Re: [Elecraft] Elecraft K2

I use this case to transport my K2. https://www.powerportstore.com/product-page/radio-box An IC-706 or a FT-991A also fit. Glenn - KD0Q On Sun, Aug 25, 2024 at 12:11 PM Larry Boekeloo wrote: > Hi Everyone > > I'm curious what others are using to protect their K2 when you take it out > in the f

Re: [Elecraft] Elecraft K2

Hello Larry, I'm curious what others are using to protect their K2 when you take it out in the field? Anything in particular that works well for its size? Everything that is good for the operator is also suitable for the K2. - a waterproof underlay when the ground is wet - a waterproof cove

[Elecraft] Elecraft K2

Hi Everyone I'm curious what others are using to protect their K2 when you take it out in the field? Anything in particular that works well for its size? Thanks Larry, KN8N Kalamazoo Michigan __ Elecraft mailing list Home: http://mailm

Re: [Elecraft] K2 Keypad

Santos via Elecraft Sent: Saturday, August 10, 2024 1:01 PM To: Dave W8FGU Cc: Elecraft Reflector ; Michael Carter Subject: Re: [Elecraft] K2 Keypad Dave, Don, and Mike, Thank you so much for your help. You zeroed right in on the problem with my K2. As I said earlier, I didn't build this radio

Re: [Elecraft] K2 Keypad

Dave, Don, and Mike, Thank you so much for your help. You zeroed right in on the problem with my K2. As I said earlier, I didn't build this radio, but recently acquired it in a private purchase. I do have a K2 kit I got directly from Elecraft a few months ago, and am eagerly looking forward to

Re: [Elecraft] K2 Keypad

Ok Bill, that pin might be bad. Those chips are highly suseptible to static discharge.  I'm thinking you may have to replace U3. Or if you can safely remove U3, then measure it again and see if something else is pulling it up. 73, Dave, W8FGU Aug 7, 2024 18:35:16 William Santos : > OK, pin 16

Re: [Elecraft] K2 Keypad

OK, pin 16 on U3 reads 4.967V, (essentially 5V) so it appears it's staying at 5V and not being pulled down. Inspecting the solder on pin 16, it doesn't look like a cold joint. > On Aug 7, 2024, at 11:46 AM, William Santos wrote: > > Thanks Dave, > > I will open the 2 up and test with the mult

Re: [Elecraft] K2 Keypad

Thanks Dave, I will open the 2 up and test with the multimeter when I get home from work. I'll report back with the voltage I see. I do have a scope, but haven't used it much and never hooked it up to a radio this complex before. > On Aug 7, 2024, at 11:43 AM, Dave Van Wallaghen wrote: > > B

Re: [Elecraft] K2 Keypad

Bill, Don and Mike have you looking in the proper location on the Front Panel Board. I suspect that the RIT/XIT pot does not work as well, but as you say, you can't invoke RIT or XIT at this time to determine this. Something is not allowing the /BANK2 signal to occur in order to scan those co

Re: [Elecraft] K2 Keypad

Bill, Not a menu problem.  Check the soldering at FP U3 pin 16 as well as all of U2 and RP1. What does work?  That info will assist in properly diagnosing the problem. 73, Don W3FPR On 8/7/2024 2:23 AM, William Santos via Elecraft wrote: My K2 (SN 04507) with K100, SSB module, etc. seems to

Re: [Elecraft] K2 Keypad

Hi Mike, Thanks for your response and attention to my issue. Yes, it is only the buttons to the right of the LCD that are affected. All of the pots to the left of the VFO knob work properly, as do all the push buttons on the left (BAND+ through NB). To the right of the LCD, I can only confirm

Re: [Elecraft] K2 Keypad

Hi again, Bill, I re-read your post and realized that it's only the buttons to the right side of the LCD display that fail to function (with the exception of the MODE button). Is that correct? If so, I will retract my statement about the parallel load shift register not working properly. If it w

Re: [Elecraft] K2 Keypad

On 2024-08-07 07:29, Michael Carter via Elecraft wrote: The K2 uses a parallel switch status polling process to determine the switch states. There are two banks of 8 switches, *** I love these radios. Because you can fix them. - Jerry, KF6VB

Re: [Elecraft] K2 Keypad

Hi Bill, I think you've got a genuine hardware problem rather than being transported into an unknown menu setting. Does the MENU button work at all? Can you change the frequency display by rotating the main tuning knob? The K2 uses a parallel switch status polling process to determine the switc

[Elecraft] K2 Keypad

My K2 (SN 04507) with K100, SSB module, etc. seems to have a problem with the keypad. I cannot activate the filters (XFIL), switch from A to B, or get out of PRE (PRE/ATT). The MODE(1) key works, but the other 8 keys (2-9) don't seem to have any effect when pressed. Does this sound like a hard

Re: [Elecraft] K2 options

Hi Ron, I've not seen any 'dimensioned PCB' layouts for the K2 RF board or Control board. The manuals over the years have included the skeleton drawings of parts placement, but no scale is included. I suppose if someone had a K2 RF board which is bare and could take a photograph of it, one could

[Elecraft] K2 options

I've recently completed a K2 assembly and have on order a couple of options for it. I also have some plans for some modifications beyond that. Is there a library of current option "footprints", like option pcb dimensions & mounting holes, such that modifications can be included without interferin

Re: [Elecraft] K2 PA KEY (J7) stopped working

Chris, Yes, the most likely suspect is Q9, but it is quite hardy and seldom fails. Take a look at the gate voltage to Q9 while keydown (you can set the power to zero for that test, or work the K2 into a dummy load). If the gate voltage goes to 5 volts or so, then Q9 is the problem.  If it stays

[Elecraft] K2 PA KEY (J7) stopped working

Hello, My K2/100 has an issue with the PA KEY (J7). With the key down, it has about 350k ohms as opposed to the specified 3 ohms. Will replacing Q9 fix the issue, or can there be other areas that can cause this issue? Many thanks, Chris KM1B __

Re: [Elecraft] K2

Larry, You will not be able to remove the Front Panel just by removing the 4 screws. Ignore those You-Tube videos - they are both inadequate. Take the top cover off and peer between the Front Panel and the Control Board - you should see two standoffs (one near the left and the other near the

[Elecraft] K2

Hi everyone I need to look at the microphone settings in my K2. After reading the manual, it states to pull the 4 screws holding the front panel. When I look at YouTube videos, I see two methods. One person pulls the 4 screws and the front panel seems to pull off with some ease plus the board a

Re: [Elecraft] Elecraft K2

N5GT [n5gt@gmail.com], elecraft@mailman.qth.net subject For Sale K2100 with KAT100-1 contact me at gmail.com On Thu, Jun 20, 2024 at 8:42 PM W3FPR wrote: > The K2 is not discontinued and will not be in the near future, but the > KPA100 and the KAT100 have been discontinued. > The KAT2 is s

Re: [Elecraft] K2 receive problem

I would suspect a bad relay associated the 40m lowpass filter -- or a bad solder connection to one of those relays. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco On 21/06/2024 3:55 pm, Jos Weitenberg wrote: I have the following problem with my K2, when I

[Elecraft] K2 receive problem

I have the following problem with my K2, when I switch on the K2, sometimes the 40m band is deaf. If I then switch to 30m and back to 40m, the reception is good again. Or if I switch on the transmitter in the 40m and go back to reception, the reception is normal again. Does anyone have any idea

Re: [Elecraft] Elecraft K2

The K2 is not discontinued and will not be in the near future, but the KPA100 and the KAT100 have been discontinued. The KAT2 is still available if you want to operate at 10 to 15 watts output. If you want 100 watts and the KAT100 tuner, you will have to ask if anyone has one or the other for sa

[Elecraft] Elecraft K2

HI group I've been thinking about purchasing a nice used K2 but I've noticed Elecraft doesn't have the KAT100 tuner anymore. Has there been any talk to discontinuing the K2? Thoughts? Larry, KN8N Kalamazoo Michigan __ Elecraft mai

Re: [Elecraft] K2 CAT

Hello Jerry, Hello K2 experts! I'm not an expert, but the "Elecraft KIO2 Programmer's Reference" at says at page 5: PC (Power Output Level; GET/SET) Extended SET format: PCnnn; where nnn is 000-150 in 0.1-w

[Elecraft] K2 CAT

Hello K2 experts! I have a question about the CAT support - as implemented in the KPA100. Is there a CAT command to set transmit power? The situation is - the K2 is my main CW machine. It has two killer features: 1) It has true quiet diode-switched QSK. and 2) It fits perfectly und

[Elecraft] k2 rfc4 value

need the choke value 10µh in mA for replacement carlos on6cn -- mvg carlos popelier regards carlos popelier __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailt

Re: [Elecraft] k2 q6 no 12v on q6 collector,

Hi Carlos, Since there is zero voltage measured on either terminal 1 or 2 of transformer T2, I would look at RFC4 and test continuity there. It could be that RFC4 is now open. Keep tracing the voltage along that +12V rail back to the point where it supplies the Q7 and Q8 collectors via the transf

[Elecraft] k2 q6 no 12v on q6 collector,

k2 starts up ,is working,no rf output, removed driver and finals, they are ok,12v on transmit finals but no voltage on q6 collector , measured no voltage on t2 leg 1 and 2, any thoughts welcome carlos Verzonden vanaf Outlook voor Android __

Re: [Elecraft] k2 driver q6

Hi Carlos, When you say 'no voltage' measured on Q6, can you be more precise? The collector of Q6 should measure about 12 V DC whether in TX or RX. The base and emitter voltages will be zero until the transmitter is keyed on. The base voltage depends on the selected mode (CW or SSB), and I reco

[Elecraft] k2 driver q6

after a bit to long tuning, no output, finals are ok, driver q6 measured no voltage on it, what should i check to get me on the right track carlos on6cn -- mvg carlos popelier regards carlos popelier __ Elecraft mailing list Home: http:/

Re: [Elecraft] K2 VFO Friction

Joel, Do you have the old or the new encoder? look in the hole to the right of the encoder shaft - if you see a bit of green, it is the old encoder, if nothing in that hole it is the new one. The new encoder needs 3 felt washers stacked while the old encoders need only one. Contact Elecraft,

Re: [Elecraft] K2 VFO Friction

The felt furniture foot pads Use a paper hole punch Curt KU8L On Tue, Mar 26, 2024, 10:23 AM Joel Black wrote: > My K2 VFO knob spins a little more freely than I'd like. I took it off and > looked at the felt and it appears pretty thin and worn. > > I really thought about using the felt rings

Re: [Elecraft] K2 VFO Friction

Elecraft can send the proper part.73,Ed W0YK Original message From: Joel Black Date: 3/26/24 07:23 (GMT-08:00) To: Elecraft List Subject: [Elecraft] K2 VFO Friction My K2 VFO knob spins a little more freely than I'd like. I took it off and looked at the felt and it ap

Re: [Elecraft] K2 VFO Friction

On 3/26/2024 10:21 AM, Joel Black wrote: I really thought about using the felt rings that you can get for 12 VDC battery terminals but wondered if anything’s on those rings (anti-corrosive) that would keep me from doing that. Otherwise, is there anything that anyone has found that works parti

[Elecraft] K2 VFO Friction

My K2 VFO knob spins a little more freely than I'd like. I took it off and looked at the felt and it appears pretty thin and worn. I really thought about using the felt rings that you can get for 12 VDC battery terminals but wondered if anything’s on those rings (anti-corrosive) that would keep

Re: [Elecraft] K2/100 down power on 20M

Hi Jerry, I agree that the relatively low TX power output on 20M originates in the KPA100 module. Did you build that module and install it yourself? The LPA circuit in the base K2 seems to operating normally, and your peaking of the BPF confirms that. If you have capability to sweep the 20M/30M

Re: [Elecraft] K2/100 down power on 20M

OK, With a dummy load - actually a 500W Bird 30dB attenuator - the displayed power out came up to 78W. I tried adjusting the bandpass filter - it was already spot on. They use one filter for 40M and 30M, and you go back & forth between the two. It was already perfectly peaked & tweaked.

Re: [Elecraft] K2/100 down power on 20M

But before that, I should redo the test with a dummy load. Yes. And it's not just gain decreasing with rising frequency, because it does 92W on 15M, 76W on 10M. First suspicion ... check the alignment of your bandpass filters. 73, ... Joe, W4TV On 3/16/2024 11:56 AM, jerry wrote: He

[Elecraft] K2/100 down power on 20M

Hello, I've been doing a bit of operation with my K2 lately. It really is a joy on CW, and it fits perfectly under my big computer monitors. But I have noticed On 40M, it does 101W out. But on 20, only 63W. This is measured with a Telepost LP-100A vector wattmeter. The SWR is 1.4

Re: [Elecraft] K2/100 refurbishment

May I add another pitfall: The original K2 radio has a round 2.1mm plug to power the radio. The KPA100 adds a powerpole 12V input. Powering the radio through the powerpoles will feed the radio *and* the amplifier. However the reverse is not true; powering the round plug will feed the radio bu

[Elecraft] K2/100 refurbishment

Hi Steve How many screws do you need as I carry a stock of screws for the K2 & K3. Don G6CMV __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm

Re: [Elecraft] K2/100 refurbishment

1. Look at the pin diodes. 2. Elecraft isn't in the UK, but they sell stainless steel screws of the right size. 73, Victor, 4X6GP Rehovot, Israel Formerly K2VCO CWops no. 5 http://www.qsl.net/k2vco On 12/03/2024 22:06, Steve Bunting via Elecraft wrote: Hi. I’ve picked up a K2/100 from an s

Re: [Elecraft] K2/100 refurbishment

__ 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 by: http://www.qsl.net Please help support this email list: ht

Re: [Elecraft] K2/100 refurbishment

__ 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 by: http://www.qsl.net Please help support this email list: ht

Re: [Elecraft] K2/100 refurbishment

Hi Steve, No answer for your question #2 - Elecraft sells packs of 25 screws for modest price, but shipping to U.K. and VAT (if applicable) may dictate otherwise. Maybe pose that question to John, G3PQA - he's done a lot of work on Elecraft radios for fellow hams in the U.K. Before doing any tes

[Elecraft] K2/100 refurbishment

Hi. I’ve picked up a K2/100 from an sk sale. It has two issues: 1. The 100w PA doesnt work. I get power from the low power stage but above 15w power output drops to zero as the 100w stage clicks in. Before I go through all the devices systematically, is there a common fault that I can check?

Re: [Elecraft] K2 Number

Hi Harold, The K2 serial number is on an adhesive tag to be placed on the lower rear panel of the radio. It was in a very small manila envelope in my K2 kit. I don't believe there is any internal coding of the MCU that contains the rig's serial number as there is in the K3. 73, Mike, K8CN ___

Re: [Elecraft] K2 Number

Harold, you should have received a sticker to be affixed to the rear connector panel. Sent from Gmail Mobile On Sat, Mar 9, 2024 at 12:29 PM Harold Howells wrote: > I notice that most K2 builders refer to their radio with a four digit > number, apparently a serial number. Where is this number

[Elecraft] K2 Number

I notice that most K2 builders refer to their radio with a four digit number, apparently a serial number. Where is this number located on the radio? Thanks. HH Harold Howells hhowe...@intrq.com __ Elecraft mailing list Home: htt

Re: [Elecraft] K2 Manual building method

There is no engineering reason for soldering as you go a la Heathkit vs. installing groups of components and then soldering them. I have had both problems mentioned by Skip in my years of building kits: overlooked solder joints and components in the wrong holes. In my experience, looking for a m

Re: [Elecraft] K2 Manual building method

On 2024-03-07 15:40, Fred Jensen wrote: I'm colorblind and can't read color codes so every resistor was checked with the ohmmeter.  I asked my wife once to read a couple of color codes ... "That one is sort of a pinkish salmon, this one is a light mauve."  Gave up on that. I've sort of given up

Re: [Elecraft] K2 Manual building method

Back in the point-to-point wiring days it was common to place a number of components at once, folding the leads/wires over the terminals and then soldering all of them.  It was said to cut down on misplaced components because you were focused on selecting the right components and placing them c

[Elecraft] K2 Manual building method

Hello and thanks in advance for your help. I’m just getting going on my K2 build and I don’t understand the reasoning behind putting all the capacitors in the PCB, bending their leads to hold them in place, and then soldering them all at the end? This seems to me create a big mess with compone

[Elecraft] K2 - Transmit limits

Searching the net I found this old link https://www.qsl.net/ve3mcf/elecraft_reflect/K2_TX_Lock_Enquiry.txt Well the K2 is still licenced in Thailand and obviously Elecraft is probably still selling the necessary firmware. 73 - Pierre - FK8IH ___

Re: [Elecraft] K2 - Transmit limits

--Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of JCG Sent: Sunday, March 3, 2024 07:35 To: elecraft@mailman.qth.net Subject: [Elecraft] K2 - Transmit limits Sir, I plan to order and build a CW K2 to use it in Thailand. That country is very strict about licencing of transc

[Elecraft] K2 - Transmit limits

Sir, I plan to order and build a CW K2 to use it in Thailand. That country is very strict about licencing of transceivers and require that they cannot transmit outside of the local Ham Bands limits. Your manual v1 shows on page 95: "Transmit Limits: Some countries require transmit to be disable

[Elecraft] K2 troubleshooting (was: K2 AGC)

Hi Iran, I changed the subject line to reflect that this thread is continuing as a general troubleshooting exercise with your K2. The NE602 product detector has a balanced output circuit and unless you use a differential scope probe (or do the CH1 - CH2 trick with your single-ended probes) you wi

[Elecraft] K2-100 For Sale

K2-100 #7450 - base unit aligned by Elecraft & KPA-100 built & aligned by Don Wilhelm, W3FPR. Includes KSB2 SSB option and KDSP2 Advanced DSP Filter & Real-Time Clock plus Heil headphone mic combo. Reason? My K4 & KPA-1500 too compelling! $750 plus $25 UPS Insured shipping. Contact direct: H. Ca

Re: [Elecraft] K2 'CAL TPA' setting maxed out

When Windows updates it sometimes changes my KX3 settings.  Not exactly something you would think of when trying to diagnose a problem with the radio.  If your K2 is connected to Windows in any way, that might be the explanation. 73, david KC1DNY On 2/16/2024 11:58 PM, Jim KO5V wrote: Good

Re: [Elecraft] K2 'CAL TPA' setting maxed out

Hi Jim, I don't have an answer to your question, but will note that you are the 2nd person in the last month to report this issue. Thomas, WA8UNS also experienced repeated random resettings of the CAL TPA parameter to large values, often in excess of 200. He reset the parameter to the actual room

[Elecraft] K2 'CAL TPA' setting maxed out

Good Evening, As I was talking on 20M SSB tonight, my K2/100 started to get a bit twitchy when I transmitted. The power was set to just below 100W. I started seeing an intermittent 'High Current' error message, which then changed to a constant 'Hot PA' error. I have an intermittent RFI problem

Re: [Elecraft] K2 Grey

Terry, Sorry, I should have thought of that. K2ZA sent me the info: "The Elecraft part number is E980100The bottle says cardinalpaint.com (http://cardinalpaint.com) and the color is listed as “Granite”, at least the part I can see that doesn’t have the part number label covering it." 73, Jim

Re: [Elecraft] K2 Grey

Please share the information with the rest of us. 73,Terry KQ5U On Monday, February 5, 2024 at 07:36:40 PM CST, Jim KO5V wrote: Thanks to everyone who replied. I now have an Elecraft P/N, the paint manufacturer and a color name. 73, Jim  KO5V __

Re: [Elecraft] K2 Grey

Thanks to everyone who replied. I now have an Elecraft P/N, the paint manufacturer and a color name. 73, Jim KO5V __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm

[Elecraft] K2 Grey

Good Afternoon, I managed to scratch one of the side covers on my KPA100 cabinet. Does anyone know of a ready-made paint that will match the K2 color? I know I can probably get some matching touch-up paint at an automotive paint store. Thanks & 73, Jim KO5V Cedar Crest, NM ___

Re: [Elecraft] K2 TUNE power reduction without ATU installed .

To Dave and Mike I must hold my hands up and admit to starting a  " wild goose chase " . I had misinterpreted the manual and  convinced myself that the power reduction when pressing TUNE relied on an ATU being installed ... I had even proved it to myself ... if I did a TUNE at 25W , it di

Re: [Elecraft] K2 TUNE power reduction without ATU installed .

My apologies to Steve and Dave W8FGU! I re-read the KPA100 manual and learned that the K2/100 DOES reduce TX power to 20 watts when the TUNE button is pressed and the POWER control setting is above that level. I have my KPA100 integrated with a KAT100 in an outboard case rather than being install

Re: [Elecraft] K2 TUNE power reduction without ATU installed .

the power control pot. 73, Dave W8FGU -- Original Message -- From "Steve Cooke" To Elecraft@mailman.qth.net Date 1/14/2024 4:10:12 AM Subject [Elecraft] K2 TUNE power reduction without ATU installed . I've just recently bought a used K2 /100 for use at field days with my

Re: [Elecraft] K2 TUNE power reduction without ATU installed .

buttons, the KPA100 will output the power requested with the power control pot. 73, Dave W8FGU -- Original Message -- From "Steve Cooke" To Elecraft@mailman.qth.net Date 1/14/2024 4:10:12 AM Subject [Elecraft] K2 TUNE power reduction without ATU installed . I'v

Re: [Elecraft] K2 TUNE power reduction without ATU installed .

Hi Steve, There is no documented method to set a lower TUNE power when a non-Elecraft external ATU is used or when no external matching unit is present. The TUNE button on the K2 keys the transmitter at the requested TX power set by the POWER control, e.g. 100 watts, in the absence of a connected

[Elecraft] K2 TUNE power reduction without ATU installed .

I've just recently bought a used K2 /100 for use at field days with my local club ( to save my own K2 from getting hammered too much ! ) . I'd like to use it with a remote ATU  . The output of the K2/100 is reduced to 20 W with an Elecraft ATU installed and the TUNE button pressed is it po

Re: [Elecraft] OT: Elecraft K2 serial #00001 -- our very first production unit -- is looking for a new home

I too have a Field Test K2 S/N 00020 that is fully upgraded and tuned.  It has all options except the KPA100 installed.  It also has the now unavailable K2XV transceiver interface and a Keyout Jack on the rear panel.  Functionally it is equal to a newly built K2 plus options that are now longer

[Elecraft] OT: Elecraft K2 serial #00001 -- our very first production unit -- is looking for a new home

Season's greetings from the Left Coast. Hope everyone is having a great holiday! Meanwhile--with apologies for the bandwidth: K2 S/N 1 is among the early Elecraft radios I've had in cold storage. Unboxing it brought back fond memories from 1999, the year we started shipping, back when Elecr

Re: [Elecraft] K2 SSB Power Overshoot on First Syllable

Hi Karin, You've resurrected a topic that was once very active on this same Elecraft reflector: https://www.mail-archive.com/elecraft@mailman.qth.net/msg27397.html It's a long thread. I recommend skipping down if you're in a hurry to read the post by David, M0DHO: https://www.mail-archive.com/

Re: [Elecraft] K2 SSB Power Overshoot on First Syllable

n 18/12/2023 22:42, Karin Johnson wrote: Has anyone ever figured out why the Elecraft K2, either base version or with KPA100 amplifier, has a pronounced power overshoot on the first syllable using SSB. I did an internet search for this problem and did not find a lot of discussion about it. Difficul

[Elecraft] K2 SSB Power Overshoot on First Syllable

Hello Group: Has anyone ever figured out why the Elecraft K2, either base version or with KPA100 amplifier, has a pronounced power overshoot on the first syllable using SSB. I did an internet search for this problem and did not find a lot of discussion about it. Difficult to use an external high

Re: [Elecraft] K2 Sidetone help

Thanks to Don, W3FPR for the reminder on how to check the firmware version. To Mike, WA5POK: as point of reference, I checked my K2 STL setting and it's quite loud at 002 using headphones. I recommend trying a lower STL level setting than the 060 I originally suggested. I only use headphones an

Re: [Elecraft] K2 Sidetone help

The K2 firmware level will be briefly displayed if you hold a button in while powering on. 73, Don W3FPR On 10/28/2023 7:57 PM, Michael Carter via Elecraft wrote: Hi Mike, You mentioned that you jumped through all the menu hoops to no avail. Do you know which version of firmware 2.04 you hav

Re: [Elecraft] K2 Sidetone help

Hi Mike, You mentioned that you jumped through all the menu hoops to no avail. Do you know which version of firmware 2.04 you have installed? (there will be a letter after the 2.04, e.g. 2.04P or 2.04R). If you have set the sidetone level to, say, 060 and the sidetone pitch to a value between 50

[Elecraft] K2 Sidetone help

Hi All!A few months ago I acquired a used K2, s/n 13xx, firmware 2.04, and the sidetone setting is U8-2 but I do not have any sidetone and no matter which hoop I jump through in the menu system, I cannot get the sidetone to function. The radio would not let me make the change to U6-25 no matter

Re: [Elecraft] K2 VFO dial calibration and CAL PLL step…

John, With that serial number, run CAL PLL only on 40 meters after adjusting C22.  Other bands will give you an ERR 232. That should be in the manual under Calibration. Only K2s with the original (version 1.xx) firmware need to be run on each band, and there are only a few that have not upgrad

[Elecraft] K2 VFO dial calibration and CAL PLL step…

Hi All, I’m re-doing the dial calibration of my K2 #6998 which I built well over 10 years ago. I’m re-reading W3FPR’s helpful instructions but it’s been a long time since I did the initial calibration and I have a question. After completing the C22 adjustment step, does CAL PLL need to be pe

[Elecraft] K2 keyer strange behavior

Thanks, Victor, now everything is clear. I should have directed my steps to the manual first  :-) __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecraft

Re: [Elecraft] K2 keyer strange behavior

This is normal. It allows you to connect both a paddle and a hand key to the key input. Here is the explanation from p. 99 "CW Operation" of the K2 manual: External Keying Auto-Detect: If you wish to connect a handkey, external keyer or computer along with a keyer paddle, you can use the K2’s "

[Elecraft] K2 keyer strange behavior

The keyer in my K2 behaves strangely. It works properly in both Iambic A and Iambic B modes as long as you don't press both paddles at the same time.  On the other hand, if you squeeze/press both levers exactly at the same time, the keyer works like a manual mode "key down" - there are no dots a

[Elecraft] K2 Transceiver Kit Wait Time

I am finally about to place my order for the K2 Transceiver Kit. Can anyone give me some guidance as to how long I might have to wait? I know shipping is delayed due to parts delays. Has anyone received a kit recently? Are parts arriving in trickles and orders being shipped in trickles, or are t

Re: [Elecraft] K2 FOR SALE

Serial # 066XX This serial number is new enough to have all the factory mods. INSTALLED KSB2 – SSB Module K160RX - 160M RX Module KNB2 - Noise Blanker Module KBT2 – Internal Battery Assembly W/Battery KIO2 – AUX I/O Module KDSP2 – Internal DSP Filter and Real-Time Clock Module MC-43S - Microphone

Re: [Elecraft] Fwd: Elecraft K2 serial number 7699

Allan, Just as I indicated in my last post, set L30 slug midway and then adjust the spacing of the red turns on T5 until you get close to 6 volts, and then adjust L30 to finish up. 73, Don W3FPR On 10/3/2023 6:16 AM, Allan Forster wrote: Hi, I received a replacement variable inductor (L30)

[Elecraft] Fwd: Elecraft K2 serial number 7699

message: From: Allan Forster Date: 25 September 2023 at 14:21:18 BST To: elecraft@mailman.qth.net Subject: [Elecraft] Elecraft K2 serial number 7699 Sorry, made a mistake and used the wrong frequency while attempting to set up the VXO. Now the voltage at R30 is 4.3volts and does not change when

Re: [Elecraft] Elecraft K2 serial number 7699

Allan, Contact k2supp...@elecraft.com about that problem - in the meantime, do not wear out the core of L30, just set it to about the halfway location. Instead compress or spread the red turns of T5 to see if you can obtain the proper R30 voltage. It is not likely that L30 is the fault, but r

[Elecraft] Elecraft K2 serial number 7699

Sorry, made a mistake and used the wrong frequency while attempting to set up the VXO. Now the voltage at R30 is 4.3volts and does not change when adjusting L30. Previous post ‘ I have got to the VCO alignment stage of aligning my K2. I have got 7.4 volts on R30, this does not change when turnin

[Elecraft] Elecraft K2 serial number 7699

Hi, I have got to the VCO alignment stage of aligning my K2. I have got 7.4 volts on R30, this does not change when turning the core in L30. The core moves but does not appear to move up or down so I suspect that the VCO inductor is damaged. Does anyone know where I can get a replacement? Rega

Re: [Elecraft] K2 Band Data

As far as I know, the transceivers have Auxbus (K2, K3, K4, but not K1). Not sure if the KX transceivers bring it out to a connector, though. The KPA500 sends data out to the transceiver using Auxbus, but does not listen, the KAT500 only receives data. The KPA1500 does both. I believe you are us

Re: [Elecraft] K2 Band Data

On 9/1/2023 7:21 PM, Michael Carter wrote: One clarification on the AUXBUS signal: the 'auxbus' is Elecraft's proprietary 1-wire signaling scheme by which the main MCU on the K2 Control board talks to all of the other controller ICs on the various option modules and the I/O controller (relay driv

Re: [Elecraft] K2 Band Data

Hi Jerry, I had forgotten about the KRC2, Elecraft's universal band decoder/relay driver unit, so thanks to Jack, W6FB for reminding us. The K2 uses five separate filter sections (both for bandpass and lowpass selection), and these do double duty for adjacent ham bands. From my brief inspection

Re: [Elecraft] K2 Band Data

I see that the aux bus cable - for PC connection - is documented. Looks like pin 1 is the shell, pin 2 & 3 are the RXD and TXD, and pin 5 is the common. And the protocol is async RS-232 4800 baud, 2 stop bits. That part is the standard CAT interface. There are several MCU based band decoders

Re: [Elecraft] K2 Band Data

Jerry, I also would encourage you to look at the KRC2 for your solution. It will provide BCD band output as well as individual outputs for each band.  Use whatever is compatible with you amp. The K2 on its own does not provide external band data except by decoding the propriety AUXBUS data.  T

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