[Elecraft] For sale: K3s and P3 panadapter

Because I'm so happy with my K4 and now need to make some room in the shack, I'm selling my K3s and P3. K3s is the 100W version, has the auto-tuner, 2.7kHz SSB filter, K144XV 2m transverter (without reference lock board), KFL3B-FM filter, and KBPF3 modified general-coverage board. I can't say

Re: [Elecraft] KBPF3 mod SMD capacitors

Thank you, Keith, this is exactly what I needed to know! Nick On Tue, 25 Jul 2023 at 12:54, Keith Trinity WE6R wrote: > We use; C3,C4,C60.1uF , 50V, 10% X7R 0603Elecraft part # E530306 > It is not critical. > > Mouser and others have them; >

[Elecraft] KBPF3 mod SMD capacitors

I know the original KBPF3 mod kit is no longer available, but I've come across an unmodified board that I'm considering trying to source parts for to handle the mod myself. I did some searching and I read that a Nichicon RL81C221MDN1KX might work for the electrolytic cap, but I haven't found what

Re: [Elecraft] ferrites for subwoofer: before or after isolation transformers?

the same as 7. They also vacuum-seal and bubble-wrap the hell out of it so it arrives intact. Leaving this message so it's searchable by the next person. As always, I appreciate all the help and suggestions from everyone. Nick On Sat, 23 May 2020 at 17:01, Nicklas Johnson wrote: > I certai

Re: [Elecraft] ferrites for subwoofer: before or after isolation transformers?

tps://www.nk7z.net > ARRL Volunteer Examiner > ARRL Technical Specialist > ARRL Asst. Director, NW Division, Technical Resources > > On 5/23/20 2:02 PM, Nicklas Johnson wrote: > > Thanks, Dave. A very good point about the amp picking up stray RF off > > the cable and retu

Re: [Elecraft] ferrites for subwoofer: before or after isolation transformers?

osystemsgroup.com/RFI-Ham.pdf > > 73, and thanks, > Dave (NK7Z) > https://www.nk7z.net > ARRL Volunteer Examiner > ARRL Technical Specialist > ARRL Asst. Director, NW Division, Technical Resources > > On 5/23/20 10:19 AM, Nicklas Johnson wrote: > > I've got a set o

Re: [Elecraft] ferrites for subwoofer: before or after isolation transformers?

; > 73, and thanks, > Dave (NK7Z) > https://www.nk7z.net > ARRL Volunteer Examiner > ARRL Technical Specialist > ARRL Asst. Director, NW Division, Technical Resources > > On 5/23/20 9:37 AM, Nicklas Johnson wrote: > > The backstory as briefly as I can make it:

[Elecraft] ferrites for subwoofer: before or after isolation transformers?

The backstory as briefly as I can make it: I wanted to place my home theater subwoofer in the corner of our living room; doing so required running two speaker wires and a coaxial cable under the house and plugging the subwoofer into a different outlet than the AV receiver; this in turn resulted in

Re: [Elecraft] K3S current draw relative to KAT3A settings

On Tue, 12 May 2020 at 13:41, Bob McGraw K4TAX wrote: Specifically: 100 watts indicated into dummy load via external power > meter. > > for 40M the current was 15.3 amps {KAT3a bypassed} and 15.75 amps with > KAT3a active/AUTO and resolved a match > > for 20M the current was 18.5 amps {KAT3a

Re: [Elecraft] K3S current draw relative to KAT3A settings

On Tue, 12 May 2020 at 12:34, Joe Subich, W4TV wrote: What do you see with: 1) a 50 Ohm load connected to the antenna port > and the KAT3A bypassed, See the "bypassed" column in the original chart. > 2) a 50 Ohm load connected to the antenna > port and the KAT3A removed (KANT3 board

Re: [Elecraft] K3S current draw relative to KAT3A settings

On Tue, 12 May 2020 at 11:51, Joe Subich, W4TV wrote: > > > So I guess the question is this: is it expected to see such a large > > variance in power consumption for the same output power based on the > > values of C and L for the KAT3A? > Is the KAT3/KAT3A *tuned correctly*? > This came up

[Elecraft] K3S current draw relative to KAT3A settings

I've had a few exchanges with support on this, but as Covid-19 is imposing some new burdens on the shop, I thought I might ask the larger community for input as well. I've been troubleshooting seemingly anomalous power consumption when transmitting. My K3S pulls way more current on 20m than on

Re: [Elecraft] VERY noisy LCD Monitor. Any Suggestions?

My experience with some cheaper LCD monitors is that the backlight brightness is controlled by a badly designed PWM circuit. With my parents' Samsung, the noise is even audible if you're sitting next to it. The only solution I've found, if indeed this is what's giving you trouble, is to turn the

Re: [Elecraft] Will there be a K4

So basically a K3S :-D The only thing I think it might be nice to see is a way for ALE (ie, HFlink) to work/scan totally silently, which I guess would mean totally diode-switched filters and a mode where the ATU could automatically be bypassed during receive and enabled during transmit? (the

Re: [Elecraft] K3S Audio buzz on transmit, especially AM

I don't think that "collecting data" and "process of elimination" are particularly ANTI-methodical either. But the fact is that most people will never encounter this kind of problem and don't spend their days practicing how to troubleshoot it, so they seek advice from people who do have

Re: [Elecraft] K3S Audio buzz on transmit, especially AM

ponents is valid. And it may be originating in "the big green > transformer" in the yard. > > Bob, K4TAX > > > Sent from my iPhone > > > On Apr 26, 2019, at 8:53 PM, Nicklas Johnson wrote: > > > > Sorry for the additional email, but this is par

Re: [Elecraft] K3S Audio buzz on transmit, especially AM

ffect from something in the vicinity? Nick On Fri, 26 Apr 2019 at 18:11, Nicklas Johnson wrote: > A few more data points: > > Changing TX EQ, including cutting the first 4 bands all the way down to > -16 had no effect on the received signal. > > Plugging in some headphones,

Re: [Elecraft] K3S Audio buzz on transmit, especially AM

uld be done there, > preferably after the MIC input. The AM BW does not attenuate the end like > the SSB filter. > > I suggest -16 dB on the first 3 bands. > > Bob, K4TAX > > > Sent from my iPhone > > > On Apr 26, 2019, at 6:38 PM, Nicklas Johnson wrote: > >

Re: [Elecraft] K3S Audio buzz on transmit, especially AM

is a good idea for AM and SSB. Nick On Fri, 26 Apr 2019 at 15:57, Bob McGraw K4TAX wrote: > I recall commenting earlier. What TX EQ values are being used for AM. ? > > Bob, K4TAX > > > Sent from my iPhone > > > On Apr 26, 2019, at 5:48 PM, Nicklas John

Re: [Elecraft] K3S Audio buzz on transmit, especially AM

My desk in this case sits adjacent a wall, and there's only a shower on the other side of that wall. I did turn off everything in the vicinity of the desk and all the lights in the room (I've in fact heard a very similar hum from the switching power supply for my mixer, and my first thought was

Re: [Elecraft] K3S Audio buzz on transmit, especially AM

I did in fact wonder the same thing myself-- whether the solar controller could be injecting some noise or just making some noise, so when I did the battery test, I disconnected the battery from the controller and ran directly from the battery to the rig. I couldn't tell you a dB level of the

Re: [Elecraft] K3S Audio buzz on transmit, especially AM

:27, Nicklas Johnson wrote: > Again, the problem persists with all inputs completely disconnected and > the mic gain set at 0. And running solely on a battery into a dummy load. > >Nick > > On Thu, Apr 25, 2019, 10:10 PM Jim Brown > wrote: > >> On 4/25/2019

Re: [Elecraft] K3S Audio buzz on transmit, especially AM

Again, the problem persists with all inputs completely disconnected and the mic gain set at 0. And running solely on a battery into a dummy load. Nick On Thu, Apr 25, 2019, 10:10 PM Jim Brown wrote: > On 4/25/2019 8:15 PM, Nicklas Johnson wrote: > > Physically touching the case or

Re: [Elecraft] K3S Audio buzz on transmit, especially AM

That was my second thought, but then I disconnected everything, including the microphone, and it made no difference. Nick On Thu, Apr 25, 2019, 8:20 PM Grant Youngman wrote: > Microphone? Or anything in between the mic and the radio, if there is > anything? > > Grant NQ5T > K3 #2091 KX3

[Elecraft] K3S Audio buzz on transmit, especially AM

I'm trying to track down a pretty obnoxious audio problem on AM, and to a much lesser extent on SSB. On transmit I get an audio buzz with the highest spikes on 350, 470, and 830 Hz. At first I thought I had a ground loop hum, so I disconnected everything from the K3s except the antenna and

Re: [Elecraft] KX3 - Splitting receive audio between PC and external speaker?

For doing this, what I do is go into the control panel for the audio input device in Windows and check "Listen to this device", and then set the output for listening to the PC's speakers. Then if you want to hear your transmitted signal, you can also turn on the MON function of the KX3. They hid

Re: [Elecraft] K3S USB soundcard mic always monitoring TX audio

at 22:29, Nicklas Johnson wrote: > While spending some quality time with the K3s tonight, I noticed that if I > switch on the "listen to" feature in Windows to listen to the USB codec > microphone audio through my computer speakers, I always hear the audio when > transm

Re: [Elecraft] Winlink Express + K3S [SOLVED]

rd used here with Win10 desktop PC. HTH > > 73, > Brian, K0DTJ > > On 10/10/2018 22:42, Nicklas Johnson wrote: > > Somewhat related to my other post, but sufficiently different that I > > figured it should be its own thread: I consistently get the "Timeout in > T>

Re: [Elecraft] Winlink Express + K3S

in DATA-A mode with NR, NB and NTCH off and with AGC off. Using Windows 10 with all "enhancements" disabled on both cards. What else should I check or try? Can anyone else verify this same pattern? Nick On Wed, 10 Oct 2018 at 22:42, Nicklas Johnson wrote: > Somewhat relate

[Elecraft] Winlink Express + K3S

Somewhat related to my other post, but sufficiently different that I figured it should be its own thread: I consistently get the "Timeout in T>R Latency Measurement" message from Winlink Express using the built-in software Winmor TNC. After some poking around and trying different things, I set up

[Elecraft] K3S USB soundcard mic always monitoring TX audio

While spending some quality time with the K3s tonight, I noticed that if I switch on the "listen to" feature in Windows to listen to the USB codec microphone audio through my computer speakers, I always hear the audio when transmitting; ie, it behaves as though the audio being sent out the USB

Re: [Elecraft] Vocal Cord Bias + SSB PEP

https://www.soundonsound.com/sound-advice/q-why-do- > waveforms-sometimes-look-lop-sided > > wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > > On Sep 14, 2018, at 1:24 PM, Nicklas Johnson wrote: > > An audio engineering fr

[Elecraft] Vocal Cord Bias + SSB PEP

An audio engineering friend noticed in some voiceover recordings something that I've also noticed in my own waveforms, that a lot of the time, human vocal cords seem to produce a biased waveform (seemingly a positive bias most of the time). I vaguely remember reading either here on this list, or

Re: [Elecraft] K3S 2m FM squelch problem

Yup, I did a little more digging and figured it out. What I wanted was SQ MAIN to be =SUB POT to control it on the panel using the SUB knob, versus setting the squelch via the menu. All is well. Nick On 6 September 2018 at 22:06, Nicklas Johnson wrote: > This is probably a dumb quest

[Elecraft] K3S 2m FM squelch problem

This is probably a dumb question but I'll ask it anyway... Got my K3S tonight, and starting to put it through its paces. The 2m module was factory installed. The problem I have is that the RF/SQL control is still behaving like an RF control and not a squelch (ie, I always hear background

Re: [Elecraft] Intermod filter for the KX3

Second that. I have one external power supply from a well-known ham-gear manufacturer of somewhat questionable repute which throws off S9 racket all over everything, or did until I gave the output cord about 10 turns through a hefty ferrite. I'd forgotten about the RX Shift feature being

Re: [Elecraft] Suggestions for Introducing a 10-year-old to Amateur Radio and Electronics

I second this. My first foray into electronics in general and radio in particular came from the old Radio Shack / Science Fair "160 in one" and "200 in one" project kits. Prepare for a spaghetti-wire mess of jumpers between spring terminals, but it was a really great means for me to begin to

Re: [Elecraft] KX3 'S3' segment always on

). RF gain (actually loss) level is > indicated by a segment on the S-meter. > > Wayne > N6KR > > > > http://www.elecraft.com > > > On Aug 19, 2017, at 8:17 AM, Nicklas Johnson <n...@n6ol.us> wrote: > > > > I updated to the 2.76 KX3 firmware Thurs

[Elecraft] KX3 'S3' segment always on

I updated to the 2.76 KX3 firmware Thursday, and noticed when I set things up today that the bar graph segment under what would be S3 is now constantly on, true whether I'm in CMP/ALC mode or the regular mode. Is there a new feature I missed and the graph is actually telling me something useful,

Re: [Elecraft] K3S Package Discounts

I have a question on this because it wasn't immediately obvious to me when I looked at the web site the other day. Are the bundles fully assembled units, or is it possible to get a bundle in kit form? I really enjoyed the assembly of my KX3, and I really like the idea of bundling common options

Re: [Elecraft] Signing "/QRP"

On 26 July 2017 at 15:40, Joe Subich, W4TV wrote: > > Signing "/QRP" is just another manifestation of entitlement. It is a > way of saying "I'm different and I demand special treatment." > > ​I think you are reading waay more into it than what is actually there.​

Re: [Elecraft] Signing "/QRP"

I can't imagine any world in which I would get bent out of shape or judgmental about someone signing /QRP. I'm not in this hobby to see how many people I can *refuse* to speak to, let alone for a reason that would require my making assumptions about the mental or emotional state of a stranger.

Re: [Elecraft] K3S Noise reduction Test

Correct me if I'm wrong, but is it not the case that the NR on the K3 isn't just a case of "more" as you change settings, but also a case of changing the _type_ (or strategy) of NR? Or am I thinking of NB? Nick On 20 June 2017 at 10:20, Jim Brown wrote: > On

Re: [Elecraft] Taking KX3 on Airlines -Any issues/hassles with TSA/etc here days - with Bio-Engg 12V 7Ah Lithium Battery as Carry On Luggage

The only trouble I had was TSA in Hawaii confiscating my cheap wire strippers, because they have a rule against tools greater than 8 inches in length. Because of course that's how terrorists are going to hijack a plane-- with a pair of Home Depot wire strippers. Funnily enough, TSA at SFO on the

Re: [Elecraft] Who sells a small RF quiet solar charge controller?

I have one of these and it's completely silent except for the tiniest "tick" when it begins a charge cycle. https://www.amazon.com/gp/product/B0191QN7OO/ref=oh_aui_search_detailpage?ie=UTF8=1 On 16 March 2017 at 18:34, Aaron Marroquin wrote: >

Re: [Elecraft] KX3 "TUN PWR" option ignored?

wunder > K6WRU > Walter Underwood > CM87wj > http://observer.wunderwood.org/ (my blog) > > > On Feb 9, 2017, at 9:58 AM, Nicklas Johnson <n...@n6ol.us> wrote: > > > > If that's the case, it might be nice in a future firmware to make 3W the > > lowest value for

Re: [Elecraft] KX3 "TUN PWR" option ignored?

com> wrote: > Nick, > > The ATU needs about 3 watts to find a good match, and that is the default. > > 73, > Don W3FPR > > > On 2/9/2017 12:40 PM, Nicklas Johnson wrote: > >> Just noticed that using the internal tuner, the TUN PWR option on the KX3 >> seems to

[Elecraft] KX3 "TUN PWR" option ignored?

Just noticed that using the internal tuner, the TUN PWR option on the KX3 seems to be ignored, at least for any value less than 3W. That is to say, if I choose any transmit power less than 3W, the KX3 still uses 3W. Am I doing something wrong, or is there some other option overriding this one?

Re: [Elecraft] WSJT-X Problem with K3S

the K3S. The RS-232 circuits in the K3S are retained just like > as they were with the K3. > > 73, > Don W3FPR > > On 1/12/2017 1:15 PM, Nicklas Johnson wrote: > >> Unless I'm mistaken, doesn't the K3S connect directly via USB though? If >> the proble

Re: [Elecraft] WSJT-X Problem with K3S

Unless I'm mistaken, doesn't the K3S connect directly via USB though? If the problem is happening because of common mode on the USB cable, there is no physical RTS line involved like there would be in an old-style COM/RS232 device- there is only serial data going across a USB cable to a logical

Re: [Elecraft] WSJT-X Problem with K3S

The other thing, too, is if your antenna is just relatively close in proximity to your shack, it won't matter how well balanced your feedline is; you may still end up with cables inside your house that are resonant at or near the frequency where you're transmitting, or at least near enough to

Re: [Elecraft] WSJT-X Problem with K3S

e? > > John > WA1EAZ > > On Jan 12, 2017, at 10:28 AM, Nicklas Johnson <n...@n6ol.us> wrote: > > When I've had this happen with other rigs in the past, it's been because > of RF leaking back into the shack and causing CAT commands to fail (because > of common mode curr

Re: [Elecraft] Audio artifacts in DATA A mode with KX3

d my > question, which is quite simple really, why can't we get the same bandwidth > in Data mode as in SSB mode? I think it's a simple oversight, but nobody > seemed interested in acknowledging it or fixing it. > > > > > > 73 from David GM4JJJ > > > >> On 2

Re: [Elecraft] Audio artifacts in DATA A mode with KX3

JJJ had the same question here on the last back in July 2015, but never really got an answer. I basically have the same question as this one: https://www.mail-archive.com/elecraft@mailman.qth.net/msg183837.html Nick On 2 January 2017 at 12:06, Nicklas Johnson <n...@n6ol.us> wrote: > I'm

[Elecraft] Audio artifacts in DATA A mode with KX3

I'm seeing some unexpected audio artifacts when using DATA A mode with the latest production firmware on my KX3, on all bands. This is something I observe when the PBT BW is set all the way wide (4KHz) and FC is centered. In DATA mode, there's an audio drop-off between 200 and 325 Hz, with an

[Elecraft] HFlink scanning and KX3 relays

I may have a dumb question here, but I'll ask it anyway. I'm playing with HFlink which does ALE scanning on a variety of bands. As you might imagine, on some rigs, this is a fairly noisy prospect with relays snapping to select different filters. I noticed that I'm also getting relay noise from

Re: [Elecraft] KX3: nearby noise post-mortem

Now that you mention it, I did notice the buzz went away when I turned on the preamp, but I thought it was just my imagination or that the static had just become sufficiently loud that my own hearing wasn't responding to it anymore. ​Nick​ On 10 February 2014 03:02, Ralf Wilhelm

Re: [Elecraft] KX3: nearby noise post-mortem

Interesting, and if I may ask a potentially-dumb question, what do we really mean when we use the word isolation in this context, and how does it provide the benefit of keeping the buzz out of the detector (or to ask the question in the reverse, how does the buzz get in, in the absence of

Re: [Elecraft] KX3: nearby noise post-mortem

Makes sense. And that's why the RX SHFT also works, because then the reflected signal is shifted away from the RX frequency by the same amount as the shift. That was a great explanation, and I thank you for it! Another solution in my case, then, might be to just move the antenna further away

Re: [Elecraft] KX3: nearby noise post-mortem

I think that is very likely to be the case, yes. It's worth noting that it is a somewhat badly unbalanced antenna at the moment. Normally it would have a set of el-cheapo tape measures attached as radials, but the weather and time have not been kind to them, so they're not currently attached...

[Elecraft] KX3: nearby noise post-mortem

Hi all, I'm trying to make sure that I understand something kind of weird that I ran across today; I hate resolving a problem without fully appreciating everything that was causing it. Since 10M was pretty active today, I thought I'd pop on, and since the ground was nice and wet, I thought I'd

Re: [Elecraft] KX3: nearby noise post-mortem

In this case the 'transmitter' was the switching power supply in a USB cell phone charger plugged into an outlet in relatively close proximity to the antenna (other side of the wall of the house). The charger plugged in by itself put off a little noise. With the USB cable plugged into it and

Re: [Elecraft] KX3: nearby noise post-mortem

I should have mentioned this specifically, but I was operating the KX3 strictly from batteries at the time. Connecting a 13.8V source to it (one that was plugged into the house power) didn't really change whether the 'buzz' was present or not. ​The only thing that changed it was either

Re: [Elecraft] KX3: nearby noise post-mortem

That's a really good point, and in fact I have it on my 'to do' list to get the bonding done correctly. It's complicated by the ground rods being on the opposite side of the house, and the utilities running underground without an exposed ground stake by the utility box outside. I think code

Re: [Elecraft] Importance of good coaxial jumpers

At risk of going way off topic, any tips for getting a nice, solid solder connection on the shield in a reasonable amount of time? I have historically had a really hard time getting it to the point that I'm really satisfied with it, and I can't help but wonder if I'm doing something wrong, or if

Re: [Elecraft] CW Pitch Resolution

I have to agree with the assessment that there being one ideal pitch for CW is bunk. It's a load of nonsense. I'm a person who CAN perceive even tiny deviations in pitch, but CW is information encoded in the on/off timing, not in the pitch, so it seems really weird to me to try to make it

Re: [Elecraft] SDR software for KX3?

I had a lot of trouble until I put a ground-loop isolator between the KX3 and the PC. The grounding at my QTH is a bit less-than-perfect, and I was getting a 60Hz+harmonics buzz by connecting the PC to the KX3. Not saying it is the case with you, but it's just another one of those things. You

[Elecraft] Semi-OT: Traveling by air with KX3 Buddistick

After my last trip, when I got hassled by the TSA about my wire stripper (no tools longer than 7 inches, even ones that couldn't possibly hurt anyone), I thought this time I should probably ask around first... Has anyone traveled with a KX3 and a Buddistick in carry-on luggage? I've got NiMH

Re: [Elecraft] RIGblaster Advantage for Serious Digital Modes, with KX3?

I find that putting my KX3 into DATA mode to bypass all the EQ, setting the volume to 30, and setting both the in and out gain of my sound card to 8 works perfectly well. Yes, the volume on the KX3 isn't fixed, so I fix it manually by knowing what number I want to set it on (30) which gives it

Re: [Elecraft] OT: signature lines

These don't rank even in the top 100 in terms of things that keep me up at night. It's pretty annoying when an email or text or IM contains *so much* malformed spew that I have to struggle and re-read several times to transform it into something I can understand, but if I can apply quick mental

Re: [Elecraft] KX3 display question

IIRC, just tapping the PWR control will change the display between CMP/ALC and SWR/RF. On 11 September 2013 08:38, Mel farrerfo...@yahoo.com wrote: I am not sure when I noticed it, but while the manual indicates that the display can show power output and SWR, it does so only on tune. During

[Elecraft] KX3 SWR meter (RF feedback?)

Hi all, I'm currently on a trip and brought my KX3 and Buddistick with me. I also brought along my antenna analyzer. As one does when relaxing. The analyzer shows that the Buddistick is giving me = 1.5:1 SWR across the 20m band, and I did a tuner memory clear (I'm using the beta firmware) and

Re: [Elecraft] KX3 SWR meter (RF feedback?)

I'm face-palming. I should have thought of that. Fortunately I did bring an extra length of coax and a barrel connector. I wonder if maybe I could leave that 25' length of cable coiled up just as it is (though it's closer to an 8 diameter) and see if the behavior changes. Good call. I'll try

Re: [Elecraft] KX3 SWR meter (RF feedback?)

John, Thanks much for the suggestion. 10+ turns around a paper towel roll completely cured the problem. Glad I brought the extra coax and a barrel connector with me! http://i.imgur.com/ZJDFtCg.jpg 73 and thanks again, Nick On 7 September 2013 10:51, John Oppenheimer j...@kn5l.net wrote:

Re: [Elecraft] anyone using iMic with K3 or KX3 and FLdigi on a PC?

FWIW, one resource I often forget about and then remember later when doing PSK troubleshooting is the fantastic http://www.pskreporter.info/ . It really is a great help to see if your signal is getting out, and how far it is getting. (Though I think pskreporter has more jt65 reporting on it

Re: [Elecraft] 4S lipo battery for KX3?

This is the first time I've read about LiFePo4 batteries; is it correct to say that one needs to pair a 3.2V AA LiFePo4 with a dummy AA? Does the timed charger module in a KX3 play nicely with this type of battery? Nick On 25 August 2013 12:23, Mark Goldberg marklgoldb...@gmail.com wrote:

Re: [Elecraft] 4S lipo battery for KX3?

. They should have a balancing charger, many external universal RC chargers do that. I've posted links in the past to some chargers. Mark On Aug 25, 2013 12:52 PM, Nicklas Johnson n...@n6ol.us wrote: This is the first time I've read about LiFePo4 batteries; is it correct to say that one needs

Re: [Elecraft] KX3 PSK help needed

Hi Julie, A lot of laptops these days are using those annoying combo jacks, which instead of having a tip, ring, and sleeve, have a tip two rings, and a sleeve, putting the mic-in and stereo headphone-out connections one a single jack. Splitters are available online, but I have not been

Re: [Elecraft] K3 and whats next from Elecraft

The thought crossed my mind when I was looking at getting either a K3 or a KX3 too (and ultimately I decided on the KX3, which is still really new). I'll probably be in the market for something like the K3 in another year or two, and like you, if I knew the next model were coming along shortly,

Re: [Elecraft] K3 TX Power

I can't comment on the K3 specifically, but I once had something very similar happen with an Icom rig, and the problem turned out to be leaky gates in the finals, unfortunately (they had to be replaced)... though in my case the power output was a little more random compared to what you're seeing.

Re: [Elecraft] KX3 12kHz audio spike

when I use headphones) Jessie Oberreuter joberreu-...@moselle.com wrote: On Thu, 8 Aug 2013, Nicklas Johnson wrote: I did find that turning I/Q on reduced the spike significantly, but didn't eliminate it entirely. Holy Cow! That did it! Rich! I wonder if your dev unit had the rx I/Q

Re: [Elecraft] JT65 - KX3

Instruction link: http://www.elecraft.com/manual/E740169%20KX3-PCKT%20Cable%20Set%20Instructions%20Rev%200.pdf Don't forget to put the KX3 in DATA mode, select DATA A, and widen the passband for JT65-HF. I also found I needed to build and insert a ground loop isolator between the KX3 and the PC.

Re: [Elecraft] new computer advice suggestions for using with a K3

I built my own last PC, and though it isn't RF-quiet, it's pretty close, but partially by serendipity. The only thing noisy about it are the ethernet ports, and some big snap-on chokes have greatly mitigated that problem. The way I stumbled upon a fairly quiet PC has to do with some design

Re: [Elecraft] KX3 12kHz audio spike

I decided to build a thing to work around the problem when using headphones. I did find that turning I/Q on reduced the spike significantly, but didn't eliminate it entirely. I found that a pair of .47uF capacitors and a 3mH choke did a nice job of reducing the noise over 6kHz though:

[Elecraft] KX3 display/setting retention bug

This was observed with KX3 Firmware 1.50. I found what I think may be a bug in the display code or the retention of the last-used data mode bandwidth for the KX3. Steps to reproduce: 1. Tap DATA twice. 2. Select DATA A using [B]. 3. Widen the passband all the way to 4.0 with PBT I 4. Select any

Re: [Elecraft] KX3 12kHz audio spike

Lyle: I gave setting RX ISO to ON a try, and though I can see some small changes in the spectrum analyzer, it doesn't seem to change the 12 kHz spike or its harmonics. Granted, my hearing is abnormally good for my age. I can still hear up to about 18 kHz, which is pretty unusual for an

[Elecraft] KX3 12kHz audio spike

While doing some tests tonight to compare the white noise of my Icom IC-7000 to the white noise of the KX3, both having the AF gain turned all the way down, I noticed something a little unusual in the KX3's spectrum: http://imgur.com/0QF9vXh There is quite a spike of noise at 12kHz (well,

[Elecraft] KX3 review

FWIW, my long-winded and slightly-meandering KX3 review: http://n6ol.us/blog/2013/08/the-elecraft-kx3.html I wanted to get it all written down while it was still fresh in my head, so it comes after only a week of playing with it. Hopefully there's some helpful information / hints / suggestions

Re: [Elecraft] KX3 - KXBC3 NiMH Charger

By coincidence, I am also in the market for such an adapter, and found something that should work at Jameco: http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_2151208_-1 This is a 3A wall wart, so there should be enough current there to transmit and charge at the same time if

[Elecraft] New guy + two KX3 tips

Hi all, Built my KX3 yesterday, and I have to say I'm really impressed. Well done, Elecraft. The clarity of the build instructions, the photographs, and all the tips and caveats for each step were very helpful. I think I'll be even more impressed once I can find a BNC-SO239 adapter so I can