Re: [Elecraft] K3 output power failure.

W3LPL and other mentioned the PA temp and sagging power supply. I didn't think to check the PA temp until later (how much later, I don't know), If I remember correctly, it was 35C. In both cases, I was operating in a contest (ARRL 160 and ARRL RTTY RU) with the RF power set to 100w Sitting in

Re: [Elecraft] K3 output power failure.

What was the PA temperature? And how are the fans set in the CONFIG menu. Bob, K4TAX Sent from my iPhone > On Jan 6, 2020, at 12:15 AM, Eric Rosenberg > wrote: > > In the middle of the ARRL 160 contest, my K3 stopped putting out any RF. No > explanation that I can think of... all of

Re: [Elecraft] K3 output power failure.

Alternatively, you might (if you feel comfortable doing so) open the unit up and inspect it for any foreign debris that may have made its way into the case, thus challenging the airflow design/volume/velocity. The PA is in its own shielded enclosure, and thus relies heavily upon the fans to

Re: [Elecraft] K3 output power failure.

Eric Rosenberg writes: Everything seemed fine until this weekend's ARRL RTTY Roundup. After being on the air for about 4 hours, once again there no was RF output Eric, Sounds like an over temperature problem. Especially if running RTTY at near full power. The high duty cycle of RTTY can

[Elecraft] K3 output power failure.

In the middle of the ARRL 160 contest, my K3 stopped putting out any RF. No explanation that I can think of... all of a sudden, ZERO watts out when the radio was keyed, either by software (N1MM+ or WSJT-X) or pressing the TUNE button. The TX LED was lit, the meter showed audio, which I could

Re: [Elecraft] K3 output power falls

alf of K9SW > <k...@comcast.net> > Sent: Wednesday, November 9, 2016 11:49 PM > To: Elecraft Elecraft > Subject: [Elecraft] K3 output power falls > > Maximum power output on my K3 dropped to 12 watts, for no discernible reason. > Any handy hints about what might

Re: [Elecraft] K3 output power falls

To: Elecraft Elecraft Subject: [Elecraft] K3 output power falls Maximum power output on my K3 dropped to 12 watts, for no discernible reason. Any handy hints about what might cause this? I haven't yet taken it apart to check voltages

[Elecraft] K3 output power falls

Maximum power output on my K3 dropped to 12 watts, for no discernible reason. Any handy hints about what might cause this? I haven’t yet taken it apart to check voltages, etc. Dave __ Elecraft mailing list Home:

Re: [Elecraft] K3 output power spikes

On Tue,3/1/2016 12:54 PM, Bill Frantz wrote: I have not noticed any RF noise on receive when I put it into "always on" mode. Hi Bill, This is quite interesting to me. I run SO2R, so I would be concerned about noise in the second radio while transmitting on the first. Do you have a way to

Re: [Elecraft] K3 output power spikes

FWIW, I power my barefoot K3 with batteries and a solar charger. After our club county expedition for the California QSO Party (CQP) last year, I had a new appreciation for the way low power supply voltage could make a clean transmitter dirty. To address this problem at home, I got a N8XJK

Re: [Elecraft] K3 output power spikes

> From: "David via Elecraft" <elecraft@mailman.qth.net> > To: elecraft@mailman.qth.net > Sent: 3/1/2016 5:40:46 AM > Subject: Re: [Elecraft] K3 output power spikes > >> My K3 s/n 4487 has exhibited similar behaviour since I built it in 2010. >> Des

Re: [Elecraft] K3 output power spikes

For what it's worth, I've found over the years that battery power is less innocent than you'd think when powering electronics. Especially on a tired or cheap battery with a high internal resistance - those can drop a surprising amount of voltage under load with unexpected timing, etc. even when

[Elecraft] K3 output power spikes

Power supply stability. Built cheep, get worse with time, insufficient heat dissipation due to endless complaints about fan noise, cut corners on components, too small wire to rig, yada, yada, ad nauseum. Power supply issues can cause rig overheating, spikes, slow power build up, unstable power

Re: [Elecraft] K3 output power spikes

I thought that one of the features of the K3/K3s was that it was able to run, and run well, off of batteries. These power spikes makes it sound like that is not the case? Or am I missing something? Batteries start out at 12.6v and go down from there. The K3/K3s needs to run well down to

Re: [Elecraft] K3 output power spikes

Bill, Is there any way that you can increase the power supply voltage to 13.0 volts or more during transmit? If so, that should help. Most of my experience with power control is with the K2 which starts out at lower than the requested power after a band change or a change in power level, but

Re: [Elecraft] K3 output power spikes

Not to worry, my K3S does it too :-( On Mar 1, 2016, at 8:12 AM, Bill Hammond via Elecraft wrote: > Hi John, > My power dances all over the place (my serial number is 00069). Just had a > quick QSO with the KPA500 indicating 560 watts at the beginning and then >

Re: [Elecraft] K3 output power spikes

, thanks for posting this David. Jim - W0EB Park City, KS -- Original Message -- From: "David via Elecraft" <elecraft@mailman.qth.net> To: elecraft@mailman.qth.net Sent: 3/1/2016 5:40:46 AM Subject: Re: [Elecraft] K3 output power spikes My K3 s/n 4487 has exhibited similar b

Re: [Elecraft] K3 output power spikes

Hi John, My power dances all over the place (my serial number is 00069). Just had a quick QSO with the KPA500 indicating 560 watts at the beginning and then going down to 480 at the end. That is typical. My 12 volt supply drops to 12.2 on transmit, 13.3 on receive. I have a long 12 volt

Re: [Elecraft] K3 output power spikes

I've noticed that the first time I TX with my KPA500 it will fault. Seems to settle down after that. May also spoke after band change. Sent from my iPhone ...nr4c. bill > On Mar 1, 2016, at 12:23 AM, Vic Rosenthal wrote: > > Hi john, > I think I've seen this myself. I

Re: [Elecraft] K3 output power spikes

My K3 s/n 4487 has exhibited similar behaviour since I built it in 2010. Despite calls to Elecraft Support no solution was found despite Gary talking me through various items until a month or so ago when the spike was causing problems with my amp on 24 Mhz. It was mentioned that the K3 must see

Re: [Elecraft] K3 output power spikes

Hi john, I think I've seen this myself. I would redo the power calibration with the K3 utility and a good dummy load. I'm interested in hearing people's responses to your question. Vic 4X6GP > On 29 Feb 2016, at 10:24 PM, John K1JD wrote: > > Hi All, > My K3 SN #071 was

[Elecraft] K3 output power spikes

Hi All, My K3 SN #071 was purchased new November 2007. It’s had a few mods/upgrades along the way and its firmware is current. Last Field Day 2015 at W5YA, the K3’s LPA failed after a close lightning strike. I was able to successfully repair the LPA replacing both discrete and SMD components.

[Elecraft] K3 output increases running PACTOR

I recently began playing with PACTOR. I notice that I adjust the power and mic gain to yield about 50 Watts and the output increases to75 Watts or more in a minuteor so. I set power to 95 Watts in CW, then switch to USB and increase mic gain to yield 50 Watts, in order to avoid audio

Re: [Elecraft] K3 output increases running PACTOR

I set power to 95 Watts in CW, then switch to USB and increase mic gain to yield 50 Watts, in order to avoid audio distortion. Absolutely backward with the K3. As documented time and time again, set the power to the desired level (e.g., if you want 50W set it for 50W) and adjust the mic gain

Re: [Elecraft] K3 output increases running PACTOR

Red, The K3 is not like other rigs which tell you to adjust the audio level to control the power output. If you attempt that with the K3 (or KX3 or K2) you will experience power hunting as you describe. Follow the instructions in the manual for DATA modes. Use DATA A submode and adjust

[Elecraft] K3 - Output Power Bar Graph issue?

I hadn't used my K3 (#474) for a few days when I checked into the Elecraft SSB net on Sunday. I immediately noticed that the Power Out bar graph was peaking only around 60-70W. It normally peaked closer to full output on voice peaks. Later I checked it with CW and it was still only hitting

Re: [Elecraft] K3 - Output Power Bar Graph issue?

You might calibrate the TX Gain. But it should not have changed this quickly. Odd. Others will have advice too. 73, matt W6NIA On Tue, 02 Jul 2013 15:03:59 -0500, you wrote: I hadn't used my K3 (#474) for a few days when I checked into the Elecraft SSB net on Sunday. I immediately

[Elecraft] K3 output stage high SWR - fault-finding?

Hi guys, I have a problem with my K3 reading 5.0:1 or more SWR on tune into a 50 ohm load. I was alerted to this problem when I could not get the same SWR my analyser was showing for a new antenna, and quickly discovered the K3 had developed a fault on all bands. The K3 shows a high SWR into a

Re: [Elecraft] K3 output stage high SWR - fault-finding?

The K3 shows a high SWR into a pure 50 ohm load or resonant antenna on both Ant 1 or Ant 2. I find that if I use an external SWR meter and connect the K3 to a dummy load through that, the SWR shows high on both the K3 and the SWR meter. An external SWR meter can not show a fault with the

Re: [Elecraft] K3 output stage high SWR - fault-finding?

Michael, Make sure the K3 ATU is in bypass mode, and check the SWR into your dummy load. It sounds to me as if you have the ATU in line when you are making this measurement. GL, Bruce, N1RX The K3 shows a high SWR into a pure 50 ohm load or resonant antenna on both Ant 1 or Ant 2.

Re: [Elecraft] K3 output stage high SWR - fault-finding?

Hi Joe, Bruce, Make sure the K3 ATU is in bypass mode Thanks for the tip. I had the same doubts but double checked for this. The ATU is bypassed. How have you checked the dummy load and patch lead? What convinces you that they are good? The usual stuff - continuity checks on the patch

Re: [Elecraft] K3 output stage high SWR - fault-finding?

The nose knows... follow the smoke. Glad you found something. GL with the repair. -Bruce, N1RX I can see that T4 (hidden under P70 to the ATU board) has been scorched. The laminations have burned away on the windings and I can see a burn on the primary turn inside. :-(

Re: [Elecraft] K3 output stage high SWR - fault-finding?

Michael, Thanks Joe. I am exploring the K3 main board in a bit more detail and think I have a smoking gun; I can see that T4 (hidden under P70 to the ATU board) has been scorched. The laminations have burned away on the windings and I can see a burn on the primary turn inside. :-( T4 looks

Re: [Elecraft] K3 output stage high SWR - fault-finding?

Hi Joe, I agree, and I can't understand why the external SWR reading is also wrong. Once I have reassembled the K3 I will do some more tests to see if I can get further with that anomaly. Many thanks to you and Bruce for you input. Best wishes Michael G7VJR -- View this message in context:

[Elecraft] K3: output power low only on 17m SSB!!

I'm hoping someone else has experienced this, because it's too weird for me to figure out. When I QSY to 17m phone and begin to speak into the mic, I get very low output power. The only way I can get to full output is to switch to CW and begin transmitting, during which I see the output power

[Elecraft] K3 output in the 8 - 13(?) watt range

There have been several recent messages relating to the K3's power output in the power range where the radio switches between the exciter and the PA with no change in power output. ... sort of a flat spot. (;-) I wasn't very interested at the time and have deleted them. If anyone has them,

Re: [Elecraft] K3 output buffer modification

Message- From: James Sarte [mailto:k2qi@gmail.com] Sent: Wednesday, January 06, 2010 5:59 PM To: d...@w3fpr.com Cc: 'Elecraft' Subject: Re: [Elecraft] K3 output buffer modification Hi Don, I don't have anything that sensitive, so that's out. Perhaps I can borrow a spectrum analyzer from

Re: [Elecraft] K3 output buffer modification

' Subject: Re: [Elecraft] K3 output buffer modification Hi Don, I don't have anything that sensitive, so that's out. Perhaps I can borrow a spectrum analyzer from someone near me... or just wait for the P3 to come out. That's the only reason I performed the mod in the first place. BTW

Re: [Elecraft] K3 output buffer modification

; d...@w3fpr.com Subject: Re: [Elecraft] K3 output buffer modification GreAt question! 73 John WD1V Sent from my iPhone On Jan 7, 2010, at 11:16 AM, Terry Schieler terry.schie...@wirelessusa.com wrote: Did something change or am I misunderstanding Jim's post here. I thought

Re: [Elecraft] K3 output buffer modification

: Thursday, January 07, 2010 11:17 AM To: 'James Sarte'; d...@w3fpr.com Cc: 'Elecraft' Subject: RE: [Elecraft] K3 output buffer modification Did something change or am I misunderstanding Jim's post here. I thought that the IF Output Buffer Mod would not be necessary with the P3. If one does

Re: [Elecraft] K3 output buffer modification

, 2010 11:17 AM To: 'James Sarte'; d...@w3fpr.com Cc: 'Elecraft' Subject: RE: [Elecraft] K3 output buffer modification Did something change or am I misunderstanding Jim's post here. I thought that the IF Output Buffer Mod would not be necessary with the P3. If one does the IF buffer mod

[Elecraft] K3 output buffer modification‏

I have a K3 that has the higher gain IF output (#3460). I follow the IF output with the Cliffton Labs buffer and then a SoftRock SDR for a panadaptor. I use Rocky SDR software by VE3NEA for my weak signal panadapter. Power SDR for non weak sig conditions. (mostly HF) Since my interest is

[Elecraft] K3 output buffer modification

Hello group, Just finished installing the K3 output buffer modification this afternoon. I used the SMD resistor, and not the leaded part. Anyway, the most difficult aspect was soldering the replacement back on and ensuring it didn't move. I think I was successful. I may have chipped a tiny

Re: [Elecraft] K3 output buffer modification

If you have a second receiver, you could connect it to the K3 IF output. Tune the second receiver to 8.215 MHz and you should hear whatever the K3 is hearing at a similar signal level. (About an S-unit lower with the K3 preamp off, one S-unit higher with preamp on.) Alan N1AL On Wed,

Re: [Elecraft] K3 output buffer modification

Hi Alan, Unfortunately, I do not have a second receiver. Is there a way I can test output voltages with my meter - anything at all to just confirm that the resistor is indeed working? Anyway, the rig passed the smoke test upon turning on so that's a good start right there. James K2QI On Wed,

Re: [Elecraft] K3 output buffer modification

Unfortunately you won't be able to measure an RF signal at the IF output connector with a meter or oscilloscope unless you have a REALLY strong signal at the K3 antenna input. As a general sanity check, you could do a DC voltage measurement on the JFET just to make sure it is still drawing

Re: [Elecraft] K3 output buffer modification

...@elecraft.com] Sent: Wednesday, January 06, 2010 4:44 PM To: James Sarte Cc: Elecraft Subject: Re: [Elecraft] K3 output buffer modification Unfortunately you won't be able to measure an RF signal at the IF output connector with a meter or oscilloscope unless you have a REALLY strong signal at the K3

Re: [Elecraft] K3 output buffer modification

James, What do you propose to measure a 50 uV signal with? If you have equipment that will measure levels that low, then well and good, but if you are expecting to see it on an oscilloscope or RF Probe, you may as well forget it. Recall that 50 uV is an S-9 level, and is -73 dBm which is a

Re: [Elecraft] K3 output buffer modification

tonight. Cheers! James K2QI -Original Message- From: Don Wilhelm [mailto:w3...@embarqmail.com] Sent: Wednesday, January 06, 2010 6:37 PM To: James Sarte Cc: 'Elecraft' Subject: Re: [Elecraft] K3 output buffer modification James, What do you propose to measure a 50 uV signal with? If you

[Elecraft] K3 Output Buffer Mod Kit

I installed the K3IOBUFFKT in both of my K3s yesterday. I removed the 1K SMD chip very easily with two soldering irons. I don't think it is absolutely necessary to use two irons, however. Like another person said, I used a small jewelers screwdriver to hold down the new chip while tacking

[Elecraft] K3 Output Power Question

Hello Elecrafters,   I would like to know how stable the output power of the 10 watt K3 is when set to true QRP levels.    I'm asking because my K2 power setting is not very accurate when I try to set it to anything much less than 5 watts.   Would it be possible to safely drive an external

Re: [Elecraft] K3 Output Power Question

: [Elecraft] K3 Output Power Question To: Elecraft@mailman.qth.net Date: Tuesday, May 19, 2009, 12:41 PM Hello Elecrafters,   I would like to know how stable the output power of the 10 watt K3 is when set to true QRP levels.    I'm asking because my K2 power setting is not very accurate when I

Re: [Elecraft] K3 Output Power Question

amp. Plus, having a clearly resistive load might contribute to greater power output stability for the K3. Good luck and 73 Bob N6WG - Original Message - From: Bill Miner w...@yahoo.com To: Elecraft@mailman.qth.net Sent: Tuesday, May 19, 2009 12:41 PM Subject: [Elecraft] K3 Output Power

[Elecraft] K3 Output

After 5 months use my K3 has developed an output problem. The output varies on tune or key down. If it is set on 100 watts, say on 20 meters, the out put will start at 65 watts. It then goes up to 110 and settles at 100 watts. All this is in a span of about two seconds. It does the same at five

Re: [Elecraft] K3 Output

Ric Porter wrote: After 5 months use my K3 has developed an output problem. The output varies on tune or key down. If it is set on 100 watts, say on 20 meters, the out put will start at 65 watts. It then goes up to 110 and settles at 100 watts. All this is in a span of about two seconds. It

Re: [Elecraft] K3 Output

like another reason not to actually hook it up to the amplifier. 73, Erik K7TV - Original Message - From: Ric Porter r...@comporium.net To: Elecraft@mailman.qth.net Sent: Monday, May 04, 2009 4:58 AM Subject: [Elecraft] K3 Output After 5 months use my K3 has developed an output problem

Re: [Elecraft] K3 Output

Basilier ebasil...@cox.net Subject: Re: [Elecraft] K3 Output To: Ric Porter r...@comporium.net, Elecraft@mailman.qth.net Date: Monday, May 4, 2009, 12:18 PM I have never noticed slow variations in output during normal operations on my K3. However, the other day I installed the external ALC mod

Re: [Elecraft] K3 Output power difference - more

Ken Kopp-3 wrote: Readings at the 5 and 50W level appear to be unchanged and correct on all bands. The +10-15 watt discrepancy appears (only) at the 100W level. I observed the same thing about a week ago just after I had performed a recalibration:

[Elecraft] K3 Output power difference

I recently loaded beta ver. 2.80 and all seems well -except- there now appears to be a power output vs. power indicated difference of about 10W on all bands, including 6M. Setting the radio at 100W on the display delivers 110-115 watts output as indicated on two Bird wattmeters that I have

Re: [Elecraft] K3 Output power difference

, 2009 10:41 PM To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Output power difference I recently loaded beta ver. 2.80 and all seems well -except- there now appears to be a power output vs. power indicated difference of about 10W on all bands, including 6M. Setting the radio at 100W

RE: [Elecraft] K3: Output power on PSK31 and AFSK

Thanks to everyone for the information on setting up the K3 for digital modes. My low power problem was solved by running TX gain calibration and by setting the LINE IN gain for a couple of bars on the ALC indicator. Also, I finally realized that most wattmeters will indicate half the actual power

Re: [Elecraft] K3: Output power on PSK31 and AFSK

Jerry, The Behringer 802 mixer is inexpensive and will do that for you (plus a lot of other stuff) Feed each receiver's audio into the Line IN jack below the microphone jacks. The PAN control will be used to adjust the amount of blend you want. In addition you will have level controls for

[Elecraft] K3: Output power on PSK31 and AFSK

I am running beta 2.63/1.95 firmware. Although power output is normal in CW, USB and LSB modes (setting SSB to operate with several bars of ALC), I can only get about 10-20W out on PSK31 and 50-60W out on AFSK before ALC kicks in. This is the case whether I use LINE IN or FP/RP MIC connections for

Re: [Elecraft] K3: Output power on PSK31 and AFSK

Hi Jerry, The setup for the K3 in PSK31 is quite different from the way you set up most other radios. See http://n2.nabble.com/K3-Transmit-IMD-td466326.html#a466329 for an explanation. There was a discussion about this just over a month ago on this reflector, as a result of which I personally

Re: [Elecraft] K3: Output power on PSK31 and AFSK

Jerry, I am confused about your saying before ALC kicks in, and it makes me wonder if you are using enough audio gain. The latest recommendation from Lyle is to increase the line-in gain (or the soundcard gain) until you have 4 to 5 bars indicated on the 'ALC' bargraph. At that level, Lyle

[Elecraft] K3 Output Power Unstable

I thought this was corrected in a previous firmware upgrade. This apparently is not the case. Output power still varies in the SSB mode by as much as 50%. This shows up on the K3 ALC display and the power output display. Roy Morris W4WFB ___

[Elecraft] K3 output power unstable

Bjorn, I notice the same thing with my K3 S/N 775, V2.38. For me, the problem appears to be in SSB mode, and not CW. For example, if I adjust the power output of my K3 by a very small amount i.e. say from 50w to 52w output, it will initially transmit much more power than 52w – driving my

Re: [Elecraft] K3 output power unstable

I notice the same thing with my K3 S/N 775, V2.38. I haven't had a chance to test the newest firmware yet, but I have seen somewhat similar ALC behaviour in various versions of the K3 firmware and have heard several times that Elecraft is working on fixing it. I do wonder to what extent

Re: [Elecraft] K3 output power unstable

hello the same probleme here K3 S/N 153 in ssb mode with the amplifier EMTRON DX2SP the security overdrive 73 terry F5MOO Kamal Sirageldin a écrit : Bjorn, I notice the same thing with my K3 S/N 775, V2.38. For me, the problem appears to be in SSB mode, and not CW. For example, if I

RE: [Elecraft] K3 output power unstable

] K3 output power unstable hello the same probleme here K3 S/N 153 in ssb mode with the amplifier EMTRON DX2SP the security overdrive 73 terry F5MOO Kamal Sirageldin a écrit : Bjorn, I notice the same thing with my K3 S/N 775, V2.38. For me, the problem appears to be in SSB mode, and not CW

RE: [Elecraft] K3 output power unstable

@mailman.qth.net Subject: RE: [Elecraft] K3 output power unstable Hi I´m using the same ACOM 2000 and the same think is happening here 73 Oms PY5EG -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of f5moo Sent: Monday, September 22, 2008 11:11 AM To: Kamal

Re: [Elecraft] K3 output power unstable

dj7mgq wrote: I notice the same thing with my K3 S/N 775, V2.38. Or could other gremlins be at work, e.g. poor TX firmwarwe alignment at 1mW, 5W and 50W? Faulty internal power and/or SWR measurements? etc. Toby, Interesting your speculation about firmware alignment - I can do

Re: [Elecraft] K3 output power unstable

Stewart, Thanks for your responce to my question. The problem is on 80 meters, other bands seems fine. When letting my K3 cool over dinner to about 30C output it became stable again. Working the temp up a few degrees is enough to make it go wild again. Giving the box a gentle knock on the cabinet

[Elecraft] K3 output power unstable

I am right now in the middle of the SAC contest when I notice that the K3 has a problems keeping output power stable. I noticed some excessive high output from the amp when investigating I found that my K3 set to drive the amp with between 20-30 watt output depending on band, delivers

Re: [Elecraft] K3 output power unstable

Bjorn wrote: I am right now in the middle of the SAC contest when I notice that the K3 has a problems keeping output power stable. I noticed some excessive high output from the amp when investigating I found that my K3 set to drive the amp with between 20-30 watt output depending on band,

[Elecraft] K3 Output Isolation

I just installed a new direct feedline on my 6m Yagi and hooking it up to Antenna 2. When I tested it I was horrified when I saw infinity SWR on my W1 power meter. Then I realized the watt meter was not in the 6m feedline and the rig was happily displaying a 1:1 SWR. Hmm, that means there is

RE: [Elecraft] K3 Output Isolation

, including a dummy load and an open. No movement. Just a data point... 73 Bud N7CW -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Tom Childers, N5GE Sent: Saturday, July 19, 2008 10:49 AM To: Elecraft Discussion List Subject: [Elecraft] K3 Output Isolation I

Re: [Elecraft] K3 Output Isolation

On Sat, 19 Jul 2008 11:30:34 -0700, Bud Semon N7CW [EMAIL PROTECTED] wrote: Tom, I have my 6M antenna on ANT 2 and whatever HF antenna on ANT 1 all the time. I have never seen the HF wattmeter even wiggle. The lowest power scale I have on the power meter is 100 Watts, though. I just ran a

Re: [Elecraft] K3 Output Isolation

- Original Message - From: Tom Childers, N5GE [EMAIL PROTECTED] To: Elecraft Discussion List elecraft@mailman.qth.net Sent: Saturday, July 19, 2008 10:48 AM Subject: [Elecraft] K3 Output Isolation I just installed a new direct feedline on my 6m Yagi and hooking it up to Antenna 2

[Elecraft] K3 - Output power instability?

Whilst transmitting today on CW (QSK) at full power, I've noticed on a couple of occasions the power meter showing a fairly sudden drop in power to around 45 or so watts. It gradually returns to full power and then will behave normally for long periods. Each time this has happened the radio

Re: [Elecraft] K3 - Output power instability?

Stewart, Do you have the latest firmware loaded? As I recall, there were some changes to the power controls in the latest release which address that very problem. If you have the latest, then try the next release. 73, Don W3FPR Stewart Rolfe wrote: Whilst transmitting today on CW (QSK) at

[Elecraft] K3 Output levels

Hi, I asked this question here before but no one anawered it. Maybe it was considered a dumb question. Can the power output level of the K3/100 be individually programmed for different bands? For example to accomodate a low drive level 6M amplifier. I doubt it but thought I would ask as I

Re: [Elecraft] K3 Output levels

Harry, You could develop a macro for this and use it in Command Mode with the K3 Utility. Command Mode is a very useful facility for this sort of thing. Currently, power level sticks across bands and you'd have to reset it by hand for 6m, or develop a standard set of macros to preset power

Re: [Elecraft] K3 Output levels

No at present, it just remembers the last power setting regardless of band 73 de M0XDF / K3 #174 On 23/02/2008 18:22, Harry Price [EMAIL PROTECTED] sent: Hi, I asked this question here before but no one anawered it. Maybe it was considered a dumb question. Can the power output level of