Re: [Elecraft] RFI in audio chain

I will continue to try solutions, but they seem to be getting random. I found my long 50-ohm coax run to the 80-meter vertical. It ends in a DX Engineering 1:1 balun with terminals. I have tried this before. I connected one of the terminals to the vertical and the other to the ground base.

[Elecraft] K3S USB RS232 P3 Conundrum

Just put my first K3S on line, replacing a K3. For the moment, I am using the E980297 cable to go to the P3 and then the P3 to the computer. I also have a Y at the computer with a cable going to the CAT input to the Acom 2000A amplifier. Acom says they get serial data from pins 1 and 5, but the

Re: [Elecraft] K3S USB RS232 P3 Conundrum

RS232 DB9 "Y" off of the computer side of the P3. Make sure you are only listening and not hooked up to send data to the P3/K3 via this path. We basically take the USB comm data between the K3 and the computer and then echo it out the RJ45 CBLP3Y connector to the computer input DB9 on the P3.

Re: [Elecraft] K3 Voltmeter calibration ...

As I responded to to Mark off list, I know the REF ADC calibration and had already performed it *before* asking for assistance here. The voltage display was off by more than 0.5 V prior to performing REF ADC. The remaining the error is still unacceptably high at more than 0.2 Volts when a

Re: [Elecraft] P3 Showing Transmit Signal

I wonder if this phenomenon could be related to N1MM+. I have never seen this happen before (without N1MM+ running). I was using N1MM+ logging with a lot of functions running. That might explain the delay. Interesting. Gene N9TF The K3 is supposed to send a command to the P3 to tell it whether

Re: [Elecraft] K3 Voltmeter calibration ...

The measured voltage is what the rig is really seeing, after the protection. If you don’t want that, you need to put your own voltmeter outside the rig. A 0.2V difference isn’t calibration, this is you disagreeing with an Elecraft design decision. wunder K6WRU Walter Underwood CM87wj

Re: [Elecraft] P3 Showing Transmit Signal

The K3 is supposed to send a command to the P3 to tell it whether it is in transmit or receive mode. Apparently sometimes that isn't happening for some reason. It could be an intermittent RS-232 connection between the K3 and the P3 or perhaps some software running on a PC is overloading the

Re: [Elecraft] K1 headphone jack

Actually, the failure is because the lever that operates the switch at the rear of the jack has broken. That failure has nothing to do with lateral forces on the key jack, but is a failure that is related more to the number of times the headphone jack has been inserted and removed. If the

Re: [Elecraft] K1 power output on 15 meters

The K1 should develop greater than 5 watts on any band as long as the power supply during transmit is greater than 12 volts. I suggest turning to the Troubleshooting section of the Owner's manual and doing the Transmit Signal Tracing procedures to determine which stage is failing. Once that

Re: [Elecraft] P3 Showing Transmit Signal

I noticed this a few times as well with my K3S and P3. When it happened, I was running a frequency, and I would go into TX sometimes before the P3 would unfreeze and the P3 would display my TX peak, following my modulation. Seemed to maybe happen at some transition of the P3 going back to RX when

Re: [Elecraft] K3 Voltmeter calibration ...

On 11/24/2015 8:17 PM, Walter Underwood wrote: The measured voltage is what the rig is really seeing, after the protection. That *is not the case* I've checked the voltage on the KPA3 and, again, the Voltage display is approximately 0.2 Volts *lower* than measured at "12PA" - the output of

Re: [Elecraft] Using X-lock to stabilize PLL osc??

Well, I made some measurements tonite. Using the k2 counter to track the BFO and an external counter to track the PLL, I measured from cold start to 45 minutes, with no transmitting. The results: PLL drifted 50hz UP, and the BFO drifted 60 hz DOWN. Perfect for the higher bands where they almost

Re: [Elecraft] K1 headphone jack

Don, if I move the body of the plug laterally the tip of the plug in contact with the spring contact and switch moves laterally inside the jack itself with the ferrule at the opening of the jack acting as a fulcrum. So it's hard to understand why you think that cannot cause the failure. 73, Ron

Re: [Elecraft] KX3 VSWR problem

Jim Rodenkirch wrote > > I'm not sure I understand..are you saying with the ATU removed the > VSWR is 1.2:1 and with it > > installed but not tuned it's 1.8:1 until the ATU "kicks in and does its > job??? Hi Jim, Sorry for the confusion. I'll pull everything into this post to put it in

Re: [Elecraft] K3 Voltmeter calibration ...

Joe, as a point of reference, I have a K3 with the bottom off on the bench so I checked the voltage at the terminals of the APP connector on the RF board with two DMMs. One DMM says 13.63 and the other says 13.66. The FP display says 13.4. It sure looks like they aren't compensating for the

[Elecraft] W1 Power Meter For Sale

I have a like new Elecraft W1 Power Meter for sale. It is built into a W8FGU LexanR enclosure and stand with BNC connectors on the back side of the enclosure and a power on/off switch. Includes the Elecraft and W8FGU manuals. Will ship priority and insure in the continental US for $130. Payment

[Elecraft] Palm single paddle (cootie) and KX1

Hi Everyone I'm having a problem getting my Palm single paddle to operate in cootie mode with my KX1. It works fine as a paddle. I've tried selecting the cootie position on the paddle and selecting the handkey option on the KX1 menu. Any suggestions? BTW, the paddle works great with my KX3 as a

Re: [Elecraft] Stereo Speaker for K3

Hi Steve, I have used a pair of Motorola HSN4018C mobile radio speakers with my K3 for years, as well as now with my new K3S. They are tailored for communications-grade voice frequency response. They are black and look great next to the rig. They are not inexpensive if you order them new,

Re: [Elecraft] K3 Voltmeter calibration ...

A variation of 0.2 volts at 13.6V is less than 1.5%. I wonder how accurate the voltage measuring circuitry is in the K3? 73, Bob Bob Nobis - N7RJN n7...@nobis.net > On Nov 24, 2015, at 15:39, Ron D'Eau Claire wrote: > > Joe, as a point of reference, I have a K3 with the

Re: [Elecraft] Stereo Speaker for K3

However, make sure that they match in volume too. I've had two identical speakers with one of them several db lower in volume (fortunately I had more, so I used another). Both appeared to be in near new condition. Once matched, outstanding. I've used them for many years in mobile environs

Re: [Elecraft] K3 Voltmeter calibration ...

Joe, if you just want to make the K3's voltmeter match your "known good" reference meter, you need to adjust the "ADC REF" value. Go into the CONFIG menu, set Tech mode "On", then go to the "ADC REF" setting. Note what it is before changing anything, in case this adjustment affects anything

Re: [Elecraft] RFI in audio chain

Gee whiz -- I go into the hospital for a week and thing go WAY off the rails! Thanks to W4TV and W3FPR for intelligently moving the discussion back on track. Questions: EXACTLY what is the configuration the the "vertical antenna? Quarter-wave with radials or half wave without radials? How

Re: [Elecraft] K3 Voltmeter calibration ...

Joe check your schematic and you will see there is both a polyfuse and a diode in series with the K3 front panel. The 100w PA pulls off its current ahead of the fuse and diode so using the front panel is not indicative of the voltage of the current going to power amp. Hang a voltmeter on the APP

[Elecraft] Unable to change RS 232 baud rate

In my effort to follow the Remote shack advise to set rate at 4200? (lowest rate) I find I cannot get the K3 to "accept" the change. It goes back to 38000. Is not any CONFIG change accepted with the push of the key? Any Remote Shack users? Robert Sands K7VO

Re: [Elecraft] K3 Voltmeter calibration ...

Fred, Diode, polyfuse, etc. does not matter. There should be a calibration routine so it can be set correctly. I remember setting it when this K3 was assembled but can not find the procedure in the current manuals. What is the calibration procedure? 73, ... Joe, W4TV On 11/24/2015

Re: [Elecraft] K3 Voltmeter calibration ...

I've already set ADC REF as documented in the manual. The Voltage is still off. There should be a procedure to set the voltage as there was when I assembled this K3 (s/n 1450) several years ago. Unfortunately, I can no longer find it in the current Owner's Manual or Assembly Manual. 73,

Re: [Elecraft] K3 Voltmeter calibration ...

Just checked my K3/10 and it displays 13.7 with 13.73v measured where the power cable is attached to my power distribution. Negligible voltage drop in Elecraft supplied power cord when in Rx which displays 1.01a. 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag business:

Re: [Elecraft] K3 Voltmeter calibration ...

You could easily drop 0.2 volts in the cable depending how long it isand the gauge of the wire. Not in six feet of #10 wire at 1.5A. Even if it were #12 the voltage drop should be less than 0.03V (1.62 Ohms/1000 feet for #12). 73, ... Joe, W4TV On 11/24/2015 10:39 AM, Robert Nobis

Re: [Elecraft] K3 Voltmeter calibration ...

It matters not if there is a series diode. The Voltmeter should be calibrated to the input power. I remember that being the case when I assembled my first K3. 73, ... Joe, W4TV On 11/24/2015 11:02 AM, Michael Blake wrote: Joe, is there not at least one diode junction or solid state

[Elecraft] P3 Showing Transmit Signal

I noticed this weekend that occasionally during transmit instead of the scan freezing in place it would continue scanning showing only my transmit signal with only that signal appearing in the black waterfall. I don't have the P3TXMON. It never did this before. I was viewing the external SVGA

Re: [Elecraft] 80w 2m amp sales

January orders closed with five assembled and one kit ordered. Ordering is open for later production (February+) http://www.kl7uw.com/kits.htm 73, Ed - KL7UW http://www.kl7uw.com "Kits made by KL7UW" Dubus Mag business: dubus...@gmail.com

[Elecraft] US Spot Counts...

Hi, Please forgive a slightly off topic post here... I have just added US Spot counts by hour, for all bands as an aid to knowing when the band is open, to my web page. See: http://nk7z.net/prorogation/cluster-spot-counts/ -- Thanks and 73's, For equipment, and software setups and reviews

Re: [Elecraft] For Sale KAT500 Auto Tuner - SOLD

The KAT500 is now sold/spoken for. Thanks Javier On Monday, November 23, 2015 6:33 PM, Javier Campos wrote: I am making some changes to  the station and my Elecraft KAT500 is excess to my needs. Elecraft KAT500 High Power Auto Antenna Tuner SN#962 about 2.5

Re: [Elecraft] K3 Voltmeter calibration ...

And the info below is what I found in Fred Cady's book on the K3. There is no other "calibration" for voltage in that book. Until Don Wilhelm or Wayne Burdick chimes in, I suspect there may not be any other adjustment available. 73, Brian, W6FVI On 11/24/2015 1:49 PM, Joe Subich, W4TV

Re: [Elecraft] K3 Voltmeter calibration ...

I sent Joe K3 manual REV D6 from early in 2010. On page 53 of that manual it has the following description for ADC REF and how to calibrate it. ADC REF Allows calibration of the voltage reference used by the K3 to measure and display certain values, such as the rig's supply voltage. (Optional.)

Re: [Elecraft] RFI in audio chain

You have now eliminated the problem from causes in your station layout and the antenna/feedline to the K3 - as the complete same using the 730 works fine. True? Not true ... the Icom uses an electret mic, not the dynamic Audio- Technica. If the microphone is wired correctly, the issue is in

[Elecraft] K3 Voltmeter calibration ...

OK, I'm sure I am overlooking something simple but I can not find (or remember) how to calibrate the voltage display in the K3. I had to repair one of my Astron RS-35A power supplies for the first time in 30 years (one of the diodes shorted) and when I put it back on line I decided to double

Re: [Elecraft] Using X-lock to stabilize PLL osc??

It does appear that there is significant drift in the BFO. I'm going to make more exact measurements. It seems to me that I read an old post from Wayne or Eric (when they announced the BFO mod) that said they would be experimenting with N750 caps in the BFO, but never saw anything about the

Re: [Elecraft] RFI in audio chain

1. I have printed out Joe's directions and placed them in the K3 file - for future reference. 2. Is you K3's chassis connector OK - loose ground? 3. Have a proper ground from the K3 to your station ground? 4. You are using the same feedline to test the K3 as used to test the 730? If not - do

Re: [Elecraft] KX3 VSWR problem

WD4SDC wrote Equipment: KX3 S/N 7210, FW 02.25 Problem: 6M band -> VSWR 1.8:1 (KX3 meter) on 50ohm load connected directly to ant connector (no cable). Followed by this UPDATE: The test was to disconnect the remove the ATU board and connect the RF board directly to the antenna port - which

Re: [Elecraft] K3 KIO3

As I understand it, the P3 and the K3 communicate at 38400 only so you need to leave the K3 at 38400. However if you have an application that needs to communicate with the K3 as some other baud, for example 9600, you can set the P3's rate to that and the application, like the utility, will

Re: [Elecraft] K3 KIO3

Not the issue. The post was meant for support, not the list. Mea culpa! 73, Mike NF4L > On Nov 24, 2015, at 7:59 AM, Per-Tore Aasestrand wrote: > > The P3 translates the speed of the K3. > Both K3 & P3 should be set to the same baudrate for performance reason. > > P-T > LA7NO

Re: [Elecraft] EXT ALC with KPA-500

Hi David, Not needed. Leave it OFF. 73, Mike K2MK David Winarsky wrote > Hi, > > Long time reader, first time poster here. I really enjoy this list and > have found countless solutions here. I'm new to the full k-line I've read > through both manuals and previous posts, but haven't been able

[Elecraft] K3 KIO3

I'm writing a Windows program for the K3. It connects at 38400 only. In trying to figure out what's wrong, I set my P3 and K3 to 9600 and used the K3 Utility. It will not connect. If I set the K3 to 38400 and leave the P3 at 9600, the utility connects, but reports it's connected at 9600.

Re: [Elecraft] K3 KIO3

The P3 translates the speed of the K3. Both K3 & P3 should be set to the same baudrate for performance reason. P-T LA7NO On 24 November 2015 at 13:54, Mike Reublin NF4L wrote: > I'm writing a Windows program for the K3. It connects at 38400 only. In > trying to figure out

Re: [Elecraft] K3 KIO3

Thanks, Fred - The issue is that nothing talks to the K3 at any rate other than 38400. The post was meant for support, but the list is often a tad faster. 73, Mike NF4L > On Nov 24, 2015, at 8:09 AM, Cady, Fred wrote: > > As I understand it, the P3 and the K3 communicate

Re: [Elecraft] K3 Voltmeter calibration ...

Joe, How long is your power cable from the RS-35A to your K3, and what gauge wire is used? You could easily drop 0.2 volts in the cable depending how long it is and the gauge of the wire. 73, Bob Nobis - N7RJN n7...@nobis.net > On Nov 24, 2015, at 08:06, Joe Subich, W4TV

Re: [Elecraft] K3 Voltmeter calibration ...

Joe, is there not at least one diode junction or solid state switch in series with the input power inside the K3? Michael Blake - K9JRI > On Nov 24, 2015, at 10:06 AM, Joe Subich, W4TV wrote: > > > OK, I'm sure I am overlooking something simple but I can not find > (or