Re: [Elecraft] KAT100 HELP NEEDED

Eric, What DOES happen?  Do the ANT1 and ANT2 lights illuminate and change when you press the K2 ANT switch? Are there any lights in the SWR LEDs when you attempt a TUNE? If the answer is no to either of those questions,, dig out your DMM and take the top cover off the KAT100. Measure the 2 o

Re: [Elecraft] KAT100 stopped working

Hans, First of all, check to see if you have power to the KAT100 - you should have 12 volts on both ends of RFC2. If that is correct, check to be certain there is +5 volts at pin 2 of U2, U3 and U4. If all is well so far, suspect that either the MCU (U1) or U2, U3 and U4 have failed. 73, Don

Re: [Elecraft] KAT100 memory question

Oooops I misread your email. You are asking about the KAT100 in the radio. I read as KAT500. Download the KAT500 manual and I believe segments are the same for both ATUs. And “learning” process is the same. Sent from my iPhone ...nr4c. bill > On Aug 21, 2020, at 2:41 PM, Mike

Re: [Elecraft] KAT100 memory question

I read Recision D on the website and didn’t see anything in that one either. Thanks, Mike NJ2OM > On Aug 21, 2020, at 11:48 AM, Mike Kopacki wrote: > > Guess I missed that! Checking now. > > Hmm. Bill, I just paged thru the entire manual and there is no mention of > what you’re saying.

Re: [Elecraft] KAT100 memory question

Guess I missed that! Checking now. Hmm. Bill, I just paged thru the entire manual and there is no mention of what you’re saying. Is it possible you have a newer manual? This one is Revision C, March 12, 2003. Thanks, Mike NJ2OM > On Aug 21, 2020, at 11:30 AM, Nr4c wrote: > > Read the

Re: [Elecraft] KAT100 memory question

Read the manual. There is a list of the frequency segments that can be stored in the memory. It’s near the back of the manual. Most bands are 20KHz segments, so many for each band. Sent from my iPhone ...nr4c. bill > On Aug 21, 2020, at 8:47 AM, NJMike wrote: > > The KAT100 manual says th

Re: [Elecraft] KAT100 discontinued, will the K2 kit last much longer?

So much can happen in 3 years especially when talking about retirement ages and I’d be inclined to buy the K2 now and build it now if that is a viable option and it really is high on the bucket list. Paul W6PNG/M0SNA www.nomadic.blog > On May 28, 2020, at 3:23 PM, Fred Jensen wrote: > > Yo

Re: [Elecraft] KAT100 discontinued, will the K2 kit last much longer?

You might want to have your wife purchase the K2 kit now and hide it from you as a retirement present in 3 years.  The K2 will likely remain available for as long as the parts supply chain is intact.  No way of knowing when that may end but the K2 is around 20 years old. 73, Fred ["Skip"] K6DG

Re: [Elecraft] KAT100 General Failure

Jonathan, That is a great discovery. Yes, if U5 was getting hot it would be dragging down the 5 volt supply and causing U1 to not function. 73, Don W3FPR On 1/4/2020 12:18 PM, Jonathan Taylor, K1RFD wrote: Don, Z1 is resonating away, but in the course of verifying that, I noticed that the U

Re: [Elecraft] KAT100 General Failure

Don, Z1 is resonating away, but in the course of verifying that, I noticed that the U5 op-amp was getting hot to the touch. I replaced it, and now all is working normally. Perhaps it was loading down the 5V supply excessively. I'm guessing that U5 made the ultimate sacrifice in the same inciden

Re: [Elecraft] KAT100 General Failure

Jonathan, Yes, replacing KAT100 U1 would be the prudent first step.  But if you can, first determine if the resonator Z1 is providing clock pulses to U1 pins 13 and 14.  Without those clock pulses, U1 will not be functional. If you have a local ham who also has a KAT100, see if you can swap U

Re: [Elecraft] KAT100 General Failure

Thanks Don. I had the same thought about U1, but unfortunately the symptoms remain after re-seating it a couple of times. Regarding AUXBUS, I believe continuity is good, since a logic probe on the KAT100 side shows activity when certain K2 controls are manipulated such as Power, Tune, and Band. I

Re: [Elecraft] KAT100 General Failure

Johnathan, Since the KAT100 is not recognized in the K2 menu, you either have a problem with the KAT100 firmware, but do check the cable for continuity of the AUXBUS signal that is used to communicate among the various pieces of firmware ICs throughout the K2 system. Since the KAT100 has not

Re: [Elecraft] KAT100 Tuner

Don Thanks On 2019/05/26 21:25, Don Wilhelm wrote: The KAT100 ATU needs the control signals from the base K2 to turn on and function. So the answer is that it will only function with the K2. Yoou might consider the KAT500. 73, Don W3FPR On 5/26/2019 5:39 AM, Yoshida Akira wrote: Hi all D

Re: [Elecraft] KAT100 Tuner

The KAT100 ATU needs the control signals from the base K2 to turn on and function. So the answer is that it will only function with the K2. Yoou might consider the KAT500. 73, Don W3FPR On 5/26/2019 5:39 AM, Yoshida Akira wrote: Hi all Does KAT100 ATU work with transceiver other than K2 ? T

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

Bill, With that evidence, I would arbitrarily replace Z1.  Those 4MHz resonators are inexpensive. 73, Don W3FPR On 9/5/2018 2:42 PM, Bill Coleman wrote: OK, a final follow-up on this. Since the 12CTRL signal resulted in 5V power at the regulator immediately, I racked by brain trying to fig

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

OK, a final follow-up on this. Since the 12CTRL signal resulted in 5V power at the regulator immediately, I racked by brain trying to figure out why The KAT100 would fail to light the LEDs for seconds, sometimes tens of seconds. I decided the problem might have to do with the U1 clock. I put a

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

I’ve confirmed that 5V power on the output of U8 comes up IMMEDIATELY when the K2 is switched on. Q2 seems to be doing it’s job. However, the KAT100 will sit there without any LEDs for a while, sometimes seconds. I’m beginning to wonder if Z1 is not oscillating right away. I need to check that.

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

Bill, The AUXBUS is NOT at fault. The parts to concentrate on are shown in the lower left corner of sheet 2 of the KAT100 manual.  Something there is not working reliably.  My first guess would be Q2, but it could be something else associated. That entire powering circuit is controlled only b

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

OK. I could use a little more help with this issue. Let’s re-cap where we are. Issue: KAT100 doesn’t always turn on right away. When it does this, it may or may not switch low/high power LEDs when the power control is rotated. Pressing Ant 1/2 or Tune, the K2 will indicate “not inst”. Sometime

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

Bill, Are you looking at the K2 MCU firmware or the KAT100 firmware? The KAT100 firmware currently is 1.05, and the 1.04 should work OK. If you looked at the K2 firmware (hold any button while powering on and it will be briefly displayed), then the level to support the KAT100 must be 2.03d or

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

Sadly, I have no old PIC chips for the KAT100 in my inventory. It came out of the box with the 1.04 firmware (which isn’t the latest, but I don’t have the K60XV, either.) I do have a second DB9 cable I can try, if I can find it. > On Aug 6, 2018, at 7:05 AM, Bill Coleman wrote: > > I pulled

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

I pulled out the KAT100 PIC chip and re-inserted. No change. I can confirm that transition ARE reaching Pin 40 on the KAT100 PIC chip. I see roughly three bursts. Two come shortly after turn-on, the third comes a second later. I think you’d need a storage scope or logic analyzer to reverse en

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

That’s not the way Elecraft recommends. The KAT100 contains an electronic switching mechanism. Power must be present at the KAT100 coaxial connection before the K2 is switched on. The KAT100 uses the 12CTRL voltage from the DB-9 connector to turn on it’s internal supply. > On Aug 5, 2018, at 7:

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

I would configure the station power such that the tuner is powered from the switched source on the radio. Thus the power supply is on first and then the radio is turned on and powers the tuner at the same time. Bob, K4TAX Sent from my iPhone > On Aug 5, 2018, at 6:02 PM, Don Wilhelm wrote

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

Bill, If it were a bad PIC chip, the results would be consistent. Reseat the KAT100 firmware Ic to clear away oxidation. Look for a flaky connection on the Control cable - at both ends. There is not much that you can diagnose with a 'scope other than to determine that the chip is getting tran

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

Jack screws appear to be tight on both ends. After I cycle the power 6-12 times, it will eventually come up. I wonder if I have a bad PIC chip in the KAT100. I may try an older version of the firmware, I think I have one. That will take a few days. I can put a scope on Pin 40 of the PIC chip.

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

Bill, Fine on the power sequence, but the Not Inst message indicates that either the Control Cable to the K2 is not fully plugged in (check both ends) or the cable has a bad connection, or that the firmware in the KAT100 is not being recognized. You should tighten the cable jackscrews to che

Re: [Elecraft] KAT100 - Reluctant to come on, K2 often displays "not inst"

Yes, I have a cable that has the PowerPole connections to the K2/100, and a separate coaxial jack for the KAT100. I switch the power supply on, which means the KAT100 has power, then switch the K2/100 on, which powers up the combo. So, yeah, I have power applied to the KAT100 before the K2. >

Re: [Elecraft] KAT100 issue

Mike, I would believe that diodes D1 and D2 in the KAT100 have been damaged by a nearby lightning surge. If that is not the cause, then the firmware IC may be damaged. BTW, it will not tune correctly the way it is. The diodes are 1N5711 type Elecraft p/n E560004. I would get 4 of them. I

Re: [Elecraft] KAT100-1 and 2 Discontinued

The KAT100-1 is now properly on the order section of the webpage and the shipping status page. I did not check further. Yes, the shipping status properly shows the KAT100-2 as discontinued, but the KAT100-1 is listed as In Stock right above that item. The K2 will ship soon after the new part

Re: [Elecraft] KAT100-1 and 2 Discontinued

Looks like the KAT100-1 is back on the order page. I had to refresh the browser to see it. That's good news. Gary Watson On Tue, Mar 20, 2018 at 10:06 PM, Don Wilhelm wrote: > The KAT100-1 is still shown on the Products page. > > 73, > Don W3FPR > > On 3/20/2018 10:10 PM, George Winship, NC5

Re: [Elecraft] KAT100-1 and 2 Discontinued

The KAT100-1 is still shown on the Products page. 73, Don W3FPR On 3/20/2018 10:10 PM, George Winship, NC5G wrote: I hope you are right, Don. The shipping status page shows both the 1 and 2 discontinued. And neither one is on the order page. I built my K2 in 2001 and later added the amp, K

Re: [Elecraft] KAT100-1 and 2 Discontinued

I will contact the folks at Elecraft tomorrow to see why the KAT100-1 has disappeared from the website. Perhaps it was an error. 73, Don W3FPR On 3/20/2018 10:10 PM, George Winship, NC5G wrote: I hope you are right, Don. The shipping status page shows both the 1 and 2 discontinued. And ne

Re: [Elecraft] KAT100-1 and 2 Discontinued

I hope you are right, Don. The shipping status page shows both the 1 and 2 discontinued. And neither one is on the order page. I built my K2 in 2001 and later added the amp, KAT100, etc. It has been one of the most fun things that I have done in this hobby. And it is still the main radio in th

Re: [Elecraft] KAT100-1 and 2 Discontinued

Gary and all, The KAT100-1 is still available, it was the EC2 enclosure which was discontinued, and that is the reason the KAT100-2 was also discontinued. You cannot build the KAT100-2 without the enclosure. 73, Don W3FPR On 3/20/2018 8:32 PM, Gary Watson wrote: This may be old news, I searc

Re: [Elecraft] : KAT100 failure

Jean, If you have measured the antenna with your antenna analyzer, it should be OK. First check diodes D1 and D2 in the KAT100. If those are good, then turn to page 28 in the KAT100 manual and do the SWR Bridge Null adjustment and the Power Calibration (page 29) If you still have problems,

Re: [Elecraft] KAt100 power on question

The KAT100 needs both the 12 volt power connection *and* the 12CTRL signal from the K2 to power itself on. So yes, you need the control cable plugged from the base K2 (or KPA100) to the KAT100 before you will see any lights. The control cable is shown in the KAT100 manual. 73, Don W3FPR On 5

Re: [Elecraft] KAt100 power on question

Made the same mistake. You need both power cables hooked up: one to the KAT100 and one to the K2. You can use a 'Y' cable to power both. Brian KB1VBF Sent from my iPad > On May 25, 2016, at 8:47 PM, mjpilgrim wrote: > > I recently purchased a used KAT100. Not sure how to interpret a possibl

Re: [Elecraft] KAT100 IN EC2 ENCLOSURE

Jerry, If you set the power to 40 watts as I asked, you should not have 120 watts output with TUNE. First you have to fix that power control problem. The most likely cause of that is the wattmeter diodes D16 and D17 in the KPA100. They are 1N5711 diodes, and you should order 4 of them so you

Re: [Elecraft] KAT100 IN EC2 ENCLOSURE

Good Morning Don: I did as you instructed.  On 40 meters the watt meter is reading 120 watts. I have 1 LED showing on the tuner.  The display on the K2 shows 52 wattsand 1.1-1  SWR As I change bands,  the results change.   The higher bands are showing less power out and SWR up to  1.5-1.. The

Re: [Elecraft] KAT100 IN EC2 ENCLOSURE

Jerry, There is no one transistor that will cause that behavior. First put an in-line wattmeter and a dummy load on the KAT100 ANT1 connector, set the power to 50 watts and then enter TUNE. 1) does the tuner tune so no LEDs are lit on the KAT100? If no, how many are lit? 2) what is the power

Re: [Elecraft] KAT100 Tuning Failure

Since you have the KPA100 disconnected and the KAT100 connected to the KIO2 for control, the KAT100 with the K2 ATA menu in CAL, you can calibrate the KAT100 much like the KAT2 for wattmeter balance and forward power. Connect the K2 to the RF IN and a dummy load and inline wattmeter to ANT1. S

Re: [Elecraft] KAT100 Tuning Failure

Thanks Don. The KPA 100 is still disconnected. I have the base K2 with KAT2 connected to the KAT100 in the EC2 chassis. This normally has the KPA100 on top, but was removed as suggested to perform the troubleshooting. I don't have an extra dummy load at this time, but I am going to see if I can

Re: [Elecraft] KAT100 Tuning Failure

It sounds to me like all should be well. As a refinement --- If you have 2 50 ohm dummy loads and a coax TEE adapter, you could put the dummy loads in parallel to produce a 25 ohm dummy load. That will give you a sanity check on the Reflected trimmer pot calibration - adjust it to light the SW

Re: [Elecraft] KAT100 Tuning Failure

Ok, I received the new diodes today and have installed them into the KAT100. Running the tests in CAL mode has the LED indicators on the KAT100 matching what the display on the K2 reads, as well as matching the W2 watt meter. Is there anything else I should be looking at before starting to put t

Re: [Elecraft] KAT100 Dead

Tom, Check the voltages on Q8. When the K2 is powered, you should have 12 volts on the gate and the drain should go to a low voltage. That in turn should make Q1 conduct. 73, Don W3FPR On 8/6/2015 11:41 PM, Tom Field wrote: Having gotten the side tone situation sorted out, I now find I have

Re: [Elecraft] KAT100 Tuning Failure

Parts are on order. I'll update once I have the diodes swapped. Thanks for the help thus far. -- View this message in context: http://elecraft.365791.n2.nabble.com/KAT100-Tuning-Failure-tp7605018p7605262.html Sent from the Elecraft mailing list archive at Nabble.com. _

Re: [Elecraft] KAT100 Tuning Failure

Jeremy, The wattmeter in the KAT100 has been damaged - diodes D1 and D2. You also have the KPA100, and it has a wattmeter with those diodes - so order 4 just in case those need to be replaced too. We can get to the KPA100 after the KAT100 has been taken care of. Failure to disconnect the anten

Re: [Elecraft] KAT100 Tuning Failure

Ok, redid the tests in CAL mode with the following results: 160M 1.03:1 No LED indication on KAT100. K2 showed 1.0:1 Hi Current warning 80M 1.03:1 No LED indication on KAT100. K2 showed 1.0:1 Hi Current warning 60M 1.02:1 No LED indication on KAT100. K2 showed 1.0:1 Hi Current

Re: [Elecraft] KAT100 Tuning Failure

Jeremy, Your first link resulted in an error 404, but the 2nd showed a diode that I believe may be a specialty version. It was highly overpriced at over $11 each. The Aligent data sheet for the 1N5711 shows it to be a 15 ma device. You would do better to order from Elecraft. Order E560004 -

Re: [Elecraft] KAT100 Tuning Failure

Jeremy, why not order the diodes from Elecraft and be sure you get the correct ones? 73! Ken - K0PP __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:Elecr

Re: [Elecraft] KAT100 Tuning Failure

The diodes I was looking at were 1N5711, but they were either 70V 15mA (http://www.digikey.ca/scripts/DkSearch/dksus.dll?Detail&itemSeq=176360177&uq=635730153536694158) or 70V 33mA (http://www.digikey.ca/product-search/en/discrete-semiconductor-products/diodes-rectifiers-single/1376383?k=1n5711).

Re: [Elecraft] KAT100 Tuning Failure

Jeremy, Hopefully you had the ATU menu set to CAL for those tests. If not, please re-do the measurements. Assuming that you were set for ATU CAL, I can offer these comments: With the configuration you have now - KAT2 and KPA100 out of the picture, those results indicate that 1) the KAT100 wat

Re: [Elecraft] KAT100 Tuning Failure

Jeremy, Do not order alternatives for use in the wattmeters. Use only 1N5711s if you want the best voltage response vs. frequency. Those parameters are not specified. Elecraft chose those diodes long ago based on testing for that frequency response. If you are looking for alternatives, and do

Re: [Elecraft] KAT100 Tuning Failure

What are the specs for the diodes? I'm seeing 70V 15mA as the common size. -- View this message in context: http://elecraft.365791.n2.nabble.com/KAT100-Tuning-Failure-tp7605018p7605166.html Sent from the Elecraft mailing list archive at Nabble.com. _

Re: [Elecraft] KAT100 Tuning Failure

Ok, so I've removed the KPA100 completely, and disconnected the KAT2 serial and RF connections. I connected my W2 watt meter on the output of ANT2 of the KAT100, and the LOAD side of the sensor to a 50 ohm dummy load. The readings and indications I got are as follows: 160M1.00:1 No LED indi

Re: [Elecraft] KAT100 Tuning Failure

Jeremy, You must remove the ribbon cable to the KPA100 to remove it from the path - I suggest physically removing it from the EC2 enclosure just to be safe. The fact that you had the KPA100 partly in the path during your tests could create invalid observations. Use a dummy load for testing r

Re: [Elecraft] KAT100 Tuning Failure

Be sure to check all the cables or try changing them out one by one, Jeremy. Phil W7OX On 7/17/15 10:05 AM, JeremyJones wrote: After many months of flawless operation, my KAT100 is starting to have trouble tuning up, particularly on 40 and 80M. It even has trouble tuning up a 50 ohm dummy loa

Re: [Elecraft] KAT100 w/external PA's

Hans, The KAT100 probably can handle more than 100 watts. BUT it needs the K2 to tell it to tune, report the power and SWR, control the correct relays when changing bands or antennas, etc. In other words, it must connect to the control lines in the K2 AUX IO connector and communicate with the K

Re: [Elecraft] Kat100

Yes, the KAt100will still try to tune. The SWR it reports will be woefully inaccurate, and is likely a 'crazy' reading. Check the diodes with an ohmmeter, or alternately measure the resistance between U5 pin 3 and ground, and also U5 pin 5 and ground. Both should measure between 40k and 50k

Re: [Elecraft] KAT100 Power Calibration Problem

Checked my dummy load with an MFJ-259 and it is 50 ohms resistive, no capacitive. Rechecked all soldering with a lighted magnifying glass and cleaned up a couple of joints. Rewound T1 just to be sure it wasn't shorted in the windings. Still the same results of 0.035VDC on pin 3 of U5. Jeremy VA

Re: [Elecraft] KAT100 Power Calibration Problem

Correction, 0.018 was at 5W. 10W still gives 0.036VDC Jeremy JeremyJones wrote > I'm only running 10W through it. > > I've just gone through the complete instruction manual to ensure I haven't > missed anything. Everything checks out. I've just finished the SWR > Bridge Null test and am down

Re: [Elecraft] KAT100 Power Calibration Problem

I'm only running 10W through it. I've just gone through the complete instruction manual to ensure I haven't missed anything. Everything checks out. I've just finished the SWR Bridge Null test and am down to 0.018VDC. Jeremy VA3ZTF Don Wilhelm-4 wrote > Jeremy, > > How much power are you send

Re: [Elecraft] KAT100 Power Calibration Problem

Jeremy, How much power are you sending through that wattmeter? If it is 20 watts or more, it may just be that 30 mV is OK. 73, Don W3FPR On 2/28/2014 9:55 PM, JeremyJones wrote: I've taken the watt meter out of the loop, and have the K2 set for 10W. Double checked the windings and solder on

Re: [Elecraft] KAT100 Power Calibration Problem

I've taken the watt meter out of the loop, and have the K2 set for 10W. Double checked the windings and solder on T1, and it still won't go below 30mV. I definitely have C31 at the low spot as the voltage climbs on either side. I still can't get anywhere the voltage needed at U5 pin 5 for the po

Re: [Elecraft] KAT100 Power Calibration Problem

Jeremy, Tune the capacitor very slowly and use a non-metallic tool. The null is sharp and deep. You must have a good 50 ohm dummy load connected. You may want to take your external wattmeter out of line to do the nulling. The actual voltage will depend on the power level, at 5 watts it should

Re: [Elecraft] KAT100 Power Calibration Problem

I just reread Dons post, and he says less than 10mV, so I guess I have some trouble shooting to do with that first, Jeremy VA3ZTF -- View this message in context: http://elecraft.365791.n2.nabble.com/KAT100-Power-Calibration-Problem-tp7584832p7584865.html Sent from the Elecraft mailing list ar

Re: [Elecraft] KAT100 Power Calibration Problem

I was only able to get U5 pin3 down to 0.03VDC during the SWR Bridge Null test. Is that low enough? The manual says 0 volts or close to it. Jeremy VA3ZTF Don Wilhelm-4 wrote > Jeremy, > > You did not mention it, so I have to ask - when connected as you > describe, did you first obtain a good

Re: [Elecraft] KAT100 Power Calibration Problem

Jeremy, You did not mention it, so I have to ask - when connected as you describe, did you first obtain a good null at U5 pin 3 (by adjusting C31)? That is a necessary first step. If you did not get a voltage measurement in the single digit millivolt range (less than 10 millivolts), then 'a

Re: [Elecraft] KAT100 question

Ed, Neither the KAT2 nor the KAT100 have provisions for manually selecting an L-C combination. The ALT position of the KAT2 does allow the automatic search for a match in a bit more "detail" than the normal algorithm. I believe the tuning algorithm for the 'normal' KAT100 may be close to th

Re: [Elecraft] Kat100

Dave, A little more information please. Disconnect the KAT100 and connect the KPA100 into a dummy load - put an external wattmeter between the KPA100 and the dummy load. Set the K2 power at 50 watts. Then do a TUNE - what is the power read on the external wattmeter. If my guess is correct, i

Re: [Elecraft] [KAT100] Can I use KAT100 with different rig to K2?

Giuliano, The KAT100 needs internal signals from the K2 and will not work with other transceivers. 73, Don W3FPR On 9/14/2013 3:47 PM, Giuliano wrote: I have several RTX not only ELECRAFT, can I use KAT100 with any RTX or only works for K2? 73 Giuliano I0CG K1, K3

Re: [Elecraft] [KAT100] Can I use KAT100 with different rig to K2?

The KAT100 will only work with the K2. It gets its control signals via the K2 aux bus... Harlan NC3C Sent from my Verizon Wireless 4G LTE DROID Giuliano wrote: >I have several RTX not only ELECRAFT, can I use KAT100 with any RTX or >only works for K2? >73 >Giuliano I0CG >K1, K3 >_

Re: [Elecraft] KAT100

Jacques, The KAT100 is a "K2 only" tuner. It needs internal K2 signals and equivalents are not available from the K3 ACC connector. 73, Don W3FPR On 8/23/2013 6:56 AM, Jacques Gaudron wrote: hello The XV transverters, designed for the K2, can be used with the K3 as well. But can the KAT10

Re: [Elecraft] KAT100 tuner.

Jean, The voltage measured at the minimum ideally is zero, but that is not usually obtainable in practice. The actual voltage will depend on the power level you used. Look at the position of the slot in the trimmer capacitor. If it perpendicular to an imaginary line drawn between the two l

Re: [Elecraft] KAT100-1 tweak for 40mtrs?

Eddy, I would not advocate doing anything. The KAT100 firmware quits tuning when it determines that the SWR is "low enough", and less than 1.5 is generally deemed low enough. The next time you do a TUNE into a dummy load on 40 meters, it may (or may not) be lower. There are stray inductances

Re: [Elecraft] KAT100 Problem

Dick, you wrote: "I will eventually move the isolation balun between the KAT100 and the K2/100". It doesn't seem to be a good idea. You may get potential difference between the two. Here is much about it: http://www.w8ji.com/rfi_rf_grounding.htm rega

Re: [Elecraft] KAT100 Problem

Dick, It is very strange that the K2 would have a problem like that on only one band. Does your KPA100 have a shield over the speaker magnet? About the only thing that I can think of is that the speaker shield is missing and its magnetic field is interfering with the operation of the VFO Ra

Re: [Elecraft] KAT100 Problem

richardjwiltgen Cc: elecraft Sent: Sun, Jul 7, 2013 10:38 pm Subject: Re: [Elecraft] KAT100 Problem Dick, I figure you are using a multiband antenna. It may be presenting a very ow or very high impedance to the KAT100 on 20 meters. The solution is o add or subtract about 1/8 wavelength of fee

Re: [Elecraft] KAT100 Problem

Dick, I figure you are using a multiband antenna. It may be presenting a very low or very high impedance to the KAT100 on 20 meters. The solution is to add or subtract about 1/8 wavelength of feedline to the antenna system. On 20 meters, that would be about 8 feet of feedline. Of course,

Re: [Elecraft] KAT100 Problem

: Cc: Subject: Re: [Elecraft] KAT100 Problem Don, Thanks for your prompt response.  Yes, I reduced everything to its bare minimum and tested it on a dry dummy load.  I am sorry; I should have stated that.  I also used about different jumper cables to connect to the dummy load, all yieldin

Re: [Elecraft] KAT100 Problem

test equipment and scheduled to follow the snow birds north this week. i'lllet you know what results I find on 30 me ters. 73, Dick -Original Message- From: Don Wilhelm To: richardjwiltgen Cc: elecraft Sent: Sun, Jul 7, 2013 7:45 pm Subject: Re: [Elecraft] KAT100 Problem

Re: [Elecraft] KAT100 Problem

Dick, Are you doing the component tests (C5 to C6 for example) into a dummy load or into your antenna. Trying that test into an antenna just adds a lot of other unknowns into the formula - use a dummy load. Not only that, check the dummy load and the coax going to it - if you have an antenna a

Re: [Elecraft] KAT100 project - removing the control board

Well it's up and working FB! It didn't go as smoothly as I thought however. I kept getting an intermittent problem. When I got it all put together and aligned the tuner wouldn't power on. I'd pull the plug and connect it together and it would fire up then I'd move it and it wouldn't come on. Th

Re: [Elecraft] KAT100 project - removing the control board

Stan, That is great news. The KAT100 alignment is almost a no-brainer, just follow the manual instructions and you are done. If you have trouble, it is usually with the T1 bi-filar wound transformer. Obtain the null (bridge balance) first - until that is right, none of the other adjustments w

Re: [Elecraft] KAT100 project - removing the control board

As usual Don you had it spot on! The tuner started to not turn on at times when I would switch on the K2. I re-soldered all the pins on J3. It now seems to function properly with band switching and power switching. Thanks so much. Now for alingment. I'll let you know how it goes. 73 Stan -

Re: [Elecraft] KAT100 project - removing the control board

Stan, If there is nothing wrong, it is "plug and play", but you obviously have a problem somewhere. Yes, do check the KAT100 control cable. And please don't think of it as an RS-232 cable at all, it is a cable that happens to use connectors like a PC serial port, but it is 'just a 9 pin con

Re: [Elecraft] KAT100 project - removing the control board

The cable checks out fine. So... ? 73 Stan AE7UT -- View this message in context: http://elecraft.365791.n2.nabble.com/KAT100-project-removing-the-control-board-tp7573412p7573433.html Sent from the Elecraft mailing list archive at Nabble.com. ___

Re: [Elecraft] KAT100 project - removing the control board

Thanks Don. So just "plug and play"? I hooked it up and the Ant 1 lights up and the Low power range lights up. It won't switch antennas and it looks like the K2 is not "seeing" it. When I go to the ATU menu setting and try to engage the ATU is says: PA Ant1 - then goes back to the ATU -- I'm g

Re: [Elecraft] KAT100 project - removing the control board

Stan, Re-read the instructions carefully. Those Control Board changes are only to be done on K2s below SN 3000. It is already done on your K2 control board PC wiring. I would suggest you order the 2 Allen wrenches for the K2. Not only for removing the Control Board in the future, but for

Re: [Elecraft] KAT100 project - removing the control board

Stan, The "Allen wrench" that was supplied in the K2 kit is an ordinary allen wrench, nothing special. Without hunting mine up it is maybe a 1/16 or 1/8, right-angle that is a couple of inches long. Elecraft just wants you to use this as a pry-tool. If you do not have a standard set of allen

Re: [Elecraft] KAT100

Sorry about mis-reading. The same answer applies to the KAT100 too - it must also have the various K2 internal signals to function properly. 73, Don W3FPR On 4/23/2013 11:01 AM, Bruce Beford wrote: The question was about the KAT100 tuner, not the KPA100 amp. Bruce, N1RX The KPA100 needs a

Re: [Elecraft] KAT100

The question was about the KAT100 tuner, not the KPA100 amp. Bruce, N1RX > The KPA100 needs access to internal K2 signal lines for bandswitching, > T/R states, and other functions, so it is not usable with other rigs. > 73, > Don W3FPR On 4/23/2013 1:29 AM, Eddy wrote: > Can the KAT100 be ad

Re: [Elecraft] KAT100

The KPA100 needs access to internal K2 signal lines for bandswitching, T/R states, and other functions, so it is not usable with other rigs. 73, Don W3FPR On 4/23/2013 1:29 AM, Eddy wrote: Can the KAT100 be adapted for use with other rigs as well as the K2? Thanks../ed

Re: [Elecraft] KAT100 ATU power metering - a question from VK7JB

John, If the KAT100 is used with the basic K2 (no KPA100), then the KAT100 will provide the forward and reverse power indication and those values will be displayed by the K2 during a TUNE. When the KPA100 is connected those forward and reflected values come from the KPA100. A similar calculat

Re: [Elecraft] KAT100-2 project

Mike, For your K2 or any others above SN3000, those changes mentioned in the KPA100 manual have already been made. There is no difference in the K2 board wiring between mounting the KPA100 directly on the base K2 or mounting it in an external enclosure. That information is for those having ol

Re: [Elecraft] KAT100 Problem

Larry, I would suggest that lightning, wind or rain static has damaged the wattmeter diodes in the KAT100 so it can no longer properly measure either power or SWR. Those are the 1N5711 diodes at D1 and D2. You might also check diodes D16 and D17 in the KPA100 while you are at it - it is rare t

Re: [Elecraft] KAT100 and KPA100 into EC case.

Mike, the comment about already having the KIO2 below is not correct. You currently have the KIO2 functionality in the KPA100, but you will lose that function from the KPA100 when it is mounted remotely. You will need the KIO2 or a suitable substitute in the base K2 top cover - the substitute

Re: [Elecraft] KAT100 and KPA100 into EC case.

-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 Mike, You need an EC2 enclosure and the KAT100PNL front and back panel kit which converts the KAT100-1 to a -2. Since you have the KPA100 you have the KIO2 built in. On 8/6/2011 11:05 AM, Mike Weir wrote: > > I have a built K2 with the KPA100 insta

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