Re: [Elecraft] K2 w/KPA100 power resets after approximately 2 hrs of turn-on time

Jim, "the issue happens even if I haven't been transmitting" Does that mean you can just turn it on, leave it in receive mode, and it turns off? If so, you have a problem with the power circuits in the base K2 or the components that feed the base K2 from the 12 volt power in the KPA100. First

[Elecraft] K2 w/KPA100 power resets after approximately 2 hrs of turn-on time

I originally posted this in July and I still have the problem. The issue is as described below past the dashed line. Note that the issue happens even if I haven't been transmitting. Don Wilhelm helped me attempt to troubleshoot the issue. We eliminated the base K2 as the source. After that, at

Re: [Elecraft] K2 w/KPA100 power resets after approximately 2 hrs of turn-on time

Try checking solder connections in the lowpass filter area of the kpa100, especially the toroid leads. Often bad connections produce temperature-related problems. Vic 4X6GP/K2VCO > On 13 Nov 2015, at 3:27 AM, wa4ywm wrote: > > I originally posted this in July and I still

[Elecraft] Elecraft K2/10, KPA100-KAT100 in EC2

Elecraft K2/10, KPA100-KAT100 in EC2 - SOLD - Thanks . 73, W7BV __ 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

[Elecraft] Elecraft K2/10, KPA100-KAT100 in EC2

Elecraft K2/10, KPA100-KAT100 in EC2 F/S PRICE REDUCED: Elecraft K2 10 watt 160-10 meter transceiver with the KPA100 100 watt internal amplifier and KAT100 internal auto antenna tuner in a separate matching EC2 case. . For pictures, see listing on www.eham.net. The units when separated return

[Elecraft] F/S Elecraft K2/10, KPA100-KAT100 in EC2

F/S; Elecraft K2 10 watt 160-10 meter transceiver with the KPA100 100 watt internal amplifier and KAT100 internal auto antenna tuner in a separate matching EC2 case. For pictures, see listing on www.eham.net. The units when separated return the K2 to a 10 watt QRP rig. The rig is in excellent

Re: [Elecraft] K2 remote KPA100 / KAT100?

Andrew, The same question was asked on May 5, and here is how I answered. Hope you find this info helpful. --- I do not have the website information, but I think I can describe it on words - it is not that difficult. If you are

[Elecraft] K2 remote KPA100 / KAT100?

There used to be some sites that described how to put a KPA100 and KAT100 in a remote EC2 enclosure for the K2, but I can't find these anymore. Can anyone point me to the info? Thanks 73, --Andrew, NV1B .. __ Elecraft mailing list Home:

[Elecraft] [K2] Intermittent KPA100 not inst and Info 080 issue - Humidity??

In the last couple of months I diagnosed and fixed a problem with the KPA100. There were two failures -- one was U6 -- EL5146C which was shorted internally and kept the KPA100 microprocessor from receiving the +5 volts it required. The second were failures in the 1N5711 Schottky diodes D16 and

Re: [Elecraft] [K2] Intermittent KPA100 not inst and Info 080 issue - Humidity??

Bill, Combining the not inst message with the Info 080 are indicators that you likely have a problem with the KAT100. I would first open the bottom and look carefully and critically at the soldering, particularly in the front corner where the firmware IC is located. If your K2 is sensitive

[Elecraft] K2: Remoting KPA100 and KAT100 - how many KIO2 needed?

I'm planning to remote a KPA100 and KAT100 from my existing K2/10, which has no KIO2 module. I believe a KIO2 comes with the KPA100. Do I need yet another KIO2 to make this work? Does one come with the KPA100 as well? Sorry for the FAQs... --Andrew, NV1B

Re: [Elecraft] K2: Remoting KPA100 and KAT100 - how many KIO2 needed?

Andrew, The KPA100 contains the same function as the KIO2 on its circuit board. The RS-232 part will not function when the KPA100 is mounted remotely. However, you have to provide a path for the internal K2 signals to communicate with the external equipment - IMPORTANT - those are NOT RS-232

[Elecraft] K2 FS: KPA100 and KAT100

My K2 has become my primary field radio for activations in Summits On The Air and I really have no need for the KPA 100 100W amp and KAT100 100W autotuner anymore. I thought I'd offer them here first. The KPA100 is the K2-installed version replacing the standard K2 top. Takes about 3 mins, at

[Elecraft] FS :elecraft K2 with KPA100 and KAT100 in EC2

Complete Elecraft Radio Station including: Elecraft K2/ SN 5348 including KSB2, KNB2, KDSP2, K160m, KIO, K2BAT, K2ATU for use as a QRP station -- and-- the KPA100 and the KAT100 are in a separate EC2 case. So you can easily upgrade to 100W by connecting the K2 to the EC2 box including the 100W

[Elecraft] [K2] FS: KPA100 KAT100-1

I have the following items for sale. KPA100 $300 (shipping within US included) KAT100-1 $180 (shipping within US included) Both items for $470. Both items are in excellent condition and work correctly. I am keeping my twelve year old K2 but selling these items to help finance a K3. Pictures

[Elecraft] [K2] FS: KPA100 KAT100-1

Both items have been sold. Thanks! 73, Pat K0PC I have the following items for sale. KPA100 $300 (shipping within US included) KAT100-1 $180 (shipping within US included) Both items for $470. Both items are in excellent condition and work correctly. I am keeping my twelve year old K2 but

Re: [Elecraft] [K2] Remote KPA100 Bias Current Adjustment

Hi Don, Perhaps against my better judgement, I adjusted the bias current of the KPA100 in the KAT100-2 remoted from the K2. Now I'm thoroughly confused! :-( The current measurements of the KPA100 in the K2 make sense to me: Power 11 W, Current ~ 380 mA Power 11 W, Current ~ 520 mA Power 11 +

Re: [Elecraft] [K2] Remote KPA100 Bias Current Adjustment

Brian, Don't worry about the fan - so set it to nor. Observe the current into the KPA100 and add 400 ma. That is your target for the initial collector current. Take the KAT100 out of the picture for this adjustment - unplug the AUX DC cable from the KAT100. When you go to CW TEST mode

[Elecraft] [K2] Remote KPA100 Bias Current Adjustment

Hi all, I recently completed a KPA100 and initially did the testing in my K2 as a K2/100. The ultimate goal, however, was to remote it in a EC2 enclosure with a KAT100-2. The KPA100 is now successfully integrated with the KAT100-2. The question: should I redo the bias current adjustment now

Re: [Elecraft] [K2] Remote KPA100 Bias Current Adjustment

Brian, If the PA idling current was adjusted to 400 ma (increase over RX current), then the KPA100 bias should be correct whether operated in the base K2 enclosure or in a remote enclosure. In other words, it should make no difference whether it is mounted on the base K2 or in an external

Re: [Elecraft] [K2] K2, KPA100, N-GEN, W1 Construction Blog

] [K2] K2, KPA100, N-GEN, W1 Construction Blog To: elecraft@mailman.qth.net Message-ID: 1295395071978-5937734.p...@n2.nabble.com Content-Type: text/plain; charset=us-ascii Builders may find some of the text and a lot of the pictures posted at http://build-k2.blogspot.com http://build-k2

Re: [Elecraft] [K2] K2, KPA100, N-GEN, W1 Construction Blog

completed a KPA100 for K2 # 7006. __ 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

[Elecraft] [K2] K2, KPA100, N-GEN, W1 Construction Blog

Builders may find some of the text and a lot of the pictures posted at http://build-k2.blogspot.com http://build-k2.blogspot.com to be helpful. I tracked my kit-building activity from late July, 2010, through today. As of today, my K2/100 is up and running ... a very satisfying feeling! 73 -

Re: [Elecraft] [K2] K2/KPA100 build for K2-7006

Thanks Richard (AD7FZ) for the replacement parts. Elecraft rocks! 73, David AJ4TF On Mon, 2011-01-10 at 00:22 -0500, david wrote: So far so good. The KPA100 passed the first functional test without issue. The only thing I have run into is that I was missing one small capacitor, and one

[Elecraft] [K2] K2/KPA100 build for K2-7006

So far so good. The KPA100 passed the first functional test without issue. The only thing I have run into is that I was missing one small capacitor, and one of the toroid cores was cracked... I didn't notice it until I started winding it and it fell apart. The Elecraft parts department has an

Re: [Elecraft] [K2] K2/KPA100 build for K2-7006

I'm sure you will get a replacement, but be aware that you can super-glue a broken toroid together and it will work fine. Worth knowing for emergencies or if you live in Bhutan. On 1/9/11 9:22 PM, david wrote: So far so good. The KPA100 passed the first functional test without issue. The

Re: [Elecraft] K2-7006 KPA100 is on the way

:24:58 AM 主題： [Elecraft] [K2] K2-7006 KPA100 is on the way Thanks for a great product, Elecraft. I'm sure the KPA100 will make it even better! David Macchiarolo AJ4TF __ Elecraft mailing list Home: http://mailman.qth.net

Re: [Elecraft] K2-7006 KPA100 is on the way

...@arrl.net 收件人﹕ elecraft@mailman.qth.net 傳送日期﹕ 2011/1/4 (二) 8:24:58 AM 主題： [Elecraft] [K2] K2-7006 KPA100 is on the way Thanks for a great product, Elecraft. I'm sure the KPA100 will make it even better! David Macchiarolo AJ4TF

[Elecraft] [K2] KAT100 + KPA100 power supply in EC2

I have built the KAT100 and KPA100 into a custom EC2 housing and it is working very well, there is only one little problem in the setting which I do not like. The combo needs two power supply cables, one for the high current into the KPA100 (Anderson connectors) and one for the KAT100

Re: [Elecraft] [K2] KAT100 + KPA100 power supply in EC2

Werner, Do you have the header for the AUX DC cable from the KPA100 installed in your KAT100? In other words, do you have the KAT100-2? If so, there is no need for the power cable to the KAT100, it will be powered from the cable to the KPA100. 73, Don W3FPR On 1/4/2011 11:07 AM, Dr. Werner

Re: [Elecraft] [K2] KAT100 + KPA100 power supply in EC2

hi Don, Gary, Bill, Don Wilhelm schrieb am 4 Jan 2011 um 13:47: Do you have the header for the AUX DC cable from the KPA100 installed in your KAT100? In other words, do you have the KAT100-2? If so, there is no need for the power cable to the KAT100, it will be powered from the cable to

Re: [Elecraft] [K2] KAT100 + KPA100 power supply in EC2

Werner, From prior photos that I have seen, you have great milling capabilities, but the KPA100 speaker is exposed through the heatsink (no need for any milling). The only problem for using the KPA100 speaker is that you have to run a separate cable for the speaker (and provide an input

[Elecraft] K2-7006 KPA100 is on the way

寄件人﹕ david aj...@arrl.net 收件人﹕ elecraft@mailman.qth.net 傳送日期﹕ 2011/1/4 (二) 8:24:58 AM 主題： [Elecraft] [K2] K2-7006 KPA100 is on the way Thanks for a great product, Elecraft.  I'm sure the KPA100 will make it even better! David Macchiarolo  AJ4TF

[Elecraft] K2-7006 KPA100 is on the way

Hi David, I built the KPA100 for #6998. It went together very easily, but took longer than I imagined. It's a fairly compact board and quite fiddly in parts, but there were no unexpected hitches and it fired up first time and has gone like a dream since. I also needed a fairly hefty iron

Re: [Elecraft] [K2] FS: KPA100/KAT100 in EC2 Enclosure

Setting a price is a bit difficult for me Maybe I can help. A similar unit just sold on this list for $375 shipped. http://elecraft.365791.n2.nabble.com/FS-KPA100-KAT100-in-EC2-inclosure-td5381284.html#a5381284 I can determine that to buy the kit new from elecraft, unassembled, would cost

[Elecraft] [K2] FS: KPA100/KAT100 in EC2 Enclosure

I've decided to offer up for sale the KPA100/KAT100/KIO2 I built in an EC2 enclosure earlier this year. I built this setup to augment my K2 (QRP CW only) when I'm at my home station. The setup works very well, but I find that I'm operating CW QRP almost exclusively, so I don't see leaving

Re: [Elecraft] [K2] K2: KPA100 transmitted audio distortion 80 meters

Even though I have little helpful to report, I felt I should post the outcome. In short, my KPA100 had a spontaneous and unexplained recovery from its 80 meter distortion. The audio as monitored by another receiver, while transmitting into a dummy load, is now absolutely without audible

Re: [Elecraft] [K2] K2: KPA100 transmitted audio distortion on 80 meters

Please ignore this email respond to email of same title yesterday. I apologize for duplication, but I thought my earlier email was lost. K0KK radiotelegrapher wrote: On 80 meters only, I have moderate distortion of transmitted SSB ouput from my KPA100. It's not RF in shack or antenna

Re: [Elecraft] [K2] K2: KPA100 transmitted audio distortion 80 meters

Don, It's good to see you're still carrying out your much appreciated good work here. I'd been away from this forum for a a couple years. I changed R4 back to 100K. Dressing the ribbon and speaker cables doesn't help. Right now the KPA100 is outside the K2, on it's back, and cables are

Re: [Elecraft] [K2] K2: KPA100 transmitted audio distortion 80 meters

Dick, Before doing anything drastic like swapping out K2 or parts of them, might I suggest that you may have a problem with RF-in-the-shack on 80 meters. Since you do not have the problem on other bands, that is high on the suspect list. Just for a test, connect a 66 foot wire to the back of

[Elecraft] K2 and KPA100

I've had my K2 (6113) for two years now and it has pretty much become my primary rig. I work mostly CW. I have worked some SSB with it and have been given some good unsolicited audio reports. Sometimes I would like to have a little more power for SSB which is why I am now considering

Re: [Elecraft] K2 and KPA100

Gary, I have the KPA100.  It meets and exceeds my expectations.  It is a fun kit to build and it is fun to integrate into the k2.  It is tough and have used in on CW and SSB in contest mode. I would suggest also, that you build a small 10 db audio amplifier to help drive the K2 a little

Re: [Elecraft] K2 and KPA100

Gary: I couldn't be happier with my K2/100. It went together easily and has performed flawlessly in the month or so I have had it. You really lose nothing by installing it, as you can still turn the power down to whatever level you chose. On air reports have been excellent and the

Re: [Elecraft] K2 and KPA100

Yep. It works great, no pain no strain no hassle of any sort. It drops off line as the power is reduced back into the range of the basic K2. If you have your K2 set up with the battery pack and/or KAT2 mounted in the top cover, going QRP with the battery or tuner installed is an fast, easy swap

Re: [Elecraft] K2 and KPA100

Lee K0WA wrote: I would suggest also, that you build a small 10 db audio amplifier to help drive the K2 a little harder with your mic. You can use a 2N amplifier and run it off 9 volt battery. Works quite well for me and helps give a little more to the SSB signal. Remember, don't over

Re: [Elecraft] K2 and KPA100

; 'Elecraft Reflector' elecraft@mailman.qth.net Sent: Tuesday, October 20, 2009 4:26 PM Subject: Re: [Elecraft] K2 and KPA100 Lee K0WA wrote: I would suggest also, that you build a small 10 db audio amplifier to help drive the K2 a little harder with your mic. You can use a 2N amplifier

Re: [Elecraft] K2 and KPA100

Robert, That statement is not a consideration for the KPA100 or without the KPA100. The additional mic gain *may* be required for *some* microphones - most notably those with Heil HC4 or HC5 elements which have about 10 dB less output than most other ham microphones. Other low output dynamic

[Elecraft] k2 KPA100/KPA100 schottky diodes

Is there any reason to choose one specification over another for the 1N5711's which are found in the KPA100 and KAT100? The ones currently being shipped appear to be GTE's vs whatever the kits came with in 2006. I had thought that the frequent frying of these diodes on my k2 was due to

Re: [Elecraft] k2 KPA100/KPA100 schottky diodes

John - A 1N5711 is pretty much the same from any manufacturer, but instead of addressing the repair, let's address the actual problem, which is static buildup on the antenna itself. You might try a RF choke, perhaps somewhere between 1 and 5 milli-henries (mH), from the antenna base

Re: [Elecraft] k2 KPA100/KPA100 schottky diodes

I would put a high-value resistor - 10K or more - from the vertical to ground. That should dissipate the static buildup AOK. Jerry W4UK At 01:48 PM 8/19/2008, [EMAIL PROTECTED] wrote: Is there any reason to choose one specification over another for the 1N5711's which are found in the KPA100

Re: [Elecraft] k2 KPA100/KPA100 schottky diodes

A proper static discharge path to ground is essential in all antennas likely to see a high E field, which in areas with thunderstorms really means all antennas. The RF choke is probably the easiest way to ensure a low DC impedance - connect it across the centre of a dipole or from a vertical

[Elecraft] [K2] FA: KPA100 KAT100 in EC2 remote enclosure

Now that I have my K3/100, I cannot justify keeping my KPA100 and KAT100, so I have reluctantly put them up for auction on eBay. (The K2 itself will go to the grave with me!) They are neatly packaged in an EC2 enclosure which can be quickly connected and disconnected from the QRP K2. Please

[Elecraft] K2 - REMOTE KPA100/KAT100

K2 6442 is working fine and I was able to make a number of contact on Field Day using an antenna hung from a crane at 103 feet. However, success at home has been frustrating as I am in a hole, in a valley, at the low end of the sun cycle, in a community that does not allow antennas. Currently,

Re: [Elecraft] K2 - REMOTE KPA100/KAT100

Chris, Installing the KPA100 and KAT100 together in an EC2 enclosure is really easy. Order the KAT100-2 and you will have all the components needed to connect the KPA100 into the KAT100 board. You will need a cable to connect from the KIO2 to the KPA100 (or the KAT100) DE9 AUX I/O

Re: [Elecraft] K2 - REMOTE KPA100/KAT100

Chris - I built up the KPA-100 / KAT-100 combo earlier this year. I second Don's comments, and have a few more: Build and test the KAT-100 first. Get the KAT-100-2 version which has the larger enclosure. If you are installing the KAT-100 and the KPA-100 in a separate enclosure,

Re: [Elecraft] K2 - REMOTE KPA100/KAT100

Chris - I also remember something about increasing the current carrying capabilities of the RFC on the KIO2 board. I think the recommendation was to build a new choke from several turns of #24 or #26 wire threaded through a spare toroid core. You will probably have one laying around

Re: [Elecraft] K2 - REMOTE KPA100/KAT100

Jim, The short RF Input coax on the KPA100 is still needed, it plugs into the KAT100 board to receive the input RF that is attached to the KAT100 Aux RF input. The BNC to BNC cable is entirely on the outside and connects to the KAT100, not the KPA100. The KAT100 Aux RF input is only used

Re: [Elecraft] K2/100 KPA100: Cannot Adjust tPA, Stuck at 0C

Hi Don, all, Thanks for the help suggestions. Pin 5 of U1 is 0.6v but CAL tPA cannot be adjusted. Looks like the MCU on the KPA100 is faulty. I've ordered a new one. 73 Ian G4FSU On 10/04/2008, Don Wilhelm [EMAIL PROTECTED] wrote: Ian, Put the K2 into CW test mode (in CW, press and

[Elecraft] K2/100 KPA100: Cannot Adjust tPA, Stuck at 0C

After repeating the power calibration on my K2 KPA100 due to low output power, I found the CAL tPA function had reset to 0C and can no longer be adjusted. Having pressed EDIT from the CAL tPA display, the display shows tPA 0C, but turning the VFO knob has no effect on the display, it remains

Re: [Elecraft] K2/100 KPA100: Cannot Adjust tPA, Stuck at 0C

Ian, Put the K2 into CW test mode (in CW, press and hold the MODE button), set the power level to something above 11 watts - press TUNE and measure the voltage at KPA100 U1 pin 5. The voltage will normally be close to 0.6 volts. If the above measurement is correct and you still cannot

[Elecraft] K2 Remote KPA100

Hello all, Before I start to look in the manuals... Do I need the KIO2 module when I want to use my KPA100 in a separate enclosure? Do I need more then that? Thanks in advance 73's, Evert PA2KW ___ Elecraft mailing list Post to:

Re: [Elecraft] K2 and kpa100

Scott, That problem is caused by a failure of the power output from the KPA100 to be reported back to the K2 microprocessor. Check the wattmeter section of your KPA100. First check to be certain T4 is installed correctly (check the color of each lead), and be certain that the leads are

[Elecraft] FS Elecraft K2 plus KPA100

Hi. My interests have changed and I am selling my K2 station which consists of a complete K2 (s/n 549) plus the KPA100. The top covers can be swapped to either operate the conventional low power K2 with antenna tuner and battery, or use the KPA100 for a 100 watt station. I bought the

[Elecraft] K2 #5436 - KPA100

Initial test voltages on pg 23 of KPA100 manual test points are off, where to start troubleshooting? U1 pin15 = 5.53v should be 0, pin20=0v should be 5v, pin27=0v should be 5.8v, pin28=0v should be 5.7v, Also U4 pin11 = 0v should be 5v, U6 pin6=4.96v should be 0-.5v. All other pins test within

RE: [Elecraft] K2 #5436 - KPA100

Ed, Check your soldering - especially around U1. Pins 1 and pin 20 should be connected together, so if you have a proper 5 volts at pin 1 and zero volts at pin 20, you must have a soldering problem. Your soldering should flow out to a smooth edge on both the solder pad and the component lead