Re: [Elecraft] [K3] questions about using a sub-receiver

Hi Robert, I feel your pain. The Main and Sub receivers are tremendously flexible and figuring it out lead me to write the first Elecraft K3 book. The latest edition, "The Elecraft K3s and P3" might help you learn more, including how they both can work separately or together, including the mi

Re: [Elecraft] [K3] questions about using a sub-receiver

the You can consider the 2nd rx as a completely separate radio - unique filters, unique dsp, etc And yes, using the SUB function on the front panel, you can select diversity receive (2nd rx is on the same freq as your primary VFO, receiving with a different antenna) or normal SUB (2nd rx is on 2nd

Re: [Elecraft] [K3] questions about using a sub-receiver

Just to clarify. The “yes” answers apply to the questions you posed, not the negative which immediately follows. Grant NQ5T K3 #2091 KX3 #8342 > On Mar 5, 2019, at 9:38 PM, Grant Youngman wrote: > > > >> On Mar 5, 2019, at 8:57 PM, Robert G Strickland via Elecraft >> wrote: >> >> If/when

Re: [Elecraft] [K3] questions about using a sub-receiver

> On Mar 5, 2019, at 8:57 PM, Robert G Strickland via Elecraft > wrote: > > If/when I install a sub-receiver in my K3 [SN 6232] will I be able to hear > each receiver separately in each side of my stereo headphones? If so, ok. If > not, is there some way/work around to make this possible?

[Elecraft] [K3] questions about using a sub-receiver

If/when I install a sub-receiver in my K3 [SN 6232] will I be able to hear each receiver separately in each side of my stereo headphones? If so, ok. If not, is there some way/work around to make this possible? Is the DSP of the basic radio able to have two concurrent settings, one for each of

Re: [Elecraft] K3 Questions and gripes

Second what Joe said... On Tue, Dec 14, 2010 at 12:27 PM, Joe Subich, W4TV wrote: > >  > If you have the 6-kHz filter installed, you can increase the >  > effectiveness of the DSP NB with some kinds of noise in SSB mode; just >  > set WIDTH above 2.8 kHz so this wider filter will be selected. > >

Re: [Elecraft] K3 Questions and gripes

> If you have the 6-kHz filter installed, you can increase the > effectiveness of the DSP NB with some kinds of noise in SSB mode; just > set WIDTH above 2.8 kHz so this wider filter will be selected. Or modify your configuration so the wider roofing filter is always selected in SSB . Wayne,

Re: [Elecraft] K3 Questions and gripes

Your "In the absence of strong signals" caveat is a big one. The entirely DSP key-click nullification works. I would think that if a pulse is detected, and the wave shape of the pulse artifact after filtering is known, that the known shape can be used in some digital fashion to remove it. Or to

Re: [Elecraft] K3 Questions and gripes

My comments apply to ONLY the IF (hardware) noise blanker. Sorry I didn't make that clear, but I'm a hardware guy. The reason for having the IF NB is that short-duration noise pulses, like the ubiquitous power line noise, must be detected ahead of narrow bandpass filters, which effectively len

Re: [Elecraft] K3 Questions and gripes

The K3 has a dual methodology. 1) DSP and 2) traditional analog IF pulse detection noise blanking which shuts off the IF for very short intervals around the pulse. Doesn't your commentary only apply to the IF NB methods of the K3? The DSP methods take place in firmware, analyzing and adjusting th

Re: [Elecraft] K3 Questions and gripes

Scott, On Dec 14, 2010, at 8:28 AM, Scott Ellington wrote: > The K3 noise blanker bandpass filter appears to have a bandwidth of > about 400 kHz > I'm just guessing, but it seems Elecraft took a different approach > in using the very wide bandwidth. This increases the peak amplitude >

Re: [Elecraft] K3 Questions and gripes

The K3 noise blanker bandpass filter appears to have a bandwidth of about 400 kHz, so any strong signal within that bandwidth will affect its operation. This is a problem with all noise blankers of this type, as they can't detect noise pulses smaller than the strongest signal within the filter

Re: [Elecraft] K3 Questions and gripes

ther radios? Maybe I got a bad pair. > 73 Hardy N7RT > > - Original Message - > From: "David F. Reed" > To: "elecraft Reflector"; > > Sent: Sunday, December 12, 2010 8:59 AM > Subject: [Elecraft] K3 Questions and gripes > > >> Hi folks;

Re: [Elecraft] K3 Questions and gripes

If you look at the K3 schematic you can see that the noise blanker takeoff point is at the output of the first post mixer amplifier.  The bandwidth here is necessarily wide.  In the blanker itself, there is a double-tuned bandpass filter at the input of the noise amplifier(s).  I don't know what

Re: [Elecraft] K3 Questions and gripes

tightened the knobs when I built the radio. Is this a problem with other radios? Maybe I got a bad pair. 73 Hardy N7RT - Original Message - From: "David F. Reed" To: "elecraft Reflector" ; Sent: Sunday, December 12, 2010 8:59 AM Subject: [Elecraft] K3 Questions and

Re: [Elecraft] K3 Questions and gripes

This is the way most analog noise blankers work. They look at a wide bandwidth to detect noise pulses and if there are loud signals in the range they can be interpreted as noise. The K3 has both an analog and a DSP noise blanker. If there are large nearby signals, you should reduce the aggres

Re: [Elecraft] K3 Questions and gripes

On Sun, Dec 12, 2010 at 9:59 AM, David F. Reed wrote: > ...with the NB on, when I noticed that I was getting a strong CW > signal pumping Dave, this is gonna happen with any noise blanker. When I turn on NB on my Brand Y radio, I can hear artifacts from a medium strength CW signal 100

[Elecraft] K3 Questions and gripes

Hi folks; Yes, I really love my K3 in spite of my questions and gripes; here they are: 1. During the 10 meter contest, I was up around 28.400 operating SSB with the NB on, when I noticed that I was getting a strong CW signal pumping my AGC (or so it seemed). In doing a littl

Re: [Elecraft] K3 Questions posted

sarcasm as well... > >Cheers, >James K2QI > >-Original Message- >From: elecraft-boun...@mailman.qth.net >[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of rfenab...@gmail.com >Sent: Monday, December 07, 2009 8:17 PM >To: Elecraft >Subject: [Elecraft] K3 Questions

Re: [Elecraft] K3 Questions posted

...@mailman.qth.net] On Behalf Of rfenab...@gmail.com Sent: Monday, December 07, 2009 8:17 PM To: Elecraft Subject: [Elecraft] K3 Questions posted IMHO 1. I didn't think questions posted on the reflector HAD to be answered or commented on 2. When a touch of sarcasm is detected I for one, immedi

[Elecraft] K3 Questions posted

IMHO 1. I didn't think questions posted on the reflector HAD to be answered or commented on 2. When a touch of sarcasm is detected I for one, immediately reach for the Delete key But it is a lovely day and my construction is going well so the smile is firmly planted across my face, as rough l

Re: [Elecraft] [K3] Questions about ARRL review

Hi Geoff, >> Which could be taken care of by using a 6dB resistive pad, should the >> lower loss become a problem. > > A pity to lose any potential improvement in overall noise figure by > doing that, especially on the higher bands! Yep. It would be nice to avoid the resistive pad but any "gain"

Re: [Elecraft] [K3] Questions about ARRL review

Toby Deinhardt wrote on Thursday, November 27, 2008 3:33 PM: Hi Toby, It also depends on whether you are talking about signals within the pass band of the roofing filter or signals in the stop band. I would argue that within the roofing pass band the K3 does have weaknesses, but if the roofin

Re: [Elecraft] [K3] Questions about ARRL review

Hi lyle & the List, ... higher distortion of the Nutzsignal due ... das Nutzsignal = the wanted signal Sorry about the German which kinda snuck in. vy 73 de toby ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to

Re: [Elecraft] [K3] Questions about ARRL review

Hi Lyle, If you look at the larger values of attenuation (134 vs 115, or 113 vs 93) the result is mostly due to the difference in shape factor of the roofing filter. Expressed differently, an 8-pole filter is likely to have a steeper slope in its selectivity curve than a 5-pole filter. But

Re: [Elecraft] [K3] Questions about ARRL review

Table 2 of the ARRL review finally answered my questions about the relative performance of the 2700 and 2800 Hz filters at 1 Hz and 2 Hz spacing. The results are very impressive. Can someone explain to me why the above/below results for these two filters are so disparate at these narrow spacings?

Re: [Elecraft] [K3] Questions about ARRL review

Hi Geoff, >> Not to forget that in a design such as the K3, it's the first 20dB to >> 30dB of stop band attenuation which are really important. > > Maybe, assuming that the IMD performance of the roofer and ALL stages > which follow the roofer is good enough at those spacings. It also depends o

Re: [Elecraft] [K3] Questions about ARRL review

Toby Deinhardt wrote on Thursday, November 27, 2008 at 9:17 AM: you might want to read the description by PA3AKE, especially the chapters on his development of his roofers: He talks about, among other things, how important clean surfaces

Re: [Elecraft] [K3] Questions about ARRL review

Hi Doug, > Can someone explain to me why the above/below results > for these two filters are so disparate at these narrow > spacings? Let me speculate... you might want to read the description by PA3AKE, especially the chapters on his development of his roofers:

Re: [Elecraft] [K3] Questions about ARRL review

Doug, I have never seen a crystal filter that is truly symmetrical. That is just the "facts of life". The real question is, just how much asymmetry is the user willing to tolerate. Since this is a roofing filter, and not the ultimate filter for the K3, I tend to believe that the 5 pole fil

[Elecraft] [K3] Questions about ARRL review

Table 2 of the ARRL review finally answered my questions about the relative performance of the 2700 and 2800 Hz filters at 1 Hz and 2 Hz spacing. The results are very impressive. Can someone explain to me why the above/below results for these two filters are so disparate at these narrow spacings?

[Elecraft] [K3] Questions and K3 options? Please!

I am a cw guy and use the standard 2.7 kHz 5-pole filter and the 400 Hz 8-pole filter. I find them to be an excellent combination. 73, Norm - W1MO ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list

Re: [Elecraft] K3 Questions

W0JFR wrote: > > Two questions: > 1. I hear weak hetrodynes on 20m about every 1 KHz from 13.900 to roughly > 14.040 MHz. I removed the antenna and got the same. Is this normal? If > not, what do I do to get rid of them? > > 2. The advertised power of the K3 is 100w, but it allows you to go to

[Elecraft] K3 Questions

Two questions: 1. I hear weak hetrodynes on 20m about every 1 KHz from 13.900 to roughly 14.040 MHz. I removed the antenna and got the same. Is this normal? If not, what do I do to get rid of them? 2. The advertised power of the K3 is 100w, but it allows you to go to 120w (my wattmeter actually

Re: [Elecraft] K3 Questions

... The manual says pin 6 has 8v. This post says "5v when BIAS is on". You may have misread my post, or I may not have been sufficiently clear. Front panel Mic Jack Pin 1 (Mic Audio) has 5V if and only if BIAS is set on, such as you might need for electret microphones. Otherwise it has none,

Re: [Elecraft] K3 Questions

al Message - From: "lyle johnson" <[EMAIL PROTECTED]> To: "Joe Word" <[EMAIL PROTECTED]>; Sent: Thursday, May 15, 2008 10:55 AM Subject: Re: [Elecraft] K3 Questions 1. How many volts is the mic bias? Rear Panel: 8V when BIAS is on. Front Panel: 5V when

Re: [Elecraft] K3 Questions

1. How many volts is the mic bias? Rear Panel: 8V when BIAS is on. Front Panel: 5V when BIAS is on. Front Panel Mic Jack pin 6: 8V always on. 2. Why does the filter selection always end in 5 (2.65, 2.75, 2.85 & etc)? The filter system is currently handled in 50 Hz steps. Might change in a

[Elecraft] K3 Questions

1. How many volts is the mic bias? 2. Why does the filter selection always end in 5 (2.65, 2.75, 2.85 & etc)? 3. Can the Absolute S Meter function be set to ignore the RF Gain setting? Thanks and 73, Joe N9VX K3 #841 ___ Elecraft mailing list Pos

[Elecraft] K3: Questions for the VHF DXers..

Hi Folks. My 2nd batch K3 will be used primarily for 6m and as a driver for a 2m transverter - afterall, that's the sole purpose of a good HF rig isn't it? :-). I have 2 questions I hope someone can answer.. 1. Despite studying the sub-receiver / antenna switching diagram, I just can't see h

Re: [Elecraft] K3 Questions

Toby Pennington wrote: Does Elecraft build their own modules or are they contracted out to a 3rd party? A subcontractor builds the boards. IS keying for CW done with relays or with diodes? Keying is all solid-state. Since serial number 31 was a kit, is there a second production line for

[Elecraft] K3 Questions

Does Elecraft build their own modules or are they contracted out to a 3rd party? IS keying for CW done with relays or with diodes? Since serial number 31 was a kit, is there a second production line for assembled units, or do they only have one production line for both kits and assembled u

[Elecraft] K3 questions

___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/subscribers.htm

Re: [Elecraft] K3 Questions

...Does the K3 require the use of a null modem cable? No, a standard, straight-through, pin-for-pin, male-to-female, 9-pin serial cable is all that is required. Will one made to K2 specs be OK, or are other RS-232 signals required to be connected? The 3-wire cable for the K2 will work for get

Re: [Elecraft] K3 Questions

On 8/21/07, Lyle Johnson <[EMAIL PROTECTED]> wrote: > > ...Does the K3 require the use of a null modem cable? > > No, a standard, straight-through, pin-for-pin, male-to-female, 9-pin > serial cable is all that is required. > > 73, > > Lyle KK7P Will one made to K2 specs be OK, or are other RS-232

Re: [Elecraft] K3 Questions

...Does the K3 require the use of a null modem cable? No, a standard, straight-through, pin-for-pin, male-to-female, 9-pin serial cable is all that is required. 73, Lyle KK7P ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be

[Elecraft] K3 Questions

While I wait for my K3 to arrive, I need to make an RS232 cable from the K3 to my computer serial port. Does the K3 require the use of a null modem cable? I assume to control the K3 with Ham Radio Deluxe & Logger32, data needs to be transmitted back & forth between the rig & the software program vi

Re: [Elecraft] K3 Questions

Corboy-Poteet wrote: David. let me pose a question: if you converted the digitized voice signal to mp3 or ogg format, is this similar to (or the same as) a I don't know the fine details of ogg, but mp3 is certainly frequency domain, and I think ogg will be the same. mp3 is fairly complicated

Re[2]: [Elecraft] K3 Questions

David. let me pose a question: if you converted the digitized voice signal to mp3 or ogg format, is this similar to (or the same as) a freq domain data stream? The data compression from CD wav file to mp3 is around 10 to 1; you are certainly not storing a digital copy of the sound wave. Voice com

Re: [Elecraft] K3 Questions

Stuart Rohre wrote: In the basics of digitizing the signal you have to clock the conversion at least twice the highest frequency you want to reproduce in the voice (or audio) signal. That's only at the input to the encoding chain (and technically it is twice the bandwidth, not twice the highe

Re: [Elecraft] K3 Questions

Matthew, This is covered well in the FAQ. But for a short answer, yes. Withe the optional DVR installed, a portion of the available space for recording is reserved for audio feedback for just such cases. I believe this is still being tested so I am not sure exactly which control items will

Re: [Elecraft] K3 Questions

Guys, I'm finally getting around to asking a question about the K3 that will help a fellow ham decide whether or not he will be buying one; does it currently, or is it possible for a future firmware revision, for it to support voice feedback? My friend's reason for wanting to know is because h

Re: [Elecraft] K3 Questions

In the basics of digitizing the signal you have to clock the conversion at least twice the highest frequency you want to reproduce in the voice (or audio) signal. Now, you can sample a number of ways. You can use one sample per clock cycle, or you could do some of the phase shift techniques in

Re[2]: [Elecraft] K3 Questions.& ..DVoice

Stuart, what bandwidth do the Public Service people use on their digital systems? And let me ask you my earlier question: what happens on digital voice when you decrease the bandwidth on reception? Can you significantly improve signal-to-noise by narrowing the bandwidth (with only a loss of fideli

Re: [Elecraft] K3 Questions.& ..DVoice

Absolutely good points about the fail soft nature of analogue signals. While the new digital systems usually have a threshold, and fail hard, ie, the message does not get thru even partially, after a certain loss of signal point! This is why analogue ham communications get thru in disasters, an

Re: [Elecraft] K3 Questions.& ..DVoice

At 03:29 AM 6/27/2007, John GM4SLV wrote: On Wed, 27 Jun 2007, Julian G4ILO wrote: ...then you switch to analogue SSB until the signal goes below the threshold of S/N that makes SSB readable, after which you switch to CW and give yourself another 17dB to play with... when icom demos their dsta

Re: [Elecraft] K3 Questions

On Wed, 27 Jun 2007, Julian G4ILO wrote: > On 6/27/07, Corboy-Poteet <[EMAIL PROTECTED]> wrote: > > > > I am not a big voice mode fan but I do believe that SSB is headed > > toward the same ditch currently occupied by AM. Maybe Elecraft can > > help set the direction for future voice modes. > >

Re: [Elecraft] K3 Questions

On 6/27/07, Corboy-Poteet <[EMAIL PROTECTED]> wrote: I am not a big voice mode fan but I do believe that SSB is headed toward the same ditch currently occupied by AM. Maybe Elecraft can help set the direction for future voice modes. Isn't digital voice just another fad like some of the new da

[Elecraft] K3 Questions

I asked this earlier but suppose it was lost in the early frenzy so I will pose the question again along with a couple more. The basic question concerns digital voice modulation. There is no current standard but AOR is using an open protocol from G4GUO. Unlike SSB, digital voice will require some

Re: [Elecraft] K3 Questions, some will be answered over time.

I placed an order for the K3 as soon as I saw it at Visalia. I tuned it, poked its buttons and "kicked its tires" and I knew I had to have one. At first I put in a no money down order but the more I thought about the level of Elecraft engineering expertise and the unmatched customer service I re

Re: [Elecraft] K3 Questions ..... Delay Product?

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 I agree. Seems the last week to 10 days the reflector has been nothing but suggestions on how to "improve" a product which hasn't even gone into production yet. The K3 is what it is. There seems to be a lot of suggestions aimed at turning the K3 into

RE: [Elecraft] K3 Questions ..... Delay Product?

> fabulous and have greatly weakened my "I don't need > a K3" position. > Do you realize the Basic K3/100 is about what my Kenwood TS 520S cost in 1979? 640.00 in '79 is 1,816.07 in '07. That should destroy your "I don't need a K3" position.

RE: [Elecraft] K3 Questions ..... Delay Product?

That's a valid concern, but I bet it really isn't a risk. I'm trusting that the folks at Elecraft are focused on getting the K3 done and are not letting the reflector discussion get in the way of that. Today's businesses can't survive if they don't have a clear focus and focus means they know whe

[Elecraft] K3 Questions ..... Delay Product?

I am suggesting that we all STOP sending in list questions about what the K3 has, does, or will have - and let the design/production team - get the product finished. This is not the time, to try to influence changes in a product - that hasn't even hit the streets yet! I'd like to think, that my K

Re: [Elecraft] K3 Questions, some will be answered over time.

It's called PLANNING! Also, top notch engineering! Have you ever wondered how many of these ham radio companies, including the brands that do hugh volumes of commercial radio, actually have hams designing their radios? I remember when the guys at Drake, Hallicrafters, Collins, Hammerlund, J

RE: [Elecraft] K3 Questions, some will be answered over time.

Perhaps it's either mojo or magic! Either way, it sounds exciting. Bruce - W8FU -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Don Rasmussen Sent: Wednesday, May 23, 2007 2:20 PM To: Elecraft List Subject: [Elecraft] K3 Questions, some will be ans

[Elecraft] K3 Questions, some will be answered over time.

1. Why didn't Elecraft hire a marketing consultant to cost the K3 using prices ranging from $2499 to $8000? Don't they know that: a.) A higher price adds to ownership status and b.) They'd still be competitive??? I am upset that I purchased a lower priced radio than I can afford and Elecraft h

Re: [Elecraft] K3 questions: Please send them to [EMAIL PROTECTED]

Amen Ken. On 5/1/07, Ken N9VV <[EMAIL PROTECTED]> wrote: Hi Sam, give this a try, use your browser to read the list on the About a year ago I switched all my "hobby" email subscriptions to a gmail account. I can scan email subject lines quickly to determine what is of interest, or set up filt

Re: [Elecraft] K3 questions: Please send them to [EMAIL PROTECTED]

Hi Sam, give this a try, use your browser to read the list on the web instead of individual email - maybe that will be a more comfortable way to see the messages you are interested in http://www.ac6rm.net/mailarchive/html/elecraft-list/ or http://mailman.qth.net/pipermail/elecraft/ all the best,

Re: [Elecraft] K3 questions: Please send them to [EMAIL PROTECTED]

wayne burdick wrote: This will keep the list traffic manageable. I wish it would Wayne... this is what? your what 3rd or is it 4th attempt? I have nothing against the K3, I'm thrilled for those that will be able to afford one. But I have already deleted over 250 posts on K3 and T-shirts so fa

[Elecraft] K3 questions: Please send them to [EMAIL PROTECTED]

This will keep the list traffic manageable. Thanks, Wayne N6KR --- http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): htt

[Elecraft] K3 QUESTIONS (reminder): Please send them ONLY to [EMAIL PROTECTED], not the list

Thanks, Wayne N6KR --- http://www.elecraft.com ___ Elecraft mailing list Post to: Elecraft@mailman.qth.net You must be a subscriber to post to the list. Subscriber Info (Addr. Change, sub, unsub etc.): http://mailman.qth.net/mailman/listinfo/elecraft

[Elecraft] K3 QUESTIONS: Please send them ONLY to [EMAIL PROTECTED]

Hi all, Now that the K3 has been the subject of intense discussion for three days, it's time for a change of strategy! Please send ALL questions to ONLY [EMAIL PROTECTED] rather than post them to the list. I'll get them to the right person or answer them myself, as time permits. If I don't