Re: [Elecraft] Is the Krx3 plus Ksyn3a compatible with a K3s?????

Paul, The combo of the KRX3 and K3S is not a problem. There is an added capacitor for the KRX3A to increase the low frequency sensitivity (by reducing the noise component) - Important to those who want to use the KRX3 for VLF operation. I believe the instructions for modding the KRX3 to the

Re: [Elecraft] K2 Only 30-metre Band Works

Jerry, I have had only marginal success with the Soldapullt, but I have a Hakko 808 that works very well - with the correct tip it does the job nicely - it heats and then you pull the trigger to extract the solder.  Not inexpensive, but when I was doing repairs on a daily basis, it was a

Re: [Elecraft] K3 on wsjt-x

Doug, You have had suggestions on this reflector on how to get in DATA A mode. As far as audio levels are concerned, I have an article on my website www.w3fpr.com that may be helpful. Scroll the left column to the last entry and click to open the document. Bottom line is that you must have 4

Re: [Elecraft] K2 Only 30-metre Band Works

Murray, Yes, Elecraft has those relays. If you do not have adequate desoldering gear, the the best way to remove them is to crush the case so you can remove the pins one at a time.  Clean up with solder wick and if solder remains in the holes, push it out with a wooden toothpick.  Use

Re: [Elecraft] FTDI driver on Win10

I would advise you to download and install the latest FTDI drivers from the FTDI website. My understanding is that Win 10 does no longer include the FTDI drivers. 73, Don W3FPR On 7/2/2021 10:03 PM, Mike Dodd wrote: My K3s, KPA500, and KAT500 are connected to my Win 8.1 Pro PC, and everything

Re: [Elecraft] K2 Only 30-metre Band Works

Murray, The 7.6 volts on the 8 volt power rail is not a problem. The relays operate on 5 volts output from U1. It is possible that the relays have developed oxidation - if there is any damage to the relay case.  Otherwise, the relay contacts should be good - they are good for more than 100k

Re: [Elecraft] K2 Main Tuning knob spinner?

Frank, That sounds like the 'finger dimple' from Elecraft.  I don't know if they are still available. If you have the piece that fell off, glue it back on - I used E6000 adhesive with great success. 73, Don W3FPR On 7/2/2021 3:13 PM, Frank Krozel wrote: I ended up with a few K2’s and one

Re: [Elecraft] K2 Only 30-metre Band Works

I would suggest that since 30 meters is working OK, the K2 is capable of both transmit and receive. Furthermore, I would expect the problem to be in the bandpass filter tuning. Be certain to follow the band order for tuning, otherwise you will be chasing your tail. Use the RP Probe (provided

Re: [Elecraft] K2 CW Crystals

Jerry, It is almost that simple.  Unsolder the old X5 thru X11 and put the new ones in.  For best results, solder ground wires on both sides of the crystal can near the bottom of the crystals.  That is quite possible because there are grounding holes on both sides of crystals X7 thru X11 -

Re: [Elecraft] Gentlemen, we have SSB! ( I think )

Jerry, Yes, there is a bit of compromise between LSB and USB on the carrier null, but it should not be much.  Settle for a compromise position. 73, Don W3FPR On 6/30/2021 10:06 PM, jerry wrote: So I got up at 5:30 this morning and continued stuffing the SSB adapter card. Finished it up this

Re: [Elecraft] KXUSB

Paul, I have not looked at the KXSER cable in the amp manual, but I am assuming it is the same as that shown in the back of the XG3 manual.  You can download that manual to check - I know that one works. I run only Windows - tried Linux some time ago and while it worked OK for an isolated

Re: [Elecraft] KXUSB

Paul, Is the FTDI adapter identifying as a COM port when it is plugged in?  You can check using Device Manager - open Ports and unplug the adapter - which COM port goes away?  Then plug it back in and observe which COM port is assigned. Windows no longer adds the FTDI drivers, you must

Re: [Elecraft] K2 / ESD / Diodes D16 7 D17 replaced

Those NE-2s have a high breakdown level.  OK for vacuum tube equipment, but too high for semi-conductors. 73, Don W3FPR On 6/29/2021 2:16 PM, Ray wrote: In the Early days we used a NE-2 for  front end Protection….. Ray WA6VAB  K3 *From: *Frank Krozel *Sent:

Re: [Elecraft] K2 / ESD / Diodes D16 7 D17 replaced

Frank, Yes, you still need to disconnect.  The polyphasers protect against large spikes, but smaller ones get through. 73, Don W3FPR On 6/29/2021 11:10 AM, Frank Krozel wrote: Folks after Field day with another manufacturer’s radio, I have a new to me K2/100 coming in two days to use as my

Re: [Elecraft] FAA-Approved Antenna authorized by HOA

If he is close to an airfield (of any type), then there are height restrictions - but if you can assure the powers that be that your antenna is not higher than trees or other objects in the vicinity, you can get FAA approval. 73, Don W3FPR On 6/28/2021 7:06 PM, John Marvin wrote: Note, I

Re: [Elecraft] K2 BFO

s :).  A quick tweak of the trimmer cap got it to 10. ( however many zeros ).    This is just a temporary bodge, because I also have a TCXO on order, will have to do that again too. - Jerry KF6VB On 2021-06-28 10:39, Don Wilhelm wrote: Jerry, That GPSDO will

Re: [Elecraft] K2 BFO

Jerry, That GPSDO will be good for setting the dial calibration, but WWV is better since it transmits AM at a fixed frequency. Instructions for doing a good dial calibration are on my website www.w3fpr.com.  It explains the entire procedure. Use SSB when doing the dial calibration because

Re: [Elecraft] K2 BFO

Jerry, Yes, you need to have the counter probe plugged into TP2 to save thee BFO frequency. You can build your own probe - if you use #14 solid wire, it will fit nicely into the test points. Solder the 11pF right above the tip and coax up to the header on the Control Board - the shield goes

Re: [Elecraft] A K2 with a short-term memory problem

the power switch to power down, or just remove power from the input line?I heard that doing it by jerking the rug out from under the supply is a Bad Thing. On Jun 27, 2021, at 17:32, Don Wilhelm wrote: Ted, Try 'counting to ten' before powering down. If you move the VFO just before powering

Re: [Elecraft] A K2 with a short-term memory problem

Ted, Try 'counting to ten' before powering down. If you move the VFO just before powering down, the VFO frequency may not have been written to EEPROM yet, the process is not immediate. 73, Don W3FPR On 6/27/2021 5:21 PM, eda...@aya.yale.edu wrote: I just finished debugging a K2 I built this

Re: [Elecraft] K2 No Power Output

, Don W3FPR On 6/26/2021 4:58 PM, VA1CQ wrote: Don, A logical suggestion. I already have made the RF Probe and it's ready to use. I was hoping the cause of no power might be something simpler. I will start troubleshooting in my next work session. Murray VA1CQ On 6/26/2021 5:34 PM, Don

Re: [Elecraft] K2 No Power Output

Murray, I suggest that you build the RF Probe that was included with the K2 kit.  The schematic is shown on page 9 of Appendix E along with the assembly instructions. After that, start on Appendix E page 12 - Preparation for Transmitter Signal Tracing and follow the steps shown there. 73,

Re: [Elecraft] K2 initial impressions

have to take the front panel apart. ...or so I hope.    - Jerry KF6VB On 2021-06-25 15:24, Don Wilhelm wrote: Many filters constructed using the newer crystals do not have that tilt, especially at narrow filter widths. Wide filter widths do have both tilt and passband ripple

Re: [Elecraft] K2 initial impressions

the filter is centered depends on BFO alignment which must be done for each width and both USB and LSB. On Friday, June 25, 2021, 4:04:34 PM MDT, Don Wilhelm wrote: Jerry, You will quickly get used to the UI.  If you do not have a manual, download one from Elecraft. As another

Re: [Elecraft] K2 initial impressions

Jerry, Look at the crystals again - if they are marked 4.9136-S they are the new ones. 73, Don W3FPR On 6/25/2021 5:25 PM, Don Wilhelm wrote: Jerry, Yes, those are the older crystals.  The new ones have a "-S" suffix on the label. 73, Don W3FPR On 6/25/2021 5:00 PM, jerry

Re: [Elecraft] K2 initial impressions

Jerry, You will quickly get used to the UI.  If you do not have a manual, download one from Elecraft. As another 'helper' one of my friends who was just getting used to the K2 created a chart of all buttons with their functions as well as the menu.  You can download that chart from my website

Re: [Elecraft] K2 initial impressions

Jerry, Yes, those are the older crystals.  The new ones have a "-S" suffix on the label. 73, Don W3FPR On 6/25/2021 5:00 PM, jerry wrote: So - looking at the crystal filter: the crystals are labelled thusly: ECSX 4.9136 China ...I'm guessing these are the OLD crystals. -

Re: [Elecraft] Intro - just scored a K2

the radio gets here.  The upgrade kit doesn't cost much, and neither do the crystals, but I'd feel really foolish if I looked in the radio, and it was already done. - Jerry KF6VB On 2021-06-22 14:17, Don Wilhelm wrote: Jerry, If you want to upgrade that K2, download the K2ATOB

Re: [Elecraft] Intro - just scored a K2

Jerry, If you want to upgrade that K2, download the K2ATOB instructions from the Elecraft website. Then look at the first page to see the full list of upgrades - download the instructions for each of them. Armed with that documentation, you can physically examine the K2 to see which

Re: [Elecraft] K2/10 serial number 100

Dave, Yes, that is one of the Field Test K2s - serial numbers from 1 to 100 - Wayne has SN 1 and I think Eric has SN 2.  The rest were sent serial number tags after Field Test with no priority that I know about. It can be fully upgraded as is my SN 00020.  There are a few differences, like

Re: [Elecraft] [K3} - K3 Powerpole

Rich, I have never had an APP connector break - but: I think you will have to take the back cover off.  Part of the APP connector is inside the K3. You may be able to salvage the contact blade (be certain it is seated all the way), but if you cannot, I recommend you download the assembly

Re: [Elecraft] Are there any "bad radios"?

The 50s and the 60s had a lot of radios that did not meet the current FCC requirements.  Clicks and chirps were quite evident on the bands.  Some were gradually culled out as those radios were taken out of service, but I think it was not until the 90s that we saw a great reduction in those

Re: [Elecraft] KX3 Roofing filter

PJH, You must run the calibration routine anytime you install or uninstall the roofing filter. 73, Don W3FPR On 6/12/2021 3:19 PM, PATRICK HICKS wrote: I have 2 KX3s that I intend to use in 2 different locations. One is an older one that has a roofing filter and the newer one does not. I

Re: [Elecraft] XV222 Mods Question

Mike, Has the paint been cleared from all parts of the enclosure that contact the 2D connectors? If not, that could be reason for your observations. You might want to remove those capacitors to see if all is well without them. I have lots of experience with the Elecraft transverters and do

Re: [Elecraft] using the sub receiver in a K3S with a 2nd P3?

Jeff, The SubRX has the same buffer as the main RX, but nothing is done with it. To add the SubRX IF output, you need to look at the holes for the coax that are next to the buffer amp - approximately in the middle of the board the holes for the coax are there - doing nothing until you use

Re: [Elecraft] A Clarification: IC-7300 vs FTDX10

Richard and all, I have a friend who bought a K3s and then afterward bought an IC-7300.  He is a weak signal CW type of guy and reports that there are many weak signals that he could copy on the K3, but were non-existent on the IC-7300. His reason for buying the IC-7300 had to do with

Re: [Elecraft] K2 rotary encoder

Josh, Your investigation is "spot on" and I would normally recommend replacing Front Panel U3.  It is possible for it to have one bad input and is quite static sensitive. But first, check that 8R and 8T signal lines are working properly.  An easy place to check is at the anodes of RF Board

Re: [Elecraft] T1 Tuner Kit Control Board final check issues

of the anode then I get a reasonable value as well; perhaps the difference in meter currents used for measurements is messing up due to the diode being in the circuit as the check is worded?   Thanks and 73, Erik Tkal  -  W1QED On May 24, 2021, at 15:32, Don Wilhelm <mailto:d...@w3fpr.

Re: [Elecraft] T1 Tuner Kit Control Board final check issues

Since that is the case, check the value of the resistors and check out the soldering under magnification. 73, Don W3FPR On 5/24/2021 3:08 PM, Erik Tkal wrote: Hi Don, Nope, D3 and D4 are correct, and the LEDs check out per the test...

Re: [Elecraft] T1 Tuner Kit Control Board final check issues

Erik, Check and double check the orientation of the diodes.  That is the most likely reason for you measurement results. 73, Don W3FPR On 5/23/2021 5:39 PM, Erik Tkal wrote: I just assembled the T1 kit, but am having an issue in the final check phase of the Control Board. "Resistance

Re: [Elecraft] Frequency Accuracy and stability

Lou, I find that viewing the output on an audio spectrum analyzer (I use Spectrogram) helps, one can see the beat to a lower frequency that normal hearing.  Just watch the amplitude of the signal - when the beat goes to as close to zero as you desire, you are "there".  I have found that I

Re: [Elecraft] Curious

Ronnie, Yes they do, but due to Covid-19 and short staffing, it may take a while. If you did not direct your email to supp...@elecraft.com, it may take a while to get it from one email address to another until it finally hits support. 73, Don W3FPR On 5/19/2021 6:22 PM, Ronnie Hull wrote:

Re: [Elecraft] Danger of uncommanded PWR off?

Mark, If just "pulling the plug" is what you intend, that is not a good idea.  If your K3 has been idle for a long time, you can probably get away with it, but is not recommended. Issuing the Power off command will allow a smooth shutdown of the K3 and will preserve its state. Compare it to

Re: [Elecraft] Demure Request -- html test email

It is not.  mailman.qth.net may have changed its posture on HTML, but I doubt that they will allow attachments. 73, Don W3FPR On 5/12/2021 5:08 PM, Edward H Russell wrote: This is html. Is it blank? __ Elecraft mailing list Home:

Re: [Elecraft] Demure Request

If it is in HTML, I wonder why the mailman.qth.net HTML stripper let it through. Email in HTML normally comes through blank. 73, Don W3FPR On 5/12/2021 3:51 PM, DAVID HEWITT wrote: - This mail is in HTML. Some elements may be ommited in plain text. - Hello there! sorry to bother you,do you

Re: [Elecraft] K2/100

Doug, Peer into the side of the KPA100 (the side where the coax and power connections are) - If you see blue toroid cores, the upgrade has been done.  If you can only see red toroid cores in about the middle of the board, the lastest update is not installed. 73, Don W3FPR On 5/11/2021 1:00

Re: [Elecraft] K2/100

Larry, The KPA100UPKT totally revamps the T-R switch section on the KPA100, so the answer is yes. There is a chance that there may be a nasty spur when on 40 meters - at about 8 MHz if you do not have the upgrade. 73, Don W3FPR On 5/10/2021 4:04 PM, Larry Dodson via Elecraft wrote: I

Re: [Elecraft] K3 s/n 2274 update to new synthesizer board

John, Yes, there are lockwashers behind the board - when removing the old synth, do not initially remove the screws completely - loosen them until they are almost out, then tilt the board toward the rear and push the lockwashers up against the old synth board. Now you can fully remove the

Re: [Elecraft] K2/100 up-date

Lou, Download the K2 A to B instructions and inspect your K2 to see which mods have been installed. Physical inspection is the only way I know to do it. 73, Don W3FPR On 5/10/2021 8:21 AM, Louandzip via Elecraft wrote: One thing that's holding me up is doing the research to figure out

Re: [Elecraft] K2/100 up-date

Greert Jan de Groot, If you have an earlier K2, I suggest that you do the other upgrades. If your K2 is below SN 3000, then the K2ATOB mods are applicable - download the K2ATOB instructions for a list of all the mods are required. If your SN is below 2560, I recommend replacing the IF crystals

Re: [Elecraft] RF Cable From KX3 to KXPA 100

Jeff, Either would be more that adequate.  You could also use RG58 if that is better for you. It does not have to have the high voltage ratings of RG8, and RG58 is more flexible than RG8X. No need for overkill. 73, Don W3FPR On 5/9/2021 6:49 PM, w...@flashdog.us wrote: Hi Everyone, Quick

Re: [Elecraft] K2/100 up-date

, Dave, W8FGU On May 9, 2021 17:58:37 Don Wilhelm wrote: I trust you installed the KPA100UPKT - the KPA100MDKT is not necessary because all the changes for that mod are included in the KPA100UPKT. I am still able to answer questions, but I can no longer physically do the work.  Getting old 'sucks

Re: [Elecraft] K2/100 up-date

I trust you installed the KPA100UPKT - the KPA100MDKT is not necessary because all the changes for that mod are included in the KPA100UPKT. I am still able to answer questions, but I can no longer physically do the work.  Getting old 'sucks', and I am getting up in years. I try to help Dave

Re: [Elecraft] KSB2 problems in K2 transceiver

Mark, When you have the problem, look at the voltage at P1 pin 6 (that is VRFDET signal)? If that is high, the MCU will limit power drastically. Make sure Q1 is properly oriented.  If that does not help, try a mod to the KSB2 - reduce R9 to 1.5k and cut the trace between P1 pin 6 and the

Re: [Elecraft] Speaker upgrade

Phil, You may want to check out the Behringer mixers even though they may have more inputs than you need.  I don't know if any of the inputs support Bluetooth natively. They are low in price and work well. 73, Don W3FPR On 4/26/2021 10:06 AM, Phil Kane wrote: Really OT but where else can I

Re: [Elecraft] OT: High school drafting class,

Ted, Does that mean that you were allowed to "color outside the lines"? As an engineer, I always had to "stay between the lines" (my creativity had to be placed in other directions, not exceeding specs) but that is good advice for drivers too - as well as clean side up and dirty side down.

Re: [Elecraft] Need a tuning knob for K2

Frank, Just take the top cover off and look between the upper 2D connectors and the Front Panel board. 73, Don W3FPR On 4/25/2021 10:34 AM, Frank Krozel wrote: Thanks Don, will check today. I also need to figure out which K2 need those small 3/8”x3/8” rubber spacers in-between the PC

Re: [Elecraft] Need a tuning knob for K2

Frank, Do you have the new encoder?  I don't know which SN they were started.  That is the key to which knob you need.  If the knob is off, lift the fiber washers and check to see if there is a green tab in the hole to the right of the encoder shaft.  If the hole is empty, you have the new

Re: [Elecraft] OT: High school drafting class, ~1975

I did take a Mechanical Drawing class in High School.  It was of some use in my EE classes in college, but mostly drawing lines for schematics at that time (1960 era) - a straightedge and a compass or plastic template for making circles (remember tubes) was all that was needed at that time. 

Re: [Elecraft] Speaker upgrade

Since the K3 has stereo output, I suggest you look at the West Mountain Radio ComSpeakers.  They do a good job. My K3 had 2 Radio Shack mini speakers on it, and the KX3 uses the ComSpeakers.  Great in all respects. 73, Don W3FPR The original poster asked about plugging in both the speakers

Re: [Elecraft] Speaker upgrade

Yes, They call it ComSpkr and it is priced at $39.95. It is a pair of "computer" speakers, but it is shielded so it does not buzz when RF is present. 73, Don W3FPR On 4/24/2021 11:50 AM, NJMike wrote: Can you confirm the West Mountain ComSpeaker is #58410-950? Since I’m a new K3S owner and

Re: [Elecraft] Speaker upgrade

Since the K3 has stereo output, I suggest you look at the West Mountain Radio ComSpeakers.  They do a good job. My K3 had 2 Radio Shack mini speakers on it, and the KX3 uses the ComSpeakers.  Great in all respects. 73, Don W3FPR On 4/23/2021 6:01 PM, Rick Bates, NK7I wrote: Regardless of

Re: [Elecraft] Speaker upgrade

Get a replacement from Elecraft. Which radio? 73, Don W3FPR On 4/23/2021 3:27 PM, Steve Fox wrote: Hi Anyone care to recommend an internal speaker replacement? __ Elecraft mailing list Home:

Re: [Elecraft] Problem: FT8, KX3, SignaLink USB

Carter, Do you also have VOX active?  With both PTT and VOX on, that will happen. On 4/21/2021 9:57 AM, Carter Craigie wrote: I am setting up my KX3 for FT8 using a SignaLink USB interface. My computer runs Windows 10. For PTT, I have checked the CAT option. When I do the test for CAT and

Re: [Elecraft] Elecraft K3/P3 last-time order

John, Deposit 1/2 the price now, or deposit the full price. 73, Don W3FPR On 4/20/2021 1:57 PM, John Simmons wrote: What is the difference between 'half dupl' and full dupl'? __ Elecraft mailing list Home:

Re: [Elecraft] XV144 Crystal Oven

David, Sadly, that crystal oven is no longer manufactured. I am certain there are other crystal ovens available, but you may have to cobble something together because the pins are not likely to fit the XV144 board. The easiest solution is for someone to step up and tell you he has a spare.

Re: [Elecraft] K3 MD command question

Bob, I suggest you set up SSB as you want it - Compression and TX EQ as well. Then for digital, use DATA A - it automatically turns off compression and TX EQ. All that can be accomplished with VFO A, no involvement with VFO B unless you invoke it. Know that a double tap of A>B will transfer

Re: [Elecraft] K3 MD command question

Bob, I believe you are ignoring the ALT button (hold of the left side of the Mode button). Why use a Macro?  Set  the K3 to SSB on the band of interest and change the mode with the MODE button to select SSB the normal sideband for that band, If it is not correct, hold the left side of the

Re: [Elecraft] Do not use K4 "Restore Defaults" button

Rich, That restore function is available in KX3 Utility - Restore Configuration.  Of course you should have saved a configuration so you can restore it.  Save a configuration any time you make significant changes to your KX3 (not a firmware update).  The file is placed in your computer.

Re: [Elecraft] Elecraft Digest, Vol 204, Issue 6

Tommy, I highly recommend that you get the proper screws from Elecraft to be certain they are the correct length. Hardware store screw are normally not available in black, so why mess up the appearance of your KX2 with zinc plated screws. 73, Don W3FPR On 4/13/2021 11:36 AM, Tommy Judson

Re: [Elecraft] K3 with N connectors ?

Larry, One local ham had me change the UHF SO239 connectors to N connectors because he does not trust the UHF connectors. I know he recently sold it, maybe it is the same one. It is easy to change them back to UHF type, but it definitely did not come from the factory that way. 73, Don W3FPR

[Elecraft] Testing

Just testing - I have not seen many posts over the last month 73, Don W3FPR __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft@mailman.qth.net

Re: [Elecraft] Big Knob Fail

Hank, He should email supp...@elecraft.com for the most certain response. In the meantime, the encoders for VFO A and VFO B are the same - so he should swap them to see if the problem follows the encoder. If it does, then a new encoder will fix it. If not, it is more involved and will

Re: [Elecraft] K3S RF/SQL Adjustment

Mike and Brett, Go to my webpage www.w3fpr.com and scroll the left column to the "Noisy K3" article for assistance in adjusting the AGC Threshold and slope. 73, Don W3FPR On 2/17/2021 1:57 PM, NJMike wrote: Brett, I am new to the K3S. I set mine according to the Fred Cady book. Mine are

Re: [Elecraft] K3 assembly voltage regulator failure

Adrian, If you can find no solder bridges, then Yes, replace the regulator. 73, Don W3FPR On 2/13/2021 9:15 PM, KJ7SOY wrote: Hi everyone! I’m new to the list and to Elecraft radios and HAM in general. Thanks for bearing with me while I learn! I picked up an unassembled K3 at an auction

Re: [Elecraft] K2 filter optimisation

Ian, Spectrum Lab runs on Windows and Linux, but Mac is not specifically mentioned. Google for it and read for yourself. If you have a Windows machine, you can use Spectrogram. Download from my website www.w3fpr.com - Scroll to near the bottom of the home page to find the links. 73, Don

Re: [Elecraft] No AF in K2

Rune, It is most likely a bad connection. If the KAF2 or KDSP2 is installed, reseat those options to wipe away any oxidation on the pins. When the loss of AF appears, do you still have sidetone (use the SPOT button in CW mode)? If so, the AF amp is OK - follow the path from the IF

Re: [Elecraft] K2 LCD Screen Issue

Mark, I think you will find that the socket pins of Front Panel U1 are not well soldered. 73, Don W3FPR On 2/7/2021 1:18 PM, Mark Yergin wrote: My K2 (S/N 7867) which I built has always had an intermittent problem with the bottom horizontal row of LCD elements. Often they are missing until

Re: [Elecraft] Kx3 and KXPA100 without PX3 while using a computer pan adapter

John, You plug in both the ACC1 and ACC2 cables from the KXPA100 (in the KXPACBL) - the PC connects to the KXPA100. 73, Don W3FPR On 2/4/2021 1:32 PM, John Evans wrote: Greetings all, I’ve been using HDSDR with Omin-Rig with a Xiegu G90 and was able to get the panadapter setup working

Re: [Elecraft] K2 w/ KAT100 PC control

Chuck, Spend the $$$ to buy Amphenol or other name brand connectors, and you will not be sorry. If you are willing to take your chances on "penny pinching",then you can buy any connector that is advertised, but be prepared to accept connection failures. 73, Don W3FPR On 1/30/2021 6:48 PM,

Re: [Elecraft] K2.Unable to undertake VCO alignment.

Doug, Are you on 40 meters? Did you measure the PLL Reference oscillator range (counter probe in TP3)? What were the frequencies? Any chance you replaced Q19 during the upgrade process? If so, where did you get it? 73, Don W3FPR On 1/27/2021 12:22 PM, Douglas Hagerman via Elecraft

Re: [Elecraft] K2.Unable to undertake VCO alignment.

What were the results of the PLL Reference Oscillator test - especially the high frequency at TP3? - the frequencies please. The 5 volts on the SCK signal is normal. Do not wear out the slug in L30! Is this a new build or the result of upgrades to an old K2? Do you have an oscilloscope with a

Re: [Elecraft] MH2 mic and the K3

I am sorry to disagree, but the MH2 will work fine for both the K2 and K3. They are interchangable. After the repair and configuration of over 1000 K2s, I am quite familiar with the K2 microphone configuration for various microphones. Yes, the K2 mic config header must be jumpered properly

Re: [Elecraft] MH2 mic and the K3

Mike, Yes, no problem. It needs bias. The MH4 was the replacement when the MH2 was no longer able to be sourced by Elecraft. 73, Don W3FPR On 1/26/2021 1:13 PM, NJMike wrote: Will the MH2 hand mic that was originally for the K2 work with the K3? I know there is an MH4 mic now that works

Re: [Elecraft] K2 battery options

Lou, The charging mechanism for the KBAT2 is specifically for the SLA battery. It may work for the LiFePO4, but that is just a guess on my part based on the terminal voltage. Secondly, you should not exceed 15 volts, so a 4 pack of Li-Ion exceeds that voltage. Then there is the matter of

Re: [Elecraft] K2 utility program

Chuck, There is no program to do that with the K2. There may be some old software out there, but I don't know about it. 73, Don W3FPR On 1/25/2021 8:33 AM, Chuck Chandler wrote: Is there an Elecraft software program for the K2 similar to the Elecraft K3 Utility? I'm looking for something

Re: [Elecraft] (no subject)

Click on the Home link that is at the bottom of every post. Use that to unsubscribe or change your settings. 73, Don W3FPR On 1/17/2021 8:09 PM, Keith Lamonica wrote: KEITH, HOW DO I UNSUBSCRIBE? __ Elecraft mailing list Home:

Re: [Elecraft] Activity on the Elecraft reflector

Ed, Yes, you are in the right place. This reflector is the place for anything Elecraft. 73, Don W3FPR On 1/15/2021 1:44 PM, Ed Stallman wrote: Tnx Everyone , looks like I'm in the right place . The KPA-1500 is new in the shack , while I have no questions at this time I'm sure I will in

Re: [Elecraft] XV144 external Oscillator?

Martin, I have not done it, but the major problem I see is the question of "how to get the signal inside the enclosure". There is precious little room on the rear panel. You could go through the right side panel depending on how you locate the oscillator with respect to the transverter.

Re: [Elecraft] K2 speaker dont mute

I suspect that K2 SN is below 3000. If so, add the Alternate AF Gain Wiring mod. While you are doing that, I recommend that you replace the AF Gain control. The easiest way to change the control is to cut the pins close to the body, then alternately heat the two mounting tabs while rocking

Re: [Elecraft] K3 and 2m amp ptt

Raj, A simple logic circuit to detect all zeros on the 4 band data lines and the presence of Keyout-lp would do that task easily. 73, Don W3FPR On 1/10/2021 3:39 PM, Rajiv Dewan wrote: Hello all, I would like to have PTT out signal from my K3 that is ONLY activated when the internal

Re: [Elecraft] K2 updates needed

Chuck, Any K2 above SN 4660 is fully up to date. If your real question is about options rather than updates, lift the cover to see which options are installed. 73, Don W3FPR On 1/10/2021 9:14 AM, Chuck Chandler wrote: I've begun volunteering as part of the radio gang on board the museum

Re: [Elecraft] KE7X Website

Ted, You might want to contact the folks who preserved the website of Tom Hammond N0SS (SK) for information. It is preserved as a subpage on the MMARC website. Jim Biggerstaff the_biggersta...@embarqmail.com is the major contact. 73, Don W3FPR On 1/7/2021 9:43 PM, eda...@aya.yale.edu

Re: [Elecraft] K2 K2KSB2XTLS matched crystals

Those are the updated crystals. Every K2 after SN 2560 has them. The 4.9135-S is the thing to look for. 73, Don W3FPR On 1/6/2021 8:51 AM, Jim via Elecraft wrote: K2 serial 397* with KSB2 how do I know if I have matched crystals? Reading the current crystal markings as follows: ECS V

Re: [Elecraft] K2 KPA100 overheating/erratic fan problem

Yes, a standard serial cable plugged into the AUX IO connector will cause "strange happenings". 73, Don W3FPR On 1/6/2021 2:27 AM, n...@yahoo.com wrote: Hi Don, I think I tracked the problem and I would like to document it for future generations :). I noticed that during SKCC events I don’t

Re: [Elecraft] K2 update path?

The K60XV option is currently not available because the trimmer caps required have been discontinued. There is some effort being put into substituting SMD trimmers, but that is not complete. 73, Don W3FPR On 1/4/2021 9:02 AM, Louandzip via Elecraft wrote: I was marginally aware of some of

Re: [Elecraft] K2 audio output question

Chuck, Yes, you can do that by soldering a jumper across the switch at the rear of the headphone jack. If you prefer not to add the jumper, plug stereo computer speakers into the headphone jack and plug your headphones into the headphone jack on the speaker. Try different computer speakers,

Re: [Elecraft] K2 update path?

Lou, I cannot give you a List by date even though I have been working with the K2 since 1998. The best I can do is refer you to the K2ATOB instructions (download it). The 1st page lists all the associated updates. Download the instructions for each of those and inspect your K2 to see what

Re: [Elecraft] WTB: Nifty K2 Manual

John, Phil, and others, It is not a Nifty Manual, but a friend created a nice reference for the K2 as he was learning to use it. It is available for download on my home page - look a few paragraphs up from the end of the home page www.w3fpr.com You can print it and tri-fold it for a nice

Re: [Elecraft] External sound card advice needed to attach to K3

I fail to understand why so many are resistant to using an external USB soundcard. Those adequate for data mode use are available in the $10 to $20 range, and it solves a lot of problems. Sure there are exotic soundcards costing $100 or more, but those are overkill for data modes. If you

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