Re: [Elecraft] P3 Goodness and questions
On 2/20/2020 11:52 AM, Bill Frantz wrote: I built a special clamp that goes over the top of my K3 and keeps the P3 on top from sliding backwards out of aluminum bar. Tightening the screws on the both ends clamp it to the K3 so it doesn't slide. Yes. My K3s are tilted with the standard bale, and I've used velcro tabs applied to the top of the K3s and the P3 feet. Not elegant, but it works fine. 73, Jim 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] A question about HDSDR controlling SDR & K3 at same time
Interesting! Yes I can see how that would be. Thanks Bob On Thu, Feb 20, 2020, at 5:04 PM, Bob McGraw K4TAX wrote: > Depending on the stability of the oscillator in the SDR, the numbers you > have now may be good, or may change. I have an early RSP1a and it > moves around a good bit. I don't rely on it for any degree of > accuracy. I think it is more temperature related than anything. > > 73 > > Bob, K4TAX > > > On 2/20/2020 3:59 PM, bw...@fastmail.fm wrote: > > Thank you Bob! > > Yes I see it - its the "RF Front End + Calibration dialog box". > > And the "LO Freq Cal" > > > > I've got it setup correctly now > > Thanks! > > Duane > > > > On Thu, Feb 20, 2020, at 4:26 PM, Bob McGraw K4TAX wrote: > >> You will need to correct the frequency errors using HDSDR calibration > >> mode. There is a setting for each mode. It is in the Setup menu under > >> input calibration. > >> > >> Bob, K4TAX > >> > >> > >> Sent from my iPhone > >> > >>> On Feb 20, 2020, at 3:26 PM, bw...@fastmail.fm wrote: > >>> > >>> So last week with your help I got HDSDR setup to control both a > >>> RFSPACE-IQ (for panadapter) and the K3 at the same time. > >>> > >>> There is one behavior I haven't been able to figure out. > >>> > >>> I have HDSDR and the K3 both setup to output a CW sidetone at 600hz. > >>> > >>> In CW mode - HDSDR displays a close-up of a given signal on the > >>> lower-right. > >>> And at dead-center its spot on - and producing the 600z tone. > >>> But its then not quite spot on - on the K3 > >>> > >>> I've tried offsetting the side-tone frequency on HDSDR - thinking I just > >>> needed to shift it so that when the K3 is spot on - the signal will show > >>> up in dead center on the HDSDR signal window. > >>> > >>> But that doesn't seem to work. It still retains the exact same frequency > >>> offset between HDSDR and the K3 > >>> > >>> Has anyone seen this? > >>> And can suggest a fix? > >>> > >>> Thanks > >>> Duane > >>> > >>> __ > >>> 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 > >>> Message delivered to rmcg...@blomand.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 Goodness and questions
Hi Jerry, I found on the Elecraft site under P3 mods, 3 mods 1 Mod to early K3's not K3S Buffer gain 2 Holder clip for the P3 ribbon cable 3 How to assemble PowerPoles Ask Elecraft parts about the screwI agree Nifty Accessories has good "cheat" sheets 73Jim Hk7sss In a message dated 2/20/2020 7:06:15 AM Pacific Standard Time, ae...@carolinaheli.com writes: I recently obtained a P3 and I'm and exceedingly happy! Now that I own it Ifeel bad that I wasted a few years trying other solutions that introducednoise and undue complexity into my station. Just a few notes and questions because the manual is helpful but I don'tfully understand what I'm reading yet. 3. What serial number requires the mod? My serial is 32514. I need a serial port screw stud - can I buy that from Elecraft whenI purchase a cable + vga card?5. Is there a quick setup cheat-sheet anyone has for the P3? Thanks in advance Jerry Moore AE4PB __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 Goodness and questions
I have used a rubberized mat material designed for lining kitchen shelves to keep keyer paddles in place. That may work for a P3 as well. Something like “gorilla grip”. There are a number of choices. 73 de Dick, K6KR > On Feb 20, 2020, at 09:02, ae...@carolinaheli.com wrote: > > I recently obtained a P3 and I'm and exceedingly happy! Now that I own it I > feel bad that I wasted a few years trying other solutions that introduced > noise and undue complexity into my station. > > Just a few notes and questions because the manual is helpful but I don't > fully understand what I'm reading yet. > > > > 1.When using QSY the P3 unit often slides. How do most of you prevent > the unit from sliding? > 2.The signal/noise floor jumps a lot and I'm not sure if that's due to > local interference or something in my setup. Based on reading I likely need > to noise troubleshoot/filter my station. I don't see an AGC setting for the > P3. Any suggestions? > 3.What serial number requires the mod? My serial is 3251 > 4.I need a serial port screw stud - can I buy that from Elecraft when > I purchase a cable + vga card? > 5.Is there a quick setup cheat-sheet anyone has for the P3? > > > > Thanks in advance > > > > > > Jerry Moore > > AE4PB > > > > __ > 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 > Message delivered to d...@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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] A question about HDSDR controlling SDR & K3 at same time
Depending on the stability of the oscillator in the SDR, the numbers you have now may be good, or may change. I have an early RSP1a and it moves around a good bit. I don't rely on it for any degree of accuracy. I think it is more temperature related than anything. 73 Bob, K4TAX On 2/20/2020 3:59 PM, bw...@fastmail.fm wrote: Thank you Bob! Yes I see it - its the "RF Front End + Calibration dialog box". And the "LO Freq Cal" I've got it setup correctly now Thanks! Duane On Thu, Feb 20, 2020, at 4:26 PM, Bob McGraw K4TAX wrote: You will need to correct the frequency errors using HDSDR calibration mode. There is a setting for each mode. It is in the Setup menu under input calibration. Bob, K4TAX Sent from my iPhone On Feb 20, 2020, at 3:26 PM, bw...@fastmail.fm wrote: So last week with your help I got HDSDR setup to control both a RFSPACE-IQ (for panadapter) and the K3 at the same time. There is one behavior I haven't been able to figure out. I have HDSDR and the K3 both setup to output a CW sidetone at 600hz. In CW mode - HDSDR displays a close-up of a given signal on the lower-right. And at dead-center its spot on - and producing the 600z tone. But its then not quite spot on - on the K3 I've tried offsetting the side-tone frequency on HDSDR - thinking I just needed to shift it so that when the K3 is spot on - the signal will show up in dead center on the HDSDR signal window. But that doesn't seem to work. It still retains the exact same frequency offset between HDSDR and the K3 Has anyone seen this? And can suggest a fix? Thanks Duane __ 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 Message delivered to rmcg...@blomand.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] A question about HDSDR controlling SDR & K3 at same time
Thank you Bob! Yes I see it - its the "RF Front End + Calibration dialog box". And the "LO Freq Cal" I've got it setup correctly now Thanks! Duane On Thu, Feb 20, 2020, at 4:26 PM, Bob McGraw K4TAX wrote: > You will need to correct the frequency errors using HDSDR calibration > mode. There is a setting for each mode. It is in the Setup menu under > input calibration. > > Bob, K4TAX > > > Sent from my iPhone > > > On Feb 20, 2020, at 3:26 PM, bw...@fastmail.fm wrote: > > > > So last week with your help I got HDSDR setup to control both a RFSPACE-IQ > > (for panadapter) and the K3 at the same time. > > > > There is one behavior I haven't been able to figure out. > > > > I have HDSDR and the K3 both setup to output a CW sidetone at 600hz. > > > > In CW mode - HDSDR displays a close-up of a given signal on the lower-right. > > And at dead-center its spot on - and producing the 600z tone. > > But its then not quite spot on - on the K3 > > > > I've tried offsetting the side-tone frequency on HDSDR - thinking I just > > needed to shift it so that when the K3 is spot on - the signal will show up > > in dead center on the HDSDR signal window. > > > > But that doesn't seem to work. It still retains the exact same frequency > > offset between HDSDR and the K3 > > > > Has anyone seen this? > > And can suggest a fix? > > > > Thanks > > Duane > > > > __ > > 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 > > Message delivered to rmcg...@blomand.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] A question about HDSDR controlling SDR & K3 at same time
You will need to correct the frequency errors using HDSDR calibration mode. There is a setting for each mode. It is in the Setup menu under input calibration. Bob, K4TAX Sent from my iPhone > On Feb 20, 2020, at 3:26 PM, bw...@fastmail.fm wrote: > > So last week with your help I got HDSDR setup to control both a RFSPACE-IQ > (for panadapter) and the K3 at the same time. > > There is one behavior I haven't been able to figure out. > > I have HDSDR and the K3 both setup to output a CW sidetone at 600hz. > > In CW mode - HDSDR displays a close-up of a given signal on the lower-right. > And at dead-center its spot on - and producing the 600z tone. > But its then not quite spot on - on the K3 > > I've tried offsetting the side-tone frequency on HDSDR - thinking I just > needed to shift it so that when the K3 is spot on - the signal will show up > in dead center on the HDSDR signal window. > > But that doesn't seem to work. It still retains the exact same frequency > offset between HDSDR and the K3 > > Has anyone seen this? > And can suggest a fix? > > Thanks > Duane > > __ > 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 > Message delivered to rmcg...@blomand.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 Message delivered to arch...@mail-archive.com
[Elecraft] A question about HDSDR controlling SDR & K3 at same time
So last week with your help I got HDSDR setup to control both a RFSPACE-IQ (for panadapter) and the K3 at the same time. There is one behavior I haven't been able to figure out. I have HDSDR and the K3 both setup to output a CW sidetone at 600hz. In CW mode - HDSDR displays a close-up of a given signal on the lower-right. And at dead-center its spot on - and producing the 600z tone. But its then not quite spot on - on the K3 I've tried offsetting the side-tone frequency on HDSDR - thinking I just needed to shift it so that when the K3 is spot on - the signal will show up in dead center on the HDSDR signal window. But that doesn't seem to work. It still retains the exact same frequency offset between HDSDR and the K3 Has anyone seen this? And can suggest a fix? Thanks Duane __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] Setting up the KX3 Pre-Amp for FT8/JS8Call when receiving ?
$.02: I am fighting my own urban QRM issues. For me, 20dB was Too Much, 10dB seems to work. Haven't recently tried less. I do have to make sure to turn RF Gain down enough that I can use the AF Vol to keep the input in the expected range of my laptop/wsjtx Good luck! Scott AD6YT On Thu, Feb 20, 2020 at 9:24 AM John Newgas wrote: > > Setting up the KX3 Pre-Amp for FT8/JS8Call when receiving ? > I use my KX3 mainly for JS8Call and FT8 on 20 and 40m.Because I live in > London, I have a poor antenna and quite a lot of QRM around me. > > I had thought that my KX3 might be a bit deaf on receive as my 10W signal can > be heard by many stations which I can’t hear. Before making and erecting a > new antenna, I thought I would re-check all the settings I use … Attenuator > OFF, RF Gain set to 0 etc. > > I then started to think about the receive pre-amp which is normally OFF. > Setting ti to 10 db Gain and turning it on, did seem to improve things. > > I was wondering how with Digimodes to work out the best level for Pre-Amp > gain. The traditional "listening for signals in noise" doesn’t really work > as the detection levels are below hearing. Any good suggestions for setting > this optimally when you have a short and poor antenna ? > > John G7LTQ > __ > 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 > Message delivered to scott.sm...@gmail.com -- Scott Small __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 Goodness and questions
Many years ago I took a piece of oak the same length as the combined width of my K3 and P3.About 1" thick by 3" wide.On the 3" face I created a groove running the entire length set back about an inch from one edge.The dimensions of the groove are such that the rubber feet on the bails on the radio and P3 are a snug fit.I added some self adhesive feet to the bottom of the wood piece.Keeps the K3 and P3 in perfect alignment with each other.I rounded the edges and finished the wood with polyurethane. Looks really nice and I could probably make another in less time than it took me to write this email.73,Gary K9GS Original message From: Bill Frantz Date: 2/20/20 1:52 PM (GMT-06:00) To: ae...@carolinaheli.com Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] P3 Goodness and questions On 2/20/20 at 10:00 AM, ae...@carolinaheli.com wrote:>1. When using QSY the P3 unit often slides. How do most of you prevent>the unit from sliding?I built a special clamp that goes over the top of my K3 and keeps the P3 on top from sliding backwards out of aluminum bar. Tightening the screws on the both ends clamp it to the K3 so it doesn't slide. It also comes off easily for getting into the K3 and doesn't mar the K3 case.73 Bill AE6JV---Bill Frantz | Ham radio contesting is a | Periwinkle(408)348-7900 | contact sport. | 150 Rivermead Rd #235www.pwpconsult.com | --Ken Widelitz K6LA/VY2TT | Peterborough, NH 03458__Elecraft mailing listHome: http://mailman.qth.net/mailman/listinfo/elecraftHelp: http://mailman.qth.net/mmfaq.htmPost: mailto:elecr...@mailman.qth.netThis list hosted by: http://www.qsl.netPlease help support this email list: http://www.qsl.net/donate.htmlMessage delivered to k...@gjschwartz.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 Goodness and questions
My P3 sits beside my K3S and both use the elevation bail to raise the front of the radio and P3 along with my KPA500. I don’t find that any of the 3 pieces move when operating. Bob, K4TAX Sent from my iPhone > On Feb 20, 2020, at 2:06 PM, Bill Frantz wrote: > > On 2/20/20 at 10:00 AM, ae...@carolinaheli.com wrote: > >> 1.When using QSY the P3 unit often slides. How do most of you prevent >> the unit from sliding? > > I built a special clamp that goes over the top of my K3 and keeps the P3 on > top from sliding backwards out of aluminum bar. Tightening the screws on the > both ends clamp it to the K3 so it doesn't slide. It also comes off easily > for getting into the K3 and doesn't mar the K3 case. > > 73 Bill AE6JV > > --- > Bill Frantz| Ham radio contesting is a | Periwinkle > (408)348-7900 | contact sport.| 150 Rivermead Rd #235 > www.pwpconsult.com | --Ken Widelitz K6LA/VY2TT | Peterborough, NH 03458 > > __ > 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 > Message delivered to rmcg...@blomand.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] RFI issues
I still love the coffee maker and would buy it again. I just turn it off after the pot or pod is brewed. Chuck Jack Hawley KE9UW Sent from my iPhone, cjack > On Feb 20, 2020, at 12:12 PM, W8JH wrote: > > ke9uw wrote >> We bought a new Keurig coffee maker which does a pot or also the pods. It >> puts a huge noise out to the ham frequencies. Have to turn it off to get >> on 80M > > That is a serious conflict! > > 80m morning greyline without caffeine, people cannot live this way!! > > > > > - > 73, > > Joe, W8JH > > K3s, KPA 500, KAT 500 and KX3 happy user. > -- > Sent from: http://elecraft.365791.n2.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 > Message delivered to c-haw...@illinois.edu __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 Goodness and questions
On 2/20/20 at 10:00 AM, ae...@carolinaheli.com wrote: 1.When using QSY the P3 unit often slides. How do most of you prevent the unit from sliding? I built a special clamp that goes over the top of my K3 and keeps the P3 on top from sliding backwards out of aluminum bar. Tightening the screws on the both ends clamp it to the K3 so it doesn't slide. It also comes off easily for getting into the K3 and doesn't mar the K3 case. 73 Bill AE6JV --- Bill Frantz| Ham radio contesting is a | Periwinkle (408)348-7900 | contact sport.| 150 Rivermead Rd #235 www.pwpconsult.com | --Ken Widelitz K6LA/VY2TT | Peterborough, NH 03458 __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] RFI issues
On 2/20/2020 10:22 AM, Victor Rosenthal 4X6GP wrote: Not so fast. The K3's T/R switch can be overwhelmed by very strong signals. The result is intermod junk all over the bands. This happened to me with a 50 kW AM BC signal at about 1000 kHz that is line-of-sight to my antenna. I don't see why a super-strong VHF signal couldn't have the same effect. AM BC signals are far more likely to cause issues because 1) they are much closer in frequency (as a percentage) than VHF/UHF, so 2) our antennas tend to be far less efficient receiving them, and 3) feedline loss is high at VHF/UHF, due both to normal increase in loss with frequency and because the feedline is poorly matched to the RX at VHF/UHF. Also, AM BC transmitters often combine in non-linear junctions to produce IMD that ON_FREQUENCY in our bands. I first experienced this more than 60 years ago, when local 5kW stations on 930 kHz and 1470 kHz put a monster product on 3870 kHz, wiping out the WV AM net on 3890. The IM often occurs in the TX output stage; because FM and TV TX antennas are often in close proximity to other BC and 2-way TX sites, it is common for these TX to include a device called a "circulator" that prevents signal from another TX to backfeed into their own output stage, where rectification can occur, but it is far less common for AM stations to include comparable networks. In addition, of course, rectification can occur almost anywhere. 73, Jim 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] RFI issues
We gave our plasma TV to our parish and I bought my wife a new LED TV so she could watch her programs and I could operate HF without the horrible noise from the plasma TV! 73, Bill, K8TE I still have a neighbor with a noisy plasma TV -- Sent from: http://elecraft.365791.n2.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] RFI issues
Not so fast. The K3's T/R switch can be overwhelmed by very strong signals. The result is intermod junk all over the bands. This happened to me with a 50 kW AM BC signal at about 1000 kHz that is line-of-sight to my antenna. I don't see why a super-strong VHF signal couldn't have the same effect. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco/ On 20-Feb-2020 20:10, Fred Jensen wrote: Andreas: The probability that your noise is due to the TV or FM station is extremely low [like really zero]. Meadow Lakes CA is the "TV/FM capital" for the southern Central Valley [Fresno], and my 2m HT goes full bars about 2 miles from the complex on both FM and AM [aeronautical band]. When at the repeater site next to a 300 KW digital TV station, my comrade's HT won't break my squelch. It is just front end overload from way out of band, there is no discernible noise. The number of noise makers we normally see in urban/suburban areas is almost countably infinite. In addition to the 24/7 constant hash from SMPS, I have a variety of intermittant noise sources that come and go with periods ranging from a few seconds [probably the A/C motor starting at the gym behind us] to an hour or so. One is a sequence of synchronized carriers on the waterfall about 7 kHz apart that last for a few seconds and then burst into roman candles that fog up the WF and then fade in 2 or 3 seconds. Neighbor 4 doors down the street just installed rooftop solar which I can now see on the P3 on 160 and 80. [:=( K9YC's RFI notes pretty much cover searching for and fixing RFI. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] RFI issues
It's really important to make sure you're listening to the right source. One way to do that is to listen to the audio from your home receiver (AM mode, AGC off, RF gain backed down to avoid overload) while you are searching. There will be a pattern of fluctuations. When they match, you have the right source. You can relay the home receiver by phone, VHF/UHF, etc. 73, Scott K9MA On 2/20/2020 11:48, Phil Hystad via Elecraft wrote: I once had a noise issue and I used my KX3 roving about the neighborhood to find it. Actually, I found a number of loud noise sources doing that as I moved around. It seems that if the noise level is fairly constant as you move around the area but will within the same general distance from the TV/FM station antennas you could isolate the source as those antennas or something else. 73, phil, K7PEH On Feb 20, 2020, at 9:42 AM, Jim Brown wrote: On 2/18/2020 4:38 PM, Andreas Wachter via Elecraft wrote: Yes, I did run the K3 off of a battery and pulled the main AC breaker. Didn’t make any difference. Thus my suspicion that the RFI is related to the 208 kW ERP TV station (and/or 63 kW EPR FM station) which are within 1.6 miles and in direct line of sight. Do you have neighbors? Did you pull their breakers at the same time? Do you have a UPS? They continue to run without power, so both they and any connected equipment can create noise. Did you take the time to study the link I posted? 73, Jim K9YC __ -- Scott K9MA k...@sdellington.us __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] RFI issues
ke9uw wrote > We bought a new Keurig coffee maker which does a pot or also the pods. It > puts a huge noise out to the ham frequencies. Have to turn it off to get > on 80M That is a serious conflict! 80m morning greyline without caffeine, people cannot live this way!! - 73, Joe, W8JH K3s, KPA 500, KAT 500 and KX3 happy user. -- Sent from: http://elecraft.365791.n2.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] RFI issues
Andreas: The probability that your noise is due to the TV or FM station is extremely low [like really zero]. Meadow Lakes CA is the "TV/FM capital" for the southern Central Valley [Fresno], and my 2m HT goes full bars about 2 miles from the complex on both FM and AM [aeronautical band]. When at the repeater site next to a 300 KW digital TV station, my comrade's HT won't break my squelch. It is just front end overload from way out of band, there is no discernible noise. The number of noise makers we normally see in urban/suburban areas is almost countably infinite. In addition to the 24/7 constant hash from SMPS, I have a variety of intermittant noise sources that come and go with periods ranging from a few seconds [probably the A/C motor starting at the gym behind us] to an hour or so. One is a sequence of synchronized carriers on the waterfall about 7 kHz apart that last for a few seconds and then burst into roman candles that fog up the WF and then fade in 2 or 3 seconds. Neighbor 4 doors down the street just installed rooftop solar which I can now see on the P3 on 160 and 80. [:=( K9YC's RFI notes pretty much cover searching for and fixing RFI. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 2/20/2020 9:42 AM, Jim Brown wrote: On 2/18/2020 4:38 PM, Andreas Wachter via Elecraft wrote: Yes, I did run the K3 off of a battery and pulled the main AC breaker. Didn’t make any difference. Thus my suspicion that the RFI is related to the 208 kW ERP TV station (and/or 63 kW EPR FM station) which are within 1.6 miles and in direct line of sight. Do you have neighbors? Did you pull their breakers at the same time? Do you have a UPS? They continue to run without power, so both they and any connected equipment can create noise. Did you take the time to study the link I posted? 73, Jim 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] RFI issues
I once had a noise issue and I used my KX3 roving about the neighborhood to find it. Actually, I found a number of loud noise sources doing that as I moved around. It seems that if the noise level is fairly constant as you move around the area but will within the same general distance from the TV/FM station antennas you could isolate the source as those antennas or something else. 73, phil, K7PEH > On Feb 20, 2020, at 9:42 AM, Jim Brown wrote: > > On 2/18/2020 4:38 PM, Andreas Wachter via Elecraft wrote: >> Yes, I did run the K3 off of a battery and pulled the main AC breaker. >> Didn’t make any difference. Thus my suspicion that the RFI is related to the >> 208 kW ERP TV station (and/or 63 kW EPR FM station) which are within 1.6 >> miles and in direct line of sight. > > Do you have neighbors? Did you pull their breakers at the same time? > > Do you have a UPS? They continue to run without power, so both they and any > connected equipment can create noise. > > Did you take the time to study the link I posted? > > 73, Jim 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 > Message delivered to phys...@mac.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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] RFI issues
On 2/18/2020 4:38 PM, Andreas Wachter via Elecraft wrote: Yes, I did run the K3 off of a battery and pulled the main AC breaker. Didn’t make any difference. Thus my suspicion that the RFI is related to the 208 kW ERP TV station (and/or 63 kW EPR FM station) which are within 1.6 miles and in direct line of sight. Do you have neighbors? Did you pull their breakers at the same time? Do you have a UPS? They continue to run without power, so both they and any connected equipment can create noise. Did you take the time to study the link I posted? 73, Jim 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 Goodness and questions
**K6DGW comments interspersed: 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 2/20/2020 7:00 AM, ae...@carolinaheli.com wrote: I recently obtained a P3 and I'm and exceedingly happy! Now that I own it I feel bad that I wasted a few years trying other solutions that introduced noise and undue complexity into my station. Just a few notes and questions because the manual is helpful but I don't fully understand what I'm reading yet. 1. When using QSY the P3 unit often slides. How do most of you prevent the unit from sliding? **Double-sided sticky tape on the rubber feet 2. The signal/noise floor jumps a lot and I'm not sure if that's due to local interference or something in my setup. Based on reading I likely need to noise troubleshoot/filter my station. I don't see an AGC setting for the P3. Any suggestions? **The baseline will move around due to changing ambient noise levels. I run the averaging at max for the spectrum display which makes the signals stand out better and reduces the "jumpiness", averaging on waterfall is at minimum 3. What serial number requires the mod? My serial is 3251 **Don't know. I've had mine for 7 or so years and never put any mods in. 4. I need a serial port screw stud - can I buy that from Elecraft when I purchase a cable + vga card? **Maybe, but I'd think they'd not stock parts of parts. You can just buy a connector and take the stud off. 5. Is there a quick setup cheat-sheet anyone has for the P3? **FN1: Span 4; FN2: Span 50; FN3: Span 200; FN4: Peak **FN5: Span 20; FN6: Span 100; FN7: Span 25; FN8: Freeze **Spectrum avg: Max **Waterfall avg: Min **Waterfall disp: Monochrome **Display: Fixed Tune **I use the monochrome waterfall primarily because I have no color vision, however guest ops have noted that you can see weaker signals on it. YMMV __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] Setting up the KX3 Pre-Amp for FT8/JS8Call when receiving ?
Setting up the KX3 Pre-Amp for FT8/JS8Call when receiving ? I use my KX3 mainly for JS8Call and FT8 on 20 and 40m.Because I live in London, I have a poor antenna and quite a lot of QRM around me. I had thought that my KX3 might be a bit deaf on receive as my 10W signal can be heard by many stations which I can’t hear. Before making and erecting a new antenna, I thought I would re-check all the settings I use … Attenuator OFF, RF Gain set to 0 etc. I then started to think about the receive pre-amp which is normally OFF. Setting ti to 10 db Gain and turning it on, did seem to improve things. I was wondering how with Digimodes to work out the best level for Pre-Amp gain. The traditional "listening for signals in noise" doesn’t really work as the detection levels are below hearing. Any good suggestions for setting this optimally when you have a short and poor antenna ? John G7LTQ __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] P3 Goodness and questions
Jerry, As to your last question, there is a Nifty Manual available. Most Ham stores have them or you can go to niftyaccessories.com. 73, Jim Jim Finan AB4AC Sent from my BlackBerry - the most secure mobile device Original Message From: ae...@carolinaheli.com Sent: February 20, 2020 10:01 AM To: elecraft@mailman.qth.net Subject: [Elecraft] P3 Goodness and questions I recently obtained a P3 and I'm and exceedingly happy! Now that I own it I feel bad that I wasted a few years trying other solutions that introduced noise and undue complexity into my station. Just a few notes and questions because the manual is helpful but I don't fully understand what I'm reading yet. 1. When using QSY the P3 unit often slides. How do most of you prevent the unit from sliding? 2. The signal/noise floor jumps a lot and I'm not sure if that's due to local interference or something in my setup. Based on reading I likely need to noise troubleshoot/filter my station. I don't see an AGC setting for the P3. Any suggestions? 3. What serial number requires the mod? My serial is 3251 4. I need a serial port screw stud - can I buy that from Elecraft when I purchase a cable + vga card? 5. Is there a quick setup cheat-sheet anyone has for the P3? Thanks in advance Jerry Moore AE4PB __ 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 Message delivered to jimfi...@att.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 Message delivered to arch...@mail-archive.com
[Elecraft] WTB: KAT500 tuner
Howdy Gang. Considering buying a KAT500 auto tuner. Anybody have one for sale? Many thanks. 73, Joe W2KJ KX2/KX3/KXPA100 __ 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 Message delivered to arch...@mail-archive.com
[Elecraft] P3 Goodness and questions
I recently obtained a P3 and I'm and exceedingly happy! Now that I own it I feel bad that I wasted a few years trying other solutions that introduced noise and undue complexity into my station. Just a few notes and questions because the manual is helpful but I don't fully understand what I'm reading yet. 1. When using QSY the P3 unit often slides. How do most of you prevent the unit from sliding? 2. The signal/noise floor jumps a lot and I'm not sure if that's due to local interference or something in my setup. Based on reading I likely need to noise troubleshoot/filter my station. I don't see an AGC setting for the P3. Any suggestions? 3. What serial number requires the mod? My serial is 3251 4. I need a serial port screw stud - can I buy that from Elecraft when I purchase a cable + vga card? 5. Is there a quick setup cheat-sheet anyone has for the P3? Thanks in advance Jerry Moore AE4PB __ 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 Message delivered to arch...@mail-archive.com
Re: [Elecraft] KPA1500
Sounds like an issue with the power detection circuit on the filter board. I had the 3 watt resistor unsolder itself from the board (it is mounted upside down so gravity helped). I had all kinds of weird power reading issues that were impossible for the input power and current draw. I suggest calling Elecraft before doing anything else as you can cause more damage continuing the transmit. Elecraft was excellent in diagnosing my problem and sent me the necessary parts to repair it in the field (I did work in electronics, so familiar with surface mount work) Dave wo2x -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Rick Bates, NK7I Sent: Thursday, February 20, 2020 2:23 AM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] KPA1500 Presuming that is a known 'good' dummy load for that power level, have you run the output calibration of the driver radio (K3/S also presumed) as a starting point? If that has been done (successfully, multiple times), check to make SURE that the radio (driver) antenna tuner is BYPASSED (not presenting an odd load into the amp). Watch CAREFULLY that the driver output is constant (no dirty control, no spike etc.). Then it's time to be concerned about the 80M tuned input circuit failing on the KPA1500 and call Elecraft for specific tests. When the amp sees >=19 watts input, it wigs out, badly. (But the extreme outputs ARE >impressive; it's nice to have overhead at legal limit). GL, please let us know how it was resolved, Rick NK7I On 2/19/2020 9:10 PM, Ed gilliland wrote: > Hello Everyone, > > I'm getting the following error codes on 80 meters, 160 and 40 are > working. > > I suspected the 80m antenna so I tried using a dummy load and I get > the same error codes. Reducing the input power does not help. > > I've reloaded firmware 2.38. > > Anyone run into this problem? > > Ed W5TM > > > 918 20-02-19T23:00:11 OVR 61 - LOW GAIN freq 3544 inp 10W 36A 21C adc > 222 power ratio 0 > 917 20-02-19T22:59:55 OVR 61 - LOW GAIN freq 3544 inp 14W 43A 21C adc > 275 power ratio 0 > 916 20-02-19T22:59:31 FLT B0 - PWR DISS freq 3544 inp 14W 44A 20C pwr > dissipated 2313W > 915 20-02-19T22:59:31 OVR 61 - LOW GAIN freq 3536 inp 14W 43A 20C adc > 274 power ratio 0 > 914 20-02-19T22:58:40 FLT B0 - PWR DISS freq 3536 inp 19W 51A 20C pwr > dissipated 2676W > 913 20-02-19T22:58:40 OVR 61 - LOW GAIN freq 3536 inp 19W 51A 20C adc > 330 power ratio 0 > 912 20-02-19T22:55:01 ON 00 - ON 3 times firmware version 02.38 > 911 20-02-19T22:39:38 FLT 61 - LOW GAIN freq 3536 inp 10W 36A 23C adc > 223 power ratio 0 > 910 20-02-19T22:39:38 OVR 61 - LOW GAIN freq 3544 inp 10W 36A 23C adc > 222 > 918 20-02-19T23:00:11 OVR 61 - LOW GAIN freq 3544 inp 10W 36A 21C adc > 222 power ratio 0 > 917 20-02-19T22:59:55 OVR 61 - LOW GAIN freq 3544 inp 14W 43A 21C adc > 275 power ratio 0 > 916 20-02-19T22:59:31 FLT B0 - PWR DISS freq 3544 inp 14W 44A 20C pwr > dissipated 2313W > 915 20-02-19T22:59:31 OVR 61 - LOW GAIN freq 3536 inp 14W 43A 20C adc > 274 power ratio 0 > 914 20-02-19T22:58:40 FLT B0 - PWR DISS freq 3536 inp 19W 51A 20C pwr > dissipated 2676W > 913 20-02-19T22:58:40 OVR 61 - LOW GAIN freq 3536 inp 19W 51A 20C adc > 330 power ratio 0 > 912 20-02-19T22:55:01 ON 00 - ON 3 times firmware version 02.38 > 911 20-02-19T22:39:38 FLT 61 - LOW GAIN freq 3536 inp 10W 36A 23C adc > 223 power ratio 0 > 910 20-02-19T22:39:38 OVR 61 - LOW GAIN freq 3544 inp 10W 36A 23C adc > 222 > > __ > 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 Message delivered to > rick.n...@gmail.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 Message delivered to rocke...@gmail.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 Message delivered to arch...@mail-archive.com
