC2, W1 and other small kits. 2 W2's on order 1 K144XV on order http://www.n5ge.com http://www.swotrc.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] W2 Resolution
What sold me on the W2 is the ability to display in high resolution on my computer. Don Ehrlich wrote: > > The photos of the W2 appear to show 20 LEDs in a row which will provide a > power display resolution of only 100 watts in the 2 KW scale, 10 watts > with > the 200 watt scale. That means if I see the 300 watt LED lit up I will > know > only that my power output is somewhere between 250 and 350 watts. Is that > right? > > Don K7FJ > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- View this message in context: http://n2.nabble.com/W2-with-K3-internal-tuner-tp3861641p3867060.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 firmware upgrade via Microham MKII
John: I wouldnt try it. Both Elecraft and MicroHam disclaim it. Here is what I do: My Ham Radio computer has a dedicated Serial port. I have two MicroKeyers (an original and a 2) which I use to drive my K3 and my secondary TS570. Both of these are driven by single USB cables. Since the K3 requires exclusive access to the serial port for config and upgrades, I have purchased a very inexpensive ($8 new), RS232 one by two data switch. I plug the MicroKeyer 2's serial CAT connector into one section and the serial line from my computer's single serial port to the second connector. I then place a gender changer on the common DB9, then place a RS232 cable from that DB9 to the K3 CAT connector. When I need radio control from my logging programs, I "patch" the MicroHam control through to the K3, when I need to upgrade software, I place the switch in the other position and "patch" the serial port directly from the computer into the radio. No issues and no problems in two months of K3 operation (with many software upgrades accomplished). Lu-W4LT K3 # 3192 Message: 8 Date: Tue, 20 Oct 2009 22:21:06 -0400 From: "John Gaynard" Subject: [Elecraft] K3 firmware upgrade via Microham MKII To: Message-ID: <028401ca51f5$2554c3f0$6ffe4b...@rr.com> Content-Type: text/plain;charset="us-ascii" Can the Microham MKII be used to do the K3 Firmware upgrade. I know it was possible but after the loader was originally upgraded there was a possible glitch that would cause the firmware load to fail. My firmware is at 2.38 and I think it is time to come out of the Dark Ages once again. John K8WDN K3 #157 -- __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] W2 Resolution
The photos of the W2 appear to show 20 LEDs in a row which will provide a power display resolution of only 100 watts in the 2 KW scale, 10 watts with the 200 watt scale. That means if I see the 300 watt LED lit up I will know only that my power output is somewhere between 250 and 350 watts. Is that right? Don K7FJ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 firmware upgrade via Microham MKII
I always use my MKII to do the upgrade. Followed the procedure as Joe describes. No problems. If you are in doubt first try to save the configuration to test the communication. I know this procedure is not recommended. 73 Henk PA5KT Richard Thorne schreef: > Thats the only bummer about he MKII. On my operating table its a bit of > a challenge to have to swap out cables on the back of the rig. I guess > an extension off of the K3 could be made so one doesn't have to drag the > rig out to make the change. > > Rich - N5ZC > > > Joe Subich, W4TV wrote: > >> >> >>> Can the Microham MKII be used to do the K3 Firmware upgrade. >>> >>> >> No. >> >> You might get lucky with a complicated set-up; set Radio to >> "No Radio," use only one CAT port, set the K3 to 38,400 bps and >> set the K3 Utility to "keep speed at 38,400 bps. However, the >> chance of errors is so high that it is not worth the risk. >> >> I keep a real serial port/cable handy for firmware updates and >> I've still had intermittent upload failures. >> >> 73, >> >>... Joe, W4TV >> >> >> >> >> >> >>> -Original Message- >>> From: elecraft-boun...@mailman.qth.net >>> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Gaynard >>> Sent: Tuesday, October 20, 2009 10:21 PM >>> To: elecraft@mailman.qth.net >>> Subject: [Elecraft] K3 firmware upgrade via Microham MKII >>> >>> >>> Can the Microham MKII be used to do the K3 Firmware upgrade. >>> I know it was possible but after the loader was originally >>> upgraded there was a possible glitch that would cause the >>> firmware load to fail. My firmware is at 2.38 and I think it >>> is time to come out of the Dark Ages once again. >>> >>> >>> >>> John >>> >>> K8WDN K3 #157 >>> >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >>> >>> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> >> >> No virus found in this incoming message. >> Checked by AVG - www.avg.com >> Version: 8.5.423 / Virus Database: 270.14.24/2449 - Release Date: 10/20/09 >> 18:42:00 >> >> >> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > -- Henk Remijn PA5KT email: pa...@remijn.net www: www.remijn.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
[Elecraft] WANTED: KPA3
anyone have KPA3 for sale?? ,, __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 50Hz background noise
Make sure there is a ground wire on the rotator controller. That knocked the hum way down here. I had the same problem with my TS-850's, and there were no audio input transformers in that rig. Dave Hachadorian, K6LL Yuma, AZ - Original Message - From: "Igor Sokolov" Cc: "Elecraft" Sent: Wednesday, October 21, 2009 4:35 PM Subject: [Elecraft] k3 50Hz background noise > My friend, K3 user is getting ready for CQWW SSB. In his > installation the > rotator control box that has pretty large transformer > inside. The box is > only few inches away from one of the two K3s and cannot > be moved. He has > discovered that magnetic field created by this transformer > interacts with > the AF transformer (Line in) in K3. The indused 50Hz noise > is only 20db down > from the audio signal. The noise is gone when line in is > switched off in the > menu but that leaves him without voice keyer which is > tough to be deprived > of in 48 hours SSB contest. Has anybody found a solution > yet. He now thinks > of taking the transformers out of the radio an bypassing > them. He thinks > that the problem roots to the fact that the K3 cabinet is > made of aluminum. > > 73, Igor UA9CDC > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto: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 50Hz background noise
My friend, K3 user is getting ready for CQWW SSB. In his installation the rotator control box that has pretty large transformer inside. The box is only few inches away from one of the two K3s and cannot be moved. He has discovered that magnetic field created by this transformer interacts with the AF transformer (Line in) in K3. The indused 50Hz noise is only 20db down from the audio signal. The noise is gone when line in is switched off in the menu but that leaves him without voice keyer which is tough to be deprived of in 48 hours SSB contest. Has anybody found a solution yet. He now thinks of taking the transformers out of the radio an bypassing them. He thinks that the problem roots to the fact that the K3 cabinet is made of aluminum. 73, Igor UA9CDC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] contest
Hi Elecrafters, Cqww is here, and I wonder how you use your k3 against splatters and ovecrowded bands. Any advise or trick is wellcome. Hope to work you in the contest. 73 de Manolo EA7LL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] contest
Hi Elecrafters, Cqww is here, and I wonder how you use your k3 against splatters and ovecrowded bands. Any advise or trick is wellcome. Hope to work you. 73 de Manolo EA7LL __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] N2CQ QRP Contest Calendar: Oct 24 - Nov 25, 2009
~ N2CQ QRP CONTEST CALENDAR October 24 - November 25, 2009 ~ Worked All ARCI Challenge (CW/Dig/Ph) QRP Event! thru Dec 31 Info: http://www.qrparci.org/waac ~ Ten-Ten QSO Party (CW/Digital) ... QRP Category Oct 24, 0001z to Oct 25, 2359z Rules: http://www.ten-ten.org/Forms/QSOPartyRulesRevised.pdf ~ CQ WW DX Contest (SSB) ... QRP Category Oct 24, z to Oct 25, 2359z Rules: http://www.cqww.com/2009_Rules_cqww.pdf ~ MQFD Monthly Sprint (CW/PH/Digital) *** QRP Contest *** Oct 24, 1800z to 2200z Rules: http://w2agn.net/mqfdsprint.html ~ SKCC Sprint (Straight Key CW) ... QRP Awards Oct 28, z to 0200z Rules: http://www.skccgroup.com/sprint/sks/ ~ Zombie Shuffle (CW) *** QRP CONTEST *** Oct 30, Local Sundown to Local Midnight (Any 4 hour period) Rules: http://www.zianet.com/QRP/ ~ HA-QRP Contest (CW - 80 Meters) *** QRP Contest*** Nov 1, z to Nov 7, 2400z Rules: http://www.radiovilag.hu/haqrp2.htm ~ Daylight Savings Time Ends Nov 1, 0200 AM ~ High Speed Club Contest (CW) ... QRP Category Nov 1, 0900z to 1100z and 1500z to 1700z Rules: http://www.dl3bzz.de/html/hscconte.html ~ Adventure Radio Spartan Sprint (CW) *** QRP Event! *** Nov 2, 0200z to 0400z (First Monday 9 PM EST) Rules: http://adventure-radio.org/wiki/index.php?title=Spartan_Sprints ~ Ukrainian DX Contest (CW/SSB) ... QRP Category Nov 7, 1200z to Nov 8, 1200z Rules: http://www.ucc.zp.ua/urdxc2009rules_eng.htm ~ ARRL Sweepstakes (CW) ... QRP Category Nov 7, 2100z to Nov 9, 0300z Rules: http://www.arrl.org/contests/rules/2009/novss.html ~ NA Collegiate ARC Championship (CW) .. QRP Category Nov 7, 2100z to Nov 9, 0300z Rules: http://www.collegiatechampionship.org/rules/ ~ SKCC Weekend Sprintathon (Straight Key CW) ... QRP Category Nov 8, z to 2359z Rules: http://www.skccgroup.com/sprint/wes/ ~ 80 METER FOXHUNT (CW) *** QRP Contest *** Each Tuesday Begining Nov 10 Thru Mar 23 9 PM to 10:29 PM Eastern Time USA Info: http://www.qrpfoxhunt.org/ ~ 40 METER FOXHUNT (CW) *** QRP Contest *** Each Thursday Begining Nov 12 Thru March 25 9 PM to 10:29 PM Eastern Time USA Info: http://www.qrpfoxhunt.org/ ~ WAE RTTY Contest ... 100W Category Nov 14, z to Nov 15, 2359z Rules: http://www.darc.de/referate/dx/xedcwr.htm ~ Japan International DX Contest (phone)... 100w category Nov 14, 0700z to Nov 15, 1300z Rules: http://jidx.org/jidxrule-e.html ~ OK/OM DX Contest (CW) ... QRP Category! Nov 14, 1200z to Nov 15, 1200z Rules: http://okomdx.crk.cz/g.html ~ Kentucky QSO Party (CW/Ph) Nov 14, 1400z to Nov 15, 0200z Rules: http://www.wkdxa.com ~ RUN FOR THE BACON (CW) *** QRP CONTEST *** EDT: Oct 15, 9 PM to 11 PM UTC: Oct 16, 0200z 0400z Rules: http://www.fpqrp.com/ ~ NAQCC Straight Key/Bug Sprint *** QRP CONTEST! *** EST: Nov 18, 8:30 PM to 10:30 PM UTC: Nov 19, 0130z to 0330z Rules: http://www.arm-tek.net/~yoel/contests.html ~ YO International PSK31 Contest (80 Meters) ... 50W max Nov 20, 1600z to 2200z Rules: http://www.yo5crq.ro/Rules2009EN.htm ~ LZ DX CONTEST (CW/SSB) ... QRP Category Nov 21, 1200z to Nov 22, 1200z Rules: http://lzdx.bfra.org/rulesen.html ~ ARRL Sweepstakes (Phone) ... QRP Category Nov 21, 2100z to Nov 23, 0300z Rules: http://www.arrl.org/contests/rules/2009/novss.html ~ NA Collegiate ARC Championship (CW) .. QRP Category Nov 21, 2100z to Nov 23, 0300z Rules: http://www.collegiatechampionship.org/rules/
[Elecraft] K3 Downloading Beta Versions in Vista
All computer wizards may ignore this post. It is written for the "computer challenged," such as my self, who are using *Vista.* The "K3 Beta Test Firmware Instructions" were a bit confusing to me and not detailed enough. This is how I was able to download a beta version. Item 3 of Instructions: After right clicking on the .zip file, click on "save link as." In the pop up window, ignore the "save as type" (mine says "all files"). Enter the path to the beta folder you created, e.g., "K3 Beta." Go to whatever Windows Explorer, e.g., "Computer." In your "K3 Beta" folder, you will see a new folder labeled "k3fw3rxx". Double click on this folder. After double clicking, you will see the files and at the top you will see "Extract all files." Click on Extract. The path to these extracted files is what you enter in your K3 utility. There may be a more elegant way to do it but this worked for me and hope this helps any others that are a bit shaky on computer skills -- again, like me! 73, Lee (K9CM) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KE8UW Re: Just finished K2 and finals look to be oscillating at 450KHz...
Good idea...I'm at that stage where I need to check parts and try to isolate. The receiver and all works well. Thanks, Chuck, KE9UW Original message >Date: Wed, 21 Oct 2009 08:42:52 -0400 >From: Don Wilhelm >Subject: Re: [Elecraft] KE8UW Re: Just finished K2 and finals look to be >oscillating at 450KHz... >To: c-haw...@illinois.edu >Cc: elecraft > >Chuck, > >Since you have a 'scope, I would suggest you remove the PA transistors >from the picture and see if the oscillation persists. You can easily >de-solder T3 which will remove voltage from the PA collectors. >If you still have the oscillation at the base of Q7/8 (or at the >collector) of Q6, then you can more easily troubleshoot it without fear >of damaging the PA transistors. >Q6 can similarly be taken out of the operating condition by removing a >choke or resistor. I don't have the schematics with me while on >vacation, so you will have to find out which one on your own. > >73, >Don W3FPR > >C. J. Hawley wrote: >> Yes the W6 point gets 8 volts either thru the diode D2 or D6 depending on >> whether in receive or xmit. I think I have an oscillator at Q5-Q6. I am >> checking all the feedback chokes and capacitors. I may need to unsolder C118 >> and see if it is infact a capacitor inside the shell and maybe also C120. >> RFC6 checks ok, R49, R470, etc. >> Thanks for the interest and help. >> >> Chuck, KE9UW >> >> __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 AF volume
We'll be sending test firmware to those experiencing this, probably today. Wayne __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KE8UW Re: Just finished K2 and finals look to be oscillating at 450KHz...
Chuck, Since you have a 'scope, I would suggest you remove the PA transistors from the picture and see if the oscillation persists. You can easily de-solder T3 which will remove voltage from the PA collectors. If you still have the oscillation at the base of Q7/8 (or at the collector) of Q6, then you can more easily troubleshoot it without fear of damaging the PA transistors. Q6 can similarly be taken out of the operating condition by removing a choke or resistor. I don't have the schematics with me while on vacation, so you will have to find out which one on your own. 73, Don W3FPR C. J. Hawley wrote: > Yes the W6 point gets 8 volts either thru the diode D2 or D6 depending on > whether in receive or xmit. I think I have an oscillator at Q5-Q6. I am > checking all the feedback chokes and capacitors. I may need to unsolder C118 > and see if it is infact a capacitor inside the shell and maybe also C120. > RFC6 checks ok, R49, R470, etc. > Thanks for the interest and help. > > Chuck, KE9UW > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 AF volume
Hi Gary, Join the club. I've been having random low audio on switch on for a while now. Switching off and then back on again restores volume. Regards, Mike VP8NO - Original Message - From: To: "Elecraft" Sent: Wednesday, October 21, 2009 8:40 AM Subject: [Elecraft] K3 AF volume Hi, I have noticed that at times the audio volume on ssb will be reduced. I have to run the volume set at Hi and the knob set around full clockwise. At other times it will be fine at around the 1 o'clock position with either headphones or speaker. FW 3.41 This has been evident for sometime and on earlier FW versions also. Will FW 3.44 fix this or is it something else? Not using NR or NB when this reduced volume is evident. Affects all bands I cannot seem to find a way to force it to do this, it appears random to me. Gary Sent via BlackBerry® from Telstra __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 AF volume
Hi, I have noticed that at times the audio volume on ssb will be reduced. I have to run the volume set at Hi and the knob set around full clockwise. At other times it will be fine at around the 1 o'clock position with either headphones or speaker. FW 3.41 This has been evident for sometime and on earlier FW versions also. Will FW 3.44 fix this or is it something else? Not using NR or NB when this reduced volume is evident. Affects all bands I cannot seem to find a way to force it to do this, it appears random to me. Gary Sent via BlackBerry® from Telstra __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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 firmware upgrade via Microham MKII
Thats the only bummer about he MKII. On my operating table its a bit of a challenge to have to swap out cables on the back of the rig. I guess an extension off of the K3 could be made so one doesn't have to drag the rig out to make the change. Rich - N5ZC Joe Subich, W4TV wrote: > >> Can the Microham MKII be used to do the K3 Firmware upgrade. >> > > No. > > You might get lucky with a complicated set-up; set Radio to > "No Radio," use only one CAT port, set the K3 to 38,400 bps and > set the K3 Utility to "keep speed at 38,400 bps. However, the > chance of errors is so high that it is not worth the risk. > > I keep a real serial port/cable handy for firmware updates and > I've still had intermittent upload failures. > > 73, > >... Joe, W4TV > > > > > >> -Original Message- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Gaynard >> Sent: Tuesday, October 20, 2009 10:21 PM >> To: elecraft@mailman.qth.net >> Subject: [Elecraft] K3 firmware upgrade via Microham MKII >> >> >> Can the Microham MKII be used to do the K3 Firmware upgrade. >> I know it was possible but after the loader was originally >> upgraded there was a possible glitch that would cause the >> firmware load to fail. My firmware is at 2.38 and I think it >> is time to come out of the Dark Ages once again. >> >> >> >> John >> >> K8WDN K3 #157 >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > > No virus found in this incoming message. > Checked by AVG - www.avg.com > Version: 8.5.423 / Virus Database: 270.14.24/2449 - Release Date: 10/20/09 > 18:42:00 > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] Wanted: K2
Looking to buy K2 with some options considered. Please let me know what you have and price. Please repond off the list to scamp588 at yahoo.com. Will only use Paypal. 73, Terry KC4YTF __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] KE8UW Re: Just finished K2 and finals look to be oscillating at 450KHz...
Yes the W6 point gets 8 volts either thru the diode D2 or D6 depending on whether in receive or xmit. I think I have an oscillator at Q5-Q6. I am checking all the feedback chokes and capacitors. I may need to unsolder C118 and see if it is infact a capacitor inside the shell and maybe also C120. RFC6 checks ok, R49, R470, etc. Thanks for the interest and help. Chuck, KE9UW Original message >Date: Tue, 20 Oct 2009 23:40:36 -0400 >From: Don Wilhelm >Subject: Re: [Elecraft] Just built K2 and finals seem to be oscillating... >To: c-haw...@illinois.edu > >Chuck, > >I have given you about all the info I can until I can refer to the >schematics and make a guess about where the 450 Hz might be coming >from. I am currently thinking that there should be no DC at W6, but I >could be wrong on that. > >As far as the sidetone source - yes, with firmware 2.04r, you must add >the sidetone source wiring change to obtain sidetone for all control >boards below SN 3000 - whether or not you have the KIO2 or KPA100 >installed. The statements in the firmware document override since they >are dated later than the A to B upgrade or the KIO2 or KPA100 >instructions. Version 2.04r firmware eliminated the U6-25 sidetone >output option and will save a lot of support effort in the future. > >73, >Don W3FPR > > >C. J. Hawley wrote: >> Thanks. I went back and re-read his note and he did mention K2-T2 as well. >> Then I went to the newest manual and K2-T1 and K2-T2 are now shown wound the >> way he did them for me. All reverse from the original manual. So that's not >> an issue I see. >> I still don't have a solution though. I checked 8T, 8R, measured all the D1 >> thru D4 diodes, took out the 160M board and shorted J14 to restore W1, >> resistance checked to see that all the chokes, etc. are installed in the T-R >> switch area. >> >> After more careful checking with the power knob all the way down, I get >> about 3 vpp at W6 riding on 8 vdc. I get very small voltage at BPF on >> transmit and as well on Xmixer and buffer. 40 vpp with 8 vdc on D3-D4 >> cathodes, 60 vpp at 0 vdc on W1 (with 160 removed), and the same 60 vpp at 0 >> vdc on the output ant jack. Fundamental freq is about 450KHz. >> >> I also read the instructions for rev 2.04 firmware which said to revise the >> A board according to KIO2 mod details for sidetone, but I kept going back to >> rev B mod page where it said I didn't have to if I didn't have KIO2. The >> issue is that the new rev 2.04 firmware does not have the option to use >> U6-25. It only allows U8-4. Once I cut the trace, etc. all works well for >> the sidetone. >> >> Beats me... >> >> Chuck, KE9UW >> >> Original message >> >>> Date: Tue, 20 Oct 2009 17:56:27 -0400 >>> From: Don Wilhelm >>> Subject: Re: [Elecraft] Just built K2 and finals seem to be oscillating... >>> >>> To: c-haw...@illinois.edu >>> Cc: elecraft >>> >>> Chuck, >>> >>> The winding sense that The Toroid Guy was referring to is T1 and T2 for >>> the KSB2 board, not the base K2. >>> The winding sense on those transformers will make no difference. >>> >>> From your previous post, I see you have an oscillation that appears as >>> far back as W6. That can be a problem muh earlier in the transmit >>> chain, like at the TX mixer or the Transmit buffer. Check the RF levels >>> of the VFO and BFO at the transmit mixer (see the Receive and Transmit >>> Signal Tracing sections in the back of the manual for the normal levels. >>> Also check the frequency at TP2 and TP1 to be certain they are correct - >>> the VFO frequencies for each band are listed on the Schematic Key page. >>> >>> 73, >>> Don W3FPR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto: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] K3 and Beta 3.44
Don't know if the issue I'm observing is linked to the one described above: When calling CQ in PACTOR FEC (simple 2-tone AFSK signal) in DATA-A mode, 5 ALC bars: - up to FW 3.42: External wattmeter shows steady power close to the requested power level - FW 3.44: External wattmeter keeps oscillating between 50...100% of requested power. 73, Markus HB9BRJ -- View this message in context: http://n2.nabble.com/K3-and-Beta-3-44-tp3859857p3863691.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
