[Elecraft] K2 and a built in SWR meter.
Hi, Summary: The K2/100 does have a built in SWR meter. (Via the tune button) The K2 (standard version) can be addapted to have an SWR meter or it can be used with options (ATUs...) to show the SWR. Thank you for all the replies, I must have had about 50 replies in about an hour, with some very interesting additional information.. wow what back up. Thank you everybody. Robert F5VHN __ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html ___ 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 Headphone jack/front panel gap
Ron, Thank you for the detailed reply. I have shortened your response below, and inserted my comments. Ron D'Eau Claire wrote: Tue, 29 Apr 2008 13:28:14 -0700 I've only received sporadic reports of this happening, and *nothing* after suggesting checking the fit of the mic connector, which led me to believe the problem was fixed as suggested My mic connector does clear the hole, as in Fig. 37. ... Among the returns they have noticed several that did not have the split ring lock washer between the standoff and the pc board as shown in Figure 34 of the assembly manual. Instead the builder put the washer under the head of the screw because that’s where one might expect to put a lock washer, but that is *not* where it goes. ... I'm certain I did it as described. In this case it is part of the total spacer provided by the standoff and must go between the standoff and the pc board. That mistake actually helps the PHONES washer fit more tightly by moving everything forward toward the sheet metal, but can result in a skewed VFO A shaft since the connector 'bottoms out' in the jack on the front panel PC board before it sits squarely behind the front panel. In that case, I suppose I would have seen the threaded shaft draw outward as I snugged the nut. I used a box-end wrench and watched, and didn't see that happening. I think the toothed lockwasher on the inside crushed more on one side. Since I had 6" wrench leverage, I followed temptation and made it pretty tight, maybe more than intended? - but not extreme. I do have some finesse. I suppose I could try tightening it more, to see if it straightens out. Adding the nut inside the front panel will move the VFO A encoder back and solve that problem, but it can cause fit issues in the future as you add options. Another problem that mistake causes are occasional broken LCD glass because the display is moved forward with the front panel board where the screws holding the LCD cover can strike it. So far, they have found they can fix loose PHONES jack washers and crooked VFO A encoders by tightening the nuts sufficiently. As one builder mentioned, the knurled nut defies too much tightening with a tool unless one risks scratching the front panel. What the folks in Aptos have done is to squeeze the front panel sheet metal back against the PC boards in one hand, pressing *between* the jack and the red and yellow LEDs just above it (but not ON the LEDs) with a thumb while supporting the PC boards with their fingers from behind. That flexes the sheet metal just slightly but enough to allow them to tighten the PHONES knurled nut with the fingers of the other hand to trap the washer securely. So far, that has cured all the loose washers they have encountered assembling rigs. That's what I did when I assembled it, since I didn't think just finger-tight would do. I got it tighter that way, but still, it loosened as soon as I plugged headphones in a couple times. They also reported getting a few K3s back with complaints about a crooked VFO A encoder that was fixed simply by tightening the nut against the front panel. It was finger tight, but not tight enough. A little extra leverage on the nut straightened up the shaft. See above. Mine IS pretty tight. Of course, both of those "fixes" can cause serious damage if the front panel is not properly spaced from the front panel board using the 5/16" standoffs and split lock washers as shown in the manual. I guess I'm safe there. An obvious question is "how tight is too tight" so that it might break something. I have assembled two front panels, and both times nominal pressure with pliers (or a socket wrench held in my hand - no handle attached) was plenty. But two is a tiny sample. It would be good to hear from those who have the "loose Phones washer" and "crooked VFO A encoder" problems and whether any of the above helped, should you be inclined to take another look. Feel free to drop me a note if you're experiencing these problems and let me know if the above help. Ron If I can find some fix for the loose PHONES jack, I'll be happy to leave the encoder shaft as it is, unless you suggest I tighten it a bit more (trusting my good judgement) but now that I recall from the photo how slim the lock washers are, I'm more inclined to leave well enough alone. Thanks! Windy___ 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 low PEP Power on SSB
> I don't know if the same thing applies to all Kenwood branded > electret element mics (should any exist) or not. It will depend on > whether the particular microphone design develops a bias derived > from the pin 5 voltage (which is most likely because AFAIK Kenwood > transceivers do not apply bias to pin 1 of the mic connector). If > the bias voltage must come from pin 5, then that mic will not work > with the K3 without modification because the 8 volt supply is on > pin 6 of the K3 mic jack rather than pin 5 on the Kenwood. All Kenwood branded microphones with electret elements or amplified dynamic elements (MC-55, MC-60A, MC-80 and MC-85) require DC on pin 5 or the use of batteries. The mic audio line includes a blocking capacitor to prevent the use of bias on the mic. Of all the Kenwood "desk mics" only the MC-60 (not the MC-60A) and MC-90 are suitable for use without modification. The MC-60 and 90 use an unamplified dynamic element that requires no bias or preamp power. Of the "hand mics," the MC-42, MC-43, and MC-47 are dynamic mics that are compatible with Elecraft K2/K3 without modification. 73, ... Joe, W4TV > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of Don Wilhelm > Sent: Tuesday, April 29, 2008 8:59 PM > To: ab2tc > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 low PEP Power on SSB > > > Knut, > > Unfortunately there is no one crisp answer - one must know the > particular microphone that he has in hand. > > There may be a difference between a Kenwood (branded) > microphone and a > Heil microphone with an adapter for the Kenwood (or there may > not be - > it all depends). > > Your Heil IC (electret element) mic with the Kenwood adapter > will work > just fine as long as you use the K3 menu to apply bias to the > microphone > AF line. Bob Heil has assured me that all his basic microphones use > only 4 signal lines - AF, AF Ground, PTT, and PTT Ground. > The adapters > then map these 4 signal lines to the corresponding pin for the > particular pinout defined by the adapter name. > > As a result, any Heil microphone will work with the K3 when > the mic is > equipped with a Kenwood adapter. If it is a dynamic mic, the K3 mic > bias should be turned off in the menu, but if it is an > electret element, > then bias must be turned on. Caution: you must know your Heil > microphone element type - a dynamic element can be damaged if bias is > applied to it. > > I don't know if the same thing applies to all Kenwood branded > electret > element mics (should any exist) or not. It will depend on > whether the > particular microphone design develops a bias derived from the pin 5 > voltage (which is most likely because AFAIK Kenwood > transceivers do not > apply bias to pin 1 of the mic connector). If the bias voltage must > come from pin 5, then that mic will not work with the K3 without > modification because the 8 volt supply is on pin 6 of the K3 mic jack > rather than pin 5 on the Kenwood. > > This subject can have as many answers as there are > microphones. If you > are unable to determine the compatibility of your particular > microphone, > I recommend first asking the microphone manufacturer which > pins are used > for what function. There is also good microphone information at > http://www.dxzone.com/catalog/Technical_Reference/Mic_wiring/i > ndex.shtml, > and a very extensive listing of microphone pinouts and > diagrams has been > compiled by G4WPW. We can provide information about the K3, but > questions about microphones (other than Elecraft mics) will not have > such crisp answers because there are so many variations. > > If all else fails (or that process is too cumbersome), there are > Elecraft microphones that can be purchased. Additionally, the > enterprising amateur can re-wire whatever microphone he has > available to > the Elecraft pinout - I have several mics of various brands, and many > are wired for the Elecraft pinout. > > 73, > Don W3FPR > > ab2tc wrote: > > Hi all, > > > > This is getting more and more confusing. What exactly is the > > compatibility issue with the K3 and an electret microphone > wired for > > Kenwood? I have a Heil Proset with the IC element (which is > electret). > > I originally ordered it with the ICOM adapter and used it > successfully > > for years with the IC-718. Prior to receiving the K3, I ordered the > > Kenwood cable adapter. When I got the K3, I plugged the mic in, set > > the mic selection to FP.L with bias on and everything seems to be > > working fine. I never had a K2 so I don't know what's up > with "the K2 > > wiring for the Kenwood microphone". Can we please leave the > K2 out of > > the picture and make a problem statement what might be the > issue with > > an electret microphone intended to be used with Kenwood > when applied > > to the K3. > > > > Knut - AB2TC
Re: [Elecraft] K3 Microphone
Gary Can you find a carbon microphone, such as might be in an older telephone? You could probably cobble a working microphone from it with a load resistor and a blocking capacitor, and using the +8v from the K3. Good luck and 73 Bob N6WG - Original Message - From: "Gary Gregory" <[EMAIL PROTECTED]> To: Sent: Tuesday, April 29, 2008 9:13 PM Subject: [Elecraft] K3 Microphone > Hi All, > > I got really excited when the K3 turned up in the post. I suppose you cannot > imagine the look on my face when I opened it all up and lifted all the > contents onto the bench in the shack and discovered that my K3 arrived > without a microphone. > > I know, read the order form fully next time. > > Welll for 3 grand, I didn't think I had to order and pay extra for a fist > mic. Kinda took the excitement right out of my sails. > > I live in what is called "Outback" queensland, Australia, not the place > where I can find a spare Microphone laying around unused. The testing will > have to wait a week or so now till i find a Mic. > > gary > VK4WT > ___ > 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 Microphone
Hi All, I got really excited when the K3 turned up in the post. I suppose you cannot imagine the look on my face when I opened it all up and lifted all the contents onto the bench in the shack and discovered that my K3 arrived without a microphone. I know, read the order form fully next time. Welll for 3 grand, I didn't think I had to order and pay extra for a fist mic. Kinda took the excitement right out of my sails. I live in what is called "Outback" queensland, Australia, not the place where I can find a spare Microphone laying around unused. The testing will have to wait a week or so now till i find a Mic. gary VK4WT ___ 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/K3 case inquiries
I've now responded to all the -many- inquiries about my K2 and K3 cases. If you've asked for information and -not- received a reply, please ask again. If you're a Comcast subscriber, I'll need an alternate address. 73! Rose Kopp - N7HKW [EMAIL PROTECTED] ___ 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 wish list - option to turn off display
Bob, I don't think your concerns are warranted. The LCD is an array of transistor switches which affect the transmission of light by polarizing effects of their electrostatic field. The actual light is provided by backlighting from light emitting diodes which are well known for their longevity. The Day mode will shut off the LED backlights on the LCD, but unfortunately it also ups the level of brightness for the LEDs on the controls. That would seem to be a simple fix in the firmware. Al WA6VNN In a message dated 4/27/2008 7:06:34 A.M. Pacific Daylight Time, [EMAIL PROTECTED] writes: I increasingly like to operate remote, especially when traveling. This can sometimes mean that the rig is turned on for several days. I have some concern about burn-out of the LCD display in areas where it remains unchanged for long periods. Maybe this is an unjustified worry, but it would be good to have the option to simply turn off the display when using remote operation, or even when operating the rig from a PC in the shack. Bob, G3YIQ ___ **Need a new ride? Check out the largest site for U.S. used car listings at AOL Autos. (http://autos.aol.com/used?NCID=aolcmp0030002851) ___ 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] Measuring power output of an SSB transmitter
Say you have a narrow-band signal at 1350 kHz, the frequency of our local AM broadcast station KSRO. You could use a sampling frequency of, say, 1000 kHz. The samples from the 1350 kHz signal would be identical to the samples of a signal at 350 kHz or 2350 kHz or 3350 kHz, etc. But if you know in advance that the signal is band-limited, then you can accurately re-create the 1350 kHz signal eliminating the "images" at the other frequencies. If you measure the 1350 kHz AM signal with a digital oscilloscope that has a 1 MHz sample rate, it will appear that the signal is at 350 kHz. (That is, the samples are identical to those from a 350 kHz signal.) But that's OK if you only care about the modulation. Al N1AL On Tue, 2008-04-29 at 16:43, Andrew Faber wrote: > Al, > I'm confused. I always thought (at least before I became a lawyer and > stopped thinking about such things) that to reconstruct a waveform you > needed to sample at twice the highest frequency of the Fourier components > contained in the signal waveform. For a sine wave, that would be twice the > frequency. For a square wave, that would be virtually impossible to do > accurately, since it is composed of an infinite series of sine wave > harmonics, though you could approximate an accurate waveform to any degree > desired by sampling ever higher in frequency. Are you saying something > different, or do you mean that for a narrow-band signal, you have a > practical high-frequency cut-off, and thus a practical limit on how fast you > need to sample? > 73, Andy, AE6Y > > - Original Message - > From: "Alan Bloom" <[EMAIL PROTECTED]> > To: "Romanchik Dan" <[EMAIL PROTECTED]> > Cc: "Mailing List Elecraft" > Sent: Tuesday, April 29, 2008 1:14 PM > Subject: Re: [Elecraft] Measuring power output of an SSB transmitter > > > > Actually, for a narrow-band signal, you only have to sample at twice the > > BANDWIDTH, not twice the frequency. So long as there are no interfering > > signals around (reasonably accurate when measuring a transmitter), > > so-called "undersampling" works fine so long as: > > > > 1. The sample rate is more than twice the bandwidth. > > 2. None of the harmonics (sample_rate/2) fall close to the signal. > > > > Al N1AL > > > > > > On Tue, 2008-04-29 at 11:05, Romanchik Dan wrote: > >> Sampling at twice the bandwidth will allow you to accurately extract > >> frequency information about a signal, or if all you were viewing were > >> sine waves. To view the actual waveform, however, you really want to > >> sample at at least 4x or 5x the bandwidth, or, even better, 10x the > >> bandwidth. > >> > >> 73! > >> > >> Dan KB6NU > >> -- > >> CW Geek and MI Affiliated Club Coordinator > >> Read my ham radio blog at http://www.kb6nu.com > >> LET'S GET MORE KIDS INTO HAM RADIO! > >> > >> > >> > >> On Apr 29, 2008, at Apr 29, 1:32 PM, Stephen Prior wrote: > >> > >> > On a related topic, does anyone have any experience of using the > >> > usb types > >> > of 'oscilloscopes' which appear on eBay- dual channel 60MHz > >> > bandwidth and > >> > 150Mb/s sampling rate? It's a neat and cost-effective way of > >> > displaying the > >> > transmitted waveform for those of us without desk/bench room for a > >> > 'proper' > >> > scope. > >> > > >> > I've always been led to believe that sampling at twice the > >> > bandwidth is a > >> > decent decent rule of thumb and this one is better than that. > >> > > >> > I'd be grateful for any advice from someone who has one. > >> > > >> > Thanks > >> > > >> > Stephen G4SJP > >> > > >> > KX-1, K2, K3 almost! > >> > > >> > > >> > > >> > ___ > >> > 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 mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the li
[Elecraft] Attn: Dick - W4RAK
Dick, did you receive the K3 case information? I'm concerned about Comcast blockage, as always. 73! Rose Kopp - N7HKW [EMAIL PROTECTED] or [EMAIL PROTECTED] ___ 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 low PEP Power on SSB
This is getting more and more confusing. What exactly is the compatibility issue with the K3 and an electret microphone wired for Kenwood? I have a Heil Proset with the IC element (which is electret). Knut, The answer is going to become a bit more complicated until it becomes easier to understand the issue. Here goes: First, from the K3 operating manual, page 13: "Bias must be turned on for the MH2, MD2, and Proset-K2. It must be off for Heil mics using the HC4 or HC5 elements." We're really discussing two means of mic bias here. One form of bias appears on Pin 1 (mic lead) on the K3's mic connector, while the other appears on Pin 6 (+8 VDC). The K3 has the ability (through a menu command) to self-bias an electret condenser through the mic lead on Pin 1. When bias is activated through the K3's menu, the mic lead is clamped with a + 4.5 V DC bias voltage for electrets. The + 8 VDC on Pin 6 is always on; it never turns off through the menu command. However, other forms of electrets and mic buffer circuits are not biased through the mic lead. For example, I am using a highly-modified D-104 with an ultra Hi-Z FET input as a voltage-follower. In the particular circuit I am using, I cannot bias the mic lead directly like you can with your Heil Proset. Instead, I must take +8 VDC from Pin 6 and apply it to the FET. In a nutshell, the K3 can produce mic bias either by clamping the mic lead at pin 1 with +4.5 VDC when activated in the menu OR mic bias can be obtained through Pin 6 on the K3 mic connector. What we've been discussing here is that Kenwood places + 8 VDC on Pin 5, while Elecraft is using Pin 6 for the same purpose. That's primarily where the confusion lies. The bottom line is that if you're using a Heil Proset, you should simply activate bias through the K3 menu and forget about Pin 6. I just took the soldering pencil to my D-104's connector and moved the power lead from Pin 5 to Pin 6 and all is well now. No surprise, now that I see what's really going on -- and I was able to use the low-gain mic setting. I'm a happy camper now. Finally, Elecraft has given us the choice to bias either way, but because of the foregoing reasons, the Kenwood pin-out is certainly not 100% compatible with the K3. Paul, W9AC ___ 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 low PEP Power on SSB
Knut, Unfortunately there is no one crisp answer - one must know the particular microphone that he has in hand. There may be a difference between a Kenwood (branded) microphone and a Heil microphone with an adapter for the Kenwood (or there may not be - it all depends). Your Heil IC (electret element) mic with the Kenwood adapter will work just fine as long as you use the K3 menu to apply bias to the microphone AF line. Bob Heil has assured me that all his basic microphones use only 4 signal lines - AF, AF Ground, PTT, and PTT Ground. The adapters then map these 4 signal lines to the corresponding pin for the particular pinout defined by the adapter name. As a result, any Heil microphone will work with the K3 when the mic is equipped with a Kenwood adapter. If it is a dynamic mic, the K3 mic bias should be turned off in the menu, but if it is an electret element, then bias must be turned on. Caution: you must know your Heil microphone element type - a dynamic element can be damaged if bias is applied to it. I don't know if the same thing applies to all Kenwood branded electret element mics (should any exist) or not. It will depend on whether the particular microphone design develops a bias derived from the pin 5 voltage (which is most likely because AFAIK Kenwood transceivers do not apply bias to pin 1 of the mic connector). If the bias voltage must come from pin 5, then that mic will not work with the K3 without modification because the 8 volt supply is on pin 6 of the K3 mic jack rather than pin 5 on the Kenwood. This subject can have as many answers as there are microphones. If you are unable to determine the compatibility of your particular microphone, I recommend first asking the microphone manufacturer which pins are used for what function. There is also good microphone information at http://www.dxzone.com/catalog/Technical_Reference/Mic_wiring/index.shtml, and a very extensive listing of microphone pinouts and diagrams has been compiled by G4WPW. We can provide information about the K3, but questions about microphones (other than Elecraft mics) will not have such crisp answers because there are so many variations. If all else fails (or that process is too cumbersome), there are Elecraft microphones that can be purchased. Additionally, the enterprising amateur can re-wire whatever microphone he has available to the Elecraft pinout - I have several mics of various brands, and many are wired for the Elecraft pinout. 73, Don W3FPR ab2tc wrote: Hi all, This is getting more and more confusing. What exactly is the compatibility issue with the K3 and an electret microphone wired for Kenwood? I have a Heil Proset with the IC element (which is electret). I originally ordered it with the ICOM adapter and used it successfully for years with the IC-718. Prior to receiving the K3, I ordered the Kenwood cable adapter. When I got the K3, I plugged the mic in, set the mic selection to FP.L with bias on and everything seems to be working fine. I never had a K2 so I don't know what's up with "the K2 wiring for the Kenwood microphone". Can we please leave the K2 out of the picture and make a problem statement what might be the issue with an electret microphone intended to be used with Kenwood when applied to the K3. Knut - AB2TC Don Wilhelm wrote: Paul and all, That statement *is* true - however it may be misleading for those not familiar with the K2 wiring for the Kenwood microphone. Pins 5 and 6 are *not* wired to the microphone configuration header in the K2 for a Kenwood microphone (except for those Kenwood microphones which have an amplifier or an electret element). ___ 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] Measuring power output of an SSB transmitter
One might, at the risk of some oversimplification, think of the sampling process as demodulation. To recover the envelope, one does not care about the absolute frequency. What you are concerned with is the variation in amplitude. As I said, over-simplified but nonetheless perhaps useful as a starting point. Jack K8ZOA A recovering lawyer as well as engineer. Andrew Faber wrote: Al, I'm confused. I always thought (at least before I became a lawyer and stopped thinking about such things) that to reconstruct a waveform you needed to sample at twice the highest frequency of the Fourier components contained in the signal waveform. For a sine wave, that would be twice the frequency. For a square wave, that would be virtually impossible to do accurately, since it is composed of an infinite series of sine wave harmonics, though you could approximate an accurate waveform to any degree desired by sampling ever higher in frequency. Are you saying something different, or do you mean that for a narrow-band signal, you have a practical high-frequency cut-off, and thus a practical limit on how fast you need to sample? 73, Andy, AE6Y - Original Message - From: "Alan Bloom" <[EMAIL PROTECTED]> To: "Romanchik Dan" <[EMAIL PROTECTED]> Cc: "Mailing List Elecraft" Sent: Tuesday, April 29, 2008 1:14 PM Subject: Re: [Elecraft] Measuring power output of an SSB transmitter Actually, for a narrow-band signal, you only have to sample at twice the BANDWIDTH, not twice the frequency. So long as there are no interfering signals around (reasonably accurate when measuring a transmitter), so-called "undersampling" works fine so long as: 1. The sample rate is more than twice the bandwidth. 2. None of the harmonics (sample_rate/2) fall close to the signal. Al N1AL On Tue, 2008-04-29 at 11:05, Romanchik Dan wrote: Sampling at twice the bandwidth will allow you to accurately extract frequency information about a signal, or if all you were viewing were sine waves. To view the actual waveform, however, you really want to sample at at least 4x or 5x the bandwidth, or, even better, 10x the bandwidth. 73! Dan KB6NU -- CW Geek and MI Affiliated Club Coordinator Read my ham radio blog at http://www.kb6nu.com LET'S GET MORE KIDS INTO HAM RADIO! On Apr 29, 2008, at Apr 29, 1:32 PM, Stephen Prior wrote: > On a related topic, does anyone have any experience of using the > usb types > of 'oscilloscopes' which appear on eBay- dual channel 60MHz > bandwidth and > 150Mb/s sampling rate? It's a neat and cost-effective way of > displaying the > transmitted waveform for those of us without desk/bench room for a > 'proper' > scope. > > I've always been led to believe that sampling at twice the > bandwidth is a > decent decent rule of thumb and this one is better than that. > > I'd be grateful for any advice from someone who has one. > > Thanks > > Stephen G4SJP > > KX-1, K2, K3 almost! > > > > ___ > 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 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 low PEP Power on SSB
Hi all, This is getting more and more confusing. What exactly is the compatibility issue with the K3 and an electret microphone wired for Kenwood? I have a Heil Proset with the IC element (which is electret). I originally ordered it with the ICOM adapter and used it successfully for years with the IC-718. Prior to receiving the K3, I ordered the Kenwood cable adapter. When I got the K3, I plugged the mic in, set the mic selection to FP.L with bias on and everything seems to be working fine. I never had a K2 so I don't know what's up with "the K2 wiring for the Kenwood microphone". Can we please leave the K2 out of the picture and make a problem statement what might be the issue with an electret microphone intended to be used with Kenwood when applied to the K3. Knut - AB2TC Don Wilhelm wrote: > > Paul and all, > > That statement *is* true - however it may be misleading for those not > familiar with the K2 wiring for the Kenwood microphone. Pins 5 and 6 > are *not* wired to the microphone configuration header in the K2 for a > Kenwood microphone (except for those Kenwood microphones which have an > amplifier or an electret element). > > > -- View this message in context: http://www.nabble.com/K3-low-PEP-Power-on-SSB-tp16962527p16973116.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] K2 Alignment problem
Still trying to adjust my SSB Filters. First it was INFO 230. I plugged in the probe and it worked the first attempt. Then when I the next day to continue git'r done I keep getting INFO 230 on CAL FIL, CAL FCTR, and it will not read anything touching the side of C22. I took the probe apart and after 3 days found another 10 picofarad cap and rebuilt the probe. Still no worky and without the probe working none of my changes take effect. Only have a DMM and Spectragramsoldering iron and a hammer. Is there something I might check w/o taking all the boards out? 7QP coming up this weekend. Thanks, Jay, W6JDB K2/100 #279 ___ 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] Measuring power output of an SSB transmitter
Al, I'm confused. I always thought (at least before I became a lawyer and stopped thinking about such things) that to reconstruct a waveform you needed to sample at twice the highest frequency of the Fourier components contained in the signal waveform. For a sine wave, that would be twice the frequency. For a square wave, that would be virtually impossible to do accurately, since it is composed of an infinite series of sine wave harmonics, though you could approximate an accurate waveform to any degree desired by sampling ever higher in frequency. Are you saying something different, or do you mean that for a narrow-band signal, you have a practical high-frequency cut-off, and thus a practical limit on how fast you need to sample? 73, Andy, AE6Y - Original Message - From: "Alan Bloom" <[EMAIL PROTECTED]> To: "Romanchik Dan" <[EMAIL PROTECTED]> Cc: "Mailing List Elecraft" Sent: Tuesday, April 29, 2008 1:14 PM Subject: Re: [Elecraft] Measuring power output of an SSB transmitter Actually, for a narrow-band signal, you only have to sample at twice the BANDWIDTH, not twice the frequency. So long as there are no interfering signals around (reasonably accurate when measuring a transmitter), so-called "undersampling" works fine so long as: 1. The sample rate is more than twice the bandwidth. 2. None of the harmonics (sample_rate/2) fall close to the signal. Al N1AL On Tue, 2008-04-29 at 11:05, Romanchik Dan wrote: Sampling at twice the bandwidth will allow you to accurately extract frequency information about a signal, or if all you were viewing were sine waves. To view the actual waveform, however, you really want to sample at at least 4x or 5x the bandwidth, or, even better, 10x the bandwidth. 73! Dan KB6NU -- CW Geek and MI Affiliated Club Coordinator Read my ham radio blog at http://www.kb6nu.com LET'S GET MORE KIDS INTO HAM RADIO! On Apr 29, 2008, at Apr 29, 1:32 PM, Stephen Prior wrote: > On a related topic, does anyone have any experience of using the > usb types > of 'oscilloscopes' which appear on eBay- dual channel 60MHz > bandwidth and > 150Mb/s sampling rate? It's a neat and cost-effective way of > displaying the > transmitted waveform for those of us without desk/bench room for a > 'proper' > scope. > > I've always been led to believe that sampling at twice the > bandwidth is a > decent decent rule of thumb and this one is better than that. > > I'd be grateful for any advice from someone who has one. > > Thanks > > Stephen G4SJP > > KX-1, K2, K3 almost! > > > > ___ > 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 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 Front panel rattling washer
Stan, W5EWA wrote: I think one possible fix would be to use .050" shorter standoffs between the DSP board and the FP board. That would cause the shoulder of the headphone jack to be close enough to the FP sheet metal to keep the washer from rattling, and would also allow the connectors on the FP assembly to not seat quite as far down on to the mating pins of the connectors on the RF board, therefore allowing the screws for the front panel mounting to line up easier. --- That also moves the front panel board closer to the front panel sheet metal where the screws holding the LCD cover can hit the LCD itself and break the glass. 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
[Elecraft] taking the kx1 on a airplane
Hello all, I posted a message about a week ago asking if there would be any problems taking a ham radio on a trip aboard a commercial airline. Well I took my KX1 to my son's place for a long weekend. I never had a problem. Packed it in my baggage. Battery, end fed dipole, small key, copy of my license and diagram of the antenna setup. Never got one question about it in the baggage. The main reason I took the little rig was to set it up in my sons backyard with the help of his two young sons. They were amazed at the little rig. Also never heard cw before. (Ages 11 and 8) So after explaining and letting them get the feel of the cw key,they really liked it. For myself and the two boys it was a great experience. Now hoping one or maybe both will want to become a ham. (have lots of gear for them hi hi). Thanks to all for responding with suggestions and help about transporting the rig. P.S. also made several nice contacts. Don...w2xb -- View this message in context: http://www.nabble.com/taking-the-kx1-on-a-airplane-tp16971116p16971116.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 # 290 Sold
K3 # 290 is sold and paid for. The K3 is one popular radio. Bill - N2WG ___ 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] Measuring power output of an SSB transmitter
Actually, for a narrow-band signal, you only have to sample at twice the BANDWIDTH, not twice the frequency. So long as there are no interfering signals around (reasonably accurate when measuring a transmitter), so-called "undersampling" works fine so long as: 1. The sample rate is more than twice the bandwidth. 2. None of the harmonics (sample_rate/2) fall close to the signal. Al N1AL On Tue, 2008-04-29 at 11:05, Romanchik Dan wrote: > Sampling at twice the bandwidth will allow you to accurately extract > frequency information about a signal, or if all you were viewing were > sine waves. To view the actual waveform, however, you really want to > sample at at least 4x or 5x the bandwidth, or, even better, 10x the > bandwidth. > > 73! > > Dan KB6NU > -- > CW Geek and MI Affiliated Club Coordinator > Read my ham radio blog at http://www.kb6nu.com > LET'S GET MORE KIDS INTO HAM RADIO! > > > > On Apr 29, 2008, at Apr 29, 1:32 PM, Stephen Prior wrote: > > > On a related topic, does anyone have any experience of using the > > usb types > > of 'oscilloscopes' which appear on eBay- dual channel 60MHz > > bandwidth and > > 150Mb/s sampling rate? It's a neat and cost-effective way of > > displaying the > > transmitted waveform for those of us without desk/bench room for a > > 'proper' > > scope. > > > > I've always been led to believe that sampling at twice the > > bandwidth is a > > decent decent rule of thumb and this one is better than that. > > > > I'd be grateful for any advice from someone who has one. > > > > Thanks > > > > Stephen G4SJP > > > > KX-1, K2, K3 almost! > > > > > > > > ___ > > 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] CW Mistakes
Kevin VE3SYB wrote: An A isn't .- it is didah. A C isn't -.-. but dahdidahdit. - Absolutely! It's the sound that's important. Similar cautions are found in the earliest handbooks I have dating back to the 1930's. I suspect that's been so since the beginning of telegraphy. And, as all of those books point out, the best of all is to HEAR the stuff sent. The ideal use of "code practice" oscillators was to have someone else send copy. But, even if working alone, hearing oneself send the characters is superior to the ditdah system, the "ditdah" sound system is far superior to the "dot-dash" which is far superior than looking at the dots and dashes on paper. Nowadays we have tapes and other media where we can listen to CW, as well as on-air practice. W1AW and others sending slow code practice have been very popular for decades for a very good reason. Now, that doesn't stop the "dit counting" altogether. At least it doesn't for me. Once in a while I'll stumble wondering, for example, if I heard a "B" or a "6" and quickly resolve it by replaying the "tape" in my head and noting whether it had three or four dits. I must have a few neurons dedicated to solving those puzzles because I can usually keep right on "recoding" the characters in my memory while I'm doing counting - at least for a few following characters - so I don't miss anything. That used to happen most often copying messages encrypted in five-letter code groups that include a mix of letters and numerals in any order. Of course, that's strictly character-by-character copy. There are no "words" to recognize, and any combination of code characters is possible. 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] K3--Trouble with Power Pole connectors
Wire the dc cable direct into the rig and let the other end do the disconnect. Less dc loss and no contacts to worry about. David G3UNA I know the powers that be don't like complaints about the APP, but, the Factory mounted APP's on my K3 had one of the blades recessed at least 1/8 inch from its proper position. Until I corrected this (which requires removing that side of the cabinet and the rear panel) my connectors would literally fall off from the weight of the short piece of power lead. It took more than three attempts to get both of the chassis mounted blades in the proper position. UN-SAT. They now stay together, but I would never put them in a rig I designed and am presently considering some type of replacement. Rich, KE0X ___ 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 Headphone jack/front panel gap
I've only received sporadic reports of this happening, and *nothing* after suggesting checking the fit of the mic connector, which led me to believe the problem was fixed as suggested. I appreciate those who are taking the time to say otherwise! I did a little research today with people building K3s in Aptos and handling some that were returned for various reasons. As Terry noted, it's possible there is a variation in the thickness of the washers supplied that is getting past the folks doing receiving inspection. So far, while building K3s, they have yet to encounter a single unit that didn't fit correctly. However, they are seeing several things that might cause the problem. Among the returns they have noticed several that did not have the split ring lock washer between the standoff and the pc board as shown in Figure 34 of the assembly manual. Instead the builder put the washer under the head of the screw because thats where one might expect to put a lock washer, but that is *not* where it goes. In this case it is part of the total spacer provided by the standoff and must go between the standoff and the pc board. That mistake actually helps the PHONES washer fit more tightly by moving everything forward toward the sheet metal, but can result in a skewed VFO A shaft since the connector 'bottoms out' in the jack on the front panel PC board before it sits squarely behind the front panel. Adding the nut inside the front panel will move the VFO A encoder back and solve that problem, but it can cause fit issues in the future as you add options. Another problem that mistake causes are occasional broken LCD glass because the display is moved forward with the front panel board where the screws holding the LCD cover can strike it. So far, they have found they can fix loose PHONES jack washers and crooked VFO A encoders by tightening the nuts sufficiently. As one builder mentioned, the knurled nut defies too much tightening with a tool unless one risks scratching the front panel. What the folks in Aptos have done is to squeeze the front panel sheet metal back against the PC boards in one hand, pressing *between* the jack and the red and yellow LEDs just above it (but not ON the LEDs) with a thumb while supporting the PC boards with their fingers from behind. That flexes the sheet metal just slightly but enough to allow them to tighten the PHONES knurled nut with the fingers of the other hand to trap the washer securely. So far, that has cured all the loose washers they have encountered assembling rigs. They also reported getting a few K3s back with complaints about a crooked VFO A encoder that was fixed simply by tightening the nut against the front panel. It was finger tight, but not tight enough. A little extra leverage on the nut straightened up the shaft. Of course, both of those "fixes" can cause serious damage if the front panel is not properly spaced from the front panel board using the 5/16" standoffs and split lock washers as shown in the manual. An obvious question is "how tight is too tight" so that it might break something. I have assembled two front panels, and both times nominal pressure with pliers (or a socket wrench held in my hand - no handle attached) was plenty. But two is a tiny sample. It would be good to hear from those who have the "loose Phones washer" and "crooked VFO A encoder" problems and whether any of the above helped, should you be inclined to take another look. Feel free to drop me a note if you're experiencing these problems and let me know if the above help. Ron [EMAIL PROTECTED] -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Terry Schieler Sent: Tuesday, April 29, 2008 8:37 AM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Headphone jack/front panel gap Chuck, AE4CW, posted: " Ron, I too had the headphone jack problem. After talking with tech support I reveisited the assembly and am certain it's perfect, but there is still a gap between the shoulder of the headphone jack and the front panel. I measured it with a shim guage but, unfortunately have forgotten the number. In any case I found a thin washer (from another 1/4" jack) that filled the gap perfectly and intalled it over the jack threads behind the panel. Perhaps there was as parts variation from the vendor that could account for the gap." Chuck et al I had the exact same issue with the headphone jack and the "thick washer" used to space it from the front panel. Everything has been checked and double checked and the thick spacing washer still rattles between the board mounted headphone jack and the front panel. I posted my concern here months ago and received responses like Chuck did above. On the other hand, I received half a dozen direct emails from other K3 owners who experienced the loose spacing washer. All seemed to feel that their fitting of the front panel was correct in every other area. I think it's an issue other than a poorly
RE: [Elecraft] K3--Trouble with Power Pole connectors
APPs are [EMAIL PROTECTED] > Date: Tue, 29 Apr 2008 12:36:05 -0700> From: [EMAIL PROTECTED]> To: elecraft@mailman.qth.net> Subject: Re: [Elecraft] K3--Trouble with Power Pole connectors> > > I know the powers that be don't like complaints about the APP, but, the> Factory mounted APP's on my K3 had one of the blades recessed at least 1/8> inch from its proper position. Until I corrected this (which requires> removing that side of the cabinet and the rear panel) my connectors would> literally fall off from the weight of the short piece of power lead. It took> more than three attempts to get both of the chassis mounted blades in the> proper position. UN-SAT. They now stay together, but I would never put> them in a rig I designed and am presently considering some type of> replacement. > > Rich,> KE0X> > > Robert Tellefsen wrote:> > > > I thought these PP connectors were supposed to be such> > great stuff :-)> > > > Mine keep falling out and losing power on the rig.> > > > I assembled mine very meticulously, as I've read a lot of> > the comments here about keeping the solder away from> > the contact area.> > > > I assembled mine with the blade standing vertical in a> > third-hand tool, so the solder never came above the end of> > the cylinder that the wire end sticks into.> > > > The blades are pushed all the way into the plastic housings> > so the curved end clicks over the little ridge to keep it in> > its own housing.> > > > When I insert the plugs into the receptacles on the back> > of the K3, they go all the way to the end and bump up> > against the end of the receptacle. No problem about being > > pushed in all the way.> > > > It seems to me that there is very little friction/pressure> > between the male and female connectors to hold them> > together. I tried the little cylinder pin that is supposed to> > help hold them together, but it quickly got lost when the> > male connector fell out for the third time.> > > > Can anyone tell me if the blades in these connectors need> > to be bent a bit to maintain a good contact so that will stay> > together?> > > > Otherwise, I'll have to replace the PP connectors with something> > more reliable.> > > > Thanks and 73> > Bob N6WG> > > > ___> > 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--Trouble-with-Power-Pole-connectors-tp16951265p16968522.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
[Elecraft] K3 # 290 FOR SALE
Just can't find the time for amateur radio, so I'm selling my new K3, the best radio I've ever owned. What's included: K3 KPA3100W PA KFL3A - 250 250 Hz, 8 Pole Filter KFL3A - 400 400 Hz, 8 Pole Filter KFL3A - 2.8K 2.8 kHz, 8 Pole Filter KTCXO3-1 TCXO 1ppm Perfect, but can send pics. If you want to try it out, I'm in Wilmington, NC. First $2177.00 plus shipping takes it. Shipping $30 to lower 48. Contact me at [EMAIL PROTECTED] . Thanks, Bill - N2WG ___ 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] CW Mistakes
Greetings, Frank. Before I get on the air. What are some of the most common errors for beginning CW Operators. Thanks When starting down the road to learn morse, I would toss any sheet that shows the characters as a bunch of dots and dashes. You would be better off with a sheet that shows the characters as a bunch of dits and dahs. It will help you to learn the sound of characters rather than how many dots and dashes are in a character (ie. you won't be building a translation table in your head from sound to dots/dashes to the character. An A isn't .- it is didah. A C isn't -.-. but dahdidahdit. I learned about morse code long before I was interested in becoming a ham and still find I "count" the dots and dashes at times. At least I can copy code during contests in the 20 to 25 range (and 30 if I hear the exchange a few times). I'm more comfortable around 15wpm but I wish I could learn to get rid of the translation table in my head which still comes in to play at times. Getting on the air helps but I found that even casual listening to CW on air is useful. Tune around to find some code at a speed that you feel you can copy and just listen to it even if you aren't in a position to write it down. Casual copying of code (and head copy) can still improve ones speed. In my early ham days, at a time when I wasn't on the air for a while it had brought my code speed up from about 5wpm to around the 10wpm mark. Now, I have found working contests has once again helped me to copy code at higher speeds. There is some other useful information on CW operating at: http://www.ac6v.com/morseaids.htm -- Cheers! Kevin. http://www.ve3syb.ca/ |"What are we going to do today, Borg?" Owner of Elecraft K2 #2172 |"Same thing we always do, Pinkutus: | Try to assimilate the world!" #include | -Pinkutus & the Borg ___ 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--Trouble with Power Pole connectors
I know the powers that be don't like complaints about the APP, but, the Factory mounted APP's on my K3 had one of the blades recessed at least 1/8 inch from its proper position. Until I corrected this (which requires removing that side of the cabinet and the rear panel) my connectors would literally fall off from the weight of the short piece of power lead. It took more than three attempts to get both of the chassis mounted blades in the proper position. UN-SAT. They now stay together, but I would never put them in a rig I designed and am presently considering some type of replacement. Rich, KE0X Robert Tellefsen wrote: > > I thought these PP connectors were supposed to be such > great stuff :-) > > Mine keep falling out and losing power on the rig. > > I assembled mine very meticulously, as I've read a lot of > the comments here about keeping the solder away from > the contact area. > > I assembled mine with the blade standing vertical in a > third-hand tool, so the solder never came above the end of > the cylinder that the wire end sticks into. > > The blades are pushed all the way into the plastic housings > so the curved end clicks over the little ridge to keep it in > its own housing. > > When I insert the plugs into the receptacles on the back > of the K3, they go all the way to the end and bump up > against the end of the receptacle. No problem about being > pushed in all the way. > > It seems to me that there is very little friction/pressure > between the male and female connectors to hold them > together. I tried the little cylinder pin that is supposed to > help hold them together, but it quickly got lost when the > male connector fell out for the third time. > > Can anyone tell me if the blades in these connectors need > to be bent a bit to maintain a good contact so that will stay > together? > > Otherwise, I'll have to replace the PP connectors with something > more reliable. > > Thanks and 73 > Bob N6WG > > ___ > 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--Trouble-with-Power-Pole-connectors-tp16951265p16968522.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 low PEP Power on SSB
I wasn't complaining about getting 110 watts output, I was happy and thought the radio was working fine. This is 110 watts peak rf on the wattmeter not PEP. The radio works fine. There is nothing wrong with using the Kenwood mic. I get 3 to 5 bars on the ALC with only 15 on Mic and 18 on Compression. I hooked up my PR-40 microphone through an amplified 8 band EQ and equalized audio through the W2IHY Iplus fed into the rear connector on the K3 and get the same output readings as with the hand mic. When I was running digital and putting out double the output that the K3 was dialed up and getting high rf spikes I contacted the Elecraft tech's and was instructed that my soundcard was overdriving the radio. I corrected my settings and with the last few upgrades this problem is no more and was only in the Data mode. Mike WA8EBM ___ 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 low PEP Power on SSB
Paul and all, That statement *is* true - however it may be misleading for those not familiar with the K2 wiring for the Kenwood microphone. Pins 5 and 6 are *not* wired to the microphone configuration header in the K2 for a Kenwood microphone (except for those Kenwood microphones which have an amplifier or an electret element). I can make a statement that is true: "The K3 is compatible with any Kenwood 8 pin microphone that does not connect to either pin 5 or pin 6 of the connector." If one pulls back the Foster plug shell, he can check to see if anything is connected to these pins. It could also be said another way - the K3 mic connector is compatible with a Kenwood dynamic microphone. Conversely, a Kenwood amplified or electret microphone will *not* be compatible with the K3. 73, Don W3FPR Paul Christensen wrote: I see it and it states this: "The K3 8-pin microphone connector is wired the same as the K2 using the Kenwood pin-out." ___ 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] Monitoring yourself
Yes, it is - it make one great band scope - I just talk on the K3 :-) 73 de M0XDF, K3 #174 -- For all our conceits about being the center of the universe, we live in a routine planet of a humdrum star stuck away in an obscure corner ... on an unexceptional galaxy which is one of about 100 billion galaxies. ... That is the fundamental fact of the universe we inhabit, and it is very good for us to understand that. -Carl Sagan, astronomer and writer (1934-1996) On 29 Apr 2008, at 16:21, Robert Tellefsen wrote: Gee, I thought this was SHORT wave and WIRELESS communication :-) 73, Bob N6WG - Original Message - From: "G4ILO" <[EMAIL PROTECTED]> To: Sent: Tuesday, April 29, 2008 2:55 AM Subject: Re: [Elecraft] Monitoring yourself K3KO wrote: Try listening to yourself on a web SDR. http://websdr.ewi.utwente.nl:8901/ One can listen with the above link on 40 and 80M. It is tunable and does CW.SSB and I guess digital modes. Bandwidth is also adjustable. This is a great link. I'm amazed how low the latency is. I can't figure out how to decode data modes, though, although the page suggests it's possible. I love the picture of the hardware at the bottom of this page: http://websdr.ewi.utwente.nl:8901/info.html . - 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/Monitoring-yourself-tp16918110p16957081.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: RE: [Elecraft] K3 #764 experience and critique
Ron D'Eau Claire wrote: So far, all the cases of a "loose" headphone washer that I've seen were because the front panel pc board wasn't completely seated in the front panel sheet metal. Rather, one edge of the microphone connector is binding in the hole in the sheet metal, keeping the board from fitting all the way against the panel. The Front Panel pc board will flex quite easily when the screws are tightened and it doesn't take to cause the washer on the nearby PHONES jack to be loose. Figure 37 shows exactly how the microphone connector should appear when it's properly seated. The text at the top of page 29 describes how to seat it properly if it is binding. This is *exactly* what happened to me. The mic connector shoulder was originally seated correctly. Later on, I had to take a couple of screws out because while reviewing recent steps, I realized I'd used the wrong washers. Apparently that was when the board hung up on the shoulder of the mic connector. I didn't realize it until it was time to do the final FP assembly. Once I backed up and got it right, all the holes lined up perfectly. Regarding the assembly manual: I made two notes as I worked with the intention of pointing them out to Ron. When I got around to it and re-read the instruction, it turned out the problems were a technical difficulty in my mind. FWIW: While doing the initial 10W SSB adjustments, I was into the dummy load on 14294. I began to get ERR TXF messages and it wouldn't transmit when I tapped XMIT. Thanks to W0YK, I finally figured out that I had put it into AM mode, probably while messing around with TEST mode. Not sure what it was telling me, but it's working fine now. 73, Fred K6DGW - Northern California Contest Club - CU in the 2008 Cal QSO Party 4-5 Oct 08 - www.cqp.org ___ 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: Does the K2 have a built in SWR meter ?
The Basic K2 get´s an SWR Meter as soon as the KAT2 QRP Tuner is built in. You don´t need any 100W Version 72/3 de Peter, DL2FI > -Original Message- > From: [EMAIL PROTECTED] [mailto:elecraft- > [EMAIL PROTECTED] On Behalf Of Gregg R. Lengling > Sent: Tuesday, April 29, 2008 8:38 PM > To: Ffive VHN; elecraft@mailman.qth.net > Subject: Re: [Elecraft] Re: Does the K2 have a built in SWR meter ? > > The basic K2 does not have a bridge on the output...the KPA100 > amplifier and > the KAT100 tuner both have bridges. The 100 has a SWR display from the > bridge, the KPA100 is used basically as a power meter circuit. > > Gregg R. Lengling, W9DHI > Administrator > http://www.milwaukeehdtv.org > http://forums.ham-radio.ch/ > > - Original Message - > From: "Ffive VHN" <[EMAIL PROTECTED]> > To: > Sent: Tuesday, April 29, 2008 1:30 PM > Subject: [Elecraft] Re: Does the K2 have a built in SWR meter ? > > > > Hi again, > > > > Thats interesting.. > > > > Some say 'yes' and some say 'no'. > > > > It looks like the K2 (original qrp) version does not , > > but the K2/100 does. > > > > Do you agree ? > > > > thanks > > > > F5VHN f5vhn(at)yahoo.com (at)=@ > > > > --- Ffive VHN wrote: > > > >> Hello, > >> > >> A simple question for you, > >> > >> Does the K2 have a built in SWR meter ? > >> > >> I am going to build an ATU and I want to know if > >> I'll > >> need to include an SWR meter. If the K2 already has > >> one , I will not need to. > >> > >> Please reply directly to me , thanks. > >> > >> Rob F5VHN f5vhn(at)yahoo.com (at)=@ > >> > >> > >> > >> > > __ > >> Sent from Yahoo! Mail. > >> A Smarter Email > >> http://uk.docs.yahoo.com/nowyoucan.html > >> > > > > > > > > __ > > Sent from Yahoo! Mail. > > A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html > > ___ > > 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. > > Version: 7.5.524 / Virus Database: 269.23.6/1403 - Release Date: > 4/29/2008 > > 7:26 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 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: Does the K2 have a built in SWR meter ?
The basic K2 does not have a bridge on the output...the KPA100 amplifier and the KAT100 tuner both have bridges. The 100 has a SWR display from the bridge, the KPA100 is used basically as a power meter circuit. Gregg R. Lengling, W9DHI Administrator http://www.milwaukeehdtv.org http://forums.ham-radio.ch/ - Original Message - From: "Ffive VHN" <[EMAIL PROTECTED]> To: Sent: Tuesday, April 29, 2008 1:30 PM Subject: [Elecraft] Re: Does the K2 have a built in SWR meter ? Hi again, Thats interesting.. Some say 'yes' and some say 'no'. It looks like the K2 (original qrp) version does not , but the K2/100 does. Do you agree ? thanks F5VHN f5vhn(at)yahoo.com (at)=@ --- Ffive VHN wrote: Hello, A simple question for you, Does the K2 have a built in SWR meter ? I am going to build an ATU and I want to know if I'll need to include an SWR meter. If the K2 already has one , I will not need to. Please reply directly to me , thanks. Rob F5VHN f5vhn(at)yahoo.com (at)=@ __ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html __ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html ___ 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. Version: 7.5.524 / Virus Database: 269.23.6/1403 - Release Date: 4/29/2008 7:26 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] Re: Does the K2 have a built in SWR meter ?
Hi again, Thats interesting.. Some say 'yes' and some say 'no'. It looks like the K2 (original qrp) version does not , but the K2/100 does. Do you agree ? thanks F5VHN f5vhn(at)yahoo.com (at)=@ --- Ffive VHN wrote: > Hello, > > A simple question for you, > > Does the K2 have a built in SWR meter ? > > I am going to build an ATU and I want to know if > I'll > need to include an SWR meter. If the K2 already has > one , I will not need to. > > Please reply directly to me , thanks. > > Rob F5VHN f5vhn(at)yahoo.com (at)=@ > > > > __ > Sent from Yahoo! Mail. > A Smarter Email > http://uk.docs.yahoo.com/nowyoucan.html > __ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html ___ 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 low PEP Power on SSB
Click on the DIAGRAM button and look at the pin out. Bob Serwy - N9RS Right, based on the diagram, it is not 100% compatible with Kenwood. Paul, W9AC ___ 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 low PEP Power on SSB
Click on the DIAGRAM button and look at the pin out. Bob Serwy - N9RS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Christensen Sent: Tuesday, April 29, 2008 1:01 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 low PEP Power on SSB > See FAQ on Elecraft Web site under Microphone connections. Bias is on > pin 6. Bob Serwy - N9RS I see it and it states this: "The K3 8-pin microphone connector is wired the same as the K2 using the Kenwood pin-out." The pin-out may be close to Kenwood's, but it is not the same. I literally took it to mean that the K3 was pin-for-pin compatible with Kenwood's standard. And that's fine for non-condenser Kenwood mics where external powering isn't required. I had been scratching my head as to why my electret mic's output was running so low, even when the K3's high-gain pre-amp setting was selected. I simply moved my electret-condenser mic from a Kenwood TS-870 to the K3 thinking I was all set. To prevent confusion in the future, I recommend the inclusion of a disclaimer in the literature in which it states the two types are not 100% compatible. At the same time, I should have conducted my own due-diligence and compared pin-for-pin just to be sure. Paul, W9AC (now warming up my soldering station...) ___ 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] Measuring power output of an SSB transmitter
Sampling at twice the bandwidth will allow you to accurately extract frequency information about a signal, or if all you were viewing were sine waves. To view the actual waveform, however, you really want to sample at at least 4x or 5x the bandwidth, or, even better, 10x the bandwidth. 73! Dan KB6NU -- CW Geek and MI Affiliated Club Coordinator Read my ham radio blog at http://www.kb6nu.com LET'S GET MORE KIDS INTO HAM RADIO! On Apr 29, 2008, at Apr 29, 1:32 PM, Stephen Prior wrote: On a related topic, does anyone have any experience of using the usb types of 'oscilloscopes' which appear on eBay- dual channel 60MHz bandwidth and 150Mb/s sampling rate? It's a neat and cost-effective way of displaying the transmitted waveform for those of us without desk/bench room for a 'proper' scope. I've always been led to believe that sampling at twice the bandwidth is a decent decent rule of thumb and this one is better than that. I'd be grateful for any advice from someone who has one. Thanks Stephen G4SJP KX-1, K2, K3 almost! ___ 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 low PEP Power on SSB
See FAQ on Elecraft Web site under Microphone connections. Bias is on pin 6. Bob Serwy - N9RS I see it and it states this: "The K3 8-pin microphone connector is wired the same as the K2 using the Kenwood pin-out." The pin-out may be close to Kenwood's, but it is not the same. I literally took it to mean that the K3 was pin-for-pin compatible with Kenwood's standard. And that's fine for non-condenser Kenwood mics where external powering isn't required. I had been scratching my head as to why my electret mic's output was running so low, even when the K3's high-gain pre-amp setting was selected. I simply moved my electret-condenser mic from a Kenwood TS-870 to the K3 thinking I was all set. To prevent confusion in the future, I recommend the inclusion of a disclaimer in the literature in which it states the two types are not 100% compatible. At the same time, I should have conducted my own due-diligence and compared pin-for-pin just to be sure. Paul, W9AC (now warming up my soldering station...) ___ 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 low PEP Power on SSB
There is currently a known problem which is being worked on. An easy way to see the problem is to set the K3 power level at 40 Watts then transmit using Olivia 500/16, the power level peaks around 100 Watts and shows the peaks quite well on the K3 RF output scale. 73 Dave, G4AON K3/100 #80 David Yarnes wrote: >/ Hi All, />/ />/ I've been watching this thread and wondering if there truly is a />/ problem. It seems to suggest there is, and Elecraft says they are />/ looking into it with a firmware update pending. / What I suggest is that everyone wait for the firmware upgrade. I know that they have already made significant changes in this area in the beta firmware and may make more. So you can experiment now to get a baseline for future comparisons, but be aware that it will *definitely* change. -- 73, Vic, K2VCO ___ 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] UPDATE ON ERROR! K2 and accessories for sale
UPDATE! ERROR on KPA100 and KAT100 For sale Elecraft K2-100 With the following options listed below. All are in separate EC-2 cases. I would like to sell "ALL" in one deal but will consider splitting up. However, if I split up the set the radio goes last! - K2 HF Transceiver S/N 2390 - $1000 shipped - Kit and all accessories NEW = $1263.00 new without shipping (Has had all updates to include version B, matched xtals, VCO temp compensation, pa shield, etc) Includes: - KIO2 -K2 AUX I/O RS-232 Interface - KNB2 -K2 Noise Blanker - KSB2 -K2 SSB Option - K160RX - 160m Option - K60XV - 60m and transverter interface option - KDSP2 - Advanced Internal DSP Filter/Clock - Filters Aligned with Spectrogram (With help of W3FPR at his home) - Standard knob "BUT" unless another one was made it is one of 2 with the Elecraft emblem on the knob - Serial rs232 computer interface cable, power cables included with entire package - All manuals included. All in excellent shape and never around smoke. Is 9 out of 10 Condition - original builder owner -- - KPA100 Internal 100 Watt PA in separate EC2 case - $399.00 new; Sell for $320 shipped -- - KAT-100-2 - 100w ATU with EC2 Panels & EC2 Case - $219.00 new plus $59 for EC2 = $278 ; Sell for $210 shipped -- - Astron 25A PS Power Supply in EC2 Case with meters - $59 for case plus PS $100.00 new; Sell for $125 shipped -- - Amplified Speaker in matching EC2 Case built from plans of Dave White, VE6DRW - $90 new; Sell for $75 shipped -- - MH2 Elecraft hand microphone with Heil element - $59.00; Sell for $45 shipped -- - MD2 Elecraft microphone with Heil element and desk stand - $100; Sell for $75 shipped -- - K2 HF Transceiver S/N 2390 $1263 new; Sell for $1000 shipped -- FOR EVERYTHING! $1600 shipped CONUS. I will take paypal plus 2% Rick Tilton WK4R [EMAIL PROTECTED] No virus found in this incoming message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.5/1399 - Release Date: 4/26/2008 2:17 PM No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.5/1399 - Release Date: 4/26/2008 2:17 PM ___ 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--Trouble with Power Pole connectors
I maybe lucky but I have been using anderson power poles for a few years and I never had a problem with them. I use them for all my ham power connections. Bob Serwy - N9RS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Eric Fairbank Sent: Tuesday, April 29, 2008 12:22 PM To: elecraft@mailman.qth.net Subject: RE: [Elecraft] K3--Trouble with Power Pole connectors Iv'e been getting away from using Anderson Powerpole connectors and now relying on Tyco Electronics/AMP Power Lock Connectors. Essentially the same thing, but much higher quality. They will mate with the Anderson line so no problem there. A lot of people have complained at how easily the powerpoles come apart. I did some testing and found that it takes about 3 lbs of force to pull two powerpoles apart, while it takes 8 lbs for the AMP connectors. With an AMP mated to Anderson, it takes 6 lbs. With the AMP connectors, it takes considerably more force to mate them and there is a distinct snap/click sound when they go together. The pins are thicker and they have "wings" on them so they don't flop around in the housing like the Anderson ones do. Also, they don't require a roll pin to lock them together. There is a little tab on the housing that locks one half of the connector to the other. They do cost more but your getting a higher quality product in my opinion. Anyway, for those of you that have an issue with the way Anderson's "lock" together, you might want to give these a try. I get mine from Mouser. http://www.mouser.com/catalog/632/1186.PDF Eric N3EF --- On Mon, 4/28/08, Ron D'Eau Claire <[EMAIL PROTECTED]> wrote: > From: Ron D'Eau Claire <[EMAIL PROTECTED]> > Subject: RE: [Elecraft] K3--Trouble with Power Pole connectors > To: "'Robert Tellefsen'" <[EMAIL PROTECTED]>, "'Reflector Elecraft'" > > Date: Monday, April 28, 2008, 11:33 PM Excellent question, Bob!! > > You caused me to check. I have several APP cables about, to I hooked > two of them together and added weights to one while lifting with the > other until they separated. > > My test pair separated at 1.2 kg or just over 2.6 lbs. I consider that > substantial force needed to separate them. I've never had a pair fall > apart without tugging on them with what I considered pretty strong > force. > > Clearly, something different is going on with yours or are you are > much stronger than I. > > Ron AC7AC Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ ___ 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 low PEP Power on SSB
David Yarnes wrote: Hi All, I've been watching this thread and wondering if there truly is a problem. It seems to suggest there is, and Elecraft says they are looking into it with a firmware update pending. What I suggest is that everyone wait for the firmware upgrade. I know that they have already made significant changes in this area in the beta firmware and may make more. So you can experiment now to get a baseline for future comparisons, but be aware that it will *definitely* change. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco k3 7 ___ 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] Measuring power output of an SSB transmitter
On a related topic, does anyone have any experience of using the usb types of 'oscilloscopes' which appear on eBay- dual channel 60MHz bandwidth and 150Mb/s sampling rate? It's a neat and cost-effective way of displaying the transmitted waveform for those of us without desk/bench room for a 'proper' scope. I've always been led to believe that sampling at twice the bandwidth is a decent decent rule of thumb and this one is better than that. I'd be grateful for any advice from someone who has one. Thanks Stephen G4SJP KX-1, K2, K3 almost! ___ 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--Trouble with Power Pole connectors
Iv'e been getting away from using Anderson Powerpole connectors and now relying on Tyco Electronics/AMP Power Lock Connectors. Essentially the same thing, but much higher quality. They will mate with the Anderson line so no problem there. A lot of people have complained at how easily the powerpoles come apart. I did some testing and found that it takes about 3 lbs of force to pull two powerpoles apart, while it takes 8 lbs for the AMP connectors. With an AMP mated to Anderson, it takes 6 lbs. With the AMP connectors, it takes considerably more force to mate them and there is a distinct snap/click sound when they go together. The pins are thicker and they have "wings" on them so they don't flop around in the housing like the Anderson ones do. Also, they don't require a roll pin to lock them together. There is a little tab on the housing that locks one half of the connector to the other. They do cost more but your getting a higher quality product in my opinion. Anyway, for those of you that have an issue with the way Anderson's "lock" together, you might want to give these a try. I get mine from Mouser. http://www.mouser.com/catalog/632/1186.PDF Eric N3EF --- On Mon, 4/28/08, Ron D'Eau Claire <[EMAIL PROTECTED]> wrote: > From: Ron D'Eau Claire <[EMAIL PROTECTED]> > Subject: RE: [Elecraft] K3--Trouble with Power Pole connectors > To: "'Robert Tellefsen'" <[EMAIL PROTECTED]>, "'Reflector Elecraft'" > > Date: Monday, April 28, 2008, 11:33 PM > Excellent question, Bob!! > > You caused me to check. I have several APP cables about, to > I hooked two of > them together and added weights to one while lifting with > the other until > they separated. > > My test pair separated at 1.2 kg or just over 2.6 lbs. I > consider that > substantial force needed to separate them. I've never > had a pair fall apart > without tugging on them with what I considered pretty > strong force. > > Clearly, something different is going on with yours or are > you are much > stronger than I. > > Ron AC7AC Be a better friend, newshound, and know-it-all with Yahoo! Mobile. Try it now. http://mobile.yahoo.com/;_ylt=Ahu06i62sR8HDtDypao8Wcj9tAcJ ___ 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
RES: [Elecraft] K3 low PEP Power on SSB
Hi friends: I faced a similar problem of low out power on ssb. On my specific case the problem was the configuration of the FL1 FRQ configuration. You must check on the filter (2,7Khz) what is the offset On my case is -0,91. If you make a configuration out of the offset freq the output power will be much lower. Best regards Oms PY5EG -Mensagem original- De: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] nome de Stewart Baker Enviada em: terça-feira, 29 de abril de 2008 13:53 Para: David Yarnes; Mike Penkas; elecraft@mailman.qth.net Assunto: Re: [Elecraft] K3 low PEP Power on SSB The real key is using an external audio generator into the mic input and seeing what comes out the other end using an oscilloscope. This removes all the issues with microphones and their setup. I agree that antenna matching can make quite a difference to the results, that is why I took the time to build an accurate dummy load consisting of 30 1.5k 2W 1% tolerance metal film resistors. Measuring the load on a VNA (Vector Network Analyser) shows worst case 1-30 MHz VSWR as 1.05. So that should be good enough. In real terms the variations seen in the Peak SSB TX signal are insignificant at the other end of a QSO, however if my old TS850S can get it right, I expect the same from my new K3. Y.M.M.V 73 Stewart G3RXQ On Tue, 29 Apr 2008 09:37:37 -0700, David Yarnes wrote: > Hi All, > > I've been watching this thread and wondering if there truly is a problem. > It seems to suggest there is, and Elecraft says they are looking into it > with a firmware update pending. But I can't help thinking that there are so > many reasons why the problem could just possibly be in the setup. The > variation in reports seems to suggest this could also be an issue. For one > thing, if the antenna isn't correctly matched, I would think there would be > some foldback. But if you are getting full output on CW, you should get > that on SSB as well. But full output on SSB isn't that easy to observe. > You may well be getting full output on SSB, but your meter won't necessarily > disclose that. This has been pointed out before. I also wonder if the > microphone settings are correct. You may think some microphone gain > setting, 10 for example, is sufficient, but just possibly it needs 12 or 15? > Just a thought. > > Another thing could be the microphone itself. In Mike's situation > (discussed by him below) for example, he indicates that he took a stock > microphone from his Kenwood TS-2000 and hooked it up. I assume he is > assuming that there is total compatibility with Kenwood microphones. I > don't know if that microphone is an electret, but if it is, I'm not sure it > really is totally compatible. The standard Kenwood wiring has the 8 volts > or so on a different pin than the Elecraft uses. I think the Kenwood is pin > 5, and the Elecraft is pin 6--or maybe I have that backwards. But there is > a difference. > > I'm only suggesting these things as a possibility--for all I know everyone > has fully considered all these issues and dealt with them correctly. In my > case, I am using the Elecraft Pro Headset (electret) via the back > connectors. As far as I can tell, I'm getting full output on SSB. The only > exception to that seems to be on the higher portion of 40 meters, where I > don't seem to be able to get quite 1:1 through the tuner. My antenna is set > for the CW portion, and so I get about 1.3 to 1 up near the high end. It > seems my SSB output is down somewhat when I operate there, but only > slightly. This is based on the RF output indication on the K3 itself. I > may be making an erroneous assumption, but I attribute that to not being > exactly matched. My reports, though, are good. > > Dave W7AQK > - Original Message - > From: "Mike Penkas" <[EMAIL PROTECTED]> > To: > Sent: Tuesday, April 29, 2008 7:58 AM > Subject: [Elecraft] K3 low PEP Power on SSB > > > I disconnected all my outboard audio gear on the K3 and connected > an Array Solutions Powermaster Meter and dummy load directly to > the K3. With the K3 set to 120 watts my keydown RF output on > 20 meters reads 116 watts. > I connected a stock hand mic that came with my Kenwood TS-2000 > to the front mic connector set to High. > With Mic gain set to 15 and comp to 0 and all equalizer settings at 0 > I show a max of 75 watts. > With the compressor turned on to a setting of 18, I show peaks of > 110 watts with alc flickering between 3 and 5 bars. > Monitored audio on a second receiver is very clean. > Mike WA8EBM > ___ > 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 low PEP Power on SSB
The K3 manual (rev C) shows 8v on pin 6 of the mic connector. See page 13. 73, Ken K3IU Paul Christensen wrote: The standard Kenwood wiring has the 8 volts or so on a different pin than the Elecraft uses. I think the Kenwood is pin 5, and the Elecraft is pin 6--or maybe I have that backwards. But there is a difference. That's news to me. Can someone confirm that the +8VDC is on another pin other than the Kenwood standard? Paul, W9AC ___ 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] Does the K2 have a built in SWR meter ?
Hello, A simple question for you, Does the K2 have a built in SWR meter ? I am going to build an ATU and I want to know if I'll need to include an SWR meter. If the K2 already has one , I will not need to. Please reply directly to me , thanks. Rob F5VHN f5vhn(at)yahoo.com (at)=@ __ Sent from Yahoo! Mail. A Smarter Email http://uk.docs.yahoo.com/nowyoucan.html ___ 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 low PEP Power on SSB
See FAQ on Elecraft Web site under Microphone connections. Bias is on pin 6 Bob Serwy - N9RS -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Paul Christensen Sent: Tuesday, April 29, 2008 12:09 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 low PEP Power on SSB > The standard Kenwood wiring has the 8 volts or so on a different pin > than the Elecraft uses. I think the Kenwood is pin 5, and the > Elecraft is pin 6--or maybe I have that backwards. But there is a difference. That's news to me. Can someone confirm that the +8VDC is on another pin other than the Kenwood standard? Paul, W9AC ___ 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 low PEP Power on SSB
The standard Kenwood wiring has the 8 volts or so on a different pin than the Elecraft uses. I think the Kenwood is pin 5, and the Elecraft is pin 6--or maybe I have that backwards. But there is a difference. That's news to me. Can someone confirm that the +8VDC is on another pin other than the Kenwood standard? Paul, W9AC ___ 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 low PEP Power on SSB
The real key is using an external audio generator into the mic input and seeing what comes out the other end using an oscilloscope. This removes all the issues with microphones and their setup. I agree that antenna matching can make quite a difference to the results, that is why I took the time to build an accurate dummy load consisting of 30 1.5k 2W 1% tolerance metal film resistors. Measuring the load on a VNA (Vector Network Analyser) shows worst case 1-30 MHz VSWR as 1.05. So that should be good enough. In real terms the variations seen in the Peak SSB TX signal are insignificant at the other end of a QSO, however if my old TS850S can get it right, I expect the same from my new K3. Y.M.M.V 73 Stewart G3RXQ On Tue, 29 Apr 2008 09:37:37 -0700, David Yarnes wrote: > Hi All, > > I've been watching this thread and wondering if there truly is a problem. > It seems to suggest there is, and Elecraft says they are looking into it > with a firmware update pending. But I can't help thinking that there are so > many reasons why the problem could just possibly be in the setup. The > variation in reports seems to suggest this could also be an issue. For one > thing, if the antenna isn't correctly matched, I would think there would be > some foldback. But if you are getting full output on CW, you should get > that on SSB as well. But full output on SSB isn't that easy to observe. > You may well be getting full output on SSB, but your meter won't necessarily > disclose that. This has been pointed out before. I also wonder if the > microphone settings are correct. You may think some microphone gain > setting, 10 for example, is sufficient, but just possibly it needs 12 or 15? > Just a thought. > > Another thing could be the microphone itself. In Mike's situation > (discussed by him below) for example, he indicates that he took a stock > microphone from his Kenwood TS-2000 and hooked it up. I assume he is > assuming that there is total compatibility with Kenwood microphones. I > don't know if that microphone is an electret, but if it is, I'm not sure it > really is totally compatible. The standard Kenwood wiring has the 8 volts > or so on a different pin than the Elecraft uses. I think the Kenwood is pin > 5, and the Elecraft is pin 6--or maybe I have that backwards. But there is > a difference. > > I'm only suggesting these things as a possibility--for all I know everyone > has fully considered all these issues and dealt with them correctly. In my > case, I am using the Elecraft Pro Headset (electret) via the back > connectors. As far as I can tell, I'm getting full output on SSB. The only > exception to that seems to be on the higher portion of 40 meters, where I > don't seem to be able to get quite 1:1 through the tuner. My antenna is set > for the CW portion, and so I get about 1.3 to 1 up near the high end. It > seems my SSB output is down somewhat when I operate there, but only > slightly. This is based on the RF output indication on the K3 itself. I > may be making an erroneous assumption, but I attribute that to not being > exactly matched. My reports, though, are good. > > Dave W7AQK > - Original Message - > From: "Mike Penkas" <[EMAIL PROTECTED]> > To: > Sent: Tuesday, April 29, 2008 7:58 AM > Subject: [Elecraft] K3 low PEP Power on SSB > > > I disconnected all my outboard audio gear on the K3 and connected > an Array Solutions Powermaster Meter and dummy load directly to > the K3. With the K3 set to 120 watts my keydown RF output on > 20 meters reads 116 watts. > I connected a stock hand mic that came with my Kenwood TS-2000 > to the front mic connector set to High. > With Mic gain set to 15 and comp to 0 and all equalizer settings at 0 > I show a max of 75 watts. > With the compressor turned on to a setting of 18, I show peaks of > 110 watts with alc flickering between 3 and 5 bars. > Monitored audio on a second receiver is very clean. > Mike WA8EBM > ___ > 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.elec
[Elecraft] K3 Front panel rattling washer
I also have the rattling washer on the headphone jack. I have been working with tech support taking measurements and checking different things. No joy so far. Everything checks out as far as the assembly goes. I just seem to have about .050" more clearance between the shoulder of the headphone jack and the FP sheet metal than is normal, and the washer rattles. I think that .050" causes the FP/DSP assembly to be a little more difficult to get the bottom screws in when installing it on the radio than if everything were fitted properly on the FP assembly. I have to press pretty firmly on the bottom of the FP assembly to get the bottom screws started in the 2D fasteners. I think one possible fix would be to use .050" shorter standoffs between the DSP board and the FP board. That would cause the shoulder of the headphone jack to be close enough to the FP sheet metal to keep the washer from rattling, and would also allow the connectors on the FP assembly to not seat quite as far down on to the mating pins of the connectors on the RF board, therefore allowing the screws for the front panel mounting to line up easier. I belive that, at least in my case, the mating connectors for the FP and RF board are bottoming out and not allowing the sheet metal to move far enough back to line up properly, thereby causing me to have to apply more pressue to get the screw holes lined up. One caution here, is that when the clearance between the DSP and the FP boards is reduced by .050", it MAY cause contact between the front of the DSP board and the back of the FP board. The clearance looks pretty minimal in some places as it is. I may try this as a LAST resort, but I am going to continue to work with K3 support to try and find the real cause of this. I may send my front panel back and let Gary look at it so he can figure this thing out. Stan W5EWA Houston, TX ___ 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 low PEP Power on SSB
Hi All, I've been watching this thread and wondering if there truly is a problem. It seems to suggest there is, and Elecraft says they are looking into it with a firmware update pending. But I can't help thinking that there are so many reasons why the problem could just possibly be in the setup. The variation in reports seems to suggest this could also be an issue. For one thing, if the antenna isn't correctly matched, I would think there would be some foldback. But if you are getting full output on CW, you should get that on SSB as well. But full output on SSB isn't that easy to observe. You may well be getting full output on SSB, but your meter won't necessarily disclose that. This has been pointed out before. I also wonder if the microphone settings are correct. You may think some microphone gain setting, 10 for example, is sufficient, but just possibly it needs 12 or 15? Just a thought. Another thing could be the microphone itself. In Mike's situation (discussed by him below) for example, he indicates that he took a stock microphone from his Kenwood TS-2000 and hooked it up. I assume he is assuming that there is total compatibility with Kenwood microphones. I don't know if that microphone is an electret, but if it is, I'm not sure it really is totally compatible. The standard Kenwood wiring has the 8 volts or so on a different pin than the Elecraft uses. I think the Kenwood is pin 5, and the Elecraft is pin 6--or maybe I have that backwards. But there is a difference. I'm only suggesting these things as a possibility--for all I know everyone has fully considered all these issues and dealt with them correctly. In my case, I am using the Elecraft Pro Headset (electret) via the back connectors. As far as I can tell, I'm getting full output on SSB. The only exception to that seems to be on the higher portion of 40 meters, where I don't seem to be able to get quite 1:1 through the tuner. My antenna is set for the CW portion, and so I get about 1.3 to 1 up near the high end. It seems my SSB output is down somewhat when I operate there, but only slightly. This is based on the RF output indication on the K3 itself. I may be making an erroneous assumption, but I attribute that to not being exactly matched. My reports, though, are good. Dave W7AQK - Original Message - From: "Mike Penkas" <[EMAIL PROTECTED]> To: Sent: Tuesday, April 29, 2008 7:58 AM Subject: [Elecraft] K3 low PEP Power on SSB I disconnected all my outboard audio gear on the K3 and connected an Array Solutions Powermaster Meter and dummy load directly to the K3. With the K3 set to 120 watts my keydown RF output on 20 meters reads 116 watts. I connected a stock hand mic that came with my Kenwood TS-2000 to the front mic connector set to High. With Mic gain set to 15 and comp to 0 and all equalizer settings at 0 I show a max of 75 watts. With the compressor turned on to a setting of 18, I show peaks of 110 watts with alc flickering between 3 and 5 bars. Monitored audio on a second receiver is very clean. Mike WA8EBM ___ 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] Elecraft K2, KPA-100, KAT-100, etc for sale!!!!!!!
For sale Elecraft K2 with KPA-100, etc with the following options listed below. All are in separate EC-2 cases. I would like to sell "ALL" in one deal but will consider splitting up. However, if I split up the set the radio goes last! Pictures available at request. You can see pictures at my website at: http://n4wyk.com/elecraft . - K2 HF Transceiver S/N 2390 - $1000 shipped - Kit and all accessories NEW = $1263.00 new without shipping (Has had all updates to include version B, matched xtals, VCO temp compensation, pa shield, etc) Includes: - KIO2 -K2 AUX I/O RS-232 Interface - KNB2 -K2 Noise Blanker - KSB2 -K2 SSB Option - K160RX - 160m Option - K60XV - 60m and transverter interface option - KDSP2 - Advanced Internal DSP Filter/Clock - Filters Aligned with Spectrogram (With help of W3FPR at his home) - Standard knob "BUT" unless another one was made it is one of 2 with the Elecraft emblem on the knob - Serial rs232 computer interface cable, power cables included with entire package - All manuals included. All in excellent shape and never around smoke. Is 9 out of 10 Condition - original builder owner -- - KPA100 Internal 100 Watt PA in separate EC2 case - $219.00 new; Sell for $175 shipped -- - KAT-100-2 - 100w ATU with EC2 Panels - $399.00 new; Sell for $320 shipped -- - Astron 25A PS Power Supply in EC2 Case with meters - $59 for case plus PS $100.00 new; Sell for $125 shipped -- - Amplified Speaker in matching EC2 Case built from plans of Dave White, VE6DRW - $90 new; Sell for $75 shipped -- - MH2 Elecraft hand microphone with Heil element - $59.00; Sell for $45 shipped -- - MD2 Elecraft microphone with Heil element and desk stand - $100; Sell for $75 shipped -- - K2 HF Transceiver S/N 2390 $1263 new; Sell for $1000 shipped -- FOR EVERYTHING! $1600 shipped CONUS. I will take paypal plus 3%. REMEMBER! IF SPLIT UP THEN THE RADIO GOES LAST! Rick Tilton WK4R [EMAIL PROTECTED] No virus found in this outgoing message. Checked by AVG. Version: 7.5.524 / Virus Database: 269.23.5/1399 - Release Date: 4/26/2008 2:17 PM ___ 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 IMD measurement
Unless Clint has updated the firmware it's for PSK. However, the K3 also has a built-in PSK generator, so you can just go into PSK DATA D mode and not send anything with the paddles, adn it will send an idle tone, which is all zeros (crossings). Leigh/WA5ZNU G4ILO wrote: After reading a recent post referring to the KK7UQ IMD meter I ordered one. It received unanimous rave reviews on eham.net and I am really looking forward to receiving it. Glenn, who runs US Interface, who sells it, is a pleasure to deal with, too. A thought just occurred to me, that someone who already owns one and has a K3 might be able to answer. Since the K3 has a built-in two tone generator for making PA IMD measurements, could the KK7UQ IMD meter be used to measure SSB IMD performance too, or is it calibrated purely for PSK use? - 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] K3 Headphone jack/front panel gap
Chuck, AE4CW, posted: " Ron, I too had the headphone jack problem. After talking with tech support I reveisited the assembly and am certain it's perfect, but there is still a gap between the shoulder of the headphone jack and the front panel. I measured it with a shim guage but, unfortunately have forgotten the number. In any case I found a thin washer (from another 1/4" jack) that filled the gap perfectly and intalled it over the jack threads behind the panel. Perhaps there was as parts variation from the vendor that could account for the gap." Chuck et al I had the exact same issue with the headphone jack and the "thick washer" used to space it from the front panel. Everything has been checked and double checked and the thick spacing washer still rattles between the board mounted headphone jack and the front panel. I posted my concern here months ago and received responses like Chuck did above. On the other hand, I received half a dozen direct emails from other K3 owners who experienced the loose spacing washer. All seemed to feel that their fitting of the front panel was correct in every other area. I think it's an issue other than a poorly fitted front panel or binding mic connector. My 2 cents. Terry, WØFM K3/100 #474 -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of [EMAIL PROTECTED] Sent: Tuesday, April 29, 2008 2:38 AM To: elecraft@mailman.qth.net Subject: Elecraft Digest, Vol 48, Issue 48 Send Elecraft mailing list submissions to elecraft@mailman.qth.net To subscribe or unsubscribe via the World Wide Web, visit http://mailman.qth.net/mailman/listinfo/elecraft or, via email, send a message with subject or body 'help' to [EMAIL PROTECTED] You can reach the person managing the list at [EMAIL PROTECTED] When replying, please edit your Subject line so it is more specific than "Re: Contents of Elecraft digest..." ___ 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] Monitoring yourself
Gee, I thought this was SHORT wave and WIRELESS communication :-) 73, Bob N6WG - Original Message - From: "G4ILO" <[EMAIL PROTECTED]> To: Sent: Tuesday, April 29, 2008 2:55 AM Subject: Re: [Elecraft] Monitoring yourself > > > K3KO wrote: > > > > Try listening to yourself on a web SDR. > > > > http://websdr.ewi.utwente.nl:8901/ > > > > One can listen with the above link on 40 and 80M. It is tunable and does > > CW.SSB and I guess digital modes. Bandwidth is also adjustable. > > > > > This is a great link. I'm amazed how low the latency is. I can't figure out > how to decode data modes, though, although the page suggests it's possible. > > I love the picture of the hardware at the bottom of this page: > http://websdr.ewi.utwente.nl:8901/info.html . > > - > 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/Monitoring-yourself-tp16918110p16957081.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
[Elecraft] K3 low PEP Power on SSB
I disconnected all my outboard audio gear on the K3 and connected an Array Solutions Powermaster Meter and dummy load directly to the K3. With the K3 set to 120 watts my keydown RF output on 20 meters reads 116 watts. I connected a stock hand mic that came with my Kenwood TS-2000 to the front mic connector set to High. With Mic gain set to 15 and comp to 0 and all equalizer settings at 0 I show a max of 75 watts. With the compressor turned on to a setting of 18, I show peaks of 110 watts with alc flickering between 3 and 5 bars. Monitored audio on a second receiver is very clean. Mike WA8EBM ___ 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] WA2EBY MOSFET AMP
Does anyone have any experience with the "MOSFET" amp? I had built one prior to getting my K2. It still needs an enclosure and power supply. Hopefully I can finish it this weekend. The bands are just too bad for QRP right now! - Damon Wascom KC5CQW Elecraft K2 #:6351 Build: 12/28/07-01/01/08 -- View this message in context: http://www.nabble.com/WA2EBY-MOSFET-AMP-tp16960885p16960885.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 Low PEP Power on SSB
That's good news as my 'Worry Beads' are nearly worn out :-) 73 Stewart G3RXQ On Tue, 29 Apr 2008 09:11:48 -0400, Roy Morris wrote: > I have noticed the PEP power on both my PowerMaster and my LP-100 meters to show around > 50 watts in SSB mode. Lyle says this is being addressed in the new firmware that very > soon is to be released. I am looking forward to seeing my peak reading meters showing > approximately 90 watts on peaks like my Omni VII, IC-718 and IC-706 show. If you are > seeing low SSB output with five ALC bars, help is on the way. Roy Morris W4WFB K3 > #323 > ___ > 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] Measuring power output of an SSB transmitter
Hi all, Just for the record, I determined empirically that I needed a compressor setting of 20 to get a reasonable amount of talk power. I have been using this setting since my first week of operation and I am still getting good audio reports. My "indication" of "talk power" is from watching the average reading analog meter in my tuner. With this said I have visibly more talk power with the K3 than I had with my IC-718 with its fixed compressor turned on. Some IC-718 owners describe the compressor as preset from the factory as overly aggressive and recommend touching up an internal adjustment. I never found mine excessive and I always got good audio reports with the 718. One of these days I will take a scope home and check if the peak power indeed varies with the compressor setting, which of course it should not. AB2TC - Knut Stewart G3RXQ wrote: > > I have now repeated the test with my 2 tone external source, and > get similar results to the microphone "Wurlo" test. The PEAK > signal amplitude is influenced by the Compression (Clipping ?) > > Approaching the anniversary of the product release, it's 'bout > time the SSB transmit side of the K3 was sorted out. > Brings back memories of the KSB2 saga ! > > 73 > Stewart G3RXQ > On Tue, 29 Apr 2008 03:46:46 -0700 (PDT), G4ILO wrote: >> >> >> Stewart G3RXQ wrote: >> >>> My PEAK power is down by about 50% as measured on an 200MHz >>> oscilloscope when the COMP is set to 0. This can't be right.. >>> >> I don't have your measuring equipment, Stewart, but something > doesn't seem >> right to me either. >> >> The power output doesn't seem consistent even when you don't > change the >> settings. With MIC=60 CMP=0 and PWR=12.0 if I "aaalo" into the > mic, my >> average reading power meter normally shows about 1W. But > sometimes it holds >> at 2W or even 3W and sometimes a bit less. I have also observed > the meter >> steady at say 2W then after about a second drop back to 1W, even > though I >> haven't changed the pitch or tone of my "...". I realize > this is not a >> scientific test, but I don't believe that there is that much > difference >> between my consecutive repetitions of "aaalo." >> >> I need CMP=20 to get a reasonable average level on speech. > Without any >> compression the talk power is too low. Even my FT-817 with 5W > pep output can >> manage an average of 1W on speech and it doesn't have a speech > compressor. > > -- View this message in context: http://www.nabble.com/K3%3A-two-problems-tp16943980p16960444.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 Low PEP Power on SSB
I have noticed the PEP power on both my PowerMaster and my LP-100 meters to show around 50 watts in SSB mode. Lyle says this is being addressed in the new firmware that very soon is to be released. I am looking forward to seeing my peak reading meters showing approximately 90 watts on peaks like my Omni VII, IC-718 and IC-706 show. If you are seeing low SSB output with five ALC bars, help is on the way. Roy Morris W4WFB K3 #323 ___ 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] Monitoring yourself
At 05:55 AM 4/29/2008, you wrote: K3KO wrote: > > Try listening to yourself on a web SDR. > > http://websdr.ewi.utwente.nl:8901/ > ... I can't figure out how to decode data modes, though, although the page suggests it's possible Julian, G4ILO I started up MMTTY here while listening to the audio of some RTTY stations with the web radio and was able to decode them without doing anything special. No humps in the MMTTY display, but they printed. Jerry W4UK ___ 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] Measuring power output of an SSB transmitter
I have now repeated the test with my 2 tone external source, and get similar results to the microphone "Wurlo" test. The PEAK signal amplitude is influenced by the Compression (Clipping ?) Approaching the anniversary of the product release, it's 'bout time the SSB transmit side of the K3 was sorted out. Brings back memories of the KSB2 saga ! 73 Stewart G3RXQ On Tue, 29 Apr 2008 03:46:46 -0700 (PDT), G4ILO wrote: > > > Stewart G3RXQ wrote: > >> My PEAK power is down by about 50% as measured on an 200MHz >> oscilloscope when the COMP is set to 0. This can't be right.. >> > I don't have your measuring equipment, Stewart, but something doesn't seem > right to me either. > > The power output doesn't seem consistent even when you don't change the > settings. With MIC=60 CMP=0 and PWR=12.0 if I "aaalo" into the mic, my > average reading power meter normally shows about 1W. But sometimes it holds > at 2W or even 3W and sometimes a bit less. I have also observed the meter > steady at say 2W then after about a second drop back to 1W, even though I > haven't changed the pitch or tone of my "...". I realize this is not a > scientific test, but I don't believe that there is that much difference > between my consecutive repetitions of "aaalo." > > I need CMP=20 to get a reasonable average level on speech. Without any > compression the talk power is too low. Even my FT-817 with 5W pep output can > manage an average of 1W on speech and it doesn't have a speech compressor. > > After doing these tests I connected the antenna again and the power meter on > the MFJ tuner was showing a low reading. I put the PM20 back and sure > enough, the power was low. No control on the radio was changed. I twiddled > the power control down and then back up to 12.0 and full power was restored. > Go figure. > > - > 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] Monitoring yourself
yes I tried yesterday, I'm amazed at how quite I sounded - almost in audible at 100W. Might have been bad conditions - it was very quiet - I'll try again sometime. 73 de M0XDF, K3 #174 -- Experience is that marvellous thing that enables you to recognize a mistake when you make it again. -Franklin P. Jones On 29 Apr 2008, at 10:55, G4ILO wrote: K3KO wrote: Try listening to yourself on a web SDR. http://websdr.ewi.utwente.nl:8901/ One can listen with the above link on 40 and 80M. It is tunable and does CW.SSB and I guess digital modes. Bandwidth is also adjustable. This is a great link. I'm amazed how low the latency is. I can't figure out how to decode data modes, though, although the page suggests it's possible. I love the picture of the hardware at the bottom of this page: http://websdr.ewi.utwente.nl:8901/info.html . ___ 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] Measuring power output of an SSB transmitter
Stewart G3RXQ wrote: > > My PEAK power is down by about 50% as measured on an 200MHz > oscilloscope when the COMP is set to 0. This can't be right.. > I don't have your measuring equipment, Stewart, but something doesn't seem right to me either. The power output doesn't seem consistent even when you don't change the settings. With MIC=60 CMP=0 and PWR=12.0 if I "aaalo" into the mic, my average reading power meter normally shows about 1W. But sometimes it holds at 2W or even 3W and sometimes a bit less. I have also observed the meter steady at say 2W then after about a second drop back to 1W, even though I haven't changed the pitch or tone of my "...". I realize this is not a scientific test, but I don't believe that there is that much difference between my consecutive repetitions of "aaalo." I need CMP=20 to get a reasonable average level on speech. Without any compression the talk power is too low. Even my FT-817 with 5W pep output can manage an average of 1W on speech and it doesn't have a speech compressor. After doing these tests I connected the antenna again and the power meter on the MFJ tuner was showing a low reading. I put the PM20 back and sure enough, the power was low. No control on the radio was changed. I twiddled the power control down and then back up to 12.0 and full power was restored. Go figure. - 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%3A-two-problems-tp16943980p16957616.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
FW: [Elecraft] K3 #764 experience and critique
Shure... based on my emails with elecraft i thought i am the only one with this 'features'... ;o) To be honest these issues are not really a big problem for me. Overall this is a unbelievable piece of hardware ! 73 de Thomas, DM7TN -Original Message- From: Windy Dankoff [mailto:[EMAIL PROTECTED] Sent: Tuesday, April 29, 2008 9:19 AM To: Thomas Norff Subject: Re: [Elecraft] K3 #764 experience and critique Thanks very much, Thomas! Will you please post your reply to the group? I think it will help confirm the need to make some improvements. 73 de Windy KM5Q On Apr 28, 2008, at 11:36 PM, Thomas Norff wrote: > Hi Windy, > > maybe i can share my experiences building my K3 #78. > > point 3: i had the same issue and solved it by replacing the inside- > tooth lock washer with the second nut. That means i first installed > the nut to the encoder and the second one as mentioned in the manual. > This way the encoder is fixed to the front panel. Like it is done with > the VFO B endcoder. The encoder shaft will be 'shorter' and you have > to take care while mounting the knob cause you are missing the second > nut as an arrester. Check the encoder pins ! > > point 4: same here... if you swing the K3 you can hear the large > washer...ignored that... maybe another small washer can prevent that ? > > point 9: i had the chance to check mine with a quite accurate > measurement equipment. At 14.200 MHz i am 7Hz off !! > The alignment method is working... i used a local AM broadcast > station. > > The only issue with my K3 is a not working LED (CUT-LO-LED). The next > time i disassemble it for including the second receiver i will fix > this. > > 73 de Thomas, DM7TN > > -Original Message- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of KM5Q > Sent: Monday, April 28, 2008 8:17 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] K3 #764 experience and critique > > First, I'm delighted with the whole K3 experience. It's a brilliant > product, worth the wait. > > I have a few issues and suggestions: > > 1. Several times I found myself doing a complex assembly step in my > hands while reading the instructions. An important point would show up > late in the paragraph, and I wished I had read it all first (but I > couldn't resist). If important points were emphasized in BOLD print, I > would have been more likely to read them first. > > 2. The final multi-plugging of the front panel was the only challenge > I experienced. I knew it would be tricky, after reading about it in > the reflector. Because I knew this, I took extra time and did it with > confidence. Had I NOT known it was tricky, I would have felt clumsy > and frustrated. I suggest noting in the instructions that this IS a > tricky step and if the builder is getting tired, take a break first, > and take it SLOW. > > 3. VFO A encoder uses an inside-tooth lock washer on each side of its > mount. > This caused mine to come out slightly off-90° when tightened (using a > box-end wrench). I noticed it only when I mounted the knob with the > felt washer and it rubbed on one side. I spaced it out slightly > further with cardboard. It's OK, but this could have been avoided > somehow. > > 4. Headphone jack on front panel isn't tight enough. Instructions are > to tighten the ring-nut only finger-tight. I have pretty strong > fingers, but that doesn't do the trick. If I use a hex-nut, will it > squeeze the panel too much? > > 5. K3 is advertised as a no-solder kit, so it should not require > soldering (or a $100 crimp tool) to make the Powerpole connection. > That should be done at the factory. > > I soldered mine, using high temp. quickly, so it wouldn't wick much > solder up the cable. A builder who does not have good soldering skills > is likely to have trouble. > > 6. KUSB adapter instructions make no mention of Mac application. > They should > mention that the Prolific.com site has driver download for Mac OSX as > well as other PCs, and that it is necessary. > > 7. When I turn down the compression, the power goes down with it. It > should be equalized. > > 8. When I tune out of a ham band to listen elsewhere, then hit band > switch, band switch will not return to the nearby ham band, but to the > out- of-band frequency. Others reported this a few days ago. I expect > that will get fixed in firmware. > > 9. I did frequency calibration by zero-beat method with WWV. I tuned > the wrong way and didn't know it would take many turns. I didn't write > down the original setting, so I got "lost". I waited until I had a > steadier WWV signal, then went in the other direction and got it > perfect. I suggest that the instructions say that it may take many > turns of the knob, and that you should write down the original setting > first. > > In conclusion, the only issue I'm left with is the loose headphone > jack. Not too bad! > > I have a Kenwood MC-43S fist mike with the 8-pin connector standard.
Re: [Elecraft] Monitoring yourself
K3KO wrote: > > Try listening to yourself on a web SDR. > > http://websdr.ewi.utwente.nl:8901/ > > One can listen with the above link on 40 and 80M. It is tunable and does > CW.SSB and I guess digital modes. Bandwidth is also adjustable. > > This is a great link. I'm amazed how low the latency is. I can't figure out how to decode data modes, though, although the page suggests it's possible. I love the picture of the hardware at the bottom of this page: http://websdr.ewi.utwente.nl:8901/info.html . - 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/Monitoring-yourself-tp16918110p16957081.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 IMD measurement
After reading a recent post referring to the KK7UQ IMD meter I ordered one. It received unanimous rave reviews on eham.net and I am really looking forward to receiving it. Glenn, who runs US Interface, who sells it, is a pleasure to deal with, too. A thought just occurred to me, that someone who already owns one and has a K3 might be able to answer. Since the K3 has a built-in two tone generator for making PA IMD measurements, could the KK7UQ IMD meter be used to measure SSB IMD performance too, or is it calibrated purely for PSK use? - 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-IMD-measurement-tp16956683p16956683.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 - Dead RX after TX
Many thanks to all who responded either on or off the reflector. It would seem that no one else can replicate the problem of RX loss after TX. Not sure where to take this now, as although there have been whispers within the Elecraft inner circle that others have reported unexplained loss of receive, I can't get a straight answer. 73 Stewart G3RXQ >> -Original Message- >> From: [EMAIL PROTECTED] >> [mailto:[EMAIL PROTECTED] On Behalf Of Stewart Baker >> Sent: Monday, April 28, 2008 1:30 PM >> To: Elecraft Reflector >> Subject: [Elecraft] K3 - Dead RX after TX >> >> >> Hi All, >> >> I have been experiencing a strange problem on my K3 where the >> receiver is sometimes 'dead' after transmit. This seems to be tied >> in with the MCU control of the DSP. >> >> To prove that this is either unique or not to my unit, I would be >> grateful if fellow K3 owners could try this quick test. >> >> In particular I would like to hear from Beta Testers as to whether >> they can replicate this problem with the next (unreleased) >> firmware. >> >> POWER >> 80m LSB 3780 >> NOR >> LO CUT=0.15 >> SAV ALT1 >> NOR >> TX ON/OFF >> ALT1 >> TX ON/OFF >> Receive may be dead at this point >> >> If not continue with >> Select USB >> ALT1 >> TX ON/OFF >> Receive dead >> >> Switching bands, modes or NOR always restores receiver. >> >> Many thanks in advance. >> >> 73 >> Stewart G3RXQ >> ___ >> 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] Measuring power output of an SSB transmitter
My PEAK power is down by about 50% as measured on an 200MHz oscilloscope when the COMP is set to 0. This can't be right.. 73 Stewart G3RXQ On Mon, 28 Apr 2008 22:25:36 -0700 (PDT), Paul G4LNA wrote: > > I quite agree with you Brian, I didn't think there was any other way of > monitoring SSB reliably. I've always used a scope way back when I used to > build AM transmitters and I have one permanently connected so I can keep an > eye on what's going on, meters tell lies I find. > > 73 Paul G4LNA. > > > Brian Lloyd-6 wrote: > >> There is no substitute for an oscilloscope. There are precious few >> meters that will read true peak power. Also, no meter is going to show >> you peak compression or outright flat-topping (clipping) like a 'scope. >> >> Someone mentioned that their power output went down when they turned >> the compression down and would Elecraft make power output remain >> constant as compression is reduced. Well, the power output (average) >> is *SUPPOSED* to decrease when you reduce compression. When speech >> compression is reduced, your peak-to-average power ratio increases. >> The peaks remain just as high but the average power is considerably >> less. This is another reason to want a 'scope to check your rig. >> >> BTW, how many people have done a two-tone test or a double trapezoid >> test for linearity? How many people even know what I am talking >> about? :-) >> >> (My first HF transmitter was a Central Electronics Multi-Phase exciter >> with a whopping 10W of output. When I got done making that work again >> you can bet I understood single-sideband. :-) >> >> Brian Lloyd >> Granite Bay Montessori School 9330 Sierra College Bl >> brian AT gbmontessori DOT com Roseville, CA 95661 >> +1.916.367.2131 (voice)+1.791.912.8170 (fax) >> >> PGP key ID: 12095C52A32A1B6C >> PGP key fingerprint: 3B1D BA11 4913 3254 B6E0 CC09 1209 5C52 A32A 1B6C >> >> >> ___ >> 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: two problems
quick addon. I found something weird by experimenting: oe9fwv wrote: > > today I observed a problem with my K3 ATU. > > on some bands the ATU does not find a fix. > I connected the transceiver to a 50 ohm 100 Watt dummy load. > > I tried on > > 1850 - no fix - rattle rattle - display says: - . - with Xmit: 1.0 - 1 > 3700 - quick fix 1.0 - 1 > 5330 - no fix but when I press transmit it shows 1.2 - 1 1.0 ATU in > bypass > 7080 - no fix with xmit 1.0 - 1 > 10142 - no fix with xmit 1.4 - 1 (tuner inline - 1.0 - 1 tuner bypass) > 14142 - quick fix 1.0 - 1 > 18068 - quick fix 1.0 - 1 > 21000 - quick fix 1.0 - 1 > 24890 - quick fix 1.0 - 1 > 28000 - quick fix 1.0 - 1 > 50750 - quick fix 1.0 - 1 > > I can "fix" the problem, when I change the frequency offset of my 2.7 kHz filter. On the filter the offset frequency is marked -0.89. If I set the filter offset to less than -.70 the tuner finds a match on all bands tested. Regarding the mic gain / ALC problem I'll go to a friend with equipment and look at the spectrum. I agree that also with a good peak wattmeter it is not possible to see the spectrum ;-) 73! de Werner OE9FWV -- View this message in context: http://www.nabble.com/K3%3A-two-problems-tp16943980p16953710.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
