Re: [Elecraft] K2 K3 (ssb)
Listening to one's own speech via another receiver, to optimise one's own transmit settings still gives a subjective result, *on average*, no better than another radio listener. Inevitably, it will be a question of personal taste, unless you have special training. It is true that radio amateurs are self trained to pick out particular words and phrases in contest or noisey conditions, but, is there no better way to make adjustments independent of taste and personal judgement? eg speaking standard words to record speech spectrograms. Can these be used to determine clarity? David G3UNA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] re: K2
My K2 is excellent on SSB. Care in alignment is necessary. John KH7T ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 SSB strange Behaviour
Hello Gary, Friday, February 8, 2008, 9:16:59 PM, you wrote: GH> Eventhough you resolved your problem you might be GH> interested in the reply belowfrom Elecraft. The problem seems to be in the EEprom. Somehow it got RF on his belly and stopped funktioning normally I did all the stuff down below but it did not solve the problem. After an EE Init (Page 54 of the manual) and putting the parameters back in the menu, the problem was solved. Thanks support which respond within 45 minutes after I asked them fantastic.. 73 de Tom HB9DOD KL5X K3 #29 an a former K2 owner.way back GH> From: Gary Surrency [mailto:[EMAIL PROTECTED] GH> Sent: Friday 8 February 2008 1223 GH> To: Gary Hvizdak GH> Cc: [EMAIL PROTECTED] GH> Subject: HB9DOD Re: [Elecraft] K3SSB Strange behaviour GH> GH> I did not get his email address. So please pass thisalong. GH> Here is what he should do: GH> Please be sure all of your filter menu settings are correct. GH> There are a lot ofthem to check, and every one has to be properly GH> set. Each mode also requiresthe correct filter setting for several GH> of the filter setup menus. Tap the Modeand the red colored 1-5 GH> buttons to cycle through all possible filter setups. GH> See pages 43-47 of the Owner's manual. Do all necessary steps GH> for all filterlocations and all modes. GH> FLTX *must* be set to a 2.7 or 2.8kHz filter for ALL modes, GH> unless you have theAM 6kHz filter in which case FLTX is set to it GH> ONLY for AM mode and not for anyother. Do not use narrower filter GH> for CW. GH> It is essential that REF CAL and the FLx FRQ menu operations GH> be done, or theremay be excessive signal loss through the crystal GH> filters in both RX andTX. Include the negative sign in the FLx GH> FRQ menu entry forany 5-pole filter used, referenced to the hand GH> written value on the label onthe side of the crystal (such as GH> -0.89). GH> The TX Gain calibration has to be done on ALL bands, first at GH> 5w and then againat 50w if the 100w option is installed. GH> Let me know if you still have a problem after checking these things. GH> -- GH> 73, Gary AB7MY GH> = GH> [EMAIL PROTECTED] GH> Elecraft Technical Support GH> Gary Hvizdak wrote: GH> Tom, GH> GH> Sounds like a question for Elecraft. I am CC’ing their K3 supportteam. GH> GH> BTW, I assume you have updated the firmware since your K3 arrived? GH> GH> 73, GH> Gary KI4GGX GH> K3 #TBD GH> GH> GH> Tom GH> Fri Feb 8 01:13:34 EST 2008 GH> Hi all on the List. GH> GH> Yesterday i tried SSB the first time with a friend of mine, GH> because usually i am operating Data and CW. GH> GH> On Tune, CW and DATA (FSK) i have full output on all bands. GH> GH> When i switch to SSB i only have output on 40 and 20 meters. GH> GH> Max current drain is 2 Amp. on the bands where no output is available. GH> Monitor, ALC, Comp all are working and i can hear my GH> modulation over the speaker monitoring GH> Tried both antenna settings on a dummy. GH> Any suggestions?? GH> 73 de Tom HB9DOD KL5X GH> K3 #29 -- Best regards, Tommailto:[EMAIL PROTECTED] -- Der GMX SmartSurfer hilft bis zu 70% Ihrer Onlinekosten zu sparen! Ideal für Modem und ISDN: http://www.gmx.net/de/go/smartsurfer ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 or K3 Weekend Fun Project
It's here - a "Cool" new program for the RS232 user interface of your Elecraft K2 and K3. It's called ProCat (the series of CAT that I have been maintaining for various HF transceivers for over 10 years) and Cool because it's for K2 and K3. The program is meant to provide a simple visual computer interface for Elecraft transceivers, allowing frequency and mode information to be shared in both directions, from the computer database to the radio, or vice versa. There has also been a virtual analog S meter added for eye candy, and an on screen digital meter as well. The program takes a small amount of disk space, installs quickly and uninstall is as easy as removing the folder you added upon initial setup. The program is version 5.0, so it's beta with respect to the Elecraft transceivers. Give it a try this weekend and pass along any feedback you may have wb8yqj at yahoo dot com Please contact me directly so as not to clog this reflector with my personal traffic. t u 73, Don http://www.zerobeat.net/mediawiki/index.php/Procat_Cool_for_Windows ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 : standby current
Depending on the car battery, better check the self-discharge rate. For car batteries, the self-discharge rate is fairly high. It gets worse with age too. I don't have any accurate data on this, but once left a car with a new, fully charged battery at LAX for 38 days and had to call AAA to get a jump start. I had lifted the contactor before leaving the car in the lot too. So no phantom current was being consumed. The battery was fine, and lived a full life after the recharge - not defective. 73, matt, W6NIA K3 # 24, K2 # 2810 On Fri, 08 Feb 2008 22:14:23 -0600, you wrote: >Bob, > >I'm assuming you mean when it's "off." I think most car batteries >are at least 100 AH. It can run some 14,285 hours or 595 days or 1.6 >years to drain the battery entirely (if that's possible!). Anyway, I >think you'll find that, if you measure drain on your car battery with >everything turned off is probably more than this (car radio stand-by, >alarm, remote control... hum... can't think of anything else off hand). >While I haven't done it, 20 or 30 ma would not concern me. Anyone ever >measure their battery current while the car is off? > >Regards, > >kurtt > >Kurt Pawlikowski, AKA WB9FMC >The Pinrod Corporation >[EMAIL PROTECTED] >(773) 284-9500 >http://pinrod.com > >[EMAIL PROTECTED] wrote: >> Hi, >> I havemeasured the standby current of the K3 at around 7mA. >> Is this typical ? Might be aproblem for floks wo leavethe >> radio connected t oa 12 car battery for extended periods? >> >> >> Bob ZD8RH >> ___ >> Elecraft mailing list >> Post to: Elecraft@mailman.qth.net >> You must be a subscriber to post to the list. >> Subscriber Info (Addr. Change, sub, unsub etc.): >> http://mailman.qth.net/mailman/listinfo/elecraft >> >> Help: http://mailman.qth.net/subscribers.htm >> Elecraft web page: http://www.elecraft.com >> >> >___ >Elecraft mailing list >Post to: Elecraft@mailman.qth.net >You must be a subscriber to post to the list. >Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > >Help: http://mailman.qth.net/subscribers.htm >Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 : standby current
Bob, I'm assuming you mean when it's "off." I think most car batteries are at least 100 AH. It can run some 14,285 hours or 595 days or 1.6 years to drain the battery entirely (if that's possible!). Anyway, I think you'll find that, if you measure drain on your car battery with everything turned off is probably more than this (car radio stand-by, alarm, remote control... hum... can't think of anything else off hand). While I haven't done it, 20 or 30 ma would not concern me. Anyone ever measure their battery current while the car is off? Regards, kurtt Kurt Pawlikowski, AKA WB9FMC The Pinrod Corporation [EMAIL PROTECTED] (773) 284-9500 http://pinrod.com [EMAIL PROTECTED] wrote: Hi, I havemeasured the standby current of the K3 at around 7mA. Is this typical ? Might be aproblem for floks wo leavethe radio connected t oa 12 car battery for extended periods? Bob ZD8RH ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3 Transverter
Hi Phil, I'm not a transverter user, but seems like you have the XVn PWR setting to Hxx instead of Lxx. The L setting activates the Xverter IN/OUT and the H settings uses ANT 1/2. Its recommended you use the L setting to avoid transmitting high power into the transverter. >From pg. 36 XVn PWR sets the K3 power output range to be used with this transverter band. L0.01- L1.27 specifies a power level in milliwatts, which requires the KXV3 option (use the XVTR IN and OUT jacks). H00.0-H12.0 specifies power in watts, and selects the K3's main antenna jack(s) for output. 73 Greg AB7R -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Philip Theis Sent: Friday, February 08, 2008 7:54 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Transverter I am unable to get the XVTR port to work on receive (haven't gotten to transmit yet) I have the menu items set up for transverter use, and I can get input to the radio just fine into the antenna or the RX IN port, but nothing on the XVTR IN port. I'm sure it's a setup issue, any thoughts? Thanks Phil K3(352)TUF ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Transverter
I am unable to get the XVTR port to work on receive (haven't gotten to transmit yet) I have the menu items set up for transverter use, and I can get input to the radio just fine into the antenna or the RX IN port, but nothing on the XVTR IN port. I'm sure it's a setup issue, any thoughts? Thanks Phil K3(352)TUF ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K2 (ssb)
Yes. Minimizing the transmit bandwidth improves the signal/noise ratio for a given output power, whether it's done with an I.F. filter, as in the K2, or an audio filter system such as an equalizer in the K3. As the transmit bandpass is reduced, the position of your voice audio spectrum in that bandpass becomes more critical. The K2 doesn't have an audio equalizer built in. It does offer a narrow filter that is about at the minimums for good SSB intelligibility (2.1 kHz). That gives the K2 excellent SSB "punch" provided the audio bandpass is properly positioned in that bandpass. The trade-off is between overall fidelity and "punch". Narrowing the bandwidth necessarily cuts off the highs and lows in the audio spectrum, making the signal sound less "natural" but, when set up properly, it can be heard and understood in situations where a wider-bandwidth signal might not. Adjusting the BFO frequency in the K2 allows you to place your voice in the optimum spot in the filter bandpass, but the adjustment is sensitive, especially when using the narrow 2.1 KHz I.F. filter in the K2. That's why I reported earlier that I cannot do that looking at a Spectrogram display. After "roughing it in" with Spectrogram, I have to listen to the signal while adjusting the position of my audio in the passband by adjusting the BFO frequency. The K3 uses a more typical I.F. filter bandwidth (2.6 or 2.7 KHz) so the exact position of the audio spectrum in the filter bandpass is less critical, just it is in a K2 equipped with the wider filter bandwidth. In the K3 you can use the Transmit Equalizer to actually shape the audio within the filter bandpass for best sounding signal with your mic and your voice as well as roll off lows and highs to help reduce the bandwidth, if you wish. In any case, I always make the final check of my audio by recording my signal, then playing it back, since it's impossible to hear exactly what we sound like in 'real time'. Ron AC7AC -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of David Cutter Sent: Friday, February 08, 2008 11:32 AM To: G4ILO; elecraft@mailman.qth.net Subject: Re: [Elecraft] K2 (ssb) My K3 has yet to arrive, but, wouldn't this "punch" come from the voice equaliser? ie setting the voice band to suit your own voice to peak in the right place. David G3UNA > > If I wanted to be controversial (what, me?) I'd say that the K2 SSB > audio > is > better than the K3's. The K3 sounds cleaner perhaps, but the K2 is > definitely punchier, which matters when you're running QRP. > > The K2 does take a bit of setting up to get it sounding right, though. > The folks who are complaining may have been those who didn't do it > properly. > > - > Julian, G4ILO K3 s/n: 222 K2 s/n: 392 > G4ILO's Shack: www.g4ilo.com > Zerobeat Ham Forums: www.zerobeat.net/smf ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 nr. 365 arrived today
This is an assembled K3 with 6.0, 2.7 & .5 filters; also includes the general coverage RX module. All seems to work great. Ordered May 3 without deposit. Thanks to all at Elecraft, including Cody who built the rig. ..73 Steve, W6HPK K2 5039, K3 365 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 PA runaway current
The tuner has been ruled out as a cause to the problem. The K2 will show the same behavior into a dummy load either with out without the internal tuner installed. The radio itself did work for about a week with full (15W) output. My best guess is the initial problem happened as a result of excessive vibrations causing the ceramic coating to wear down enough to let RF pass between relay K12 and C4 then to ground. All inductors are ok visually and they show continuity (no open conditions) with their respective areas of the circuit. I'm starting to question the resistors such as R50 and R58(?) as being damaged in some way. Usually a resistor will open with excessive current, possibly these are shorted internally... They seemed fine with my DMM. To clarify, If I set the power to 2W (even down to 0.2W) I will see the correct value indicated on my external tuner (using the tune button). On the K2 display (and external tuner), after about 5 seconds or so, the wattage or current (depending on the readout selected) will creep up building "speed" until the "cal Cur" set-point is reached. At this point, the radio will remain in a TX switched state without RF power output until I force it back into RX with the "tune" button. 73, Damon --- On Fri 02/08, Robie Elms < [EMAIL PROTECTED] > wrote: From: Robie Elms [mailto: [EMAIL PROTECTED] To: [EMAIL PROTECTED] Date: Fri, 8 Feb 2008 10:28:39 -0600 Subject: Re: [Elecraft] K2 PA runaway current Damon,Since you say the current builds I believe you have a spuriousoscillation. I would remove the KAT2 and configure the rig so thatyou can connect the output directly to a 50 ohm dummy load. This willeliminate the possibility of a tuner problem. If you still experiencethe same type of problem I would look closely at T3 and T2 to makeshure they have the proper number of turns and are connectedcorrectly. I would also look at RFC's 8, 9 and 10 to verfiy they arethe correct value.If removing the tuner eliminates the problem, then I would firstverfiy winding and installation of T1 in the tuner.You will get more input from a number of individuals much moreexperienced with troubleshooting the K2 than I am on this e-mail list. However, perhaps my suggestions will get you moving forward again.Robie - AJ4FOn Feb 8, 2008 9:52 AM, Damon Wascom <[EMAIL PROTECTED]> wrote:>> Hello elecraft list,>> I need some help with troubleshooting my K2. I destroyed my finals (twice) due to a shorted cap (C4) in the KAT2. For troubleshooting purposes, the finals have been temporarily replaced with 2SC2078's ($0.68 vs. $6-11 for the 2SC1969's). My problem is when I TX at any band and any power setting the current starts to build until I get a Hi Cur warning.>> At this point i've: re-worked ALL solder joints on the RF board, performed signal tracing per the manual, inspected every component visually, checked the resistors and semiconductors in the TR switch and PA with my DMM (power off and voltages during TX) and pulled out my remaining hair.>> The same problem happens with the 2SC1969's in place so the substitution of the finals has been ruled out. I just don't want to fry any more (I can't tell my XYL oops, I did it again...)> She is already upset with me about this.>> Here is my K2 configuration:> K2 #: 06351 (15W), KNB2, KSB2, KAT2, KAF2, KIO2, K160RX, K60XV and KBT2.> In other words, "Fully Loaded".>> I have been conducting tests with my MFJ-969's dummy load. My belief is that the problem is in the PA but that's just a guess.>> Thanks, Damon KC5CQW>>> ___> Join Excite! - http://www.excite.com> The most personalized portal on the Web!>>> ___> Elecraft mailing list> Post to: Elecraft@mailman.qth.net> You must be a subscriber to post to the list.> Subscriber Info (Addr. Change, sub, unsub etc.):> http://mailman.qth.net/mailman/listinfo/elecraft>> Help: http://mailman.qth.net/subscribers.htm> Elecraft web page: http://www.elecraft.com> ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2
I have had my K2 with SSB, DSP, Noise Blanker, and KP100 for about a year. I had a few problems of my own making while building it, and Don/others helped get things straight. I work mainly CW. I use SSB only when that's the only mode for desirable DX; my mike is a Heil HC4 plugged in directly [no preamp]. I use the K2 to drive a 500w tube amp when that seems necessary. I have played with the filters using Spectogram on many occasions, for fun as well as for performance. I've never missed a contact because of the K2's "limitations," on CW or SSB. Now, all that said... It's a great radio. I put my FT990 on the shelf and it's gathering dust. Wouldn't go back for anything. Are there commercial transceivers that out perform it in some manner? Can you spend several $K's and out bells-and-whistles it? Sure. But for the joy of building something that performs as well as it does and that I can tinker with to my heart's content, I wouldn't trade it for anything. And, that includes the K3 for the time being. I'm still learning how to use it to its maximum capability, and I have a lot of experience in electronics. So, there are no doubt those who gripe about one thing or another with the K2. It's unfair to say, but as a clinical psychologist [cross trained from aerospace :-) ] I'm guessing that their main expertise is griping, not rigorously evaluating the K2. Does the K3 and others offer more? Perhaps. But you can't smell the solder, and for my money and fun, that's irreplaceable. I started on Heathkits in the 1950's, and allowing for the usual old geezer effect, the throw-it-away-cell-phone mentality and griping that goes along with it is a sad development that has little if anything to do with the K2's performance. ...robert At 02/07/2008 21:31, DW Holtman wrote: Hello, I have a K1, which I like. I was thinking about getting a K2 while waiting for my K3 (ordered 27 Dec). I went to the E-ham web page and read some of the reviews. There are a lot of people who really do not think too much of the K2. One or two might be some crack pot, but there are a whole bunch of not happy users. All of the magazine reviews seem to love it. Comments on why the ratings have so many unhappy K2 users? The worst are the users using the K2/100 and most complaints seem to be it's ability on SSB. I guess it was originally designed for a CW rig, so don't expect good performance on SSB?. The reports on the K1 and K3 are glowing. http://www.eham.net/reviews/detail/2357 Best, DW Holtman WB7SSN elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com Robert G. Strickland PhD ABPH - KE2WY [EMAIL PROTECTED] Syracuse, New York USA ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 : standby current
Hi, I havemeasured the standby current of the K3 at around 7mA. Is this typical ? Might be aproblem for floks wo leavethe radio connected t oa 12 car battery for extended periods? Bob ZD8RH ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 How is my Audio?
Personally I wouldn't trust any over the air comments while trying to adjust my TX audio. You must have overheard this fiasco on air! Almost everyone has a different view of how audio should sound, not to mention how they have you tuned in and their particular preferences. I really hate that heavy Bass sound so beloved of the ESSB guys.I know what I'd like to sound like and it's sharp...or if you like a tendancy to treble boost in the audio range. I know of course the debate between contest or DX audio and ragchew audio. I also think listening to yourself on a monitor receiver via phones is of limited use because of the sound colouration due to transmission through bone structure. The best I can think of is to record your recovered audio on a monitor receiver then playback via a loudspeaker and make a judgement, of course it's required that the monitor receiver used is not being overdriven in any way. This assumes correct set up of TX passband and BFO, then the listening tests as above. Any other ideas? -- 73, Deni F5VJC For a Ham Radio friendly holiday in France... Visit www.mycottageinbrittany.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3 Data-A PSK31
A feature to remember the MIC SEL source by mode is in the firmware now being tested by the field test team. 73 Greg AB7R -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Bill W5WVO Sent: Friday, February 08, 2008 10:24 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 Data-A PSK31 G4ILO wrote: > You can select the back sockets for the audio input for that mode, > with a separate mic gain setting, so you don't have to keep swapping > the mic cable over. At the moment you have to change the mic input > manually, but I think one of the things on the list is that it will > remember the setting. > > You can also have different filter settings for data, e.g. a different > center frequency. This is great. The TS-2000, which is widely used by WSJT enthusiasts on VHF, doesn't have this capability, as it has no special "DATA" mode or any other way of memorizing all these configurational differences. You have to manually change all this stuff ( six or so settings) every time you go from WSJT to SSB to WSJT again. I'm really looking forward to getting my K3 for so MANY reasons! Now here is another one I didn't know about... April can't come soon enough! Bill W5WVO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com No virus found in this incoming message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.21/1266 - Release Date: 2/8/2008 10:06 AM No virus found in this outgoing message. Checked by AVG Free Edition. Version: 7.5.516 / Virus Database: 269.19.21/1266 - Release Date: 2/8/2008 10:06 AM ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 - AFSK RTTY
If you don't do AFSK RTTY with a K2, you won't be interested in this. Getting ready for WPX RTTY, it has taken me two days to solve a problem I don't remember ever having before ... the solution might help someone else. My RTTY setup is minimalist: Sound card line-out goes to the mic connector. Headphone out goes to a splitter cable. One side goes to sound card line-in. The other side goes to my cans. I have RTTY enabled in the K2 and did CAL FIL on the four filter settings. The one I use the most is 400 Hz. VOX on at 0.2, compression at 1:1 WriteLog with MMTTY plug-in. I run with MARK at 1200 Hz, 2125 is on the edge of the filter and besides I can't hear anything that high. PROBLEM: K2 clicks into and out of TX periodically. Sometimes just once in awhile, sometimes repetitively. No sign of power out on the wattmeter or my scope, it just pulses into TX and back to RX. REASON: Computer is putting out inaudible low-level very short clicks on line-out triggering the VOX sporadically. SOLUTION [just because it is simple doesn't also mean it was easy to find :-) ]: Turn down the mic gain to 1 and adjust line-out on the laptop for the right input level. The noise from the laptop appears to be related to where the switching power supply is, and far from the laptop seems to be best. GL to all in the contest, less than 2 hrs to go. 73, Fred K6DGW - Northern California Contest Club - CU in the 2008 Cal QSO Party 4-5 Oct 08 - www.cqp.org "The easiest way to find something in your house that you've lost is to buy a replacement." ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] CQ WW WPX RTTY
The CQ RTTY contest starts in a couple of hours and runs Sat/Sun GMT. This is a great opportunity for all those new K3's to strut their digital stuff. I won't be hugely active, just exercising the K3 and the rest of the station on a mode that is (re-) new to me. Hope to hear lots of you on. 73, /Rick N6XI ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Drake R-4C with K2
Wolfgang One way is shown on my web site: http://www.astromag.co.uk/k2/K2externalRX.pdf 73 Dave, G4AON -- I would like to connect my trusty R-4C as second receiver to the K2 and am looking for the best way to install a rx-in and a rx-out jack (as in some Icom transceivers). Together with a 3 db splitter it should be possible to use both receivers at the same time. Has anybody on the list done that before? Any suggestions are welcome. 73's Wolfgang DK7CY ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 (ssb)
Hello, First let me state, I was not trying to run down the K2. Just curious about the reviews. I own a K1 and I'm on the waiting list for a K3. I would not sit around and wait months for something if I did not think it is the best available. Thank to most that responded both on and off list. The general feeling is if someone is not happy with the SSB on the K2, it is most likely adjustment, not the rig. Great answers, I learned a lot about the K2. Best, DW Holtman WB7SSN ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K-3 has just arrived
Serial number 367 received, ordered May 15th, no deposit, arrived Feb 8th de Jim KE4WY. UPS gave me a scare. The guy pulled up and was spending a lot of time in the truck so I walked up to his truck and he said, "Looks like it's not on the truck". Since it is Friday lots of fireworks & such were going off in my head plus what I was thinking was X-Rated. About 15 minutes later another UPS truck pulled up & dropped the K-3 off. He covers another area & it was put on the wrong truck. All is good. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Drake R-4C with K2
I would like to connect my trusty R-4C as second receiver to the K2 and am looking for the best way to install a rx-in and a rx-out jack (as in some Icom transceivers). Together with a 3 db splitter it should be possible to use both receivers at the same time. Has anybody on the list done that before? Any suggestions are welcome. 73's Wolfgang DK7CY ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3: just how wide is it?
I ordered the option a few days ago, Brett, but haven't received it yet. 73, Larry N8LP Brett Howard wrote: Very cool!! Now I'd be interested to see what those measurements look like with the general coverage receive board installed to see how much it truly doesn't affect performance. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Smith Sent: Friday, February 08, 2008 6:01 AM To: [EMAIL PROTECTED] Cc: Larry Phipps; elecraft@mailman.qth.net Subject: Re: [Elecraft] K3: just how wide is it? It's probably too early in the morning for Larry, N8LP, to be up, so I'll mention that he has measured K3 RF filter bandwidth data posted at http://www.telepostinc.com/K3_Stuff.html. Jack K8ZOA [EMAIL PROTECTED] wrote: Hi Doug, OK...just how wide is the bandwidth when "limited by the K3's BP filters? For what it's worth... A quick and very dirty attempt to "simulate" one of the filters using Elsie 2.12 (free version) gave me in the 10m band filter a -3dB width of roughly 2.7MHz, after some tuning -> 40pF trimmers to 32pF. I assumed a Q of 1000 for the capacitors and 200 for the inductors. Maybe using Elsie or the AADE filter designer might help give you a rough idea, if you can't do simulations with Spice. vy 73 de toby ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 #355 Status
#355 is now on the air with 10W. Many thanks to Eric and Wayne and the Engineering staff, those involved in the manufacturing of it and the logistics folks who all help. 'Tis well documented and went together very nicely. Chuck Boblenz AD6GI **Biggest Grammy Award surprises of all time on AOL Music. (http://music.aol.com/grammys/pictures/never-won-a-grammy?NCID=aolcmp00300025 48) ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 (ssb)
My K3 has yet to arrive, but, wouldn't this "punch" come from the voice equaliser? ie setting the voice band to suit your own voice to peak in the right place. David G3UNA If I wanted to be controversial (what, me?) I'd say that the K2 SSB audio is better than the K3's. The K3 sounds cleaner perhaps, but the K2 is definitely punchier, which matters when you're running QRP. The K2 does take a bit of setting up to get it sounding right, though. The folks who are complaining may have been those who didn't do it properly. - Julian, G4ILO K3 s/n: 222 K2 s/n: 392 G4ILO's Shack: www.g4ilo.com Zerobeat Ham Forums: www.zerobeat.net/smf ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3: just how wide is it?
Very cool!! Now I'd be interested to see what those measurements look like with the general coverage receive board installed to see how much it truly doesn't affect performance. -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Jack Smith Sent: Friday, February 08, 2008 6:01 AM To: [EMAIL PROTECTED] Cc: Larry Phipps; elecraft@mailman.qth.net Subject: Re: [Elecraft] K3: just how wide is it? It's probably too early in the morning for Larry, N8LP, to be up, so I'll mention that he has measured K3 RF filter bandwidth data posted at http://www.telepostinc.com/K3_Stuff.html. Jack K8ZOA [EMAIL PROTECTED] wrote: > Hi Doug, > >> OK...just how wide is the bandwidth when "limited by the K3's BP >> filters? > > For what it's worth... > > A quick and very dirty attempt to "simulate" one of the filters using > Elsie 2.12 (free version) gave me in the 10m band filter a -3dB width > of roughly 2.7MHz, after some tuning -> 40pF trimmers to 32pF. I > assumed a Q of 1000 for the capacitors and 200 for the inductors. > > Maybe using Elsie or the AADE filter designer might help give you a > rough idea, if you can't do simulations with Spice. > > vy 73 de toby > > ___ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Data-A PSK31
G4ILO wrote: You can select the back sockets for the audio input for that mode, with a separate mic gain setting, so you don't have to keep swapping the mic cable over. At the moment you have to change the mic input manually, but I think one of the things on the list is that it will remember the setting. You can also have different filter settings for data, e.g. a different center frequency. This is great. The TS-2000, which is widely used by WSJT enthusiasts on VHF, doesn't have this capability, as it has no special "DATA" mode or any other way of memorizing all these configurational differences. You have to manually change all this stuff ( six or so settings) every time you go from WSJT to SSB to WSJT again. I'm really looking forward to getting my K3 for so MANY reasons! Now here is another one I didn't know about... April can't come soon enough! Bill W5WVO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 (ssb)
Tim O'Rourke wrote: > > I have had opposite experience. I use mine (Serial 8XX) on both ssb and > cw. I have had excellent audio reports and busted lots of pileups with > 5-10 watts ssb due to excellent audio quality. I do have a small preamp on > the back of the mic connector and I use all Heil mics. > I believe a K2 properly set up has no compromises on SSB. > Tim O'Rourke W4YN > If I wanted to be controversial (what, me?) I'd say that the K2 SSB audio is better than the K3's. The K3 sounds cleaner perhaps, but the K2 is definitely punchier, which matters when you're running QRP. The K2 does take a bit of setting up to get it sounding right, though. The folks who are complaining may have been those who didn't do it properly. - Julian, G4ILO K3 s/n: 222 K2 s/n: 392 G4ILO's Shack: www.g4ilo.com Zerobeat Ham Forums: www.zerobeat.net/smf -- View this message in context: http://www.nabble.com/Re%3A-K2-%28ssb%29-tp15356527p15361023.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Data-A PSK31
Trevor Smithers wrote: > > What are the benefits of using Data-A mode for psk31 as opposed to > standard USB. > The manual p29, mentions that DATA mode offers several benefits not > available in SSB modes however > other than automatically setting CMP to 0, I can't see much else > happening. > Does Data-A route the signal differently to standard SSB for instance. > > What am I missing? > You can select the back sockets for the audio input for that mode, with a separate mic gain setting, so you don't have to keep swapping the mic cable over. At the moment you have to change the mic input manually, but I think one of the things on the list is that it will remember the setting. You can also have different filter settings for data, e.g. a different center frequency. - Julian, G4ILO K3 s/n: 222 K2 s/n: 392 G4ILO's Shack: www.g4ilo.com Zerobeat Ham Forums: www.zerobeat.net/smf -- View this message in context: http://www.nabble.com/K3-Data-A--PSK31-tp15352360p15360946.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] re: K2
I agree that the listening tests are essential. My approach without using Spectrogram was to measure the frequency response of the KSB2 and transmitter audio circuits combined, without compression, to get a rough idea as to what the BFO frequency should be. I then 'tweaked' the BFO frequency for 'good sound' using a direct conversion receiver with wide AF filter together with an audio recorder, while speaking into a HC-5 mic element part of a Heil ProSet Plus at different compression settings. The final 'tweak' of BFO frequency was done with the compression at the setting I use. Reports have been good using the stock 2.1 kHz filter. BTW Ron, my K2/100 appears to be a 'Monday morning' version as a HC-5 in boom mike will drive it easily to full rated pep without an external audio preamp, but I do not use VOX with the K2. 73, Geoff GM4ESD Original Message from: Ron D'Eau Claire <[EMAIL PROTECTED]> I have found it impossible to reliably set my BFO frequency in the proper place for SSB operation using only Spectrogram. Spectrogram is invaluable for the first adjustment. I can get close with it, but to have audio that I like, it's necessary to do the last step recommended in the KSB2 manual: make the fine adjustments listening to my own signal. Not the "monitor", but my actual signal on an auxiliary receiver. Either that or work a buddy I trust and do the final adjustment "on the air". I found that the adjustment is much more critical using the stock 2.1 kHz SSB filter bandwidth. While that bandwidth is ideal for maximum "talk power" when signals are not strong, if the passband is just a little too low, the audio sounds muffled. If it is too high the audio sounds "pinched", missing important low frequencies. I later opened up the bandwidth to 2.6 kHz bandwidth with the SSBCAPKIT. That made the BFO alignment a lot less critical, but I still found that actual listening tests for the final adjustments were essential. Ron AC7AC ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2
Dear Mr. Holtman. The K2 for ssb use is a kit rig that isn't finished when last component is soldered. It take some tweeking of filters and on air play to fineadjust this beauty. Don's approach is a good start. The mic is of high importance. Myself wasn't to happy for a long time and I didn't bother to put my review on eham before I have played the rig for some time. I got normal reports on standard BW with MH2 mic. No wow! reports , but OK. I then decided to make the change to 2,6 khz bw and had to take my playtime all over again. For me that was the fun part. After some play the reports changed. It now was : " Is that a K2? I wouldn't have guessed! You sound like any other rig and I can hear the heil element. " The heil has a special sound that is OK for casual ragchew and great for DX. I've heard some cheap mic on air and that can work both ways , but the ones I've heard isn't good. Cheap PC headphones and so one. And don't throw away those qrp reviews. SSB sound the same with or without the KPA100 so you should take them seriously. But one thing I think we can agree on. The K2 will never be a substitute for K3. ( Think that's one of the reasons they designed the K3). But when propperly set up , you will make the qso and not one will ask you what the heck your using. Take in mind that many reviews on eham are premature. Both the good and the bad ones. Tom LA1PHA K2/100 3829 2,6khz fully loaded. - Original Message - From: "DW Holtman" <[EMAIL PROTECTED]> To: Sent: Friday, February 08, 2008 5:31 AM Subject: [Elecraft] K2 Hello, I have a K1, which I like. I was thinking about getting a K2 while waiting for my K3 (ordered 27 Dec). I went to the E-ham web page and read some of the reviews. There are a lot of people who really do not think too much of the K2. One or two might be some crack pot, but there are a whole bunch of not happy users. All of the magazine reviews seem to love it. -- Jeg bruker gratisversjonen av SPAMfighter for privatbrukere. Den har fjernet 316 søppelpostmeldinger til nå. Betalende brukere har ikke denne meldingen i e-postene sine. Få tak i SPAMfighter gratis her: http://www.spamfighter.com/lno ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K2
This is a reply to the original message, but since the K2 is a kit, there are lots of ways to screw it up. And you know how it's never the user's fault when there are problems. Just my guess. My K2 worked like crap because I broke RFC15 (and I have lots of building experience) but I was able to debug the problem with all the test equipment I had available. I'm sure if I just went bulldozing ahead without figuring out what was wrong, I would have thought the K2 was at fault. (It was ALMOST working.) On Fri, 8 Feb 2008, Darwin, Keith wrote: If you read the reviews, mine is the 2nd from the top. Not a lot of reviews in the last year or so. I stated there what I think of the rig so I won't repeat it here. The K2 is not a typical rig and those who expect a typical rig would do better with an Ikensu. K2 really optimizes RX performance which apparently, some don't value as much as "the ability to sweep the VFO during SWR checks". - Keith N1AS - - K2 5411.ssb.100 - - K3 Wave 3 - -Original Message- I was thinking about getting a K2 ... I went to the E-ham web page and read some of the reviews. There are a lot of people who really do not think too much of the K2. Comments on why the ratings have so many unhappy K2 users? Best, DW Holtman ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- Hisashi T Fujinaka - [EMAIL PROTECTED] BSEE(6/86) + BSChem(3/95) + BAEnglish(8/95) + MSCS(8/03) + $2.50 = latte ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] re: K2
I have found it impossible to reliably set my BFO frequency in the proper place for SSB operation using only Spectrogram. Spectrogram is invaluable for the first adjustment. I can get close with it, but to have audio that I like, it's necessary to do the last step recommended in the KSB2 manual: make the fine adjustments listening to my own signal. Not the "monitor", but my actual signal on an auxiliary receiver. Either that or work a buddy I trust and do the final adjustment "on the air". I found that the adjustment is much more critical using the stock 2.1 kHz SSB filter bandwidth. While that bandwidth is ideal for maximum "talk power" when signals are not strong, if the passband is just a little too low, the audio sounds muffled. If it is too high the audio sounds "pinched", missing important low frequencies. I later opened up the bandwidth to 2.6 kHz bandwidth with the SSBCAPKIT. That made the BFO alignment a lot less critical, but I still found that actual listening tests for the final adjustments were essential. Ron AC7AC -Original Message- It might be that in addition to low ratings caused by improper alignment, some of the low ratings are from people who push the ALC too hard when using SSB. One bar just flickering is plenty enough for my K2/100 #3255 which has none of the 'official' modifications installed. 73, Geoff GM4ESD . DW Holtman <[EMAIL PROTECTED]> wrote on Friday, February 08, 2008 at 2:29 PM > Hello, > > If you would have read the rest of the E-Mail, I commented that the > majority of the low ratings were for the K2/100 dealing with SSB. That > was my question, not the reviews on the K2 QRP version of E-Ham. > > Best, > DW Holtman > WB7SSN ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] re: K2
Gee DW - Those who have said in their review that they are unhappy have also said why they are unhappy. If you want more information on their evaluation, why not just ask them? Seems pretty simple. Very few on the reflector are mind readers! '73 -- Don N4HH Hello, If you would have read the rest of the E-Mail, I commented that the majority of the low ratings were for the K2/100 dealing with SSB. That was my question, not the reviews on the K2 QRP version of E-Ham. Best, DW Holtman WB7SSN - Original Message - From: "ni0c" <[EMAIL PROTECTED]> To: Sent: Friday, February 08, 2008 7:15 AM Subject: [Elecraft] re: K2 According to WB7SSN: "I went to the E-ham web page and read some of the reviews. There are a lot of people who really do not think too much of the K2. One or two might be some crack pot, but there are a whole bunch of not happy users. All of the magazine reviews seem to love it. Comments on why the ratings have so many unhappy K2 users? I went to the eHam site, too. Here's what I observed. The K2 has reviews in two categories under Transceivers, HF. The category "K2" had 127 reviews, with an average rating of 4.9/5.0. My review is one of those 127, currently on page 2. The category, "K2/100" had 73 reviews with an average rating of 4.7/5.0. Under the category "QRP radios," there are 75 more reviews of the K2, with an average score of 4.9/5.0. Those numbers tell me there are a lot of very happy owners/builders of the K2, and very few "unhappy K2 users." As far as the reasons that the few are less than pleased, why not simply read the reviews for yourself? Just cut and paste all reviews in those three places that gave the K2 a less than perfect score of five. You won't have much reading to do. 73, Chuck Guenther NI0C K2/10 s/n 5853 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2 PA runaway current
Damon, First, remove the KAT2 and operate the K2 into a good 50 ohm dummy load, and use some valid method of monitoring the actual power output. If the same thing occurs, than look in the K2, but if it behaves properly, look at the KAT2. If you have a K2 problem, How much is the power output? You say the current builds up - over what time period? What happens if you set the requested power to about 2 watts? Do you still get the HI-Cur and how much power is actually being produced? If it is a KAT2 problem, what happens if you operate at 2 watts with the ATU in CALP and a dummy load connected to the ANT1 output? Have you nulled and calibrated the KAT2 wattmeter for correct power output indication? If the K2 does not see the power output level being sent back from the KAT2, it will increase power to the maximum in an attempt to obtain the requested power output level so the KAT2 wattmeter must be calibrated for proper operation. 73, Don W3FPR Damon Wascom wrote: Hello elecraft list, I need some help with troubleshooting my K2. I destroyed my finals (twice) due to a shorted cap (C4) in the KAT2. For troubleshooting purposes, the finals have been temporarily replaced with 2SC2078's ($0.68 vs. $6-11 for the 2SC1969's). My problem is when I TX at any band and any power setting the current starts to build until I get a Hi Cur warning. At this point i've: re-worked ALL solder joints on the RF board, performed signal tracing per the manual, inspected every component visually, checked the resistors and semiconductors in the TR switch and PA with my DMM (power off and voltages during TX) and pulled out my remaining hair. The same problem happens with the 2SC1969's in place so the substitution of the finals has been ruled out. I just don't want to fry any more (I can't tell my XYL oops, I did it again...) She is already upset with me about this. Here is my K2 configuration: K2 #: 06351 (15W), KNB2, KSB2, KAT2, KAF2, KIO2, K160RX, K60XV and KBT2. In other words, "Fully Loaded". I have been conducting tests with my MFJ-969's dummy load. My belief is that the problem is in the PA but that's just a guess. Thanks, Damon KC5CQW ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 PA runaway current
Hello elecraft list, I need some help with troubleshooting my K2. I destroyed my finals (twice) due to a shorted cap (C4) in the KAT2. For troubleshooting purposes, the finals have been temporarily replaced with 2SC2078's ($0.68 vs. $6-11 for the 2SC1969's). My problem is when I TX at any band and any power setting the current starts to build until I get a Hi Cur warning. At this point i've: re-worked ALL solder joints on the RF board, performed signal tracing per the manual, inspected every component visually, checked the resistors and semiconductors in the TR switch and PA with my DMM (power off and voltages during TX) and pulled out my remaining hair. The same problem happens with the 2SC1969's in place so the substitution of the finals has been ruled out. I just don't want to fry any more (I can't tell my XYL oops, I did it again...) She is already upset with me about this. Here is my K2 configuration: K2 #: 06351 (15W), KNB2, KSB2, KAT2, KAF2, KIO2, K160RX, K60XV and KBT2. In other words, "Fully Loaded". I have been conducting tests with my MFJ-969's dummy load. My belief is that the problem is in the PA but that's just a guess. Thanks, Damon KC5CQW ___ Join Excite! - http://www.excite.com The most personalized portal on the Web! ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] re: K2
It might be that in addition to low ratings caused by improper alignment, some of the low ratings are from people who push the ALC too hard when using SSB. One bar just flickering is plenty enough for my K2/100 #3255 which has none of the 'official' modifications installed. 73, Geoff GM4ESD . DW Holtman <[EMAIL PROTECTED]> wrote on Friday, February 08, 2008 at 2:29 PM Hello, If you would have read the rest of the E-Mail, I commented that the majority of the low ratings were for the K2/100 dealing with SSB. That was my question, not the reviews on the K2 QRP version of E-Ham. Best, DW Holtman WB7SSN ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K2
DW: As one of the Elecraft list members told me some years back, the few disgruntled users are much more likely to post to eham than the many happy ones. It does seem to be a watering hole for people whose favorite sound is that of their own voice raised in complaint. With over 5000 rigs out there, there is no doubt a handfull of users who are not happy. I have had a K2 for two years. In my 44 years of hamming, it is by far the best rig I ever used. I cannot comment on SSB; I'm strictly CW, and do not have (nor need) the SSB module. 73, Steve ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] N8LP's LP-PAN and the K3
In case you haven't looked at N8LP's site lately, check out his progress on the LP-PAN for the K3 wideband IF output. This is really looking great! Nice work Larry! 73, Bill W4ZV Here is an expanded list of features... * Optimized for K3 * Up to 192 kHz display on PC, sound card dependent * 8.215 MHz center frequency for centered display * Switching quadrature detector for 100dB dynamic range * -130dBm noise floor * Buffer amp with very high LO isolation. * Fully isolated inputs / outputs with high quality audio xfmrs * Works with many SDR programs... custom application planned * Point and click frequency control with PowerSDR and HRD * Shielded metal enclosure in development * Will be available for other common IF frequencies in the HF region. * Image rejection of 40-50dB with PowerSDR, up to 70dB with VE3NEA's Rocky software. Note: Specifications are dependent on sound card. Measurement details are included in the following discussion. More info and photos here: http://telepostinc.com/K3pan.html -- View this message in context: http://www.nabble.com/N8LP%27s-LP-PAN-and-the-K3-tp15357598p15357598.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 SSB Strange Behaviour
Hi Guys I found the mistake.. I have a Microham Keyer between the mike and K3 Somehow it messed up my settings so that i have output on 40 and 20 and if i switch to DATA A i have output on the other bands... So no K3 fault my fault not looking into the routing... Why it changed dont know let the List know if I foung it... Thanks for responding to my call.. 73 de Tom HB9DOD KL5X K3 #29 -- GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] (Elecraft) K2
Note what Don Wilhelm W3FPR is telling you about the SSB performance of the K2, it is excellent in my opinion. I use SSB exclusivley primarily to work DX and almost always get the DX station on my first call, so something must be right with the audio in the K2. Do as he suggests, properly set up the filters and use an MH2 or MD2 microphone, I use the later. The 100 watt KPA100 of course helps too. Go for it! 73, Bob VE3XM K2/100 S/N 04031 K2 S/N 04575 K3/100 S/N ? waiting for immenent delivery ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] Re: K2 (ssb)
I have had opposite experience. I use mine (Serial 8XX) on both ssb and cw. I have had excellent audio reports and busted lots of pileups with 5-10 watts ssb due to excellent audio quality. I do have a small preamp on the back of the mic connector and I use all Heil mics. I believe a K2 properly set up has no compromises on SSB. Tim O'Rourke W4YN Message: 33 Date: Thu, 7 Feb 2008 21:31:27 -0700 From: "DW Holtman" <[EMAIL PROTECTED]> Subject: [Elecraft] K2 To: Message-ID: <[EMAIL PROTECTED]> Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=original Hello, I have a K1, which I like. I was thinking about getting a K2 while waiting for my K3 (ordered 27 Dec). I went to the E-ham web page and read some of the reviews. There are a lot of people who really do not think too much of the K2. One or two might be some crack pot, but there are a whole bunch of not happy users. All of the magazine reviews seem to love it. Comments on why the ratings have so many unhappy K2 users? The worst are the users using the K2/100 and most complaints seem to be it's ability on SSB. I guess it was originally designed for a CW rig, so don't expect good performance on SSB?. The reports on the K1 and K3 are glowing. Tim O'Rourke [EMAIL PROTECTED] Low Power Amateur Radio Rocks Member of Flying Pigs,ARCI,GQRP,RSGB,ARRL Life Member NHRA Life Member ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3 Rx Antenna Isolation
Hi Barry, Yes it's on receive. It's more than leakage, more like both antennas are connected during receive. Ed - Original Message - From: "Barry N1EU" <[EMAIL PROTECTED]> To: Sent: Friday, February 08, 2008 6:29 AM Subject: RE: [Elecraft] K3 Rx Antenna Isolation Perhaps Ed will clarify, but my take is that Ed's post is a different issue. I believe he is saying that while he's in RECEIVE mode with the RX ANT selected, there's leakage of the receive signal on the transmit antenna feedline into his receiver - poor isolation in the receive antenna selection. Personally, I haven't seen this but I haven't listened specifically for it either. 73, Barry N1EU Gary W. Hvizdak wrote: On Fri 8 Feb 2008 at 01:07:35 EST, Ed Gilliland (W5TM) wrote .. I'm have poor isolation between the transmit antenna (ANT1) and my Beverage (RX ANT IN). I have to switch to ANT2 to get rid of the noise from the transmit antenna. As new as I am to the K3 I may have an option set wrong. -- Ed, Wayne's recent post entitled "KXV3: (1) RX ANT signal level during TX; (2) spectra at buffered IF output" may address your question. You can find his post in the online Reflector archives at ... http://mailman.qth.net/pipermail/elecraft/2008-February/082024.html 73, Gary KI4GGX ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com -- View this message in context: http://www.nabble.com/K3-Rx-Antenna-Isolation-tp15350020p15354381.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] re: K2
Hello, If you would have read the rest of the E-Mail, I commented that the majority of the low ratings were for the K2/100 dealing with SSB. That was my question, not the reviews on the K2 QRP version of E-Ham. Best, DW Holtman WB7SSN - Original Message - From: "ni0c" <[EMAIL PROTECTED]> To: Sent: Friday, February 08, 2008 7:15 AM Subject: [Elecraft] re: K2 According to WB7SSN: "I went to the E-ham web page and read some of the reviews. There are a lot of people who really do not think too much of the K2. One or two might be some crack pot, but there are a whole bunch of not happy users. All of the magazine reviews seem to love it. Comments on why the ratings have so many unhappy K2 users? I went to the eHam site, too. Here's what I observed. The K2 has reviews in two categories under Transceivers, HF. The category "K2" had 127 reviews, with an average rating of 4.9/5.0. My review is one of those 127, currently on page 2. The category, "K2/100" had 73 reviews with an average rating of 4.7/5.0. Under the category "QRP radios," there are 75 more reviews of the K2, with an average score of 4.9/5.0. Those numbers tell me there are a lot of very happy owners/builders of the K2, and very few "unhappy K2 users." As far as the reasons that the few are less than pleased, why not simply read the reviews for yourself? Just cut and paste all reviews in those three places that gave the K2 a less than perfect score of five. You won't have much reading to do. 73, Chuck Guenther NI0C K2/10 s/n 5853 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3: just how wide is it?
Hi Jack. I've been up for awhile ;-) For those who are interested, the data was taken from the Rx antenna input to the IF output. The scales are either 5dB or 10dB/ vertical division, as indicated in the legend at the top of each chart. The markers are at roughly the -3dB points. The behavior of the 40m filter is caused by the 8.215MHz notch filter. 73, Larry N8LP Jack Smith wrote: It's probably too early in the morning for Larry, N8LP, to be up, so I'll mention that he has measured K3 RF filter bandwidth data posted at http://www.telepostinc.com/K3_Stuff.html. Jack K8ZOA [EMAIL PROTECTED] wrote: Hi Doug, OK...just how wide is the bandwidth when "limited by the K3's BP filters? For what it's worth... A quick and very dirty attempt to "simulate" one of the filters using Elsie 2.12 (free version) gave me in the 10m band filter a -3dB width of roughly 2.7MHz, after some tuning -> 40pF trimmers to 32pF. I assumed a Q of 1000 for the capacitors and 200 for the inductors. Maybe using Elsie or the AADE filter designer might help give you a rough idea, if you can't do simulations with Spice. vy 73 de toby ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] re: K2
According to WB7SSN: "I went to the E-ham web page and read some of the reviews. There are a lot of people who really do not think too much of the K2. One or two might be some crack pot, but there are a whole bunch of not happy users. All of the magazine reviews seem to love it. Comments on why the ratings have so many unhappy K2 users? I went to the eHam site, too. Here's what I observed. The K2 has reviews in two categories under Transceivers, HF. The category "K2" had 127 reviews, with an average rating of 4.9/5.0. My review is one of those 127, currently on page 2. The category, "K2/100" had 73 reviews with an average rating of 4.7/5.0. Under the category "QRP radios," there are 75 more reviews of the K2, with an average score of 4.9/5.0. Those numbers tell me there are a lot of very happy owners/builders of the K2, and very few "unhappy K2 users." As far as the reasons that the few are less than pleased, why not simply read the reviews for yourself? Just cut and paste all reviews in those three places that gave the K2 a less than perfect score of five. You won't have much reading to do. 73, Chuck Guenther NI0C K2/10 s/n 5853 ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3: just how wide is it?
DOUGLAS ZWIEBEL wrote: > > Recently, they guys at Aptos said: > > [snip] > The pick-off point for the K3's buffered I.F. output -- right at the > output of the 1st mixer's post-amp stage -- was selected to give the > widest possible bandwidth. Thus there is no filtering of any kind from > here to the BNC jack on the KXV3. This creates the opportunity to do > *very* wide spectral sweeps, if required -- limited only by the > bandwidth of the K3's band-pass filters. > [snip] > > OK...just how wide is the bandwidth when "limited by the K3's BP filters? > > >From a previous post by Eric: The K3 IF output is derived before the roofing IF filters and its bandwidth is only limited by the width of the front end bandpass LC filters, which are typically several hundred kHz wider than the ham band you are operating on. 73, Eric WA6HHQ -- View this message in context: http://www.nabble.com/K3%3A-just-how-wide-is-it--tp15354596p15355747.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3: just how wide is it?
It's probably too early in the morning for Larry, N8LP, to be up, so I'll mention that he has measured K3 RF filter bandwidth data posted at http://www.telepostinc.com/K3_Stuff.html. Jack K8ZOA [EMAIL PROTECTED] wrote: Hi Doug, OK...just how wide is the bandwidth when "limited by the K3's BP filters? For what it's worth... A quick and very dirty attempt to "simulate" one of the filters using Elsie 2.12 (free version) gave me in the 10m band filter a -3dB width of roughly 2.7MHz, after some tuning -> 40pF trimmers to 32pF. I assumed a Q of 1000 for the capacitors and 200 for the inductors. Maybe using Elsie or the AADE filter designer might help give you a rough idea, if you can't do simulations with Spice. vy 73 de toby ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K2 reviews on eham
I agree. Most of the reviews are from SSB operators, and the complaints on filters are probably because they are not adjusted correctly. The problems listed are alignment issues. I use my K2 with a Heil HM-5, and get great audio reports with the standard SSB bandwidth. Mike AI4NS ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
Re: [Elecraft] K3: just how wide is it?
Hi Doug, OK...just how wide is the bandwidth when "limited by the K3's BP filters? For what it's worth... A quick and very dirty attempt to "simulate" one of the filters using Elsie 2.12 (free version) gave me in the 10m band filter a -3dB width of roughly 2.7MHz, after some tuning -> 40pF trimmers to 32pF. I assumed a Q of 1000 for the capacitors and 200 for the inductors. Maybe using Elsie or the AADE filter designer might help give you a rough idea, if you can't do simulations with Spice. vy 73 de toby ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K2
If you read the reviews, mine is the 2nd from the top. Not a lot of reviews in the last year or so. I stated there what I think of the rig so I won't repeat it here. The K2 is not a typical rig and those who expect a typical rig would do better with an Ikensu. K2 really optimizes RX performance which apparently, some don't value as much as "the ability to sweep the VFO during SWR checks". - Keith N1AS - - K2 5411.ssb.100 - - K3 Wave 3 - -Original Message- I was thinking about getting a K2 ... I went to the E-ham web page and read some of the reviews. There are a lot of people who really do not think too much of the K2. Comments on why the ratings have so many unhappy K2 users? Best, DW Holtman ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3: just how wide is it?
Recently, they guys at Aptos said: [snip] The pick-off point for the K3's buffered I.F. output -- right at the output of the 1st mixer's post-amp stage -- was selected to give the widest possible bandwidth. Thus there is no filtering of any kind from here to the BNC jack on the KXV3. This creates the opportunity to do *very* wide spectral sweeps, if required -- limited only by the bandwidth of the K3's band-pass filters. [snip] OK...just how wide is the bandwidth when "limited by the K3's BP filters? Thanks, de Doug KR2Q ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
RE: [Elecraft] K3 Rx Antenna Isolation
Perhaps Ed will clarify, but my take is that Ed's post is a different issue. I believe he is saying that while he's in RECEIVE mode with the RX ANT selected, there's leakage of the receive signal on the transmit antenna feedline into his receiver - poor isolation in the receive antenna selection. Personally, I haven't seen this but I haven't listened specifically for it either. 73, Barry N1EU Gary W. Hvizdak wrote: > > On Fri 8 Feb 2008 at 01:07:35 EST, Ed Gilliland (W5TM) wrote .. > > I'm have poor isolation between the transmit antenna (ANT1) and my > Beverage > (RX ANT IN). I have to switch to ANT2 to get rid of the noise from the > transmit antenna. As new as I am to the K3 I may have an option set > wrong. > > -- > > Ed, > > Wayne's recent post entitled "KXV3: (1) RX ANT signal level during TX; > (2) spectra at buffered IF output" may address your question. You can > find his post in the online Reflector archives at ... > http://mailman.qth.net/pipermail/elecraft/2008-February/082024.html > > 73, > Gary KI4GGX > > ___ > Elecraft mailing list > Post to: Elecraft@mailman.qth.net > You must be a subscriber to post to the list. > Subscriber Info (Addr. Change, sub, unsub etc.): > http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/subscribers.htm > Elecraft web page: http://www.elecraft.com > > -- View this message in context: http://www.nabble.com/K3-Rx-Antenna-Isolation-tp15350020p15354381.html Sent from the Elecraft mailing list archive at Nabble.com. ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
[Elecraft] K3 Data-A PSK31
What are the benefits of using Data-A mode for psk31 as opposed to standard USB. The manual p29, mentions that DATA mode offers several benefits not available in SSB modes however other than automatically setting CMP to 0, I can't see much else happening. Does Data-A route the signal differently to standard SSB for instance. What am I missing? Rig: K3 Interface: Microham DigiKeyer Software: HRD/DM780 73 to all Trevor G0KTN ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm Elecraft web page: http://www.elecraft.com
