Re: [Elecraft] My K3's hissy and noisy audio
That's my view as well. Stewart G3RXQ On Sun, 5 Apr 2009 17:09:08 -0400, Steve Ellington wrote: > Perhaps the band noise is more obvious in the K3 because the low frequency > audio is restricted causing the noise to be distributed over a more narrow > range. This lack of bass tends to induce for ear fatigue. > Steve Ellington > n...@carolina.rr.com > - Original Message - > From: "ab2tc" > To: > Sent: Sunday, April 05, 2009 4:42 PM > Subject: Re: [Elecraft] My K3's hissy and noisy audio >> >> >> Hi all, >> >> In my view the only "problem" with the K3 being "hissy" is the AGC >> threshold. On 20m and below even with AGC threshold set to the maximum >> (008), just the atmospheric noise is at or above the threshold and this is >> indeed tiring to listen to. I solve the problem by turning down the RF >> gain; I notice many others instead turn the AGC slope way up (actually low >> number), which has a similar effect for strong signals. Very high on my >> wish list is for at least another 5dB increase in the AGC threshold. The >> present range 002-008 is just not enough. >> >> >>>Sorry to pop this balloon but I'm in Arizona, USA and I concur. >> >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html >> >> >> - >> AB2TC - Knut >> -- >> View this message in context: >> http://n2.nabble.com/My-K3%27s-hissy-and-noisy-audio-tp2588008p2590003.html >> Sent from the Elecraft mailing list archive at Nabble.com. >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] OT Relays with diodes built in (inductive kick)
A "catcha" to be aware of if you are building kit that uses DIL plugin relays. Some of these relays have diodes already fitted internally across the coil. I have built a couple of projects on PCB's, and wondered why the relay would not operate. Reversing the coil connections got things working. 73 Stewart G3RXQ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3's hissy and noisy audio
Audio response seems to be a difficult area for Elecraft. SSB from the K2 often received poor reports because of the excessive LF response in the TX audio stages. It could be cured by reducing coupling capacitor values. The K3 RX audio appears to need the opposite approach. Stewart G3RXQ On Mon, 6 Apr 2009 06:54:21 -0400, Paul Christensen wrote: >> Perhaps the band noise is more obvious in the K3 because the low frequency >> audio is restricted causing the noise to be distributed over a more narrow >> range. This lack of bass tends to induce for ear fatigue. >> Steve Ellington > > I agree with Steve on this one. Once more low-end was rolled into my audio > hardware changes, I noticed a significant reduction in my own listener > fatigue. > > Others have noted the K3's audio frequency response variance across > different headphone models, most notably the Heil product. The K3's > headphone circuit uses 10 uF of series capacitance from the headphone amp to > each of the headphone coils. > > For the moment, assume that your headphones are 32-ohms (ref 100Hz). What > is the best possible low-end response from the K3? The answer is 500 Hz > @ -3dB. That part of the circuit needs some help. With a headphone Z even > lower toward 8-ohms, the attenuation of bass response is worse. > > Now upgrade the series caps to 330 uF and re-run the calculation. With > 32-ohm phones (ref 100 Hz), the frequency response improves to 15 Hz. Now > that's t real Hi-Fi on par with what Icom delivers and the difference is > immediately noticeable to anyone -- not just the folks with "golden ears." > > Finally, compare the result of the modified K3 with the Icom '7700 or '7800. > > Paul, W9AC > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: sub-rx won't work
Guys, i still could not solve the problem with the sub-rx. Over the weekend i opened the K3 and checked all TMP-cables, they are in their correct places. The pins of the sub-out and the sub-in board are correctly mated with their sockets. The Aux-DSP ist seated correctly etc etc.. In short, to me everything looks fine. I carefully read the manual in order not to make any mistakes with the antenna-connections and/or the selections of the antenna inputs. The sub-rx *will not work*. I have : Noise , but no band noise. Faint signals, but this might be a leakage from the main-rx. A 2.8khz & 400hz filter in position FL 2 & 3 , so even if i counted the positions backwards , one of them should work. So, what can i do? Can i swap some connections to pin down the defective board? -- 73, DM4iM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 audio
Evert Bakker (PA2KW) wrote: > For me, I'm quite sure it has to do with the digitalization. That sound is > far from natural and is ADDITIONAL to the normal audio signal. That addition > sounds sharp, metallic, like these "extreme low cost" jingle bell" sounds in > all kind of gifts (sorry for the comparison between these two). But it is > "next" to the normal signal and many db's down. K8ZOA replied: There is a 3.9 KHz digitization artifact about 78 dB down from normal audio level. Is this what you hear? I suspect Jack has identified Evert's problem. The 3.9 kHz artifact should sound exactly as Evert describes. To check, Evert could try setting RX EQ 8 (3.2 kHz) to -16. If this reduces the sound he's hearing, it should prove that the 3.9 kHz artifact is causing his problem. You should not have any reduction in intelligibility for SSB contests by setting RX EQ 8 as above. For CW, I normally set RX EQ 1-2 and 5-8 at -16 dB, since I normally use a 300-440 Hz pitch. 73, Bill W4ZV -- View this message in context: http://n2.nabble.com/K3-audio-tp2590280p2592702.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3's hissy and noisy audio
> Perhaps the band noise is more obvious in the K3 because the low frequency > audio is restricted causing the noise to be distributed over a more narrow > range. This lack of bass tends to induce for ear fatigue. > Steve Ellington I agree with Steve on this one. Once more low-end was rolled into my audio hardware changes, I noticed a significant reduction in my own listener fatigue. Others have noted the K3's audio frequency response variance across different headphone models, most notably the Heil product. The K3's headphone circuit uses 10 uF of series capacitance from the headphone amp to each of the headphone coils. For the moment, assume that your headphones are 32-ohms (ref 100Hz). What is the best possible low-end response from the K3? The answer is 500 Hz @ -3dB. That part of the circuit needs some help. With a headphone Z even lower toward 8-ohms, the attenuation of bass response is worse. Now upgrade the series caps to 330 uF and re-run the calculation. With 32-ohm phones (ref 100 Hz), the frequency response improves to 15 Hz. Now that's t real Hi-Fi on par with what Icom delivers and the difference is immediately noticeable to anyone -- not just the folks with "golden ears." Finally, compare the result of the modified K3 with the Icom '7700 or '7800. Paul, W9AC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3's hissy and noisy audio
AGC settings and AF gain interact. With no signal you may have lots or little audio. Also, full audio can be at 20% of 50% gain. When looking at the spectrum of a CW signal one clearly see the third and the fifth harmonics. Not sure whether they are real or artifacts of a sound card but K3 sounds a bit harsher than K2. These harmonics were part of a thread here by hams from the UA land; it was followed by the AF mod.. I am not sure whether my radio has already this fix(# around 2200). Ignacy I have very sensitive in-ear monitors. The K3 (and the Orion, and possibly other radios) has significant hiss. I inserted an attenuator and knocked the hiss down below my ability to detect it. There is plenty of audio range remaining. You may find 10 to 20 dB will help. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/My-K3%27s-hissy-and-noisy-audio-tp2588008p2592780.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: sub-rx won't work
That sounds like the problem I had - the leads on T1 on the sub-in module were not soldered, some paint had been left on the leads. I cleaned the paint off and resoldered them. Paul W2LE DM4iM wrote: > Guys, i still could not solve the problem with the sub-rx. > Over the weekend i opened the K3 and checked all TMP-cables, > they are in their correct places. > The pins of the sub-out and the sub-in board are correctly mated with > their sockets. > The Aux-DSP ist seated correctly etc etc.. > In short, to me everything looks fine. > I carefully read the manual in order not to make any mistakes with the > antenna-connections and/or the selections of the antenna inputs. > > The sub-rx *will not work*. > > I have : > > Noise , but no band noise. > Faint signals, but this might be a leakage from the main-rx. > A 2.8khz & 400hz filter in position FL 2 & 3 , so even if i counted the > positions backwards , one of them should work. > > So, what can i do? Can i swap some connections to pin down the defective > board? > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 band buttons
Hi Doug, Thanks for the contest Qs! Always nice to pick up the EI multiplier. As to the band button discussion, depending on your logging software, band and mode switching is easily accomplished by typing in where you want to go in N1MM. I rarely use the band or mode switches on my K3 when playing. It took me a while to "discover" this method, and now I'm not sure how I lived without it ;o) I believe that you can even pick how the software determines mode in the setup panel. It's a breeze to move between CW and SSB. Adding RTTY is a bit more complicated as you need to open the digital interface. So far I'm just SO1R and there's enough going on there that adding another monitor look like a useful option, if not another computer! It's easy enough to get the contest desk cluttered pretty quickly... C'ya in CQ WPX CW I hope... Maunder Minimum or not ;o) 73, Julius Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party: Sunday, 6 Sept 2009 http://www.tnqp.org/ Elecraft K2/100 #4455 Elecraft K3/100 #366 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3's hissy and noisy audio
Paul I can see how this mod would improve headphone audio but what about low frequency audio for the speaker(s)? Steve Ellington n...@carolina.rr.com - Original Message - From: "Paul Christensen" To: Sent: Monday, April 06, 2009 6:54 AM Subject: Re: [Elecraft] My K3's hissy and noisy audio >> Perhaps the band noise is more obvious in the K3 because the low >> frequency >> audio is restricted causing the noise to be distributed over a more >> narrow >> range. This lack of bass tends to induce for ear fatigue. >> Steve Ellington > > I agree with Steve on this one. Once more low-end was rolled into my > audio > hardware changes, I noticed a significant reduction in my own listener > fatigue. > > Others have noted the K3's audio frequency response variance across > different headphone models, most notably the Heil product. The K3's > headphone circuit uses 10 uF of series capacitance from the headphone amp > to > each of the headphone coils. > > For the moment, assume that your headphones are 32-ohms (ref 100Hz). What > is the best possible low-end response from the K3? The answer is 500 Hz > @ -3dB. That part of the circuit needs some help. With a headphone Z > even > lower toward 8-ohms, the attenuation of bass response is worse. > > Now upgrade the series caps to 330 uF and re-run the calculation. With > 32-ohm phones (ref 100 Hz), the frequency response improves to 15 Hz. Now > that's t real Hi-Fi on par with what Icom delivers and the difference is > immediately noticeable to anyone -- not just the folks with "golden ears." > > Finally, compare the result of the modified K3 with the Icom '7700 or > '7800. > > Paul, W9AC > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3's hissy and noisy audio
Steve, Someone else responded to me in private with the same question. Here's my answer: "The K3 speaker output has something like 470 uF of C in series with the speaker output amp. That's reasonably adequate. The problem with the K3 speaker's bass frequency response is not the electrical circuit. Rather, the K3's speaker has low-end response limitations due to the fact that the speaker is in not encased by an adequate baffle. The back wave of any speaker driven by a coil is 180-degrees out of phase with the forward wave. Although the K3's speaker is mounted to a metal surface, too many openings near it allow for the short circuit of the acoustical front and back waves at low frequencies. The degree to which acoustical wave cancellation occurs is a function of distance. At low frequencies, quite a bit of isolation distance is required. Typically, commercial speakers are encased (although some are ported to a resonance) to produce a virtual infinite distance through the use of the so-called infinite baffle. We've all done this experiment before at some point in our electronics education: Simply place an open speaker driver on a desk just sitting there and listen to low frequency tones. Then, take that same speaker and place it in an enclosure, or behind a large surface. The speaker placed by itself on the desktop sounds vastly inferior in bass response when compared to the same speaker enclosed in a box or placed behind a surface like wall or ceiling. For the K3, the fix is relatively easy. Simply enclose the back of the speaker driver with a solid substance like plastic. I used the top of a spray paint can and modified it slightly to fit around the K3's support truss." Incidentally, there's another interesting acoustical mechanism that assists our brains with bass content. If it were not for this effect, our perception of low-frequency content would be worse than it is when we listen to small speakers whose low-end response is restricted. In effect, our brains create a missing fundamental when it detects the presence of multiple harmonics of a single fundamental that should be there in the first place. Among auditory professionals, this effect is referred to as "Phenomenon of the Missing Fundamental." http://www.phys.uconn.edu/~gibson/Notes/Section7_4/Sec7_4.htm Paul, W9AC - Original Message - From: "Steve Ellington" To: "Paul Christensen" ; Sent: Monday, April 06, 2009 9:31 AM Subject: Re: [Elecraft] My K3's hissy and noisy audio > Paul > I can see how this mod would improve headphone audio but what about low > frequency audio for the speaker(s)? > Steve Ellington > n...@carolina.rr.com > - Original Message - > From: "Paul Christensen" > To: > Sent: Monday, April 06, 2009 6:54 AM > Subject: Re: [Elecraft] My K3's hissy and noisy audio > > >>> Perhaps the band noise is more obvious in the K3 because the low >>> frequency >>> audio is restricted causing the noise to be distributed over a more >>> narrow >>> range. This lack of bass tends to induce for ear fatigue. >>> Steve Ellington >> >> I agree with Steve on this one. Once more low-end was rolled into my >> audio >> hardware changes, I noticed a significant reduction in my own listener >> fatigue. >> >> Others have noted the K3's audio frequency response variance across >> different headphone models, most notably the Heil product. The K3's >> headphone circuit uses 10 uF of series capacitance from the headphone amp >> to >> each of the headphone coils. >> >> For the moment, assume that your headphones are 32-ohms (ref 100Hz). >> What >> is the best possible low-end response from the K3? The answer is 500 Hz >> @ -3dB. That part of the circuit needs some help. With a headphone Z >> even >> lower toward 8-ohms, the attenuation of bass response is worse. >> >> Now upgrade the series caps to 330 uF and re-run the calculation. With >> 32-ohm phones (ref 100 Hz), the frequency response improves to 15 Hz. >> Now >> that's t real Hi-Fi on par with what Icom delivers and the difference is >> immediately noticeable to anyone -- not just the folks with "golden >> ears." >> >> Finally, compare the result of the modified K3 with the Icom '7700 or >> '7800. >> >> Paul, W9AC >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: MFJ Quality Issues
I've had issues lately with MFJ as well. Last year I ordered a Vectronics keyer kit. It works fine but, the cabinet was punched wrong. The holes didn't even match the kit. I called and was told they would send one. I waited two or three months and called again. This time I was told that they are waiting on aluminum. It's been almost a year now and I haven't received it. I also bought an antenna analyser a couple of years ago. It quit working after a month and I had to send it back for repair. It took about three months before I got it back and it wasn't even the one that I had sent them. Apparently I must have gotten someone else's. Over the last 25 years, I have had to send at least 90% of there stuff back for repair or repair it myself and I have bought quite a bit of equipment from them. I'm thinking how many times do I have to hit my head against the wall before I decide it hurts? I think I have decided now. It's too bad for them since we are in a depression and I don't see how they can really afford this kind of quality at this point. On Fri, 3 Apr 2009 12:33:44 -0500 "Rick Shindley" wrote: > I have purchased a couple of new MFJ tuners over the years and I found both > of them to be of inferior construction. The last one was a more expensive > model and it arrived with solder balls rolling around inside its case, a > cold solder joint and the air variable cap rotor would come in contact with > its stator plates because the rotor was affixed to its all-to pliable front > panel and the stator was affixed to the bottom of the case. A guy could fix > these issues himself by modifying the case and repairing the connections, > but it's wrong to sell things like that and expect glowing reports from > customers. > > The designs MFJ uses are electrically fine, it's just their materials and > construction practices need improvement. It's my understanding that some of > MFJ's products are assembled by prison inmates, God bless 'em. MFJ's > manufacturing business plan must look good on paper but quality control is a > real problem for the company, in my opinion. > > I am all for helping the down-trodden embark on new careers, and maybe > buying MFJ stuff is a clear way to help those people, but from my experience > you have to be prepared to continue to do without once you receive your > order! I really wish they could find a way to improve their quality. > > Rick > KC0OV > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 - setting NB for subRX
Hi all, I've got a question re the operation of the NB when using the subreceiver. I have a K3 with KRX3, running the latest beta F/W (3.06). VFO IND is set to NO. If I understand the manual & errata correctly, when I switch the NB on it should be operational on both main and sub receivers. Changing NB parameters should then apply to NB on both main and sub receivers. The phenomenon I'm seeing here is that when I switch on the NB it is only operational on my main receiver when my sub receiver is active. When I hold BSET and then tap NB I get the expected "=MAIN" message. However, the NB is clearly only active on my main receiver. When setting VFO IND to YES I can switch NB on for main and sub receivers independently and all works FB. However, for the moment I prefer VFO IND to be set to NO but then the NB does not seem to work in my subreceiver. Did I miss something in the manual or can this be reproduced by other users? Thanks for any help. 73 Glenn ON4WIX K2/100 #5361 K3/100 #192 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 audio
This reminds me somethnig. The audio in my K3 sounded much better with noise-canceling phones than with regular headphones. The first one had high amplification and probably high impedance. So the problem may be due to inadequate AF amplifier in K3. I the AF mod helping much? Ignacy As I recall some of the "sharpness" in the audio can be attributed to the impedance of the headphones used. Low impedance transducers (particularly 8 and 16 Ohms) require the headset amplifier to run harder which brings up not only the broadband noise but results in higher levels of distortion. Use of high sensitivity, high impedance transducers with AF Gain = L should result in considerably lower levels of high frequency noise. 73, ... Joe, W4TV > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don Wilhelm > Sent: Sunday, April 05, 2009 7:29 PM > To: ev...@pa2kw.com > Cc: Elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 audio > > > Evert. > > I have no intention to dispute your observations. It is just > that mine > are different. You are justified in being persistent to find out if > there is a problem with some K3s or if it is a localized problem, or > exactly what, but as far as I can tell, it is not apparent on my K3. > > In my observations, I have concluded that the AGC has a lot > to do with > how the K3 sounds. > I particularly liked the way the K2 AGC response sounded, so > I have used > Jack Smith's charts at > http://www.cliftonlaboratories.com/elecraft_k3_agc_and_s-meter.htm to > modify my AGC parameters to have a response more like the K2 (strong > signals sound stronger, weaker signals weaker). Those > settings made a > great difference to me, and made the audio much smoother. > > Secondly, the AGC improvements with MCU 3.03 (and higher) made an > additional difference. > > Is it possible that the AGC settings make a difference in the > perception > of "hissing audio" that we have been discussing? I don't know the > answer, but provide it as "food for thought". > > 73, > Don W3FPR > > > Evert Bakker (PA2KW) wrote: > > Hi Don, > > > > It is definitely not band-noise what I'm talking about. > > You need a decent signal level (audio strength) to hear it. For me, > > I'm quite sure it has to do with the digitalization. That > sound is far > > from natural and is ADDITIONAL to the normal audio signal. That > > addition sounds sharp, metallic, like these "extreme low > cost" jingle > > bell" sounds in all kind of gifts (sorry for the comparison between > > these two). But it is "next" to the normal signal and many > db's down. > > That's why I called it the silver line around the cloud in the > > beginning. The normal signal sounds OK, not as > "comfortable" like my > > TR7 audio but very good for normal use as we do (at least > for me). I > > just would like to get rid of this higher freq component > which doesn't > > like to be influenced by whatever control except the power > and volume > > button :-) . > > > > I've got 2 K3's and they both give me the same result. > > I played with all kind of controls (RX-EQ, AGC-SLP/THR, > AGC-S/F, AGC > > ON/OFF) and there is no difference whatsoever! > > > > I apologize for being persistent in this. > > > > > > 73's, Evert PA2KW > > > > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html -- View this message in context: http://n2.nabble.com/K3-audio-tp2590280p2593625.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 audio
Evert Bakker (PA2KW) wrote: > For me, I'm quite sure it has to do with the digitalization. That sound is > far from natural and is ADDITIONAL to the normal audio signal. That addition > sounds sharp, metallic, like these "extreme low cost" jingle bell" sounds in > all kind of gifts (sorry for the comparison between these two). But it is > "next" to the normal signal and many db's down. K8ZOA replied: There is a 3.9 KHz digitization artifact about 78 dB down from normal audio level. Is this what you hear? I suspect Jack has identified Evert's problem. The 3.9 kHz artifact should sound exactly as Evert describes. Maybe, maybe not. Evert, can you please make a WAV recording while the sharp metallic audio is present? Please email me a copy of the WAV file. 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-audio-tp2590280p2593717.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] OT: J and -31 mix toroids
I know there are several folks here who could answer this questions. I'm looking to improve my current chokes for my 160 and 80 Tx antennas. I was planning on going with -43 material, but after reading thought -J and/or -31 mixes might be a better solution. The 31 mix seems a bit more difficult to find "cheep". J material is a bit more common on the excess sites. Would I notice a difference? Currently, the 160 antenna is a Tee Vertical. 80 is a dipole, but looking at adding a Delta Loop now that I cleared out some brush... Thanks in advance... 73, Julius - Julius Fazekas N2WN Tennessee Contest Group http://www.k4ro.net/tcg/index.html Tennessee QSO Party http://www.tnqp.org/ Elecraft K2/100 #4455 Elecraft K3/100 #366 -- View this message in context: http://n2.nabble.com/OT%3A-J-and--31-mix-toroids-tp2593939p2593939.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Fw: K3 - setting NB for subRX
FWIW: I just loaded F/W 2.78. NB works FB on both main and sub receivers. Must be a firmware bug in 3.06 then... Anyone who can duplicate this? 73 Glenn ON4WIX - Original Message - From: "ON4WIX" To: Sent: Monday, April 06, 2009 5:00 PM Subject: [Elecraft] K3 - setting NB for subRX > Hi all, > > I've got a question re the operation of the NB when using the subreceiver. > I have a K3 with KRX3, running the latest beta F/W (3.06). VFO IND is set > to > NO. > If I understand the manual & errata correctly, when I switch the NB on it > should be operational on both main and sub receivers. Changing NB > parameters > should then apply to NB on both main and sub receivers. > > The phenomenon I'm seeing here is that when I switch on the NB it is only > operational on my main receiver when my sub receiver is active. When I > hold > BSET and then tap NB I get the expected "=MAIN" message. However, the NB > is > clearly only active on my main receiver. > When setting VFO IND to YES I can switch NB on for main and sub receivers > independently and all works FB. However, for the moment I prefer VFO IND > to > be set to NO but then the NB does not seem to work in my subreceiver. > > Did I miss something in the manual or can this be reproduced by other > users? > > Thanks for any help. > > 73 > Glenn ON4WIX > K2/100 #5361 > K3/100 #192 > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html No virus found in this incoming message. Checked by AVG - www.avg.com Version: 8.0.238 / Virus Database: 270.11.43/2043 - Release Date: 04/06/09 06:22:00 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 VFO B Not Working
I have a K3 SN 1553 When I first power up the K3 the VFO B works correctly. After about 1 minute it starts to get eratic and then stops working completly. I have re-loaded the latest (non Beta) Firmware. I checked to to see that the VFO B encoder is properly seated to the connector. Seems like a temperature related problem. FP temp is normal 27 C Has anyone seen a similar problem or have any hints where to start troubleshooting? Thanks, Greg WA1JXR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Fw: K3 - setting NB for subRX
Cannot duplicate here: F/W 3.06, VFO IND no, NB operational in both rx across full range of NB parameters. 73 Pete F5VNB ON4WIX wrote: > FWIW: I just loaded F/W 2.78. NB works FB on both main and sub receivers. > Must be a firmware bug in 3.06 then... > > Anyone who can duplicate this? > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Fw: Re: My K3's hissy and noisy audio
No. It's 3 resistors in a T or pi attenuator circuit. There are many attenuator calculators on the web (just Google) to help select the appropriate resistors for your headphone impedance and desired amount of attenuation. One attenuator is needed for each ear. on 2009-04-05 22:14 Billy Cox said the following: > Eric, is this a simple resistor or ? > > BTW, TU for the NCJ articles on TX/RX. > > 73 de Billy, AA4NU > > -Forwarded Message- > >> From: Eric Scace K3NA >> Sent: Apr 5, 2009 9:21 PM >> To: Maarten van Rossum >> Cc: Elecraft Group >> Subject: Re: [Elecraft] My K3's hissy and noisy audio >> >> I have very sensitive in-ear monitors. The K3 (and the Orion, and >> possibly other radios) has significant hiss. I inserted an attenuator >> and knocked the hiss down below my ability to detect it. There is >> plenty of audio range remaining. >> >> You may find 10 to 20 dB will help. >> > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 VFO B Not Working
Greg, We had a couple of VFO encoders fail; the manufacturer found the problem and corrected it. We can send you a replacement. Please contact k3supp...@elecraft.com for details. tnx Wayne N6KR On Apr 6, 2009, at 9:52 AM, wa1...@comcast.net wrote: > > > I have a K3 SN 1553 > > When I first power up the K3 the VFO B works correctly. > > After about 1 minute it starts to get eratic and then stops working > completly. > > I have re-loaded the latest (non Beta) Firmware. > > I checked to to see that the VFO B encoder is properly seated to the > connector. > > Seems like a temperature related problem. FP temp is normal 27 C > > Has anyone seen a similar problem or have any hints where to start > troubleshooting? > > > > Thanks, Greg WA1JXR > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html --- http://www.elecraft.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] FS: K2 #5723
Before I put it on the auction site, I'd like this to go to someone on the list if they want it. $550.00 shipped to lower 48. Unbuilt 160meter and noise blanker option. Contact me off list if interested. 73 mike ku4yp bpd...@wildblue.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 audio
Maarten, If you send me recordings of your K3 audio (and if possible, recordings of your other rig's audio for comparison), Lyle and I will listen to them and see if we think there's anything wrong (excessive hiss, harshness, etc.). This is certainly not the case with my K3 or any of those I've tested in my lab. If it turns out that nothing is broken, but that you perceive another rig to be better in some way, then we will try to improve the K3 to your satisfaction. Comparative recordings are the first step. 73, Wayne N6KR --- http://www.elecraft.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: MFJ Quality Issues
Folks - This thread was ended last week. 73, Eric WA6HHQ Elecraft List Moderator Gary D Krause wrote: > I've had issues lately with MFJ as well. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] FS: K2 #5723
Wow that's a killer deal. -- Mike WE0H K2 #6698 SKKC #5446 KU4YP wrote: > Before I put it on the auction site, I'd like this to go to someone on the > list if they want it. $550.00 shipped to lower 48. Unbuilt 160meter and > noise blanker option. Contact me off list if interested. 73 mike ku4yp > > > > bpd...@wildblue.net __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Fw: Re: My K3's hissy and noisy audio
This little gadget from Radio Shack will act as an attenuator. I use it on my IC-7000. You can adjust it for no hiss then crank up the AF gain for normal listening. http://www.radioshack.com/product/index.jsp?productId=2102975 I use Bose Tripod headphones on the K3 and there is no audio hiss whatsoever. I think what some of you refer to as hiss is either atmospheric noise or noise generated ahead of the audio stage. If I turn down the RF gain, there is no noise at all. The IC-7000 has a bit of audio hiss. Turning down the RFG or even the AF gain has no effect. This is where the RS device comes in handy. The worst hisser I ever had was an FT-1000MP but that was generated in the IF stage. Yaesu still has hissy radios. Steve Ellington n...@carolina.rr.com - Original Message - From: "Eric Scace K3NA" To: "Billy Cox" ; "Elecraft mailing list" Sent: Monday, April 06, 2009 1:00 PM Subject: Re: [Elecraft] Fw: Re: My K3's hissy and noisy audio > No. It's 3 resistors in a T or pi attenuator circuit. There are many > attenuator calculators on the web (just Google) to help select the > appropriate resistors for your headphone impedance and desired amount of > attenuation. One attenuator is needed for each ear. > > on 2009-04-05 22:14 Billy Cox said the following: >> Eric, is this a simple resistor or ? >> >> BTW, TU for the NCJ articles on TX/RX. >> >> 73 de Billy, AA4NU >> >> -Forwarded Message- >> >>> From: Eric Scace K3NA >>> Sent: Apr 5, 2009 9:21 PM >>> To: Maarten van Rossum >>> Cc: Elecraft Group >>> Subject: Re: [Elecraft] My K3's hissy and noisy audio >>> >>> I have very sensitive in-ear monitors. The K3 (and the Orion, and >>> possibly other radios) has significant hiss. I inserted an attenuator >>> and knocked the hiss down below my ability to detect it. There is >>> plenty of audio range remaining. >>> >>> You may find 10 to 20 dB will help. >>> >> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: sub-rx won't work
I had the same sub rcvr RF sensitivity issue. However, my sub receiver performance was intermittent. When the rig was cool (first turned on) the sub rcvr had identical sensitivity (and audio output level) as the main receiver. However after an hour of operation the sub rcvr sensitivity dropped almost 20db along with a corresponding drop in speaker audio output. After removing and installing the sub rcvr 5 times over a span of 3 months, I was able to isolate the fault to the transformer located right next to the 1st LO TMP input. Close inspection of the transformer leads revealed that the lacquer had not been properly removed from the leads. Using a small tip soldering iron I carefully resoldered all the transformer leads. That fixed my problem. The sub rcvr performance has been flawless now for over 2 months. I never brought this to the attention of Elecraft support because of the intermittent nature of the failure. I'm not saying that you have the identical problem but you may want to pop the cover off your sub rcvr and inspect the coil connections of the transformers and ensure they are properly stripped and soldered to their surface mount headers (which are adjacent to the LO TMP input). Good Luck, Frank - W6NEK - Original Message - From: "W2LE" To: "DM4iM" Cc: "elecraft" Sent: Monday, April 06, 2009 5:43 AM Subject: Re: [Elecraft] K3: sub-rx won't work > That sounds like the problem I had - the leads on T1 on the sub-in > module were not soldered, some paint had been left on the leads. I > cleaned the paint off and resoldered them. > > Paul W2LE > > > DM4iM wrote: >> Guys, i still could not solve the problem with the sub-rx. >> Over the weekend i opened the K3 and checked all TMP-cables, >> they are in their correct places. >> The pins of the sub-out and the sub-in board are correctly mated with >> their sockets. >> The Aux-DSP ist seated correctly etc etc.. >> In short, to me everything looks fine. >> I carefully read the manual in order not to make any mistakes with the >> antenna-connections and/or the selections of the antenna inputs. >> >> The sub-rx *will not work*. >> >> I have : >> >> Noise , but no band noise. >> Faint signals, but this might be a leakage from the main-rx. >> A 2.8khz & 400hz filter in position FL 2 & 3 , so even if i counted the >> positions backwards , one of them should work. >> >> So, what can i do? Can i swap some connections to pin down the defective >> board? >> >> >> > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
Roy Is what you call "hissy" just a lack of bass? I think of "hissy" as high pitched white noise, like wind blowing through a narrow pipe. Is that what you hear? Adding low freq. audio won't reduce hiss at all but I don't think we are dealing with hiss. I think the lack of bass gives us the perception of a tinny, narrow sound, not hiss. Steve Ellington n...@carolina.rr.com - Original Message - From: "Roy Morris" To: Sent: Monday, April 06, 2009 2:01 PM Subject: [Elecraft] K3 Hissy and Noisy Audio >I concur with what has been said regarding the "hissy" audio. The receiver >audio seems to be on the mid-range to high frequency side without enough >low frequencies in the passband. Experiments with RX EQ apparently have >not done anything to eliminate this hiss, but maybe the firmware can be >adjusted to increase the low-end response of the receiver passband. If >this doesn't work, maybe a component change is in order. > > I also think the noise reduction is too sharp in both SSB and CW. Perhaps > NR could also be improved with more low frequencies in the passband. > > Roy Morris W4WFB > K2 #2225 > K3 #323 > K3 #2810 > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Hissy and Noisy Audio
I concur with what has been said regarding the "hissy" audio. The receiver audio seems to be on the mid-range to high frequency side without enough low frequencies in the passband. Experiments with RX EQ apparently have not done anything to eliminate this hiss, but maybe the firmware can be adjusted to increase the low-end response of the receiver passband. If this doesn't work, maybe a component change is in order. I also think the noise reduction is too sharp in both SSB and CW. Perhaps NR could also be improved with more low frequencies in the passband. Roy Morris W4WFB K2 #2225 K3 #323 K3 #2810 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
Have you tried setting the receive equalizer? I set mine for the audio I like to hear I don't have the issue, sometimes I find exactly the opposite depending on all my settings and then decide whether I would like to touch the settings up a bit. (I did just get high marks from a recent hearing test. I told the wife I in fact must have selective hearing :-) 73, Bill K9YEQ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Steve Ellington Sent: Monday, April 06, 2009 1:22 PM To: Roy Morris; elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 Hissy and Noisy Audio Roy Is what you call "hissy" just a lack of bass? I think of "hissy" as high pitched white noise, like wind blowing through a narrow pipe. Is that what you hear? Adding low freq. audio won't reduce hiss at all but I don't think we are dealing with hiss. I think the lack of bass gives us the perception of a tinny, narrow sound, not hiss. Steve Ellington n...@carolina.rr.com - Original Message - From: "Roy Morris" To: Sent: Monday, April 06, 2009 2:01 PM Subject: [Elecraft] K3 Hissy and Noisy Audio >I concur with what has been said regarding the "hissy" audio. The receiver >audio seems to be on the mid-range to high frequency side without enough >low frequencies in the passband. Experiments with RX EQ apparently have >not done anything to eliminate this hiss, but maybe the firmware can be >adjusted to increase the low-end response of the receiver passband. If >this doesn't work, maybe a component change is in order. > > I also think the noise reduction is too sharp in both SSB and CW. Perhaps > NR could also be improved with more low frequencies in the passband. > > Roy Morris W4WFB > K2 #2225 > K3 #323 > K3 #2810 > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
I have tried to adjust the audio of the K3 to my liking. Hi side of spectrum: To get rid of the higher freq's I set the RX-eq 8 to minus 8dB. Lo side of the spectrum: I tried out the RX-eq 1 and 2. Absolutely no difference! Not even with the lo cut set to zero. RX-eq 3 (200Hz) responded better. Set this to plus 8dB This gives a 'rounder' sound to my ears. I sure wish that the 100Hz and 50Hz (RX-eq 1 and 2) would show some response. Low frequencies seem to be absent. K3 #1255, IF-setting: Mode LSB 2.7k 5-pole roofing DSP to norm first, adjusted lo cut to seek for lo freq response Headset: Heil-pro type, 320 ohm measured resistance. 73, Arie PA3A __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Firmware upgrade harder than construction...Help
Jay wrote: > After 10 months I decided to upgrade my firmware from the original 2.16 > since I just got the KXV3 and KRX3...Frustration! > Have a USB 2.0 to RS232 Serial adapter and have tried it in all my USB > plugs and in Com ports 1, 2, and 4 which are shown as choices on the K3 > Utility.The computer tells me my driver is correct, I've matched > 9600 baud with the K3 and all I ever get is a "K3 not responding" on Com > Ports 1 and 2, and "Another app connected to" Com port 4. I'd just > order the CD, but that would not solve my communication from the > computer to the K3. What should I try next? It's unlikely to be COM1 or 2 - those are usually [reserved for] built-in serial ports. Right-click "My Computer", choose "Manage", then in the window that opens, click on "Device Manager", then expand the "Ports" sub-tree. You should see currently available serial ports there. See if one of them comes and goes when you plug / unplug the USB adapter. If so, you know which one you would be choosing in K3 Utility. If not, you probably have a driver (or hardware) problem. ~Iain / N6ML __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: Mods/Additions..Suggestions for order of install please.
I'm ready and have all mods (diodes, AF output, Audio Line) and the I/O board upgrade, KXV3 and KRX3 ready to go. Want to attack this without having to keep removing things over and over. Should the (diodes, AF output, Audio Line) mods go first, then the I/O board upgrade, KXV3 next and then save the KRX3 for last since it looks like the most complex? Or.? I'm sure a few of you have been through this. Thanks. Jay, W6JDB K3# 1288. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 audio
Bill, Thanks for support. Unfortunately I do have to disappoint you about the suggestions. I tried, but absolutely no effect when changing the RX-EQ setting. Even when 2.4 and 1.6 were set at -16, it did not have any effect. Except when the original audio signal became weaker due to the lowered cut-off of the high side of the pass-band, the "hiss" became less as well. This is already what I stated before, the level of hiss only seems to be influenced by the audio level. May be I introduced a misunderstanding when using the word hiss. As it seems almost impossible for me to explain what I hear, it gave me the idea that the word "hiss" may be not the right word for the phenomena I wont to share we you. But I'm not able to make it clearer then I tried so far. I can also say that it is not a pure additional sidetone but it's a combination of several components. 73's, Evert PA2KW -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Bill W4ZV Sent: Monday, April 06, 2009 14:11 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 audio Evert Bakker (PA2KW) wrote: > For me, I'm quite sure it has to do with the digitalization. That sound is > far from natural and is ADDITIONAL to the normal audio signal. That addition > sounds sharp, metallic, like these "extreme low cost" jingle bell" sounds in > all kind of gifts (sorry for the comparison between these two). But it is > "next" to the normal signal and many db's down. K8ZOA replied: There is a 3.9 KHz digitization artifact about 78 dB down from normal audio level. Is this what you hear? I suspect Jack has identified Evert's problem. The 3.9 kHz artifact should sound exactly as Evert describes. To check, Evert could try setting RX EQ 8 (3.2 kHz) to -16. If this reduces the sound he's hearing, it should prove that the 3.9 kHz artifact is causing his problem. You should not have any reduction in intelligibility for SSB contests by setting RX EQ 8 as above. For CW, I normally set RX EQ 1-2 and 5-8 at -16 dB, since I normally use a 300-440 Hz pitch. 73, Bill W4ZV -- View this message in context: http://n2.nabble.com/K3-audio-tp2590280p2592702.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 audio
Hello Barry, I will try. I saw some recording programs lately on the reflector. I'll try to find them and install it. W'll keep in touch. 73's, evert PA2KW -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Barry N1EU Sent: Monday, April 06, 2009 17:33 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3 audio Evert Bakker (PA2KW) wrote: > For me, I'm quite sure it has to do with the digitalization. That sound is > far from natural and is ADDITIONAL to the normal audio signal. That addition > sounds sharp, metallic, like these "extreme low cost" jingle bell" sounds in > all kind of gifts (sorry for the comparison between these two). But it is > "next" to the normal signal and many db's down. K8ZOA replied: There is a 3.9 KHz digitization artifact about 78 dB down from normal audio level. Is this what you hear? I suspect Jack has identified Evert's problem. The 3.9 kHz artifact should sound exactly as Evert describes. Maybe, maybe not. Evert, can you please make a WAV recording while the sharp metallic audio is present? Please email me a copy of the WAV file. 73, Barry N1EU -- View this message in context: http://n2.nabble.com/K3-audio-tp2590280p2593717.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Error message
Whenever I turn on my K3 I see "ERR PL2" go across the screen then everything else seems to come up fine. What is this error message? Jim, W4TE K3 #353 ++ James R. Kauten, MD kau...@atnex.net ++ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: J and -31 mix toroids
You might wish to experiment with Steward mix 35 or 40 toroids. Mix 35 has a relative permeability of 5000 and mix 40 is 10,000. Fair-Rite's 31 material has a relative permeability of 1500. Digikey carries several sizes of toroid cores in mix 35 and 40 at moderate price. Search DigiKey's web site for 35T or 40T to see what they have available. For example, a 1 inch OD core is $1.19 in single lot quantities. Smaller cores, 0.54 inch OD, are 23 cents each in single lot. Steward's 35 and 40 material are MnZn ferrites and will have dimensional resonance in the HF frequency range, with the exact frequency depending on the core dimension. I suspect that dimensional resonance won't be an issue for a current choke at your frequency range, however. Fair-Rite claims the 31 material, although also a MnZn ferrite, does not have dimensional resonance. Type 43 is a NiZn ferrite and does not have dimensional resonance in the HF frequency band. Jack K8ZOA Julius Fazekas n2wn wrote: > I know there are several folks here who could answer this questions. > > I'm looking to improve my current chokes for my 160 and 80 Tx antennas. I was > planning on going with -43 material, but after reading thought -J and/or -31 > mixes might be a better solution. > > The 31 mix seems a bit more difficult to find "cheep". J material is a bit > more common on the excess sites. Would I notice a difference? > > Currently, the 160 antenna is a Tee Vertical. 80 is a dipole, but looking at > adding a Delta Loop now that I cleared out some brush... > > Thanks in advance... > > 73, > Julius > > > - > Julius Fazekas > N2WN > > Tennessee Contest Group > http://www.k4ro.net/tcg/index.html > > Tennessee QSO Party > http://www.tnqp.org/ > > Elecraft K2/100 #4455 > Elecraft K3/100 #366 > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] [K3] Ref Osc Cal Method 4
I've been spending a lot of time looking at the Line Output of my K3 using the wonderful (and more remarkably, free) Spectrum Lab program. http://freenet-homepage.de/dl4yhf/spectra1.html In so doing, I developed an alternate way to set the K3 (or other radio) Ref Osc. frequency if you have a computer and sound card (who doesn't these days). WWV and WWVH broadcast standard audio tones as part of NIST's family of standard frequencies. A table of these can be seen here: http://tf.nist.gov/stations/iform.html#stdf Method 2 of the Reference Cal procedure in the K3 manual uses the carrier of stations like WWV(H) as a reference, but works best with steady signals so that the amplitudes of the received audio and the monitor tone are similar. This is probably still the better method, but with today's propagation, at some locations this may be problematic. The following is an alternative that may be useful. If one sets their K3 to AM mode and one of the WWV(H) broadcast frequencies, e.g. 10.00 MHz and looks at the K3 output with Spectrum Lab set to scan a range of say, 200 to 800 Hz, then during one of the time periods that a standard tone is broadcast, you will see a signal peak at that frequency on your computer screen. (This is a good check on the clock in your sound card.) With even a poor signal, Spectrum Lab will dig out the tone, making this work under dismal conditions. Now when you select either LSB or USB (normalize the DSP bandwidths in both modes) if the Reference Oscillator calibration is set correctly, you should see the peak at nearly* the same frequency on the Spectrum Lab display. If the calibration is wrong, then the response on one sideband will be offset from the AM case and the other sideband will offset in the opposite direction. By using MENU:CONF:REF CAL and dialing in the frequency while cycling through LSB, USB and AM the three peaks can be made to (nearly*) coincide. * While I'm not privy to all of the frequency manipulation that takes place as the DSP bandwidth is changed, I know that it's complicated and inexact, so "nearly" seems to be the best that I've seem. The "Shift" control setting does affect the beat note. This is generally inaudible, but on some frequencies, I've heard it by ear. This is true in CW too, so Method 2 carries the same caveat. Offered with no warranty. YMMV. Wes Stewart N7WS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] OT:LED Lighting
There was some earlier discussion about LED lighting and I thought this article might be "illuminating". http://electronicdesign.com/Articles/ArticleID/20825/20825.html Wes Stewart N7S __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: J and -31 mix toroids
I should also mention that Mouser carries some Fair-Rite mix 31 cores. They are in the catalog at Fair-Rite -- http://www.mouser.com/catalog/637/917.pdf is the current catalog page. Jack K8ZOA Julius Fazekas n2wn wrote: > I know there are several folks here who could answer this questions. > > I'm looking to improve my current chokes for my 160 and 80 Tx antennas. I was > planning on going with -43 material, but after reading thought -J and/or -31 > mixes might be a better solution. > > The 31 mix seems a bit more difficult to find "cheep". J material is a bit > more common on the excess sites. Would I notice a difference? > > Currently, the 160 antenna is a Tee Vertical. 80 is a dipole, but looking at > adding a Delta Loop now that I cleared out some brush... > > Thanks in advance... > > 73, > Julius > > > - > Julius Fazekas > N2WN > > Tennessee Contest Group > http://www.k4ro.net/tcg/index.html > > Tennessee QSO Party > http://www.tnqp.org/ > > Elecraft K2/100 #4455 > Elecraft K3/100 #366 > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Hissy and Noisy Audio
Audio is notorious for having a very subjective vocabulary, and this may make it hard to understand what is meant. I hear terms like hissy, rounder, lack of bass etc in this discussion. In an attempt to make this discussion more to the point I would suggest this list compiled by Bruce Bartlett from Pro Audio 1997. I find it helpful in making discussions focused: http://www.linkwitzlab.com/images/graphics/sd-qulty.gif According to the list, I would suggest that those who have a problem with the K3 audio look up these terms: 'bright', 'edgy', 'grainy', 'grungy', 'hard', 'harsh', 'muddy', 'piercing', 'thin' to find what best describes what they hear. That may give a common ground for describing the effects. Sverre F/LA3ZA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
After reading all the postings about audio, I tried a couple of different ear sets. I set all but my equalizer to normal settings for SSB. My equalizer I didn't touch until I tried to see the impact when I tried different earbuds. I do not have Heil pro's as I don't like the cover the ear devices because they cause me to sweat and I cannot hear the wife when she's needing something. I find the adjustments for all the settings on the equalizers work for me with the earbuds. I can distinguish changes. I also tried the offset and that can help with either base or treble boost as well. The first headset was an inexpensive Sony stereo earbuds(108 dbm sensitivity which is very good). Then I tried my studio quality Shure e5c's which have much greater sensitivity, I forget the amount, but it is enough to hear the audio hiss or noise floor of the K3. The K3 is not studio quality audio and I doubt any of them are and I did not try this on any other radio). I generally don't use headsets so with the speakers, audio quality seems superior to other rigs I own (TS2000 and IC7000). I have always liked my 3 K2's! Perhaps there is a relationship between some of the radios and audio devices which are connected to the K3 that create the issues. I use a Vertex MLS-100 mobile external speaker, and I have it literally in front of me so I can hear it with light audio settings. There is zero hiss from the radio and the audio is excellent. I don't know if this is of any help, but the time taken keeps me from avoiding other work. Hope you and others are able to find a suitable solution. 73, Bill K9YEQ K2 #35; KX1 #35; K3 #1744; mini mods ATS-3B -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Arie Kleingeld PA3A I have tried to adjust the audio of the K3 to my liking. Hi side of spectrum: To get rid of the higher freq's I set the RX-eq 8 to minus 8dB. Lo side of the spectrum: I tried out the RX-eq 1 and 2. Absolutely no difference! Not even with the lo cut set to zero. RX-eq 3 (200Hz) responded better. Set this to plus 8dB I sure wish that the 100Hz and 50Hz (RX-eq 1 and 2) would show some response. Low frequencies seem to be absent. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3: sub-rx won't work (solved)
You are not going to believe what caused all that trouble. The Crystal Filters! They were in their correct position, but i had installed them reverse... This also seemed to solve the problem with the disappearing power and attenuation of the main rx. Thank you all for the help , especially Gary of Elecraft-support. Note: Don't build when you are tired. :-) Martin -- 73, DM4iM __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] Artificial RF Ground - Redux
To all who took the time to answer my questions about the MFJ Artificial RF Ground - Thank you! I sincerely appreciate the well thought out replies and references. After digesting as much as I could I decided to go simple and work up. I began with 11 turns of RG-8X around a 4 inch PVC pipe, directly feeding the antenna. Preliminary tests show a much improved situation with the real test coming after the sun goes down and 40 m comes up. Thanks to all and apologies to MFJ. I certainly didn't intend to ignite a fire storm of debate. 72/73 es gd props. Tom, ng3v __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
Sverre, What's great about this vocabulary (and Ed, W0YK, who is a master vintner may want to comment) is that you can use this same wonderfully imprecise audio vocabulary to describe another object of notoriously subjective taste -- wine. For example, I've been tempted to hit Ed with the following for one of his Muns Vineyard Pinot Noir vintages: "Solid bass, a bit lacking in the mid-range, but with a good top end." 73, andy, ae6y - Original Message - From: "Sverre Holm" To: Sent: Monday, April 06, 2009 2:29 PM Subject: [Elecraft] K3 Hissy and Noisy Audio Audio is notorious for having a very subjective vocabulary, and this may make it hard to understand what is meant. I hear terms like hissy, rounder, lack of bass etc in this discussion. In an attempt to make this discussion more to the point I would suggest this list compiled by Bruce Bartlett from Pro Audio 1997. I find it helpful in making discussions focused: http://www.linkwitzlab.com/images/graphics/sd-qulty.gif According to the list, I would suggest that those who have a problem with the K3 audio look up these terms: 'bright', 'edgy', 'grainy', 'grungy', 'hard', 'harsh', 'muddy', 'piercing', 'thin' to find what best describes what they hear. That may give a common ground for describing the effects. Sverre F/LA3ZA > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 audio
Hi Evert, You are not alone - my K3 and another I tried experience the same symptoms. I can't work out the cause but inserting a low pass filter in the headphone output fixes the problem. I found the same as you in that increasing the AF gain makes things worse but I don't know if this is amplifier distortion or a digital artifact that is only audible when you turn the AF gain up. I know the measured performance looks acceptable but this doesn't help. I periodically return to this issue to try and get to the bottom of it but so far no luck. 73 Paul M1PAF It is definitely not band-noise what I'm talking about. I've got 2 K3's and they both give me the same result. I played with all kind of controls (RX-EQ, AGC-SLP/THR, AGC-S/F, AGC ON/OFF) and there is no difference whatsoever! -- View this message in context: http://n2.nabble.com/K3-audio-tp2590280p2595873.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Mods/Additions..Suggestions for order of install please.
I'm ready and have all mods (diodes, AF output, Audio Line) and the I/O board upgrade, KXV3 and KRX3 ready to go. This might help but it doesn't include installing a KXV3 and KRX3: http://mailman.qth.net/pipermail/elecraft/2009-February/105704.html 73, Bill -- View this message in context: http://n2.nabble.com/K3%3A-Mods-Additions..Suggestions-for-order-of-install-please.-tp2595278p2595912.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Mods/Additions..Suggestions for order of install please.
I'm ready and have all mods (diodes, AF output, Audio Line) and the I/O board upgrade, KXV3 and KRX3 ready to go. This might help but it doesn't include installing a KXV3 and KRX3: http://mailman.qth.net/pipermail/elecraft/2009-February/105704.html 73, Bill Also beware of the following when you do the 12V sense mod: http://www.mail-archive.com/elecraft@mailman.qth.net/msg73672.html 73, Bill -- View this message in context: http://n2.nabble.com/K3%3A-Mods-Additions..Suggestions-for-order-of-install-please.-tp2595278p2595927.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
> Perhaps NR could also be improved with more low > frequencies in the passband. Please NO! I already run RX Audio bands 1 and 2 at -16 dB to eliminate excessive bass - no more bass, please! The hiss many seem to be complaining about is broadband noise in the audio (speaker) and/or headphone amplifier. It is more noticeable when driving low impedance loads (8/16 Ohm) due to the relatively high gain (14 dB) of the speaker amplifier and the high frequency boosting effect of the 33 pF capacitors in parallel with the gain setting (feedback resistors). 73, ... Joe, W4TV > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Roy Morris > Sent: Monday, April 06, 2009 2:01 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] K3 Hissy and Noisy Audio > > > I concur with what has been said regarding the "hissy" audio. > The receiver audio seems to be on the mid-range to high > frequency side without enough low frequencies in the > passband. Experiments with RX EQ apparently have not done > anything to eliminate this hiss, but maybe the firmware can > be adjusted to increase the low-end response of the receiver > passband. If this doesn't work, maybe a component change is in order. > > I also think the noise reduction is too sharp in both SSB and > CW. Perhaps NR could also be improved with more low > frequencies in the passband. > > Roy Morris W4WFB > K2 #2225 > K3 #323 > K3 #2810 > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 with PW-1 and Microham MKII
How do I get the PW-1 to follow the K3? I have the MKII cabled to the CI-V port on the PW-1 and to the same connection as my SteppIR on the MKII. The SteppIR follows perfectly. The "PW-1 on Radio bus" box is greyed out. The PW-1 is not following at all. John __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 audio
Thanks, Wayne. I wanted to ask about the hissy and brittle audio on my own K3 a while back, but at the time, certain forces on the reflector seemed intent on putting down such audacious critique (NOT, I emphasise, anyone from Elecraft "central"). Instead, I chose to take the coward's option and just wait and tinker. I have attached some pieces of Dampamat, a material favoured by the car boom-box aficionados, to the underside of the K3's top cover. This improved the internal speaker's sound a little. Next, my outboard recycled small car pod speakers' cabinets were lined with Dampamat and their bass response was vastly improved. By way of a tip for others, I bought the Dampamat originally because the two linear PSUs used to power my K2 and K3 tended to hum appreciably on full load. Steel cabinets in a strong 50Hz magnetic field around big transformers make excellent transducers. Judicious application of Dampamat to internal surfaces and on two out of four sides of the transformer laminations has worked wonders. If only they'd had ali cabinets instead HI! I intend to create an infinite baffle (fancy name for a box without holes) around the K3's internal speaker and cover it with Dampamat. It's just a matter of finding a suitable potting box cover, or making one from materials to hand. That should improve the internal speaker's bass response but will also reduce its efficiency a little. I have many sets of headphones, so will address headphone audio in time, but I suspect a change of coupling capacitors will be on the cards. 73 DaveL G3TJP >wayne burdick >Mon, 06 Apr 2009 10:25:29 -0700 >Maarten, > >If you send me recordings of your K3 audio (and if possible, recordings >of your other rig's audio for comparison), Lyle and I will listen to >them and see if we think there's anything wrong (excessive hiss, >harshness, etc.). This is certainly not the case with my K3 or any of >those I've tested in my lab. > >If it turns out that nothing is broken, but that you perceive another >rig to be better in some way, then we will try to improve the K3 to >your satisfaction. Comparative recordings are the first step. > >73, >Wayne >N6KR --- http://www.elecraft.com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: J and -31 mix toroids
Subject: Re: [Elecraft] OT: J and -31 mix toroids > You might wish to experiment with Steward mix 35 or 40 toroids. Mix 35 > has a relative permeability of 5000 and mix 40 is 10,000. Fair-Rite's 31 > material has a relative permeability of 1500. > > Digikey carries several sizes of toroid cores in mix 35 and 40 at > moderate price. Search DigiKey's web site for 35T or 40T to see what > they have available. For example, a 1 inch OD core is $1.19 in single > lot quantities. Smaller cores, 0.54 inch OD, are 23 cents each in single > lot. > > Steward's 35 and 40 material are MnZn ferrites and will have dimensional > resonance in the HF frequency range, with the exact frequency depending > on the core dimension. I suspect that dimensional resonance won't be an > issue for a current choke at your frequency range, however. Fair-Rite > claims the 31 material, although also a MnZn ferrite, does not have > dimensional resonance. Type 43 is a NiZn ferrite and does not have > dimensional resonance in the HF frequency band. > > > Jack K8ZOA > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 with PW-1 and Microham MKII
> The PW-1 is not following at all. Have you followed the configuration steps in the PW-1 manual to "lock" it to the CI-V address used in the microKEYER II? > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of John Gaynard > Sent: Monday, April 06, 2009 6:58 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] K3 with PW-1 and Microham MKII > > > How do I get the PW-1 to follow the K3? I have the MKII > cabled to the CI-V port on the PW-1 and to the same > connection as my SteppIR on the MKII. The SteppIR follows > perfectly. The "PW-1 on Radio bus" box is greyed out. The > PW-1 is not following at all. > > > > John > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] PSK 31
Gentlemen: I've been playing around with PSK-31 and can sort of get it working, using the K-3 and the Elecraft software. I am able to send by typing text into the software, and someone on the same frequency can hear and copy me. I was having difficulty copying him, even thought I was hear his warble. I also have a copy of HRD, which is quite complicated to use, so I've put that off, even though I hear great things about it. My question is, does anyone have an application note; PSK-31 on a K-3 for dummies, that would give me a simple way to play with it? I've used PSK-31 before on a previous 746 Pro and a Tigertronics USB box, and it worked fine. I was able to see the waterfall on my computer screen and could select a signal by clicking on the signal on the display. Not sure if I can still do this using elecraft software? I have my K-3 connected to my laptop computer with a USB-serial adapter, which works fine. Do I need to use the sound card in my laptop too? Thanks, Ron AE6RH S/N 1997 Ron Midwin __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] PSK 31
> I've used PSK-31 before on a previous 746 Pro and a Tigertronics USB box, > and it worked fine. I was able to see the waterfall on my computer screen > and could select a signal by clicking on the signal on the display. Not > sure if I can still do this using elecraft software? Use the same PC software you used then. Use the computer soundcard and the LINE In and LINE OUT connections between the K3 and your PC instead of the Tigertronics box. If you still have the Tigertronics box, you can certainly use it, of course. 73, Lyle KK7P __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Firmware upgrade harder than construction...Help
Jay, there's a K3 Utility Help page dedicated to troubleshooting USB to Serial adapter issues. My guess is that you're not finding the right COM port number for the USB to Serial Adapter. There's a separate troubleshooting Help page, "Finding the right COM port" on that topic. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Iain MacDonnell - N6ML Sent: Monday, April 06, 2009 1:11 PM To: Jay Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] K3: Firmware upgrade harder than construction...Help Jay wrote: > After 10 months I decided to upgrade my firmware from the original 2.16 > since I just got the KXV3 and KRX3...Frustration! > Have a USB 2.0 to RS232 Serial adapter and have tried it in all my USB > plugs and in Com ports 1, 2, and 4 which are shown as choices on the K3 > Utility.The computer tells me my driver is correct, I've matched > 9600 baud with the K3 and all I ever get is a "K3 not responding" on Com > Ports 1 and 2, and "Another app connected to" Com port 4. I'd just > order the CD, but that would not solve my communication from the > computer to the K3. What should I try next? It's unlikely to be COM1 or 2 - those are usually [reserved for] built-in serial ports. Right-click "My Computer", choose "Manage", then in the window that opens, click on "Device Manager", then expand the "Ports" sub-tree. You should see currently available serial ports there. See if one of them comes and goes when you plug / unplug the USB adapter. If so, you know which one you would be choosing in K3 Utility. If not, you probably have a driver (or hardware) problem. ~Iain / N6ML __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
Hi Joe, Looking at Spectra right out of the Phones output, I don't see where bands 1or 2 do all that much in lowering K3's bass. Having the rig on SSB using the 2.7 Khz filter, the "Lo" on 0, I see no change on bands 1 and 2 when I set them to -16. What I am missing here? I have never seen or heard too much bass in the K3. I did a plot at 0 dB, one at -16 on band 1 and another one on -16 on band 2 if anyone would like to see them. 73 de w5jay/jay.. > >> Perhaps NR could also be improved with more low >> frequencies in the passband. > > Please NO! I already run RX Audio bands 1 and 2 at -16 dB to > eliminate excessive bass - no more bass, please! > > The hiss many seem to be complaining about is broadband noise > in the audio (speaker) and/or headphone amplifier. It is more > noticeable when driving low impedance loads (8/16 Ohm) due to > the relatively high gain (14 dB) of the speaker amplifier > and the high frequency boosting effect of the 33 pF capacitors > in parallel with the gain setting (feedback resistors). > > 73, > > ... Joe, W4TV > > > > >> -Original Message- >> From: elecraft-boun...@mailman.qth.net >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Roy Morris >> Sent: Monday, April 06, 2009 2:01 PM >> To: elecraft@mailman.qth.net >> Subject: [Elecraft] K3 Hissy and Noisy Audio >> >> >> I concur with what has been said regarding the "hissy" audio. >> The receiver audio seems to be on the mid-range to high >> frequency side without enough low frequencies in the >> passband. Experiments with RX EQ apparently have not done >> anything to eliminate this hiss, but maybe the firmware can >> be adjusted to increase the low-end response of the receiver >> passband. If this doesn't work, maybe a component change is in order. >> >> I also think the noise reduction is too sharp in both SSB and >> CW. Perhaps NR could also be improved with more low >> frequencies in the passband. >> >> Roy Morris W4WFB >> K2 #2225 >> K3 #323 >> K3 #2810 >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3: Firmware upgrade harder than construction...Help
Dick, This may not be the case. I struggled for 2 months to get my USB to serial cable to work correctly. I bought the Elecraft cable, downloaded the Prolific driver and I could not get,in my case, LP Pan to function properly. I fixed it yesterday, after some local help (Tnx N3EAQ) and an email to N8LP, by going to a straight serial cable. LP Pan and PowerSDR are now working simultaneously with 4 other programs. The telling event was when we looked at the COM ports every time I unplugged and reconnected the USB cable the other ports though they were busy. N8LP believes it is a conflict with the chip set in some computers. I also installed 2 GB of ram and an upscale sound card thinking my 2.54 GHz CPU was having issues. I have a Foxconn 661MX motherboard. 73, Sid K3SX Dick Dievendorff wrote: > Jay, there's a K3 Utility Help page dedicated to troubleshooting USB to > Serial adapter issues. > > My guess is that you're not finding the right COM port number for the USB to > Serial Adapter. > > There's a separate troubleshooting Help page, "Finding the right COM port" > on that topic. > > 73 de Dick, K6KR > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Iain MacDonnell - > N6ML > Sent: Monday, April 06, 2009 1:11 PM > To: Jay > Cc: elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3: Firmware upgrade harder than construction...Help > > > > Jay wrote: >> After 10 months I decided to upgrade my firmware from the original 2.16 >> since I just got the KXV3 and KRX3...Frustration! >> Have a USB 2.0 to RS232 Serial adapter and have tried it in all my USB >> plugs and in Com ports 1, 2, and 4 which are shown as choices on the K3 >> Utility.The computer tells me my driver is correct, I've matched >> 9600 baud with the K3 and all I ever get is a "K3 not responding" on Com >> Ports 1 and 2, and "Another app connected to" Com port 4. I'd just >> order the CD, but that would not solve my communication from the >> computer to the K3. What should I try next? > > It's unlikely to be COM1 or 2 - those are usually [reserved for] > built-in serial ports. > > Right-click "My Computer", choose "Manage", then in the window that > opens, click on "Device Manager", then expand the "Ports" sub-tree. > You should see currently available serial ports there. See if one of > them comes and goes when you plug / unplug the USB adapter. If so, you > know which one you would be choosing in K3 Utility. If not, you probably > have a driver (or hardware) problem. > > ~Iain / N6ML > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Audio
As Joe sez, PLEASE, no more bass without the means to avoid it. I'm interested in a communications transceiver, not a "hi-fi" receiver for my home audio system. (:-)) 73! Ken Kopp - K0PP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Audio
Ken, I am with you. I like the K-3 receive audio on phone and am not a fan of the down to "0" audio. For many years I have referred to this as, "Low order distortion". Also, I don't like that dull thud sound some of the guys exhibit with the excessive wide audio and external equipment. Too much base can be bad. I remember many years ago the horrible basey audio from a Kenwood MC-50 and the toilet roll fix. Back to hissy receive audio it's pretty noticeable in the Yaesu FT-1000 MP. The fix is to turn the DSP off and set the carrier point in the menu. Still, I don't hear any appreciable hiss in the K3. 73 de KE4WY Jim -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken Kopp Sent: Monday, April 06, 2009 8:10 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Audio As Joe sez, PLEASE, no more bass without the means to avoid it. I'm interested in a communications transceiver, not a "hi-fi" receiver for my home audio system. (:-)) 73! Ken Kopp - K0PP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Headset Redux
Per the discussion a couple of weeks ago regarding lightweight headsets for the K3, I decided to look for the cheapest one I could find that would still give good results. Amazingly, I found a really lightweight computer headset for $10 at Tiger Direct that has foam covered earphones, a foam covered electret mic at the end of a nice long boom, a six foot cord, and the construction seems reasonably robust. I have my K3 parameters (mic gain. compression, equalization) set to give good clean crisp transmit audio for contesting and DXing using the stock Elecraft MH-2 mic, and I've always gotten excellent on-the-air reports with it. Using those exact same settings, the $10 headset reportedly sounds almost identical to the MH-2 in on-the-air tests with the possible exception of very slightly less low frequency response, and I'm certain that could be handled with the equalization. *http://tinyurl.com/cs4fnn * In case anyone is interested ... 73, Dave AB7E * * __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
You are right Jay. Bands 1 and 2 do nothing. There's nothing to reduce! Steve Ellington n...@carolina.rr.com - Original Message - From: "Jay Bromley" To: ; "'Roy Morris'" ; Sent: Monday, April 06, 2009 7:47 PM Subject: Re: [Elecraft] K3 Hissy and Noisy Audio > Hi Joe, > Looking at Spectra right out of the Phones output, I don't see where bands > 1or 2 do all that much in lowering K3's bass. > > Having the rig on SSB using the 2.7 Khz filter, the "Lo" on 0, I see no > change on bands 1 and 2 when I set them to -16. What I am missing here? > I > have never seen or heard too much bass in the K3. > > I did a plot at 0 dB, one at -16 on band 1 and another one on -16 on band > 2 > if anyone would like to see them. > > 73 de w5jay/jay.. > > > >> >>> Perhaps NR could also be improved with more low >>> frequencies in the passband. >> >> Please NO! I already run RX Audio bands 1 and 2 at -16 dB to >> eliminate excessive bass - no more bass, please! >> >> The hiss many seem to be complaining about is broadband noise >> in the audio (speaker) and/or headphone amplifier. It is more >> noticeable when driving low impedance loads (8/16 Ohm) due to >> the relatively high gain (14 dB) of the speaker amplifier >> and the high frequency boosting effect of the 33 pF capacitors >> in parallel with the gain setting (feedback resistors). >> >> 73, >> >> ... Joe, W4TV >> >> >> >> >>> -Original Message- >>> From: elecraft-boun...@mailman.qth.net >>> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Roy Morris >>> Sent: Monday, April 06, 2009 2:01 PM >>> To: elecraft@mailman.qth.net >>> Subject: [Elecraft] K3 Hissy and Noisy Audio >>> >>> >>> I concur with what has been said regarding the "hissy" audio. >>> The receiver audio seems to be on the mid-range to high >>> frequency side without enough low frequencies in the >>> passband. Experiments with RX EQ apparently have not done >>> anything to eliminate this hiss, but maybe the firmware can >>> be adjusted to increase the low-end response of the receiver >>> passband. If this doesn't work, maybe a component change is in order. >>> >>> I also think the noise reduction is too sharp in both SSB and >>> CW. Perhaps NR could also be improved with more low >>> frequencies in the passband. >>> >>> Roy Morris W4WFB >>> K2 #2225 >>> K3 #323 >>> K3 #2810 >>> __ >>> Elecraft mailing list >>> Home: http://mailman.qth.net/mailman/listinfo/elecraft >>> Help: http://mailman.qth.net/mmfaq.htm >>> Post: mailto:Elecraft@mailman.qth.net >>> >>> This list hosted by: http://www.qsl.net >>> Please help support this email list: http://www.qsl.net/donate.html >> >> __ >> Elecraft mailing list >> Home: http://mailman.qth.net/mailman/listinfo/elecraft >> Help: http://mailman.qth.net/mmfaq.htm >> Post: mailto:Elecraft@mailman.qth.net >> >> This list hosted by: http://www.qsl.net >> Please help support this email list: http://www.qsl.net/donate.html > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] PSK 31
Ron AE6RH wrote: > I've been playing around with PSK-31 and can sort of get it working, using > the K-3 and the Elecraft software. I am able to send by typing text into > the software, and someone on the same frequency can hear and copy me. I was > having difficulty copying him, even thought I was hear his warble. > If you're using the PSK mode on the K3, try pressing XFIL and keeping the signal in audible by tuning. When you get to your narrowest filter, start going down to about 200Hz, and then press the Spot button; this should auto tune. Narrow again down to 100Hz and then start tuning up and down in single Hz increments until the copy is the best. It will be in the +/- 5Hz range from where the Spot auto puts you. > I also have a copy of HRD, which is quite complicated to use, so I've put > that off, even though I hear great things about it. > HRD/DM780 has a somewhat full-featured UI; there are other programs with more complex ones, and some with simpler. Try fldigi (I work on it) and see if it strikes your fancy. If not, try DigiPan and then move up from there. > My question is, does anyone have an application note; PSK-31 on a K-3 for > dummies, that would give me a simple way to play with it? > Use two shielded cables to hook the K3 LINE in/out on the back of the K3 to your sound card. Hook your RS232 cable up to your computer and your K3 if you have one. Make sure you disable Windows sounds. Install DM780, fldigi, or DigiPan. Hold TEST to make sure you don't accidentally transmit. You should be able to receive fine at this point and observe the protocol. Once you're happy with what you know, it's time to transmit. Your biggest question is how to key the rig. If all else fails, you can just tap the K3's XMIT button when you want to transmit and tap it again when done. This will get you on the air pretty quick, with nothing but the the two audio cables. fldigi at least can be configured to use the RS232 commands to transmit. It can use the RS232 commands to read the VFO as well. With the others you may have to futz with some settings about which additional line (DTR, RTS, etc.) to use to cause the K3 to transmit. With PSK there's no real advantage to using one of these extra lines on the serial cable to transmit, and there are some disadvantages. But the good news is that you definitely don't need a special interface or cable. Once you decide which program you like best, join the users group for it (bulletin board, mailing list, what have you) and you'll find more specific help there. Leigh/WA5ZNU > > > I've used PSK-31 before on a previous 746 Pro and a Tigertronics USB box, > and it worked fine. I was able to see the waterfall on my computer screen > and could select a signal by clicking on the signal on the display. Not > sure if I can still do this using elecraft software? > > > > I have my K-3 connected to my laptop computer with a USB-serial adapter, > which works fine. Do I need to use the sound card in my laptop too? > > > > Thanks, > > > > Ron > > AE6RH > > S/N 1997 > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Hissy and Noisy Audio
There seems to be no consensus as to what the "hiss" or "noise" is. Therefore, there is no consensus on how to fix it. This noise, whatever it is, is something I can live with because I think the K3 is the best overall transceiver I have owned to date. Forget this noise thing. My main concern is the noise reduction. I DO wish it could be improved. It is too sharp in the SSB mode. I can live with the sharp CW mode. It is harsh at some audio frequencies regardless of NR settings. I find the F1-1 setting to be tolerable, and it goes downhill from there. Wayne, you stated you wanted to make a comparison with another transceiver. Listen to the noise reduction on an Omni VII in SSB mode. It does not generate sharp artifacts on a SSB signal regardless of whether a speaker or headphones are used. With the NR turned on and the appropriate amount of attenuation inserted during heavy QRN conditions, the Omni VII almost sounds like it is squelched. The signal just pops out of nowhere. Noise reduction is better on the K3 in CW mode, however. It sounds mushy on the Omni VII. I hope something can be done to improve the NR in SSB mode. Thanks. Roy Morris W4WFB K2 #2225 K3 # 323 K3 # 2810 __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] PSK 31
More tips: Make sure you've updated to the latest beta firmware (3.06).. Then hold DISP to get the ALC display. Set power to 15W or so (or 10 if you have the K3/10). Adjust the LINE knob (right of the RX RF Gain knob) until the bars reach teh frist big ALC bar, #5. Leigh/WA5ZNU > Ron AE6RH wrote: > >> I've been playing around with PSK-31 and can sort of get it working, using >> the K-3 and the Elecraft software. I am able to send by typing text __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
> You are right Jay. Bands 1 and 2 do nothing. There's nothing to reduce! On my modified K3, adjusting band 2 (100Hz) will produce bone-jarring bass when boosted above +5 dB. However, even though my moded K3 easily produces audible beats down to 30 Hz, adjusting Rx EQ band 1 (50 Hz) has no effect whatsoever. I just tired this by approaching zero-beat on a CW carrier, then backing off the display frequency in 50 Hz and 100 Hz increments. Band 2 works quite well while band 1 seems to produce no change in Rx EQ. Lyle/Wayne, can you confirm that band 1 is actually engaged in the firmware? If it is, then there's some other causation pre-AF amp. Paul, W9AC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Elecraft Digest, Vol 60, Issue 10
Re Hissing Audio I must make a comment here, re the hissy audio. postings. Not my findings, I find the audio of the K3 the best I've ever found in a communications rx in over 50 years. In basic "flat response form" as default set up , I found the audio "basey" for rx, and when transmitting, I had reports of too much base. Playing with the EQ setting, which allow a great range of adjustment, I have now corrected this both using rx eq and tx eq.I normally use headphones, but the K3 is the only rig I have where speaker audio is acceptable. In fact good! David VK3DBD / G3SCD > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] For Sale: E-MU0202 USB Soundcard for LP-PAN
If you have a fast computer and want the best performance from your LP-PAN panadapter, the E-MU is for you. This is a brand new, unused unit in the original packaging. It comes with everything in the box straigt from the retailer. $95.00 plus Priority Mail shipping. 73 de K6SBA David Inger __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 external speakers
I have had these Best Buy speaker since Dec 1, small and sound great. Am very pleased with them 73, Ty, K3 696 --- On Sat, 4/4/09, Jay Rodaman wrote: > From: Jay Rodaman > Subject: Re: [Elecraft] K3 external speakers > To: elecraft@mailman.qth.net > Date: Saturday, April 4, 2009, 2:45 PM > I have also had a similar need for external speakers. > The recommendation from an "unnamed source (heh heh) > " on the left coast > was the following > > > http://www.bestbuy.com/site/olspage.jsp?skuId=7314523&type=product&id=111884 > 3685964 > > they are not very expensive , to the delete of most of us > and seem to work quite well > > Jay > > > > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Ken > Kopp > Sent: Saturday, April 04, 2009 2:18 PM > To: elecraft@mailman.qth.net > Subject: [Elecraft] K3 external speakers > > The following may well be obvious to most, but I know of > at least three K3 owners who've been "caught" > by plugging > mono plugs into the (stereo) speaker jack. > > There is a "gotcha" involved in the use of > external speakers > with the K3. It's addressed indirectly on page 20 of > the D2 > version of the manual in the 2nd paragraph under PHONES > when it reads "... if you use a stereo plug at the > external > speaker jack but is easily glossed over by the reader. > > Many / most monaural external speakers have a MONAURAL > plug on their cords. DON'T plug one of these > (monaural) plugs > into the speaker jack. It's configured for stereo and > the sleeve > of the mono plug will short the ring portion of the stereo > jack > and thereby short one channel of audio. I ... along with > several > others ... have experienced a failure of the audio > amplifier IC on > the front panel board due to one channel being shorted by > the > sleeve of a monaural plug. It seems to take many hours of > > operation under this condition to cause the IC to fail ... > over a > year in mine and another's case. The IC is -NOT- an > easy change! > > Just remember that one audio channel is on the tip and the > other > is on the ring of the plug and connect speakers in this > manner > using -only- a stereo plug. My particular "trap" > was forgetting that > using a stereo "Y" merely moved the > "trap" six inches away from > the jack. (;-) > > As others have pointed out, speakers from the two-radio > field are > good choices, and the CB isle at truck stops usually sell > nice > speakers. Mine are Barjan 320-701's. Radio Scrap > 21-549B's > are OK, too. > > 73! Ken Kopp - K0PP > elecraftcov...@rfwave.net > http://tinyurl.com/7lm3m5 > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] PSK 31
For the "novice/apprentice" PSK31 operator the best starter text I have seen is: Nifty E-Z Guide to PSK31 Operation Bernie Lafrenierer, N6FN 2008, Nifty Ham Accessories www.niftyaccessories.com In 64 pages it will get you out of the starting gate with a winning weight. The main discussion uses the Digipan software as the teaching platform. You will be fully successful with this reference. If you are upgrading your K3 with a PC then that connection is already done. The only other connections, two of them, use standard 1/8" STEREO male plug on each end cables. After that it is all software and a few configuration setups on the K3. I worked more DX on 20 meters last weekend on the standard PSK31 base frequency than I ever had before since I got my K3 last year. Have fun Richard K5BWV ... . __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 Hissy and Noisy Audio
>Audio is notorious for having a very subjective vocabulary, and this may make it hard to understand what is meant. I hear terms like hissy, rounder, lack of bass etc in this discussion. In an attempt to make this discussion more to the point I would suggest this list compiled by Bruce Bartlett from Pro Audio 1997. I find it helpful in making discussions focused: http://www.linkwitzlab.com/images/graphics/sd-qulty.gif >According to the list, I would suggest that those who have a problem with the K3 audio look up these terms: > 'bright', 'edgy', 'grainy', 'grungy', 'hard', 'harsh', 'muddy', 'piercing', 'thin' > to find what best describes what they hear. That may give a common ground for describing the effects. Okay, based on the referenced descriptions I can 100% definitely with absolute assurance say that my K3 audio is edgy, grainy, grungy and strident. Now can we get on with a solution? Mike Scott Tarzana, CA __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
Perhaps I'm in the minority hereusing some nice quality hi-fi bookshelf speakers.I love the way the K3 sounds. YMMV John, N6AX Mike Scott wrote: >> Audio is notorious for having a very subjective vocabulary, and this may >> > make it hard to understand what is meant. I hear terms like hissy, rounder, > lack of bass etc in this discussion. In an attempt to make this discussion > more to the point I would suggest this list compiled by Bruce Bartlett from > Pro Audio 1997. I find it helpful in making discussions focused: > http://www.linkwitzlab.com/images/graphics/sd-qulty.gif > > > > >> According to the list, I would suggest that those who have a problem with >> > the K3 audio look up these terms: > > > > >> 'bright', 'edgy', 'grainy', 'grungy', 'hard', 'harsh', 'muddy', >> > 'piercing', 'thin' > > > > >> to find what best describes what they hear. That may give a common ground >> > for describing the effects. > > > > Okay, based on the referenced descriptions I can 100% definitely with > absolute assurance say that my K3 audio is edgy, grainy, grungy and > strident. Now can we get on with a solution? > > > > > > Mike Scott > > Tarzana, CA > > > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Hissy and Noisy Audio
> Looking at Spectra right out of the Phones output, I don't > see where bands 1or 2 do all that much in lowering K3's bass. You won't see much on the headphone output because of the 10 uF coupling capacitors. The effect is quite obvious on both the speaker output and the line output (if you have made the line out modification [R19/20] in K3AF Mod Rev 3). If you replace the 10 uF headphone coupling capacitors with 330 uF caps as recommended by W9AC the headphone output will more like a good external speaker. 73, ... Joe, W4TV > -Original Message- > From: Jay Bromley [mailto:jayw5...@gmail.com] > Sent: Monday, April 06, 2009 7:47 PM > To: li...@subich.com; 'Roy Morris'; elecraft@mailman.qth.net > Subject: Re: [Elecraft] K3 Hissy and Noisy Audio > > > Hi Joe, > Looking at Spectra right out of the Phones output, I don't > see where bands > 1or 2 do all that much in lowering K3's bass. > > Having the rig on SSB using the 2.7 Khz filter, the "Lo" on > 0, I see no > change on bands 1 and 2 when I set them to -16. What I am > missing here? I > have never seen or heard too much bass in the K3. > > I did a plot at 0 dB, one at -16 on band 1 and another one on > -16 on band 2 > if anyone would like to see them. > > 73 de w5jay/jay.. > > > > > > >> Perhaps NR could also be improved with more low > >> frequencies in the passband. > > > > Please NO! I already run RX Audio bands 1 and 2 at -16 dB to > > eliminate excessive bass - no more bass, please! > > > > The hiss many seem to be complaining about is broadband > noise in the > > audio (speaker) and/or headphone amplifier. It is more noticeable > > when driving low impedance loads (8/16 Ohm) due to the > relatively high > > gain (14 dB) of the speaker amplifier and the high > frequency boosting > > effect of the 33 pF capacitors in parallel with the gain setting > > (feedback resistors). > > > > 73, > > > > ... Joe, W4TV > > > > > > > > > >> -Original Message- > >> From: elecraft-boun...@mailman.qth.net > >> [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Roy Morris > >> Sent: Monday, April 06, 2009 2:01 PM > >> To: elecraft@mailman.qth.net > >> Subject: [Elecraft] K3 Hissy and Noisy Audio > >> > >> > >> I concur with what has been said regarding the "hissy" audio. The > >> receiver audio seems to be on the mid-range to high frequency side > >> without enough low frequencies in the passband. > Experiments with RX > >> EQ apparently have not done anything to eliminate this hiss, but > >> maybe the firmware can be adjusted to increase the low-end > response > >> of the receiver passband. If this doesn't work, maybe a component > >> change is in order. > >> > >> I also think the noise reduction is too sharp in both SSB and CW. > >> Perhaps NR could also be improved with more low frequencies in the > >> passband. > >> > >> Roy Morris W4WFB > >> K2 #2225 > >> K3 #323 > >> K3 #2810 > >> __ > >> Elecraft mailing list > >> Home: http://mailman.qth.net/mailman/listinfo/elecraft > >> Help: http://mailman.qth.net/mmfaq.htm > >> Post: mailto:Elecraft@mailman.qth.net > >> > >> This list hosted by: http://www.qsl.net > >> Please help support this email list: http://www.qsl.net/donate.html > > > > __ > > Elecraft mailing list > > Home: http://mailman.qth.net/mailman/listinfo/elecraft > > Help: http://mailman.qth.net/mmfaq.htm > > Post: mailto:Elecraft@mailman.qth.net > > > > This list hosted by: http://www.qsl.net > > Please help support this email list: http://www.qsl.net/donate.html > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Mods/Addition suggestions for order of installplease
Jay, you may want to consider doing one mod at a time. That way, if something goes wrong you know exactly where to look. If you do all then you may be looking for a needle in a haystack. 73, Fred, AE6IC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] PSK 31
I looked through this guide at Radiofest in Monterey, CA and it looked good. Leigh/WA5ZNU > For the "novice/apprentice" PSK31 operator the best starter text I > have seen is: > > Nifty E-Z Guide to PSK31 Operation > > Bernie Lafrenierer, N6FN > 2008, Nifty Ham Accessories > www.niftyaccessories.com > > In 64 pages it will get you out of the starting gate with a winning > weight. The main discussion uses the Digipan software as the teaching > platform. > > You will be fully successful with this reference. > > If you are upgrading your K3 with a PC then that connection is already > done. > > The only other connections, two of them, use standard 1/8" STEREO male > plug on each end cables. > > After that it is all software and a few configuration setups on the K3. > > I worked more DX on 20 meters last weekend on the standard PSK31 base > frequency than I ever had before since I got my K3 last year. > > Have fun > > Richard > K5BWV > > > > > ... > > . __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] My K3's hissy and noisy audio
> Now upgrade the series caps to 330 uF and re-run the > calculation. With 32-ohm phones (ref 100 Hz), the frequency > response improves to 15 Hz. Now that's t real Hi-Fi on par > with what Icom delivers and the difference is immediately > noticeable to anyone -- not just the folks with "golden ears." On the other hand, plug a Heil ProSet with its 200 Ohm elements into an unmodified K3 and the -3dB point is 80 Hz ... low enough for communications use without being overly sensitive to hum and other low frequency noise, Similarly, with 8 Ohm speakers, the -3 dB point is 40 Hz with the 470 uF coupling capacitors in the speaker amp. 73, ... Joe, W4TV > -Original Message- > From: elecraft-boun...@mailman.qth.net > [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Paul > Christensen > Sent: Monday, April 06, 2009 6:54 AM > To: elecraft@mailman.qth.net > Subject: Re: [Elecraft] My K3's hissy and noisy audio > > > > Perhaps the band noise is more obvious in the K3 because the low > > frequency audio is restricted causing the noise to be > distributed over > > a more narrow range. This lack of bass tends to induce for ear > > fatigue. Steve Ellington > > I agree with Steve on this one. Once more low-end was rolled > into my audio > hardware changes, I noticed a significant reduction in my own > listener > fatigue. > > Others have noted the K3's audio frequency response variance across > different headphone models, most notably the Heil product. The K3's > headphone circuit uses 10 uF of series capacitance from the > headphone amp to > each of the headphone coils. > > For the moment, assume that your headphones are 32-ohms (ref > 100Hz). What > is the best possible low-end response from the K3? The > answer is 500 Hz > @ -3dB. That part of the circuit needs some help. With a > headphone Z even > lower toward 8-ohms, the attenuation of bass response is worse. > > Now upgrade the series caps to 330 uF and re-run the > calculation. With > 32-ohm phones (ref 100 Hz), the frequency response improves > to 15 Hz. Now > that's t real Hi-Fi on par with what Icom delivers and the > difference is > immediately noticeable to anyone -- not just the folks with > "golden ears." > > Finally, compare the result of the modified K3 with the Icom > '7700 or '7800. > > Paul, W9AC > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] OT: J and -31 mix toroids
On Mon, 06 Apr 2009 17:03:50 -0400, Jack Smith wrote: >You might wish to experiment with Steward mix 35 or 40 toroids. Mix 35 >has a relative permeability of 5000 and mix 40 is 10,000. Fair-Rite's 31 >material has a relative permeability of 1500. Relative permeabilility varies with frequency -- it is NOT a constant (unless you use a parallel equivalent circuit). The numbers you are quoting are low frequency values. >Steward's 35 and 40 material are MnZn ferrites and will have dimensional >resonance in the HF frequency range, with the exact frequency depending >on the core dimension. I suspect that dimensional resonance won't be an >issue for a current choke at your frequency range, however. Fair-Rite >claims the 31 material, although also a MnZn ferrite, does not have >dimensional resonance. Fair-Rite has always said that -- they said it to me six years ago when I first convinced them to make #31 toroids! Perhaps they said it because they viewed it as a negative. Or perhaps they wanted to throw off their competitors. :) But our data for multiturn chokes disproves that! Fair-Rite #31 DOES have a mild dimensional resonance in the 2-5 MHz range. That is what gives the pronounced broadening of the impedance curve when you wind enough turns to move the circuit resonance below 5 MHz! That is, the dimensional resonance and the circuit resonance combine to act as very low Q stagger tuned circuits, extending the usefulness of the choke by something on the order of 3/4 octave as compared to materials like #43. That means that a single choke on #31 can cover 160, 80, and 40 effectively, and still be decent on 30M. With fewer turns it can cover 80-20. And so on. >Type 43 is a NiZn ferrite and does not have >dimensional resonance in the HF frequency band. In general, NiZn ferrites exhibit no measureable dimensional resonance because it occurs at VHF, where it is damped by the loss in the core. To answer Julius's question directly. See my "Choke Cookbook" for specific recommendations on winding chokes for the HF bands. http://audiosystemsgroup.com/RFI-Ham.pdf BTW -- I just got an email from Jay Terleski, WX0B, telling me that he is now stocking #31 toroids, bought out Fair-Rite's stock (900 pieces), and has more on order. He didn't quote prices. Jay also told me that he is now using #31 material for the high power transmitting chokes that he builds. I suggest that you ask for a quote on at least 20 pieces. As active as you are, you'll put them to good use in a few months! 73, Jim Brown K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
[Elecraft] K3 - Faulty VFO B encoder
Greg It's a faulty encoder - I had two of them go bad with these same symptoms. Talk to the guys at supp...@elecraft.com and they will replace it. 73 Tom G3OLB I have a K3 SN 1553 When I first power up the K3 the VFO B works correctly. After about 1 minute it starts to get eratic and then stops working completly. I have re-loaded the latest (non Beta) Firmware. I checked to to see that the VFO B encoder is properly seated to the connector. Seems like a temperature related problem. FP temp is normal 27 C Has anyone seen a similar problem or have any hints where to start troubleshooting? Thanks,? Greg WA1JXR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] Mods/Addition suggestions for order of installplease
Very true, but how many times do you want to strip down the rig with the risk that implies to fastener failure, static damage, scratches etc? 73 de M0XDF, K3 #174 -- Ideas are like rabbits. You get a couple and learn how to handle them, and pretty soon you have a dozen. --John Steinbeck, novelist, Nobel laureate (1902-1968) On 7 Apr 2009, at 04:47, Fred Atchley wrote: > Jay, you may want to consider doing one mod at a time. That way, if > something goes wrong you know exactly where to look. If you do all > then you > may be looking for a needle in a haystack. 73, Fred, AE6IC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
Re: [Elecraft] PSK 31
Ron, For PSK31 i use Digipan since many years and HRD since ~ 1 year; if you want to have a waterfall display, i think that "external" software, PC and sound card are a necessity. I've just tried to work PSK31 with my K3 (#1212), no problem with RX, but i find that transmitting is less easy, it's my point of vue, than using Digipan (for example); i find it easy to use and we have also a "panoramic" sight of in filter band adjacent stations. I also appreciate the "Tune" mode of Digipan; after one year of HRD use, i don't find the equivalent function... 73 QRO de Rudolf, HB9ARI PS No relation with Digipan writer(s), just a very satisfied user! Ron Midwin wrote: > Gentlemen: > > > > I've been playing around with PSK-31 and can sort of get it working, using > the K-3 and the Elecraft software. I am able to send by typing text into > the software, and someone on the same frequency can hear and copy me. I was > having difficulty copying him, even thought I was hear his warble. > > > > I also have a copy of HRD, which is quite complicated to use, so I've put > that off, even though I hear great things about it. > > > > My question is, does anyone have an application note; PSK-31 on a K-3 for > dummies, that would give me a simple way to play with it? > > > > I've used PSK-31 before on a previous 746 Pro and a Tigertronics USB box, > and it worked fine. I was able to see the waterfall on my computer screen > and could select a signal by clicking on the signal on the display. Not > sure if I can still do this using elecraft software? > > > > I have my K-3 connected to my laptop computer with a USB-serial adapter, > which works fine. Do I need to use the sound card in my laptop too? > > > > Thanks, > > > > Ron > > AE6RH > > S/N 1997 > > > > > > > > Ron Midwin > > __ > Elecraft mailing list > Home: http://mailman.qth.net/mailman/listinfo/elecraft > Help: http://mailman.qth.net/mmfaq.htm > Post: mailto:Elecraft@mailman.qth.net > > This list hosted by: http://www.qsl.net > Please help support this email list: http://www.qsl.net/donate.html > > __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
