Re: [Elecraft] Elecraft] RFI on K3s

Home Depot is in Israel too? Fred K6DGW Vic Rosenthal wrote: >Get some no. 10 stranded wire at Home Depot (etc.), double it over, put one >end in a vise and the other in the chuck of your electric drill and twist >away. Not shielded, but much better than parallel wires. I

Re: [Elecraft] RFI on K3s

Get some no. 10 stranded wire at Home Depot (etc.), double it over, put one end in a vise and the other in the chuck of your electric drill and twist away. Not shielded, but much better than parallel wires. I suppose you could strip some RG-8 if you really wanted to shield it. Vic 4X6GP > On

Re: [Elecraft] Base Station

Bill, I am aware that the KX3 has dual watch. It's like having a second receiver but limited in frequency excursion. I also have a Tentec Orion II which does have a second receiver. Here's what I've sort of discovered. I came to find that I could zoom the spectrum to blow it up

[Elecraft] K3 Digital Readout

My digital frequency readout suddenly loses part of the digits. If I tap on the top of the receiver above the digital readout the readout returns to normal. Has anyone seen this before? Thanks and 73, Steve W0SZ __ Elecraft mailing

Re: [Elecraft] Base Station

While I agree about the usefulness of a spectrum display we should note that the KX3 has Dual Watch which permits listening to the pileup with one ear while listening to the DX with the other. I covers most of the issues in working pileups. I do remember one of the W1AW/P operators, wanting

Re: [Elecraft] RFI on K3s

Call them what you will, connecting a bunch of station components to a common DC power return has to be done very carefully. I've found that often the easiest solution is isolated power sources. Some accessories seem to be designed with the assumption of ground isolation using a dedicated wall

Re: [Elecraft] Base Station

On 6/20/2016 7:03 PM, Enzo Adrian-Reyes wrote: So any body here have any experience on running their KX3 as their main base station? if so how well does it do? Would a k3s be better? what advantage would I have with the K3S (baseline) compared to an upgraded KX3 (ATU, 2m, Roof filters fitted)

[Elecraft] Skeeter Roster posted

Happy 1st Day of Summer! Thank you to the first 55 intrepid QRPers who have signed up for Skeeter numbers. The roster can be found at: https://docs.google.com/spreadsheets/d/1KJWpvDDBZibCMqna_qGXF3Ayg8KdEw5f1N8K6ByGMe4/edit#gid=880964485 This year's rules can be found at www.qsl.net/w2lj

Re: [Elecraft] Base Station

I use the KX3 as a base station, with a PX3, KXPA100, external paddle, external speakers, and an old laptop. The biggest negative, I feel, is the amount of cabling I have ended up with. It requires assiduous use of cable ties to prevent my shack from turning into a cat's cradle. Reconfiguring

Re: [Elecraft] RFI on K3s

I've been told that the "loop" part of "ground loop" is a misnomer. I think the real problem is when a "chassis" connection doesn't really go to the conductive enclosure but rather follows on into the "ground" in the circuitry, which is probably better termed "common". In the olden days,

Re: [Elecraft] RFI on K3s

On Mon,6/20/2016 4:38 PM, K9MA wrote: Beware ground loops! Horse puckey -- ground loops do not exist, and this very false concept has caused hams to do completely wrong things to solve problems with hum, buzz, and RFI. http://k9yc.com/GroundingAndAudio.pdf 73, Jim K9YC

Re: [Elecraft] Elecraft Digest, Vol 146, Issue 28

Hi all, It is true that for fixed operation, weight and size would not be a factor. For portable operation both are critical, and a true 3A 14V 42W linear supply is neither light nor small. Even the 2A 12V (24W) linear supplies we have evaluated are over 32 ounces, are low duty-cycle, and

[Elecraft] KRC2 wanted

Anyone have a KRC2 They are willing to sell. I am in need of one.Thanks George NE2I __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] Base Station

Enzo, I may be a little more than a little biased, but I would say a KX3 makes an excellent base station. The only add ons that I can think you might want are the ATU and mic. If you use the 8 KHz shift, you can't use the optional roofing filter. Everything else you need is already

Re: [Elecraft] RFI on K3s

Beware ground loops! 73, Scott. K9MA -- Scott Ellington --- via iPad > On Jun 20, 2016, at 12:21 PM, Clay Autery wrote: > > Thanks... > > One of my goals is to completely eliminate wall warts in my shack. I > planned to use a nice quiet multi-voltage output

Re: [Elecraft] R: Re: K3S losing swr-wattmeters indications on tx - please help

Yeah, that's kind of how I've always thought of it, a "user is responsible for debouncing" type of thing. Especially the Dah paddle and my Kent straight key, when bouncing, may not be indistinguishable from a straight key going 100wpm as far as the rig is concerned LOL. So I never really thought

[Elecraft] Base Station

I know this list is a bit biased, however I am trying to set up my base station, I currently own a KX3 and an ICOM 7100, and I have an antenna that is an inverted V diapole, (Diamon W8010), which is hosted 6m up in the air. My problem is I live nearby a lot of interference due to high voltage

Re: [Elecraft] K3S losing swr-wattmeters indications on tx - please help

I experienced this very problem when I upgraded my K3 to the new synthesizers. The problem would go away if I took out the new synthesizers and reinstalled the old ones. I contacted Wayne about this issue and finally narrowed it down to “key bounce”. I was using high quality keys such as

[Elecraft] R: R: Re: K3S losing swr-wattmeters indications on tx - please help

You are totally wrong dear friend. I have the problem closing with a single dash contact for two three second making a rapid tune and it happen with two first class bugs, a new Begali Intrepid and a Vibroplex Presentation ‎with shining bright contacts and no audible bounces. If I work on K3S

Re: [Elecraft] RFI on K3s

Jim ... where does one find #10 twisted pair? Is it shielded? thanks 73 Dwight NS9I On 6/20/2016 12:59 PM, Jim Brown wrote: On Mon,6/20/2016 10:33 AM, James Walker wrote: Is it normal to register voltage as low as I’m seeing on my K-3? What you're seeing sounds like IR drop in the DC

Re: [Elecraft] R: Re: K3S losing swr-wattmeters indications on tx - please help

Odd ... I operate almost exclusively CW at 20 - 40 WPM with both a K3 (#0056) and a K2/100 (#5665) and have never experienced the problem you describe. FWIW, the K3 has been heavily used in numerous contests by KE7X. 73 K0PP On Jun 20, 2016 10:52 AM, "glcazz...@alice.it"

Re: [Elecraft] RFI on K3s

Jimmy, The voltage at your power supply may indeed be OK, but somewhere in the path to the K3, there is a huge resistance. Possible causes: - Lugs not tight at the power supply. Tighten nuts with a wrench. - Wire gauge inadequate for the K3 load on transmit - use #12 or better #10. - Long

Re: [Elecraft] R: Re: K3S losing swr-wattmeters indications on tx - please help

I have heard numbers like 90 and 100 wpm for operative QRQ for the K3, but don't have time to go research where I heard that. I *know* it runs sweet at 60 and 70 WPM. BTDT. But I will caution that certain problems with key contact surfaces will produce a signal impossible to debounce. These

Re: [Elecraft] RFI on K3s

I replaced two OLD astrons (over 30 years on each) last summer with a couple of Powerwerx SS-30DVs and have had no problems with noise at all. Having said that, I should qualify my statement: I have a typical noise level of band noise only. In other words, I receive no noise from local modern

Re: [Elecraft] RFI on K3s

Understand... I am conserving/reserving as much space as possible for amps and amp PS... and TMDE equipment. __ Clay Autery, KY5G MONTAC Enterprises (318) 518-1389 On 6/20/2016 1:19 PM, Rick Robinson wrote: > I guess space might be a concern on large current supply's. There

Re: [Elecraft] RFI on K3s

That is woefully unacceptable voltage regulation... you have an issue. I believe the MAX spread on the K3 is 11-15 VDC IIRC. __ Clay Autery, KY5G MONTAC Enterprises (318) 518-1389 On 6/20/2016 12:33 PM, James Walker wrote: > This thread has lead me to notice the comments on

Re: [Elecraft] RFI on K3s

Haven't yet... more of a general term to cover devicets/circuits to change a base voltage out to multiple needed. Many ways to skin that particular cat... ;) 73, __ Clay Autery, KY5G MONTAC Enterprises (318) 518-1389 On 6/20/2016 12:27 PM, Don Wilhelm wrote: > Clay, > >

Re: [Elecraft] RFI on K3s

I guess space might be a concern on large current supply's. There are ways around that but I was mainly thinking qrp level power supply's. On Mon, Jun 20, 2016 at 1:15 PM, Clay Autery wrote: > On 6/20/2016 12:03 PM, Rick Robinson wrote: > > Why, if the weight would not be a

Re: [Elecraft] R: Re: K3S losing swr-wattmeters indications on tx - please help

I imagine it's because of the QRQ support that it doesn't have dedicated debouncing circuitry for straight keys, but I'm not sure about that. The K2 does have some small caps across the key input, but it too still gives me slight problems when I key it with my straight key. Though it's not as bad

Re: [Elecraft] RFI on K3s

James - The first thing I would do is check the voltage at the K3. If you have a long run of cable from your PS, of if you have connectors that are not fully seated, or correctly installed, that would likely result in voltage drop that would be detrimental. Best of luck es 73 de Dave - K9FN On

Re: [Elecraft] RFI on K3s

On Mon,6/20/2016 10:33 AM, James Walker wrote: Is it normal to register voltage as low as I’m seeing on my K-3? What you're seeing sounds like IR drop in the DC cable. How long is the DC cable between the K3 and the power supply? What wire gauge? Is there any equipment (like distribution

[Elecraft] K3 plus External Tvtr problem - Advice required please.

Hi, I've been running my K3 with a Demi 2m tvtr now for a couple of years with no problem. I also have the K3 internal 2m tvtr as well. All has been well until the other week when I was trying to run a /P 2m EME demo station at a local radio fair and I was having major issues (ie - no

Re: [Elecraft] RFI on K3s

This thread has lead me to notice the comments on operating voltage. I’ve been having some trouble with my K-3 and the MCU LD message on startup. It was suggested that I monitor the voltage on the rig during operation. I get the 13.5 on receive. But the voltage drops as low as 10.5 on 100 watt

Re: [Elecraft] RFI on K3s

I frequently use my KX3 for portable operation after an airplane trip. A light weight PS is a big plus since I am frequently near the 50 lb (22 Kg) limit. BTW, I have been quite happy with my Pro Audio Engineering PAE-Kx33 power supply, even in rural New Hampshire with the associated very

Re: [Elecraft] RFI on K3s

Clay, Where do you find buck/boost converters that are other than switch mode devices? Most all I have seen are similar to switch mode power supplies. 73, Don W3FPR On 6/20/2016 1:21 PM, Clay Autery wrote: One of my goals is to completely eliminate wall warts in my shack. I planned to use

Re: [Elecraft] RFI on K3s

Thanks... One of my goals is to completely eliminate wall warts in my shack. I planned to use a nice quiet multi-voltage output PS(s) and/or buck/boost converters (or other circuitry) to supply power to every device in the shack reducing the clutter/complexity/potential culprits. Now, I am

Re: [Elecraft] RFI on K3s

On 6/20/2016 12:03 PM, Rick Robinson wrote: > Why, if the weight would not be a factor, do folks want to take a chance on > a potentially noisy ps ? Because some of us are EXTREMELY limited on space... My entire shack must fit in a cube 4 feet x 3 feet by 8 feet. I suspect there are other

Re: [Elecraft] RFI on K3s

How can you detect the drifting if RF if Iyou have to turn off the K-3 and the P3? Sent from my iPhone > On Jun 20, 2016, at 1:06 PM, G4GNX wrote: > > FWIW I still have a few issues with RFi, but I've managed to cure two of the > major ones, the rest are a matter

Re: [Elecraft] RFI on K3s

LOL! Mine IS one of the newer ones that was originally 14.19 VDC. I learned where the pot was at HAMCOM, and the first thing I did when I got home was adjust it to provide the K3s 13.8. I am aware that this voided my warranty... I'd rather eat the cost of a new SS-30DV and KNOW I'm feeding the

Re: [Elecraft] RFI on K3s

FWIW I still have a few issues with RFi, but I've managed to cure two of the major ones, the rest are a matter of finding time. At present, I'm running an MFJ 1500W auto-tuner which needs a 12V supply for the display, logic and relays. I had a massive drifting "birdie" on 40 metres, but it

Re: [Elecraft] RFI on K3s

Dave, you have brought up something I have wondered about for some time. I have had my kx3 for three plus years and have been on many lists and most everyone wants a smps instead of a small 3 amp linear supply. Radio Shack and many others made these supply's and they are plentiful at Hamfests for

Re: [Elecraft] RFI on K3s

I'm an old network guy, and have added "elimination of all parallel conductor cables" to my TODO list in favor of UTP/STP. Bottom Line: I want to quiet my "shack" as much as possible such that any significant RFI has to be external... __ Clay Autery, KY5G MONTAC Enterprises

[Elecraft] R: Re: K3S losing swr-wattmeters indications on tx - please help

Lucien, many thanks for your help. I am ashtonished. It is incredible that a great rig as the K3S doesnt have the simpler debouncing circuit on the key input, input obviously available for all mechanical kind of key, so with potential bounces. This afternoon I have written to elecraft support

Re: [Elecraft] RFI on K3s

FWIW, the ss-30dv that Elecraft sells is listed at 14.1 VDC. Older units sold elsewhere were listed at lower output voltage but you can adjust an internal pot to bring them up to 14.1. 73, Drew AF2Z On 06/20/16 11:30, Clay Autery wrote: I certainly hope you are correct. I love this little

Re: [Elecraft] RFI on K3s

On Mon,6/20/2016 3:46 AM, Dave Cole wrote: The last page says it is page 17 of 19... What's on the last 2 pages? Last two pages is stuff I deleted. :) BTW, nice job on the new paper on RFI! Thanks! 73, Jim __ Elecraft mailing

Re: [Elecraft] RFI on K3s

Marc and Drew, Appreciate the feedback... Checking my PS is my first test. Will power off all circuits except the one to my shack that runs the AC to the PS. Then I'll A/B with radio on battery and on the PS. (PS air-gapped/unplugged when on batt). If it is the PS, I'll try to choke the I/O

Re: [Elecraft] KX3/PX3 Lines on the screen

Also, if you are fortunate enough to have a QTH that enables an unusually low noise floor, engaging the preamp should push the 'lines' below the noise floor. 73, Dale - WA8SRA > Bill, > > That's normal and nothing to worry about as band noise covers it. There > was a posting about this before,

Re: [Elecraft] RFI on K3s

Cant help thinking, that the charge to discharge "Efficiency" is probably no better than a good linear PSU, but you do I guess get the "Off grid" option for EMCOM work.. There ARE (RF)quiet SMPS's out there, but not priced in a way that will suit the average Ham's budget. You get what you

Re: [Elecraft] KX2 Shipping Status

Hi Peter, Your KXPA100 order shipped to you on 6/15 California time, two days after your order. If you have further questions on your order, please email made...@elecraft.com and we will quickly help you. 73, Eric /elecraft.com/ On 6/17/2016 10:36 AM, Peter Pauly wrote: I ordered a KXPA100

[Elecraft] K2 VS KX3

Well not so much "VS"  Here is the storyI have been running my K2's since 2004 Built my first one then Picked up another half built with a problemwhich I was able to solve. And I built the KPA100 and tuner in a EC2 together but separate from the K2Anyway.I am looking to get something more

Re: [Elecraft] RFI on K3s

Gents, that’s my setup also with K3S #10125, and I’m convinced the Powerwerx SS-30DV is a stable, quiet, top-notch amp recommended by the fine people a Elecraft (it’s what they use on the road). However, thanks to some great advice from people here, I have eliminated the black-red zip cable

Re: [Elecraft] RFI on K3s

I certainly hope you are correct. I love this little power supply. It keeps my K3s/P3 smack dab on 13.8 RX and no lower than 13.5 on TX@100W. But it will be check #1. Learned a long time ago not to make assumptions or NOT eliminate variables (when possible). 73, __ Clay

Re: [Elecraft] RFI on K3s

On 6/20/2016 5:28 AM, Dave Cole wrote: > Sometimes you can "get a feeling", where they are located by watching > the timing... Do they drift in the morning, and after sunset, if so, > the SMPS might be outside, on in a non temperature controlled area, if > not it might be inside... > > Do they

[Elecraft] W2 problem

Hi everyone, I have a little used W2 wattmeter that has stopped working, but I have recently had access to a working unit so I could test the display and sensor unit independently. Both of mine have faults - The display has lost port nr 1 and it looks like R10 has been damaged on the PCB. What

[Elecraft] OT: 6 meters is open

Just worked Fred Cady KE7X on 6 meters - he has an S9 signal into KS this morning. Jim - W0EB __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] RFI on K3s

I've also used that Samlex supply, with no sign of RFI. Scott. K9MA -- Scott Ellington --- via iPad > On Jun 20, 2016, at 8:17 AM, Marty Koszewski wrote: > > I had the same issue. It was caused by my Powerwerx SS-30DV. After trying > a number of things to

[Elecraft] RFI on K3s

Is the Powerwerx SS-30DV currently sold in the elecraft order page? 73 Johnny VR2XMC 寄件人︰ Marty Koszewski 收件人︰ "elecraft@mailman.qth.net" 傳送日期︰ 2016年06月20日 (週一) 9:17 PM 主題︰ Re: [Elecraft] RFI on K3s I had the same issue.  It was caused

Re: [Elecraft] Safe to use a mono plug on the KX2?

The advice below is good but you can use a mono plug in the PHONES jack. Owner's manual Headphones and Speakers The 3.5 mm PHONES jack accommodates headphones or one or two externally amplified speakers. Mono or stereo plugs can be used. Stereo audio allows the use of dual watch and audio effects

Re: [Elecraft] RFI on K3s

I had the same issue. It was caused by my Powerwerx SS-30DV. After trying a number of things to mitigate the noise, I ended up replacing the power supply with a Samlex SEC 1235M. Noise gone. Problem solved. Marty - K1MTK

[Elecraft] KX3-2M power output

Has anyone verified the module's output between 0.1 and 0.5 watts? My (inexpensive) external meter tracks the KX3 settings above 0.6 but not below. Thanks, Karl W3BF __ Elecraft mailing list Home:

Re: [Elecraft] RFI on K3s

I do also have multiple turns of the p/s power cord wound through a large toroid, just for good measure. I investigated the Powerwerx at one time when I was having some RFI problems, comparing it side by side with a linear supply, and just didn't find the ss-30dv to be a problem. My main

Re: [Elecraft] RFI on K3s

My PowerWerx supply DOES generate those drifting noise spikes, ruining CW on 80 meters for me. I have yet to find a 13.8 volt switching supply that can provide 25 quiet amps. I've gone entirely to batteries rather than use quiet but inefficient linear supplies. Now I only have SMPS noise

Re: [Elecraft] RFI on K3s

I have a Powerwerx SS-30DV also. I think it is unlikely that this PS would put out that kind of trash. I've found it to be very quiet even listening with an endfed wire antenna within inches of it. 73, Drew AF2Z On 06/20/16 01:38, Clay Autery wrote: That's what I figured... Now to locate

Re: [Elecraft] RFI on K3s

On Sun, 2016-06-19 at 22:05 -0700, Jim Brown wrote: > Digital circuitry or SMPS are the most likely cause. See my latest  > tutorial, linked below, to learn how to tell which is which. 34 kHz  > suggests a 17 kHz square wave. > > http://k9yc.com/KillingReceiveNoise.pdf > > 73, Jim K9YC Jim, The