Re: [Elecraft] K3 Erratic Power Output

Larry, there's a good chance that the SWR bridge (FWD/REFL power measurement) on the K3 RF Board has a problem with the level scaling feature that switches on when you command a transmit power level above 12 watts. Check the K3 RF Board schematic (here I'm presuming you have the K3 rather than

[Elecraft] K3 Erratic Power Output

Over the weekend I did some more testing. Here are the results of my testing. The power display and SWR indication on the bar graphs are correct and linear with the power encoder up to 12 watts. When the PA engages at 13 watts the power goes up rapidly and the power and SWR indications on the

[Elecraft] K3 crazy power output fault

My K3F/100 S/N 298 has suffered a power output failure. Switched off last night everything normal and full power out as has always been the case. Switched on this morning and essentially nothing. The power meter flicks up and down like crazy. It's literally all over the shop. ALC shows a

Re: [Elecraft] K3 Strange Power Output Problem

Sent: Monday, May 14, 2018 12:34:36 AM Subject: Re: [Elecraft] K3 Strange Power Output Problem On Sun, May 13, 2018 at 5:17 PM, < donov...@starpower.net > wrote: Its hard to devise a solution without this knowledge! Frank, It's also hard to suggest a solution without a clear und

Re: [Elecraft] K3 Strange Power Output Problem

I had this same problem operating split while listening to 18.150 and transmitting on 16.298.5 the K3s would show zero output. However operating split from 20 meters to 16.298.5 worked. Yes I have the KBPF3, The other freq’s we used split worked fine. Dale, K9VUJ/AFA5DJ

Re: [Elecraft] K3 Strange Power Output Problem

On Sun, May 13, 2018 at 5:17 PM, wrote: > Its hard to devise a solution without this knowledge! Frank, It's also hard to suggest a solution without a clear understanding of the problem, which seems different than N3CW's original question. It's not clear to me what

Re: [Elecraft] K3 Strange Power Output Problem

th.net> Sent: Monday, May 14, 2018 12:02:17 AM Subject: Re: [Elecraft] K3 Strange Power Output Problem Frank, You still have the K3 Low Pass Filters to deal with. The KBPF3 in the sub and the use of a separate RX antenna may produce better results. But then Wayne is the guy t

Re: [Elecraft] K3 Strange Power Output Problem

- Original Message - From: "Wayne Burdick" <n...@elecraft.com> To: "Elecraft" <elecraft@mailman.qth.net> Sent: Sunday, May 13, 2018 4:06:51 PM Subject: Re: [Elecraft] K3 Strange Power Output Problem I have to admit, operating SPLIT between a ham band and

Re: [Elecraft] K3 Strange Power Output Problem

... tks 73 Frank W3LPL - Original Message - From: "Wayne Burdick" <n...@elecraft.com> To: "Elecraft" <elecraft@mailman.qth.net> Sent: Sunday, May 13, 2018 4:06:51 PM Subject: Re: [Elecraft] K3 Strange Power Output Problem I have to admit, op

Re: [Elecraft] K3 Strange Power Output Problem

I can't replicate this problem with the KBPF3 installed in the Sub Rx instead of the main. CONFIG:KBPF3 says "Not Inst", for main, "Sub Nor" when I tap SUB. If you have the KRX3 Sub Receiver installed, a possible workaround is to operate with SPLIT *OFF*, SUB ON. Now you're transmitting on A,

Re: [Elecraft] K3 Strange Power Output Problem

I have to admit, operating SPLIT between a ham band and a MARS band that falls outside the nearest ham-band filter isn’t something that occurred to me when writing the firmware. But I can change the filter selection algorithm to accommodate this case as long as a KBPF3 module is installed.

Re: [Elecraft] K3 Strange Power Output Problem

Another reading comprehension problem. On 5/12/2018 1:36 PM, Mark E. Musick wrote: Hi Ed, You don't have a transmit problem at all. It is not an anomaly. The amateur band starts at 10.100 MHz. You shouldn't be transmitting below that frequency. Hello, I noticed this power output

Re: [Elecraft] K3 Strange Power Output Problem

k E. Musick" <markmus...@sbcglobal.net>, elecraft@mailman.qth.net Sent: Saturday, May 12, 2018 8:45:02 PM Subject: Re: [Elecraft] K3 Strange Power Output Problem Hi Mark! I am transmitting on 10.113, and I do not change this. I am in Split mode, listening for NSS (who is transmitting o

Re: [Elecraft] K3 Strange Power Output Problem

I ran into this today too, different frequencies though. I recently installed the KBPF3 module and have it enabled full time. I think what happened is the VFO-A frequency sets the BPF segment to be used and with the wide split, it's not the right one for the VFO-B TX frequency to use. Therefore

Re: [Elecraft] K3 Strange Power Output Problem

get above 9.850 on RECEIVE, my power out returns to the expected 100 watts. --Ed— Sent from Mail for Windows 10 From: Mark E. Musick Sent: Saturday, May 12, 2018 4:36 PM To: 'Ed G'; elecraft@mailman.qth.net Subject: RE: [Elecraft] K3 Strange Power Output Problem Hi Ed, You don't have a transmit

Re: [Elecraft] K3 Strange Power Output Problem

-boun...@mailman.qth.net <elecraft-boun...@mailman.qth.net> On Behalf Of Ed G Sent: Saturday, May 12, 2018 7:25 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Strange Power Output Problem Hello, I noticed this power output anomaly today while trying to work the NSS station.

[Elecraft] K3 Strange Power Output Problem

Hello, I noticed this power output anomaly today while trying to work the NSS station. My K3 was in split mode, transmitting on 10.113.5. While I was listening on 9.448 (the NSS transmit frequency), I noticed that even though my K3 power level was set at 100 watts, the K3 was only

[Elecraft] K3-KXV3A Power output

Having just completed a recalibration of the power levels I noticed that the 28MHz transverter output only varies by approx. 4dB when the front panel power control is rotated from 0 to -10dB. Has anyone else experienced this and is it usual or just in my K3? Does anyone have any suggestions

[Elecraft] K3 no power output

Hi, Don: While using K3 (S/N 855) today, the power out of the K3 dropped to '0' in mid-sentence. I was putting out about 50 watts driving an ACOM 2000A. I checked all the obvious things, short of resetting the rig. From the rig straight to a dummy load (by passing the ACOM amp, etc.) there is

Re: [Elecraft] [K3] K3 Power Output

hb9ari wrote: I work essentially with JT65A mode; as this mode is a single tone mode, i've set the modulation level just before full ALC and power to 50W (for DX only...). At the beginning of a JT65A transmit sequence, the power start at ~ 25W and go up to ~ 48W in 3 to 5 sec. I'm

Re: [Elecraft] [K3] K3 Power Output

hb9ari wrote: Hi Trev, Since the beginning, i always get the same behavior with my K3 #1212 (factory build). I work essentially with JT65A mode; as this mode is a single tone mode, i've set the modulation level just before full ALC and power to 50W (for DX only...). At the beginning

Re: [Elecraft] [K3] K3 Power Output

hb9brj wrote: I'm active in WSPR mode, which is a single tone as well. Mode = DATA A, ALC = 4 bars, PWR = 5W. An external wattmeter shows an absolutely steady power throughout the entire 2-minute TX cycle. The bottom cover just underneath the LPA gets pretty hot, but at 5W the KPA3 is

Re: [Elecraft] [K3] K3 Power Output

Hi Markus, you prabably know but maybe good for the others trying WSJT/WSPR: You can try very simply power levels per tone by using WSJT menu Setup - Generate messages for test tones. Then you have @A - @D and @1000 and @2000 in TX1 - TX6 windows You can test each tone separately and try to

Re: [Elecraft] [K3] K3 Power Output

Hi Julian, I don't remember the reason(...) but i work in USB mode. I will try to work in DATA A mode this week-end and at the same time, recover the reason for the USB mode choice! (i read that somewhere!) For the ALC, i set the level just before the end of variation (if i'm correct, as i'm not

Re: [Elecraft] [K3] K3 Power Output

Hi Lexa, Very good info, i will do some tests this week-end. At the same time, a verification of the audio level response (WSJT/Sound card) should be a good precaution... 73 QRO de Rudolf, HB9ARI Alexandr Kobranov wrote: Hi Markus, you prabably know but maybe good for the others trying

Re: [Elecraft] [K3] K3 Power Output

Julian, G4ILO wrote: It would be nice to have the option to leave the KPA3 in at low power. I avoid using QRP for high duty cycle modes because I'm afraid it stresses the radio more than using 12W does. Julian, you can force the KPA3 to stay on by means of a workaround: Set PWR = 15W,

Re: [Elecraft] [K3] K3 Power Output

Ok! It's in the to do list! 73, Rudolf Alexandr Kobranov wrote: Absolutely! One thing is to have uniformity of power out (this is what we need as a final), the other is to know levels of AF out per tone from the sound card and then characteristic of the rest of line. Let me know your

Re: [Elecraft] [K3] K3 Power Output

...you can force the KPA3 to stay on by means of a workaround: Set PWR = 15W, then define actual TX power using MIC gain. This will most likely result in the radio's long term ALC gradually increasing gain in the transmit path until it either (a) runs out of gain or (b) hits it

Re: [Elecraft] K3 3.04 Power Output After Tune

We'll have a new beta release, probably tomorrow, that should correct all of the observed issues with power control. About 70 K3 owners are field-testing it. 73, Wayne N6KR e72x wrote: Yes, I've had the same problem, after I tune , I get low power out indicated Gordan, e72x, ---

[Elecraft] [K3] No Power Output

Hello everyone, as of last evening, my K3 is no longer indicating any power output on the RF meter during transmit. I've tried both PTT and VOX, as well as 2 different antennas. (dipole beam) When selecting ATU TUNE, I see the RF meter go to 5W as expected, but the SWR indicator above only

Re: [Elecraft] [K3] No Power Output

Onderwerp: [Elecraft] [K3] No Power Output Hello everyone, as of last evening, my K3 is no longer indicating any power output on the RF meter during transmit. I've tried both PTT and VOX, as well as 2 different antennas. (dipole beam) When selecting ATU TUNE, I see the RF meter go to 5W

Re: [Elecraft] [K3] No Power Output

. 73 Arie PA3A -Oorspronkelijk bericht- Van: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] Namens KB1PXD Verzonden: zondag 22 maart 2009 15:07 Aan: elecraft@mailman.qth.net Onderwerp: [Elecraft] [K3] No Power Output Hello everyone, as of last

Re: [Elecraft] [K3] No Power Output

...@gmail.com To: elecraft@mailman.qth.net Sent: Sunday, March 22, 2009 7:06 AM Subject: [Elecraft] [K3] No Power Output Hello everyone, as of last evening, my K3 is no longer indicating any power output on the RF meter during transmit. I've tried both PTT and VOX, as well as 2 different antennas

Re: [Elecraft] [K3] No Power Output

mode. Just a thought. Dave W7AQK - Original Message - From: KB1PXD bill.kim...@gmail.com To: elecraft@mailman.qth.net Sent: Sunday, March 22, 2009 7:06 AM Subject: [Elecraft] [K3] No Power Output Hello everyone, as of last evening, my K3 is no longer indicating any power

Re: [Elecraft] K3 no power output

Make sure that you are not in test mode. Is the TX panel indicator flashing? If so press and hold TEST to turn it off. Steve N9SZ Dave N1IX wrote: -I just received a new to me K3. It is a recent serial number 18XX. -The receiver works fine but there is no output power. It goes into transmit

Re: [Elecraft] K3 no power output

n1...@aol.com wrote: I just received a new to me K3. It is a recent serial number 18XX. The receiver works fine but there is no output power. It goes into transmit the transmit light illuminates.? but no power at all in any mode or on any band nada, nil,? zero!!!? I have checked all the

Re: [Elecraft] K3 no power output

: Vic K2VCO v...@rakefet.com To: n1...@aol.com Cc: Elecraft Reflector elecraft@mailman.qth.net Sent: Tue, 10 Feb 2009 10:39 pm Subject: Re: [Elecraft] K3 no power output n1...@aol.com wrote:? I just received a new to me K3. It is a recent serial number 18XX. The receiver works? fine

[Elecraft] K3 Measured Power Output versus Commanded Power Output

I've recently run a series of measurements comparing the commanded power output with measured power output for my K3, using an HP437B/8482A power meter. The details are at http://www.cliftonlaboratories.com/k3_power_setting_accuracy.htm After updating my K3's firmware to the most recent beta

[Elecraft] K3 variable power output

Many thanks to Mike, N5WNG, and Jeff, W7BRS, for comments. I'm measuring the output power on an external power meter and the internal power meter is pretty well spot on. I have a KAT3 and I've been doing the ATU TUNE (10W) before I key at 50W or whatever. I noticed that the PA TEMP was set

[Elecraft] K3 variable power output

I'm running firmware 2.57 and I've recently noticed this... An odd effect with the output power: it builds up from 5W to the dialled in power over the course of about 5 QSOs after I change bands. If I stay in a band and increase the power from, say, 50 to 70 watts, the output immediately

RE: [Elecraft] K3 variable power output

, 2008 8:07 AM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 variable power output I'm running firmware 2.57 and I've recently noticed this... An odd effect with the output power: it builds up from 5W to the dialled in power over the course of about 5 QSOs after I change bands. If I stay

[Elecraft] K3: No Power Output

Ok, I need some help. My K3 has been working great, even though I have not found much time recently to operate. I listen more than I talk, and everything has been great. Today I sit down after work and turn it on and attempt to transmit. No power output. The display reads zero watts,

Re: [Elecraft] K3: No Power Output

...The TX icon is flashing on and off. This means the radio is in TX TEST mode. Hold the TEST button (the right side of the MODE switch) to cancel TX TEST mode and return to normal transmit operation. 73, Lyle KK7P ___ Elecraft mailing list Post

Re: [Elecraft] K3: No Power Output

Thanks Lyle, but I have already tried that, and the K3 is NOT in test mode. On Oct 17, 2008, at 7:26 PM, Lyle Johnson wrote: ...The TX icon is flashing on and off. This means the radio is in TX TEST mode. Hold the TEST button (the right side of the MODE switch) to cancel TX TEST mode

Re: [Elecraft] K3: No Power Output

William Evans wrote: Thanks Lyle, but I have already tried that, and the K3 is NOT in test mode. Check CONFIG TX INH. If it isn't off and the TX INHIBIT pin is floating, it might cause the symptom you have. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco

Re: [Elecraft] K3: No Power Output

Thanks Vic... that was it. Somehow TX INH had been set to LO=INH. I set it back to OFF, and power suddenly returned. Thanks again for the wisdom of this group! Bill W4ish On Oct 17, 2008, at 7:37 PM, Vic K2VCO wrote: William Evans wrote: Thanks Lyle, but I have already tried that, and

Re: [Elecraft] K3 erratic power output

k7ca wrote: Hello All, I just received K3 kit serial # 1253 with KPA3, KBPF3, KXV3 and KUSB options. The kit was very well thought out and was a pleasure to assemble. It went together in under 8 hours. Everything seemed to calibrate well and work perfectly except for the 100 watt

[Elecraft] K3 erratic power output

Hello All, I just received K3 kit serial # 1253 with KPA3, KBPF3, KXV3 and KUSB options. The kit was very well thought out and was a pleasure to assemble. It went together in under 8 hours. Everything seemed to calibrate well and work perfectly except for the 100 watt PA. When running 12