[Elecraft] Manual for pre 3000 S/N K2?

I recently bought a pre 3000 serial number K2 (S/N 2539) which is the older Rev A version. I am looking for a pdf of the K2 manual for these older units. The manual does not seem to be on the Elecraft web or ftp sites. Anyone know where I can get one? Steve N9SZ

Re: [Elecraft] K3 & K3S Options Last Time Buy Update (12/02/2022)

improvements? Steve N9SZ On Fri, Apr 14, 2023 at 10:34 AM Steve Zabarnick wrote: > After just about two years from my original order, I finally received the > upgraded K3 synthesis board (KSYN3AUPGD). Installation will take place this > weekend and I'm hoping for the best. >

Re: [Elecraft] K3 & K3S Options Last Time Buy Update (12/02/2022)

After just about two years from my original order, I finally received the upgraded K3 synthesis board (KSYN3AUPGD). Installation will take place this weekend and I'm hoping for the best. Steve N9SZ On Thu, Feb 2, 2023 at 9:47 AM Steve Zabarnick wrote: > It has been over 8 weeks since E

Re: [Elecraft] K3 & K3S Options Last Time Buy Update (12/02/2022)

It has been over 8 weeks since Eric announced that most of the long delayed K3 options would be available in 6 to 8 weeks, and "should ship close to these dates ranges if there are no new parts issues or surprise manufacturing delays." I have been patiently waiting for the upgraded synthesizer

[Elecraft] K3 Utility saving macros to PC

I recently upgraded my ham radio computer, which required re-installation of the K3 Utility. Previously, my macros appeared to be saved to the computer, as they would appear in "edit macros" in the "command tester". With this new install, the macros no longer show when starting the utility,

[Elecraft] KX3 receive dead

Failure of an external amplifier has killed the receive on my KX3 (transmitter and ATU seem to work fine). Does anyone know which components are most likely to fail in the KX3 receiver front end? Looking at the schematic, it appears that TR switch components D3 and Q2 are the first active devices

[Elecraft] KX3 sideband cancellation calibration

I recently noticed that I could hear the opposite sideband on my KX3. As a result I tried using my XG1 to do the sideband cancellation calibration described in the KXFL3 manual. During the calibration I could significantly reduce the sideband so that it could no longer be heard by ear. But, once I

Re: [Elecraft] KX3-2M TO-220 Retainer and Nylon Screw

*I also have a KX3 that does not use the TO-220 retainer.* *This is SN 2829. * *Steve N9SZ* *>Subject:[Elecraft] KX3-2M TO-220 Retainer and Nylon Screw >From: AL7CR > >Date: 2020-07-20 3:37:22

Re: [Elecraft] KX3 keyline questions

I ended up replacing Q5, the keyline output transistor on the KX3 RF board. It had a hole in it and apparently the magic smoke had come out. Keyline is now working. This KX3 was purchased used and I had never used an amp or the keyline. Steve N9SZ On Sat, Nov 21, 2020 at 8:13 PM Steve Zabarnick

Re: [Elecraft] KX3 keyline questions

? Ring is KEY OUT; tip is GPIO, a \ logic signal configurable in the ACC2 IO Menu entry. Wayne N6KR On Sat, Nov 21, 2020 at 4:12 PM Steve Zabarnick wrote: > I'm exploring using my KX3 with the QRP-Labs 50W Amplifier. In measuring > the keyline output, I get zero volts to ground when in r

[Elecraft] KX3 keyline questions

I'm exploring using my KX3 with the QRP-Labs 50W Amplifier. In measuring the keyline output, I get zero volts to ground when in receive and about 0.5 volts in transmit. When measuring resistance across the keyline I get about 70 ohms in receive and 5K ohms in transmit. Isn't the keyline supposed

[Elecraft] KX3 CWT and decode

I don't use CW decode on my KX3 and I noticed that CWT doesn't work correctly when decode is turned off. With decode on all is fine, but with decode off the middle CWT bar is always lit. A strong off frequency signal will sometimes move the CWT bar to the left or right but it is difficult to use

[Elecraft] SWR meter with KX3 2 Meter module

Is the SWR meter supposed to work when the 2 meter module is being used in the KX3? I don't see much of a response even with no antenna connected, which should show a very high SWR. My last post mistakenly asked about the K3. Steve N9SZ

[Elecraft] SWR meter with K3 2M module

Is the SWR meter supposed to work when the 2 meter module is being used in the K3? I don't see much of a response even with no antenna connected, which should show a very high SWR. Steve N9SZ __ Elecraft mailing list Home:

[Elecraft] W1SERKT vs KXSER cables

With the recent purchase of a KX3, I was wondering if my W1SERKT cable (W1 wattmeter serial data cable) will work in place of the KX3's KXSER cable? Both seem to be 3.5 mm TRS to DB9 serial cables. Steve N9SZ __ Elecraft mailing list

[Elecraft] Neogrip now available

At Dayton this past year, I asked Wayne about the availability of the K3S VFO A tuning knob for those of us with the K3. I was impressed with the improved feel of the K3S knob-- it felt heavier and of higher quality. He told me that the knob and encoder are identical but the rubber ring was

[Elecraft] K1 test signal generator oscillator

I recently built the small test oscillator circuit shown in the K1 manual. Using a 5 MHz crystal, my circuit built on a breadboard oscillates on the third overtone at 15 MHz, rather than the fundamental. Any suggestions as to why and how to modify the circuit to oscillate on the crystal's

Re: [Elecraft] P3 vs. other panadapter options

Actually the big advantage is the combined panadapter and second receiver that the LP-PAN/NaP3 combination gives. It can be challenging getting the full 2nd receiver capability working, but once you do it offers many of the capabilities (e.g., listening to VFO A and B simultaneously) that would

Re: [Elecraft] P3 vs. other panadapter options

l. > >73, Jim K9YC On Thu, Dec 24, 2015 at 2:04 PM, zabarnick . <zabarn...@gmail.com> wrote: > Actually the big advantage is the combined panadapter and second receiver > that the LP-PAN/NaP3 combination gives. > It can be challenging getting the full 2nd receiver capability wo

Re: [Elecraft] Crackling in Headphones

Could this be the AF limiter kicking in on loud signals? Check the "AF LIM" menu setting. Steve N9SZ On 30 Nov 2015 14:02, j...@kk9a.com wrote: > There are times that I have noticed a crackling sound in my headphones > with my K3S. This is not the normal band noise static that has depth, this >

[Elecraft] FS: KSYN3A synthesizer upgrade kit

I'll take it Jim. Steve N9SZ zabarnick at gmail dot com __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net This list hosted

[Elecraft] Replacement K1 speaker needed

Does anyone have a K1 speaker that they no longer need? This is the 2.5 inch speaker that is no longer used when the KBT1 battery option is installed. My speaker started buzzing and needs to be replaced. Please contact me off list: zabarnick at gmail.com Steve N9SZ

[Elecraft] F.S. or Trade KFL1-2 Filter board of K1 (20 and 15 meters)

I have a working, excellent conditions KFL1-2 K1 2 band filter board for 20 and 15 meters. I am interested in trading for a KAT1 or KFL1-2 with 30 and 17 meters. I am also willing to sell the board for $60 including shipping to CONUS. Please contact me off list Steve N9SZ zabarnick at gmail.com

[Elecraft] Trade DSW-II QRP transceivers for K1

. They are rated at 4 watts and both show 4.2 watts output (using an Elecraft W1 power meter) into a 50 ohm dummy load using a 13.8 volt power supply. These radios are very well regarded (see eham.net reviews) and no longer available. Please contact me off list for details and photos. Steve N9SZ zabarnick

Re: [Elecraft] zeroing K3 internal tuner

? Or is something more sinister afoot? Steve N9SZ On Tue, Feb 25, 2014 at 2:11 PM, zabarnick . zabarn...@gmail.com wrote: My K3 SWR meter no longer reads 1:1 into a 50 ohm dummy load or matched load. The lowest it will read is 1.2:1. Is there a calibration or zeroing I should redo? Steve N9SZ

[Elecraft] zeroing K3 internal tuner

My K3 SWR meter no longer reads 1:1 into a 50 ohm dummy load or matched load. The lowest it will read is 1.2:1. Is there a calibration or zeroing I should redo? Steve N9SZ __ Elecraft mailing list Home:

Re: [Elecraft] zeroing K3 internal tuner

attractive but inexpensive coax jumpers at a hamfest. I've since invested in better, as I'm testing antenna tuner firmware. 73 de Dick, K6KR -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of zabarnick . Sent: Tuesday, February

[Elecraft] K3 audio mods

I’m contemplating doing the K3 AF Output Mod (two 470 ohm resistors on the KIO3 board) on my Serial Number 1672 K3, but the recent discussions of one ohm resistors and a new audio mod make me wonder if I should wait. Is there any info on this new audio mod? Should I hold off on the 470 ohm

Re: [Elecraft] TCXO - 0.5PPM

Wayne, is the TCXO drift spec for the period after warmup, or does it include the warmup period? Steve N9SZ At present, method 3 remains unimplemented. Fortunately the TCXO's uncorrected drift is already less than +/- 0.5 PPM from 0 to 50 C. This was the target for method 3. 73, Wayne N6KR

[Elecraft] CWT and RF GAIN

I find the CWT indicator very useful as a manual tuning aid, for auto zero beating using SPOT, and for obtaining the proper decoding threshold for CW, PSK, and RTTY. I am also one who uses the RF GAIN control to minimize band noise and increase the S/N ratio of weak signals. Unfortunately,

Re: [Elecraft] Config:Wattmeter

This bug in the wattmeter calibration still exists in the latest firmware. Pressing XMIT during the wattmeter calibration does not transmit, and pressing TUNE does not permit a change of the calibration paramter. On the other hand keying the rig via a keyer does allow the calibration to be

[Elecraft] K3 mods

Yesterday I overcame my fears :-) and successfully performed the following mods on my K3 (S/N 1672): K3 AF Mod (Line out speaker) IF Output Buffer Gain Mod K3 Extreme Signal RX Protection Mod But, I was not able to perform the K3 AF Output Mod (two 470 ohm resistors on the KIO3 board). I

[Elecraft] K3 Retaining NR settings

Now that the K3 firmware is mature and the DSP noise reduction feature works extremely well, isn’t it time for the firmware to retain NR after power cycling? I’m not asking for memory of per band/mode NR settings (although that would be wonderful!), but NR users should not have to turn

[Elecraft] K3 A/B button problem

I'm seeing an intermittent problem with the A/B button on my K3. When I have VFO A and B set for different modes and frequencies, pressing the A/B button sometimes copies the frequency from VFO B to A after exchanging them, rather than exchanging them only (the mode is not copied). The problem

Re: [Elecraft] K3 A/B button problem

I found that the problem was caused by PowerSDR software running for my LP-PAN panadapter. Steve N9SZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post:

Re: [Elecraft] NR problem with the latest beta release

Jim: I can get rid of the tone upon turning on NR if I do any of the following: revert to v3.30 turn off switch tones use my FL2 filter (500 Hz) rather than my FL1 filter (2.7 kHz) and, of course, turning off NR Wayne had me try an EE init, which got rid of the tone, but it returned after a

Re: [Elecraft] k3 NB problem

I get a continuous tone when engaging NR, but it requires switch tones set to on and my FL1 filter to be engaged. Wayne has tried to help me find the cause without success yet. Steve N9SZ -Sinse installing the latest beta release I have a problem with a loud tone -when I engage the NB. Has

[Elecraft] (no subject)

This leads to the obvious follow-on suggest: Since the XG-2 signal generator is used to calibrate the RF gain and the S-meter, why not include the XG-2 generator as an internal feature of future versions of the K3 (or K4)? Steve N9SZ Brett Howard said: -So if someone has the 50uV

[Elecraft] V3.41 NR tone

I’d like someone with a similar K3 configuration to help me diagnose a problem by doing a test. Required K3 configuration: Filters- 2.7 kHz in FL1 and 500 kHz in FL2 KAT3 ATU KXV3 KPA3 100 watt amp V3.41 firmware In cw mode, set your filter width to greater than 500 Hz to engage the 2.7 kHz

Re: [Elecraft] K3 VFO Tuning Rates

On May 26, 2009 Wayne wrote: -This is referred to as ballistic tuning. We experimented with it but -rejected it when we did the K2 design. I haven't tried it on the K3 -yet, but I've added it to my list. - -73, -Wayne -N6KR Back in Jan 2008 there was a discussion of this on the reflector, and on

Re: [Elecraft] K3 Noise Reduction..revisited

Hmm, are Lyle's other irons in the fire being heated for Eric's other fish to fry? :-) More seriously, I also would love to see changes to the noise reduction, particularly to help with weak signal work. I'm not sure why anyone cares about noise reduction for strong signals -- I just turn down

Re: [Elecraft] Hot K3

Don: I had the same reaction upon first using my new K3 last year. The K3 is significantly more sensitive than my previous rig (IC-756 non-Pro), and as my noise environment is fairly high (inner suburb with ~110 dBm background noise), at first it seemed as if the K3 is fairly noisy. Also, while

Re: [Elecraft] Weird EMI issue... part deux

I was able to reproduce the noise that James is hearing on my #1672 K3. In my radio it never reaches S7, but I don't have the KBPF3 option. Here, the RIT and XIT settings do not affect the noise. It is mostly between 4.9 and 5.1 MHz as stated by W4TV. I never would have noticed this without

[Elecraft] Using USB mode for PSK31 rather than DATA A

After all this discussion of power control in DATA A mode vs SSB, I decided to try using PSK31 with USB mode, rather than DATA A. I changed the MIC SEL menu item to Line IN and adjusted the ALC meter to 4-5 bars using the MIC GAIN control. The PSK31 power output appeared to closely match the K3

Re: [Elecraft] Sub Receiver jones...

Another solution is to get an LP-PAN panadapter. This gives a great panadapter plus two PowerSDR receivers. This weekend I was able to monitor K5D on the K3 and/or the primary PowerSDR receiver and listen to (and watch) the pileup on the PowerSDR subreceiver. PowerSDR allows you to put the pileup

Re: [Elecraft] Using USB mode for PSK31 rather than DATA A

No I did not turn off compression. I will give this a try. Has anyone else tried using PSK31 with USB mode? Did you turn compression off? Bob NW8L On Mon, Feb 16, 2009 at 12:12 PM, steven.zabarn...@notes.udayton.edu wrote: After all this discussion of power control in DATA A mode vs SSB, I

Re: [Elecraft] K3 Beta firmware rev. 2.82

I discovered that my cw power issue was due to a bad power supply for my Elecraft W1 wattmeter. My cw power measurement now agrees with the K3 setting. I still see a 50% higher power output in Data A mode than the K3 setting -- this is an improvement over the nearly 100% that I was seeing using

Re: [Elecraft] K3 Beta firmware rev. 2.82

I installed the new beta last and tested the new output power control. I don't see any improvement in PSK31 output power using DATA A mode. I still get nearly twice the output power than I have dialed in by the PWR knob. In the previous firmware, the measure output power in CW modes agreed with

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] Using K3's Pre-amp

Is Dave's S4 background band noise level unusual or should this be considered normal? In my first tier suburban location I typically see S2 to S3 background noise on the 20 to 40 meter bands using cw receive bandwidths of 500 KKz. The first figure and table in the following link

[Elecraft] Re: K3 drift

slowly downward towards the original power up frequency. This was for a cold K3 in my 52F basement shack. I calculate a drift of 3.6 ppm which is within the spec of the 5 ppm TCXO. Steve N9SZ -Steven Zabarnick/Research/FacStaff/UDayton wrote: - To: elecraft@mailman.qth.net From: Steven

[Elecraft] K3 drift

During the past week I have noticed my K3 drifting during the first 20 seconds after power up. I hadn’t noticed this previously in my three month old K3 (SN 1672), so I’m wondering if this is normal? With winter here it is colder in my basement shack (maybe down 55 F), so perhaps that could

[Elecraft] K3 S meter and AGC on/off

One unique feature of the K3 is that the S meter operates even when AGC is turned off. Lately I've taken to operating often with AGC off to maximize weak signal performance (using the RF gain to control volume), but have noted that the S meter reading is a strong function of whether AGC is on or

[Elecraft] [K3] AGC THR and noise

I'm somewhat puzzled by the behavior of the AGC THR adjustment with respect to band noise. My understanding is that the AGC THR setting adjusts the level at which the AGC is activated. Thus, I would expect when listening to band noise (QRN) that if the noise is activating the AGC, using a higher

[Elecraft] Re: Help with distorted transmit audio

Jack's measurements of the K3 AGC on the link listed below are quite interesting. As my noise level on the low bands is usually at least S3 or 4, his plots indicate that the noise (S3 is approx -90 dBm) is either in the linear range of the AGC, or just barely in the software AGC range. Don't we

[Elecraft] Re:[K3] AGC THR and noise

Oops, mistakenly sent this with the wrong subject line. Jack's measurements of the K3 AGC on the link listed below are quite interesting. As my noise level on the low bands is usually at least S3 or 4, his plots indicate that the noise (S3 is approx -90 dBm) is either in the linear range of the

[Elecraft] Re: Help with distorted transmit audio

I experienced this pinched audio problem this weekend. Using the current beta firmware, I noted severely pinched transmit audio (using the transmit monitor). It occurred on some bands but not all, and was present sometimes on only one of the sidebands (i.e., when switching sidebands the audio

Re: [Elecraft] K3- How Robust iis the Tuner?

Maybe it needs to be more robust? Last week I was attempting to tune a short ladderline fed (via a balun) doublet on 80 meters using the KAT3. The tuner successfully tuned the system for the cw part of the band, but had trouble on 75 meters. I tried retuning a few times, and noted smoke and a

[Elecraft] KAT3 settings saved per band

I use two doublet antennas, one hooked to ANT1 through a balun for 40M which uses the KAT3 tuner, and a second (ANT2) in which I bypass the KAT3 and use an external Palstar BT1500A balanced tuner for 30-10M. Currently, when changing bands I have to remember to bypass/set the KAT3 correctly. I

[Elecraft] Chaining CW memory messages

A previous reflector post described problems with chaining messages when using the K3 internal keyer memories (M1-M4). I have also observed this problem -- when tapping a memory to chain a message while a message is already playing, sometimes the playing message is interrupted. I can usually get