Re: [Elecraft] K2 Serial Port Question

2016-10-15 Thread Guy Olinger K2AV
Remembering that the DB9 jack on the back of the K2 is not RS232, if an RS232 device like a USB/serial cable was ever plugged in directly, stuff can be smoked, and on both ends of the serial cable. Most of the pins are used to talk to the 100w amp and tuner mounted externally. Voltmeter sounds

[Elecraft] diagram K3S

2016-10-15 Thread pe1bsb
after building K3S10 we experienced oscilating and low power to take a better look at a problem with the final 10Watt KLPA3A (the one with two fets not 3 in the final) we are in desperate need of a diagram Final has been oscilating and power is round 3 Watt. dit get one new fet from our dealer,

Re: [Elecraft] diagram K3S

2016-10-15 Thread Bill W4ZV
I don't believe K3S schematics are available yet, but the K3 schematics are probably close and may help. http://www.elecraft.com/manual/K3_Schematics_Jun_2010.pdf 73, Bill W4ZV -- View this message in context: http://elecraft.365791.n2.nabble.com/diagram-K3S-tp7623381p7623382.html Sent

Re: [Elecraft] K2 Serial Port Question

2016-10-15 Thread Don Wilhelm
Brad, It is good to hear you are using the special cable. Do NOT plug a standard serial cable into the AUX IO connector, that can damage both the K2 and the serial port. First, check to see if the PORT menu setting is ON. That is in the secondary menu (enter the menu and tap display to get

[Elecraft] K3S low output power on 160m

2016-10-15 Thread sq9cnn
Hi, I just notice that my k3s with the latest firmware transmits only about 60W on 160W. I made just a couple of qsos on 160, but I am more than sure that the ouput power was OK at about 100-110W. I just made tx power calibration, did not help. On all other bands the max power is 110W. I do

Re: [Elecraft] K3 Drops Out of Split Mode

2016-10-15 Thread n3xx
Hi Ron, Terry - W7KW is the one having the problem. I hope he sees your message. 73, Tim - N3XX On 2016-10-15 3:53 PM, Ron D'Eau Claire wrote: Hello Tim: Are you changing bands? IF so be sure CONFIG:SPLT SV is YES or when you come back split will be off. 73, Ron AC7AC -Original

Re: [Elecraft] K3S QST Article

2016-10-15 Thread ab2tc
Quote: "Unless things have changed they test at one frequency and assume the other bands produce the same results. " Hi, I don't believe this is true. The ARRL publishes a "typical" IMD figure and a "worst case" figure which I assume to be the worst case for any band and they they publish which

[Elecraft] (K3) APF and selected bandwidth

2016-10-15 Thread Robert G Strickland
When using the APF, does it make a difference which bandwidth has been selected? Or in other words, does APF work better on top of a narrow or wide bandwidth, or is selected bandwidth irrelevant? Thanks. ...robert -- Robert G Strickland, PhD ABPH - KE2WY rc...@verizon.net.usa Syracuse, New

Re: [Elecraft] JT-65

2016-10-15 Thread Nr4c
Same as PSK31, use DATA mode, submode DATA A. Adjust Line In for 4 solid bars of ALC with Fifth bar flashing. Use wsjt-x software. Sent from my iPhone ...nr4c. bill > On Oct 15, 2016, at 9:33 AM, Steven Stuckey wrote: > > I looked in the owners manual and did a search for

[Elecraft] More like K3S vs K3s

2016-10-15 Thread Terry Schieler
Actually, way back when the K3S was introduced, we poked a lot of fun at not being able to distinguish the new K3S from the possessive of a K3 or the quantities of K3Ss. Those of us involved in those exchanges were clear when Wayne "suggested" that we use K3S (capital S) for the new radio when

Re: [Elecraft] K3S QST Article

2016-10-15 Thread Bill Leonard N0CU
Wayne, For those of us with the unmodified KLPA3A (10 W module), can the mods be done by a skilled engr/tech. If so, can the parts be made available as a kit. If not, can just the module be sent in for modification instead of the whole radio. Bill N0CU -- View this message in context:

[Elecraft] Elecraft CW Net Announcement

2016-10-15 Thread kev...@coho.net
Good Evening, During this short lull in the storm I can get this sent. High winds have left the antenna intact, thus far. Who knows what the back side of this storm will bring? Only 70 mph winds but the limbs are flying pretty well at those speeds. I think there has been (will be) a time

Re: [Elecraft] K3S QST Article

2016-10-15 Thread David Gilbert
There was a major initiative at least 15 years ago in the automotive industry to go to 28 volt systems in order to reduce the cost and weight of the heavier wires that were needed to cope with the expanding current drain as more things in the car went electronic. Not sure what happened to

Re: [Elecraft] K3S QST Article

2016-10-15 Thread ab2tc
Hi, Well, as I remember it there was once a push to move to 48V for automotives but that never happened (so far). I was always skeptical on the wisdom on moving to FET finals at the 12V level. Generally bipolars work better at this low voltage. FETs come come into their own at higher voltages

Re: [Elecraft] (K3) APF and selected bandwidth

2016-10-15 Thread Ken Arck
The narrower the bandwidth, the better signal to noise. That should answer your question :-) Ken At 07:39 PM 10/15/2016, Robert G Strickland wrote: When using the APF, does it make a difference which bandwidth has been selected? Or in other words, does APF work better on top of a narrow or

Re: [Elecraft] (K3) APF and selected bandwidth

2016-10-15 Thread Brian Hunt
On the other hand, when used in conjunction with NR a wider DSP BW is desirable since NR works on uncorrelated noise. Try: BW= 700-1000 Hz, NR= ~ 5-3 APF= ON Great for pulling out weak signals on an uncrowded band. The NR settings of 5 and above mix processed and non-processed data so the APF

Re: [Elecraft] K3S QST Article

2016-10-15 Thread K9MA
The reason DC power systems in vehicles and aircraft used 28 V or less historically is that that was the highest DC voltage that could be switched mechanically without excessive arcing. (Has to do with the energy required to pull electrons out of metals, I believe.) With the solid state

Re: [Elecraft] JT-65

2016-10-15 Thread David Shoaf
Assuming you're referring to a K3S, here's a nice set up posted at eHam.net . It provides many of the fundamental configuration details that apply if you're using a KX3 or KX2 as well. If you havent' done so, my suggestion is that you get PSK31 set up and

Re: [Elecraft] K3S QST Article

2016-10-15 Thread Wayne Burdick
The improvements we made this year (referenced in my previous posting) bring up both worst-case and average performance of the K3S on all bands, at all power levels. Regarding the Yaesu radio that hit -38 dBc worst-case using the same PA topology: luck of the draw. There are many factors,

[Elecraft] JT-65

2016-10-15 Thread Steven Stuckey
I looked in the owners manual and did a search for JT-65 and nothing was found. What do I need to do to use JT-65? I was told once and forgot. I want to know again and I will save it this time. Thanks in advance. -- ​73​ Steven Stuckey - AC9GK - Indiana

Re: [Elecraft] diagram K3S

2016-10-15 Thread Wayne Burdick
This should never happen. You could have an issue with the T/R switch. Please contact customer support. We'll also work on getting the latest schematics ready for publication. 73, Wayne N6KR On Oct 15, 2016, at 1:15 AM, pe1bsb wrote: > after building K3S10 > > we

Re: [Elecraft] JT-65

2016-10-15 Thread Ken Bandy, KJ9B
Hi Steve, if you're still using DXLabs, you can use MultiPSK, which utilizes the "Commander" module of DXLab Suite. That's what I do, and it works perfectly. No additional hardware needed with the K3S, just the USB interface from the radio to the PC. Only thing to watch out for is to make

[Elecraft] K3 Drops Out of Split Mode

2016-10-15 Thread w7kw.terry
When operating CW my K3 frequently drops out of Split Mode Operation. Has anyone seen this? I need to get this fixed!! De Terry W7KW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] K3 Drops Out of Split Mode

2016-10-15 Thread Ron D'Eau Claire
Hello Tim: Are you changing bands? IF so be sure CONFIG:SPLT SV is YES or when you come back split will be off. 73, Ron AC7AC -Original Message- From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of n...@charter.net Sent: Saturday, October 15, 2016 10:05 AM To:

Re: [Elecraft] K3S QST Article

2016-10-15 Thread Kevin
Yaesu's secret was the ARRL. Unless things have changed they test at one frequency and assume the other bands produce the same results. I'll reverse the question, what has Yaesu done to rigs since 1991 that they can't reproduce those numbers? On 10/14/2016 10:03 PM, Dave Hachadorian wrote:

Re: [Elecraft] K3S QST Article

2016-10-15 Thread Wayne Burdick
No doubt in 1991 they were using bipolar transistors, which in some cases could hit a "magic" combination that resulted in better than average performance. These days everyone uses MOSFETs, which are consistently in the -30 dBc range on at least one band. The K3S with the latest updates

Re: [Elecraft] K3 Drops Out of Split Mode

2016-10-15 Thread n3xx
Try closing any logging program or other program that could be sending commands to the K3 and see if the problem stops. GL --- 73, Tim - N3XX On 2016-10-15 12:35 PM, w7kw.te...@gmail.com wrote: When operating CW my K3 frequently drops out of Split Mode Operation. Has anyone seen this? I

Re: [Elecraft] K3 Drops Out of Split Mode

2016-10-15 Thread gn525--- via Elecraft
I second that. Unplug your CAT cable and the issue will likely go away. What logging/control program are u using? Gary K9JN From: n...@charter.net Sent: ‎Saturday‎, ‎October‎ ‎15‎, ‎2016 ‎12‎:‎04‎ ‎PM To: Elecraft Reflector Try closing any logging program or other program that

Re: [Elecraft] K3S QST Article

2016-10-15 Thread Ron D'Eau Claire
And therein lies the reason for using 12V. It would have been easier had we gone from 6V automotive power to 28V as is used on many aircraft so manufacturers were encouraged to build generators and equipment for that voltage, but that didn't happen. 73, Ron AC7AC -Original Message-

Re: [Elecraft] K3S QST Article

2016-10-15 Thread Bill Frantz
It seems to me that this solution would tie the K3S++ to mains power. Being tied to mains power would impact my club's use of K3s with batteries on events like the California QSO party. (Our location does not permit generators.) I don't know how much such a restriction would shrink the K3S

Re: [Elecraft] JT-65

2016-10-15 Thread Eric J
Also keep in mind it is a 100% duty cycle mode. I run my K2 at half power and have no problem whether barefoot or running the K2/100. I blew the finals in my HF Packer twice when I forgot even with a small fan mounted on the heatsink. Eric KE6US On 10/15/2016 6:55 AM, David Shoaf wrote:

Re: [Elecraft] K3S QST Article

2016-10-15 Thread Wes Stewart
My experience suggests that running the low power amp in a K3(S) above 10W is a disaster. In a K3(S)/100 the HPA isn't activated until above 12W. IMHO, again based only on my measurements of my K3 and my K3S (before mods), I would recommend that Elecraft change firmware to set the max power

Re: [Elecraft] K3S QST Article

2016-10-15 Thread Wayne Burdick
Wes, This would be a simple firmware change, and it might be worth considering. But typically we see -30 dBc or better at 12 W in production with the latest revisions. 73, Wayne N6KR On Oct 15, 2016, at 7:59 AM, Wes Stewart wrote: > ….I would recommend that Elecraft

Re: [Elecraft] K3S QST Article

2016-10-15 Thread Wes Stewart
Wayne, Ok, I'll defer to your numbers. Offhand I don't have mine handy, but I was pretty amazed at how quickly the IMD rose above 10W. I'm not saying anything new here, back in December in this thread http://elecraft.365791.n2.nabble.com/Powering-a-K3s-from-a-battery-tt7611959.html#a7611980,