Re: [Elecraft] K4 Question

Well, that would certainly be enough for me. I have two loud line-of-sight neighbors, but they don't hit +10 dBm. Unfortunately they have "dirty" transceivers, so it doesn't matter. I suppose I should buy them K4s. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/

Re: [Elecraft] K4 Question

Hi Jim 100 watts. Key to our success is the end-to-end alignment of our 3 element Yagis 73 Frank W3LPL - Original Message - From: "Jim Brown" To: elecraft@mailman.qth.net Sent: Wednesday, June 24, 2020 12:49:00 AM Subject: Re: [Elecraft] K4 Question On 6/23/2020 3:27 PM, d

[Elecraft] New Heil HM10 XD Microphone - Poor Design?

All: I purchased the new Heil HM-10 dual element microphone thinking it would perform as well as my old HM-10 which has the HC4 and HC5 mic elements. Unfortunately, that's not the case and reason seems to be the way the new mic was designed. The mic elements are at a 45 degree angle and plac

Re: [Elecraft] K4 Issue

West Valley Amateur Radio Association has had similar results running category nAB for large n (10-15). We run 5 watts and use K3, K3S, KX3 and Flex radios. We take care in our antenna setup to put the antennas in each other's null area. When we have problems, it is due to batteries running do

Re: [Elecraft] K4 Issue

On 6/23/2020 5:49 PM, K8TE wrote: I experienced similar issues with my K3 and an IC-7600 several years ago at a different FD site. A contester neighbor ran an IC7600 into a legal limit amp. 15 miles away, he chewed up almost 20 kHz of whatever band he was on running CW, and he was always runn

Re: [Elecraft] K4 Question

I should have mentioned that with 30 dB simulated path loss and 10 W TX, the received signal at each end is the equivalent of about +10 dBm, or "S9+83 dB". FWIW :) 73, Wayne N6KR > On Jun 23, 2020, at 8:16 PM, Wayne Burdick wrote: > > Hi Eric, > > I did a quick test using my home lab to sim

Re: [Elecraft] K4 Question

Hi Eric, I did a quick test using my home lab to simulate a possible FD scenario. For this test I set up a K4D and a K3S with their antenna jacks connected directly together through a high-power attenuator. Receiver preamps were off. With this arrangement, the RX noise floor is minimized since

Re: [Elecraft] KAT500 Remote software and KPA500 remote software

A bit more information about how things work in the KPA500. The boot loader runs on back-panel power-on or when the amplifier is powered off from the front panel (or by command). It runs in power-down state, sleeping the processor as much as possible. It looks for inputs from the front panel pow

Re: [Elecraft] KAT500 Remote software and KPA500 remote software

I use VA2FSQ's Win4K3Suite, and it can control a KPA500/KPA1500, including turning it on and off. https://va2fsq.com/ Jim N7US -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Jack Brindle via Elecraft Sent: Tuesday, June 23, 2020 21:13 To: l...@lnainc.com Cc: el

Re: [Elecraft] KAT500 Remote software and KPA500 remote software

Let's see if we can determine why you are seeing this behavior. What platform are you using (Window, Mac, Linux), and exactly what is the scenario and conditions you are seeing? In other words, please provide more info. I believe K6KR has provided a bit of additional info. He wrote the KPA Utili

Re: [Elecraft] K4 Question

Once any FT8 passband is digitized, filtered, and decimated in a K4, there should be no need to ever apply AGC - just pass the bits over to WSJT. The decimated bit stream may exceed 16 bits, so the WSJT input processor would have to be modified to accept the additional dynamic range. On Tuesd

Re: [Elecraft] K4 Question

On 24/6/20 11:02 am, Jim Brown wrote: On 6/23/2020 4:53 PM, Adrian wrote: An excessive strength FT8 signal is easy to remove with notch. Yes, BUT -- the notch introduces phase shift, which can degrade decoding.  K1JT recommends running the IF wide and letting WSJT-X separate signals. Ok on

Re: [Elecraft] K4 Question

On 6/23/2020 4:53 PM, Adrian wrote: An excessive strength FT8 signal is easy to remove with notch. Yes, BUT -- the notch introduces phase shift, which can degrade decoding. K1JT recommends running the IF wide and letting WSJT-X separate signals. I DO strongly differ with the advice in the

Re: [Elecraft] K4 Issue

I have a neighbor who lives about 500 ft away with a new IC-7300. I have told many people the IC-7300 is an interesting radio for $900-1,000, but it ain't no K3! For example, several years ago we had three K3 transceivers on 20m--CW, SSB, and GOTA. They were about 500 feet apart from each other.

Re: [Elecraft] K4 Question

On 6/23/2020 3:27 PM, donov...@starpower.net wrote: We use more than a dozen K3 transceivers at the W3AO Field Day with as many as four operating in the same band (CW, SSB, FT8 and GOTA SSB), but not this year... What power level, Frank? 73, Jim K9YC ___

Re: [Elecraft] KAT500 Remote software and KPA500 remote software

Lyn, You can try restarting the utility; sometimes if you push the front buttons (power on/off, standby), the app gets out of sync for the KPA500. 73, Rick NK7I On 6/23/2020 4:50 PM, Lyn Norstad wrote: Nope. "Should be" is not how it works. I have discussed this with Support, and it would

Re: [Elecraft] K4 Question

An excessive strength FT8 signal is easy to remove with notch. On 24/6/20 7:32 am, Eric Norris wrote: My foaming at the mouth over the K4 has been tempered by it having less adjacent channel rejection than the K3 due to the different architecture--at least until the K4HD comes out. I understan

Re: [Elecraft] KAT500 Remote software and KPA500 remote software

Nope. "Should be" is not how it works. I have discussed this with Support, and it would require constant polling ... which they cannot do. Once you turn it OFF with the front panel switch, it needs to be turned on the same way. After that, yes the utility is fully functional. 73 Lyn, W0LEN

Re: [Elecraft] K2 after kat2 install Q7 & 8 check

Russ, At first glance it would appear that you have shorted PA transistors (at least one of them) To address the problem, the first thing is to order the K2PAKIT from Elecraft. It contains matched PA transistors, new PA transistor mounting hardware if you have the older white standoffs, rep

[Elecraft] Stainless hardware

I've bought a lot from McMaster with never a problem. A defense manufacturer I used to work for also used them on occasion with no issues. If I need one or two real quick, the local hardware stores have a decent supply from a regional distributor that seems to be good stuff. The best general use

[Elecraft] Elecraft] New Elecraft K4 has great Rx Audio on CW pileups,

Bob, Thanks for that recording but would you mind recording another pileup off the front headphone plug so we can see how a K4 really sounds without the MK2R’s weaknesses masking the K4? I finally had to throw my MK2R away because I never could get rid of the thumps. 😉 Thanks, Bob K5

Re: [Elecraft] K4 Question

Hi Eric, S9+65 dB is about -8 dBm. Off the top of my head, this is far, far below what a basic K4 or K4D can handle, artifact-free, in-band, without the need for attenuation or additional filtering. When I get back to the lab I'm going to set up exactly this condition and get back to you. Of c

Re: [Elecraft] K4 Question

Hi Eric, We use more than a dozen K3 transceivers at the W3AO Field Day with as many as four operating in the same band (CW, SSB, FT8 and GOTA SSB), but not this year... (: There's absolutely no trace of interference between four K3 transceivers operating in the same band, despite the ante

[Elecraft] K2 after kat2 install Q7 & 8 check

When I check, both show no resistance reading. Shorted probes read -1`or zero. I am reading from both the holding bolt and a 2D block to the collector. The kat2 instructions say to look for greater the 100 ohms and the k2 manual says to check for a short for proper installation. Infinite resi

Re: [Elecraft] KAT500 Remote software and KPA500 remote software

Take another look. You should be able to power on/off the KPA500 using the front power button as well as through the KPA Utility. The Utility does a great job of detecting the KPA500’s current data rate whether it is on or off (the two rates may be different) and will communicate at the proper r

[Elecraft] K4 Question

My foaming at the mouth over the K4 has been tempered by it having less adjacent channel rejection than the K3 due to the different architecture--at least until the K4HD comes out. I understand this, and the reasons why. Thanks for your answers I know I have asked this question before, but I wan

Re: [Elecraft] KAT500 Remote software and KPA500 remote software

I meant to follow up on this sooner, but … so here’s what I found with the KPA500 and KPA Utility Rev 1.13.7.16. First, the KPA500 rear power switch must, of course, remain in the ON position at all times. Once the KPA500 has been powered on with the Front panel switch (and communications i

Re: [Elecraft] New Elecraft K4 has great Rx Audio on CW pileups, no more mush

I think the point of the recording was to illustrate receiver recover between elements while sending high speed cw.  I would like to know how much better is k4 than k3, which would mean hearing more between elements of cw at high speed; a better recording is needed or one has to operate the radi

Re: [Elecraft] New Elecraft K4 has great Rx Audio on CW pileups, no more mush

Oops, sorry, I listened to the recording before reading the message! Double oops. Me, too! Barry W2UP -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elec

Re: [Elecraft] New Elecraft K4 has great Rx Audio on CW pileups, no more mush

Paul, The K4's DSP smoothly ramps audio up/down during muting. There's no "clamp." The artifacts in the recording are not coming from the K4; they're probably due to RFI getting into the external recording device's cables, as Bob mentioned in his posting. Wayne > On Jun 23, 2020, at 9:11 AM

Re: [Elecraft] New Elecraft K4 has great Rx Audio on CW pileups, no more mush

Just sounds like the audio muting during key-down. The K4 speaker probably rolls off below 300Hz while your recording has higher fidelity. External audio devices would have to roll off the low frequency to avoid it. I bet if the K4 used a VCA rather than a simple clamp you probably would not hear t

[Elecraft] OT Fasteners & Connectors - Conclusion

Thank you everybody for taking the time to respond. I’m trying two sources gleaned from the thread: www.albanycountyfasteners.com https://www.mcmaster.com/ I’m going to try both and see if I can’t get a little more longevity o

Re: [Elecraft] New Elecraft K4 has great Rx Audio on CW pileups, no more mush

Oops, sorry, I listened to the recording before reading the message! 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 23/06/2020 16:23, Victor Rosenthal 4X6GP wrote: I certainly hope the clicking I hear on the sidetone is an artifact of the recording proc

Re: [Elecraft] New Elecraft K4 has great Rx Audio on CW pileups, no more mush

I certainly hope the clicking I hear on the sidetone is an artifact of the recording process, or something that will go away with the production version of the K4! 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ . On 23/06/2020 12:41, Bob Wilson, N6TV wro

Re: [Elecraft] New Elecraft K4 has great Rx Audio on CW pileups, no more mush

Listening to the recording, I find the thumping during xmit very annoying. Barry W2UP -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mail

[Elecraft] Re K4D real world user testing

There's the news everyone has been waiting for. And may help K9TF keep from over medicating in the future :-) K4D's in the hands of at least 2 very capable contesters. They must be ready to start the production line as soon as Cali's lockdown law expires. And great news about the APF filter, I h

[Elecraft] New Elecraft K4 has great Rx Audio on CW pileups, no more mush

Summary: The K4D Receiver Audio and QSK performance seems outstanding -- I'm sold. I hesitated to order a K4 until I could hear how one sounded in "real world" pileup conditions, compared to my trusty 11-year old K3s (S/N 1494 and 1495 with KSYN3A upgrades). Well, here is a short recording I mad