[Elecraft] [K2] KPA100 Temp Cal: Room temp or radio temp?

, I've been using the KPA100 for YEARS without the benefit of the fan. I hope I didn't cause any long term degradation of the unit. Incidentally, it always seemed to get out at the proper power, but boy would it get hot! 73, Brian N5BCN -- View this message in context: http://elecraft.365791.n2

[Elecraft] [K2] Tuning a magloop with KAT100

to resonance, then operate. Repeat for any band changes or when encountering significant SWR. Does this sound reasonable or am I missing a step or two? Brian, N5BCN -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Tuning-a-magloop-with-KAT100-tp7610957.html Sent from

Re: [Elecraft] K2 - Unstable power output on 40m (digital modes)

in addition to the balun? Interesting idea regarding the KPA100 latest version since 40m is the troublesome band. I purchased the KPA100 around 2011-2012, so I would think it has the latest hardware but I'll double check when I get a chance. 73 Brian, N5BCN -- View this message in context

[Elecraft] K2 - Unstable power output on 40m (digital modes)

t to try to mitigate this. The variables I could change would be to increase/decrease the ladderline length, try a more robust balun, or maybe try a counterpoise wire tied to the balun's ground lug? Any ideas and suggestions would be most appreciated, I sure would like to be able to use 40m! 73 Bri

[Elecraft] [K2] Error in KIO2 Programmers Reference?

, when I use the command value of 41 for inp it triggers the rpt command whose command value is 42. Executing command value of 42 appears to trigger inp, so I think the values are reversed in the manual's table. Can anyone else verify this? 73 Brian N5BCN -- View this message in context: http

[Elecraft] KDSP2 stopped working, LED always on

and D3 but I'm not sure what I'm supposed to be checking them for. 73 Brian N5BCN -- View this message in context: http://elecraft.365791.n2.nabble.com/KDSP2-stopped-working-LED-always-on-tp7585789.html Sent from the Elecraft mailing list archive at Nabble.com

Re: [Elecraft] KDSP2 stopped working, LED always on

, the DSPx module gets pretty warm when plugged in and the K2 is powered up. BTW, U3 on my DSPx module is soldered directly to the board, there is no socket. Thanks and 73, Brian N5BCN -- View this message in context: http://elecraft.365791.n2.nabble.com/KDSP2-stopped-working-LED-always

[Elecraft] [MM] KRC2 questions

Hi All, I recently built a KRC2 w/KRC2ACC option for my K2. With a little help from others, it's up and running! I'm using it to control a Top Ten Devices A/B coax switch. I've upgraded the firmware to the latest (version 1.6). A few questions: 1) One possible error found in the KRC2ACC

[Elecraft] [K2] TUNE+DISPLAY Command w/ KAT100/KAT2

Despite re-reading the manual, I'm still a little unclear on what the TUNE+DISPLAY command does with a KAT100 or KAT2 tuner. What I THINK it does is: 1) temporarily disables AUTO TUNE and its 2 or 20 watt limit 2) enters (normal) TUNE at the requested power level 3) displays the current swr Is

[Elecraft] [K2] KAF2 displays strange numbers

Hi All, I have a KAF2 installed and it seems to work fine, with time and date set to UTC. Every now and then, when I press DISPLAY to show the time, the KAF2 will briefly show a set of numbers unrelated to the current date and time. These strange numbers will disappear and then the proper time

[Elecraft] K2 using fldigi and rigCAT

Hi, I've been using my K2 successfully with AA6YQ's DXLab Commander and WinWarbler. There are some modes WinWarbler does not support, so I wanted to try fldigi-3.21.40. Fldigi is able to control the K2 using HamLib, but for some reason will not work when using rigCAT. I downloaded the K2.xml

Re: [Elecraft] K2 using fldigi and rigCAT

I copied the K2.xml file to the fldigi.files/rigs directory. Is this the correct place for it? 73 N5BCN, Brian - K2 #6800 KPA100/KAT100-2, KSB2, KAT2, KIO2, K160RX, KNB2, KAF2, LP-PAN/K2 w/ Pre-amp, SignaLink USB -- View this message in context:

[Elecraft] [K2] KPA100/KAT100 Control Section Current

run time. Any suggestions besides just unplugging the control cable between the K2 and KPA100/KAT100 every time I want to go QRP? 73 Brian N5BCN - K2 #6800 KPA100/KAT100-2, KSB2, KAT2, KIO2, K160RX, KNB2, KAF2, LP-PAN/K2 w/ Pre-amp, SignaLink USB -- View this message in context: http

[Elecraft] [OT] K9YC's Control Cable: Part Two

and/or do not use Pin 5. Assuming I'm still tying the shield to the DB9 shell, where should I tie the striped wires of each pair to? 73 Brian N5BCN - K2 #6800 KPA100/KAT100-2, KSB2, KAT2, KIO2, K160RX, KNB2, KAF2, LP-PAN/K2 w/ Pre-amp, SignaLink USB -- View this message in context: http

Re: [Elecraft] AA Engineering Charger + KBT2

Hi Wes, I could be wrong on this, but I think what you say is correct if considering charging the battery alone, but is thrown off when you consider powering the K2 with the batt via the smart charger. For example, my K2 receive current is about 400 mA with a bunch of options. Let's assume that

Re: [Elecraft] [OT] Drain Wire on CAT6 RFI resistant cable?

If you are near a Fry's Electronics, they sell 25 feet of Cat 6, Shielded Twisted Pair (STP), 26 AWG stranded cable for $9.99. 73 N5BCN - Brian - K2 #6800 KPA100/KAT100-2, KSB2, KAT2, KIO2, K160RX, KNB2, KAF2, LP-PAN/K2 w/ Pre-amp, SignaLink USB -- View this message in context:

Re: [Elecraft] OT: WWV-driven station clock that displays zulu time

What I would love to see (I've searched and searched to no avail) is an atomic clock with a nice LED display that is DC powered. LED so it can been seen at night (or during a power outage), unlike most LCD clocks which have a momentary backlight feature. DC powered so it can run off of battery

[Elecraft] [OT] K9YC's Serial Cable question

I read Jim Brown's very informative article on RFI and want to use his method to construct a K2/PC control cable using some CAT5 cable I have laying around. Hopefully Jim or someone knowledgeable about this cable can answer two questions: For UNSHIELDED twisted pair CAT5: The K2 instructions use

[Elecraft] [OT] Drain Wire on CAT6 RFI resistant cable?

Thanks to Don and Jim for their input on building a RFI resistant control cable. I've been informed by another poster that it's recommended to use stranded CAT5 or 6 verses solid wire. The poster believes stranded wire would be more resistant to flexing, plugging, unplugging, etc. than solid

[Elecraft] [K2] Trouble dialing in KAF2's AF2

Hi all, I aligned the KAF2 using a XG1 and Spectrogram. I tried the broadband noise method, but found the line for the peak very coarse, it seemed the XG1 peak was much more stable and easier to discern. Regardless, I thought I had R1 and R2 really dialed in for both AF1 and AF2. AF1 seems to

Re: [Elecraft] [K2] Trouble dialing in KAF2's AF2

Don, Thanks as always, your advise was spot on. I found that the range where AF2 is in its happy place is fairly narrow, but your method got it dialed in. The KAF2 is very useful for CW. 73 N5BCN - K2 #6800 KPA100/KAT100-2, KSB2, KAT2, KIO2, K160RX, KNB2, KAF2, LP-PAN/K2 w/ Pre-amp,

[Elecraft] [MM] W1 software false error messages

Hi all, When launching the W1 software, it will always give an error message: No W1 found. Please check your computer's COM settings. After clearing this message, the W1 and software work normally. Another false error message is generated when I click on Settings then Save: Error saving to

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 +

[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

[Elecraft] AA Engineering Charger + KBT2

Hi all, AA Engineering's QRP Smart Charger has the option to be built using two of the four charging rates: 0.250 A, 0.500 A, 0.750 A, and 1.00 A. I plan to run my K2 using a KBT2 + Charger combo. Which two charging rates would be suit this setup? My K2 has a number of options and draws about

Re: [Elecraft] K2 KPA100 transmit test: fail

Hi all, Thanks for the tips. I might have taken the instructions too literally and not taken into account the receiver attenuating the signal. However, I did confirm that AGC is turned off on the receiving radio, so that can be ruled out. What is hard for me to understand is that the signal is

Re: [Elecraft] K2 KPA100 transmit test: fail

Hi all, Here's the results of my power measurements: Requested/Measured Power 5 W -- 5.81 W 10 W -- 11.06 W 11 W -- 11.93 W 20 W -- 18.22 W 30 W -- 30.25 W Looks pretty good to me. The take away lesson is not to rely on a separate receiver to judge signal strength. It's still a mystery to

[Elecraft] K2 KPA100 transmit test: fail

Hi All, During the course of testing my recently built KPA100, I'm experiencing odd results on the cw transmit tests. All tests, resistance, and voltage checks up until this point have been normal. When transmitting cw into a 100 watt dummy load, things appear normal when transmitting in QRP

[Elecraft] LED vs LCD PC Monitor: RFI?

I'm replacing the PC monitor in my shack and it appears today's current selection of reasonably-priced monitors are either LCD or LED flat screens in the 20 - 23 range. Since the monitor will share the same desk as my K2, I wanted to get one with the least amount of RFI. Is LCD vs LED

[Elecraft] K2 Control Software: HRD vs TRX-Manager vs N4PY

Hi all, I've been using HRD to interface to my K2 and, for the most part, I'm very happy with it. I use DM780, the logbook and have controlled the K2 over the internet in conjunction with IP-Sound. I get the general feeling, however, that (understandably) current development is focused more on

Re: [Elecraft] LCD TV Causing RFI

FYI, a follow up to my RFI hunting adventure: I ordered a bunch of ferrite cores from Mouser, Part #623-0431176451, at about $7.00 each. They have a 0.72 inch inner diameter. The offending HDMI cables are fairly thick; I could only manage two complete turns and still be able to snap the core

Re: [Elecraft] LCD TV Causing RFI

Thanks to everyone's suggestions, I'm zeroing in on the culprit!!! For reference, the two TVs in my house with the issues: Samsung 46 LCD Model LN46A580P6F Samsung 40 LCD Model LN40A530P1F (we rarely use this one, that's why I didn't discover the RFI on this one until recently) I had

Re: [Elecraft] LCD TV Causing RFI

More interesting findings: I disconnected the coax cable to the DVR: RFI is still there! So the cable coax+DVR does not seem to be the source of my RFI on 20m. With the coax cable disconnected, but the DVR still connected to the TV via HDMI cable, the RFI is there if I'm playing a recorded

[Elecraft] LCD TV Causing RFI

Hi, I have a Samsung 46 LCD TV that is causing RFI on the 20m PSK calling freq (14.070). My station setup is a K2 powered by an Alinco DM-330 switcher. The interference shows up in the waterfall display; it's about 1000 Hz wide right on 14.070 (the coincidence is weird), doesn't move, and

[Elecraft] [K2] Two mic cables into K2

After growing tired of plugging/unplugging my SignaLink cable and hand mic when switching from digital modes to SSB, I'm trying to find a more elegant solution. I'd like a commercial product, however, the MFJ mic switches seem to get so-so reviews and the NCS Multi-Switch seems way overkill for

[Elecraft] [K2] KAT2 and KAT100 living happily together?

I'm considering purchasing a KPA100+KAT100-2 and building both in a separate EC2 case. My current K2 already has a KAT2 and KIO2 installed. I control the K2 with HRD via the KIO2. If I connect the K2 to the KPA100+KAT100-2, will I have to remove the KAT2 or is there a way to bypass it? What

Re: [Elecraft] K2 MDS numbers off

Peter, Thanks for the suggestion: T7 checked out ok with proper orientation and proper number of turns. Another post mentioned checking RFC11, so I'm checking that next. Does anyone have a suggestion about a simple test oscillator/rf signal generator kit to purchase to perform the signal

Re: [Elecraft] K2 MDS numbers off

Many people have suggested using the XG2 as a signal source for signal tracing. My understanding from reading a previous post was that the 50 uV output of the XG2 was too low to perform signal tracing on the receiver circuitry (however, it's adequate for the transmitter circuitry). I'd love to

[Elecraft] K2 MDS numbers off

Hi all, I attempted to calculate my K2's (S/N 6800) receiver sensitivity using an XG2, but I'm getting numbers way off from what are listed in the XG2 instruction sheet. Using a Fluke 117 multimeter, I'm measuring S+N = 0.132 Vrms and N = 0.034 Vrms, which I calculate MDS = -119 dBm. I'm

[Elecraft] K2 Hard Power Down/Power UP

Hi, I currently have my K2 powered by an Alinco switching power supply. Will it hurt the K2 to have it's power button always depressed (on) and turn the unit on and off by turning the power supply on and off (versus using the K2's on/off button)? My concern is that the switching power supply

Re: [Elecraft] RFI PC Speaker Hum

Hi, Just to be clear, I'm not using the speakers with the radio, I'm using them with my PC which is in the same room as the K2. I don't know if my PC requires amplified speakers or not. 73 Brian - N5BCN - K2 #6800 KSB2 KAT2 KIO2 KNB2 -- View this message in context: http://elecraft

Re: [Elecraft] RFI PC Speaker Hum

Hi Joe, I'm going to try your suggestion. The way I understand your post is that you installed the bypass caps directly on the amplifier board, one cap for each speaker wire, each grounded to the circuit board's ground? My speaker's circuit board is difficult to work on, could I accomplish the

[Elecraft] RFI PC Speaker Hum

Hi all, I'm experiencing the dreaded PC Speaker hum every time my K2 transmits, even when power is dropped to about 2 W. The speakers are Harmon Kardon amplified speakers and they do not hum when turned off. Per other threads, I plugged the speakers' wall wart into the same outlet as the K2

[Elecraft] XG2 - Trim Frequency?

Hello, I recently assembled a XG2 signal generator and was wondering if there is a way to trim/adjust the output frequency. I also have a XG1 and it has a trimmer pot to adjust the signal to a reference, the XG2 has no such adjustment that I can tell. Thanks! N5BCN - Brian - K2 #6800

[Elecraft] K2 Remote Power On/Off Ideas

Hello all, I've successfully set up my K2 for remote operation over the Internet using Ham Radio Deluxe (HRD) remote server and VoIP software (IP Sound for the LAN, Skype for the Internet). I'm now researching ideas on how to remotely switch on and off the Power Supply to the K2 and/or the K2

Re: [Elecraft] [K2] K2 Rx or XG1 Problem?

the K2's S-meter for S9. I'm posting a question on the MM section if anybody has helpful suggestions on troubleshooting the XG1. 73 Brian - N5BCN - K2 #6800 KSB2 KAT2 KIO2 KNB2 -- View this message in context: http://n2.nabble.com/K2-Rx-or-XG1-Problem-tp4030138p4054147.html Sent from the [K2

[Elecraft] [MM] XG1 signal problem

values. Do these symptoms jump out anybody as something obvious (bad xtal or other component)? Any suggestions will be most appreciated. 73 Brian - N5BCN - K2 #6800 KSB2 KAT2 KIO2 KNB2 -- View this message in context: http://n2.nabble.com/XG1-signal-problem-tp4054195p4054195.html Sent from

Re: [Elecraft] [MM] XG1 signal problem

removing it from the PCB? Thanks. Brian - N5BCN - K2 #6800 KSB2 KAT2 KIO2 KNB2 -- View this message in context: http://n2.nabble.com/XG1-signal-problem-tp4054195p4055452.html Sent from the [MM] mailing list archive at Nabble.com

Re: [Elecraft] [K2] K2 Rx or XG1 Problem?

tips to clean the switch? Thanks. Brian - N5BCN The first place I'd check is the attenuator switch. Mechanical switches have a nasty habit of getting dirty. Next, how's the battery voltage?? Ron AC7AC - K2 #6800 KSB2 KAT2 KIO2 KNB2 -- View this message in context: http://n2

[Elecraft] K2 Difficulty Fine Adjusting AGC

, adjusting CAL S LO, then CAL S HI, with the same results. I'm starting to think there is something wrong with my XG1, even though I can hear the signal clearly at 7040 kHz. Any ideas would be much appreciated! The K2 is working great other than this issue! 73 Brian - N5BCN - K2 #6800

[Elecraft] [HAM] Question about BNC/Coax assembly

wrong. Thanks! 73 Brian - N5BCN - K2 #6800 KSB2 KAT2 KIO2 KNB2 -- View this message in context: http://n2.nabble.com/Question-about-BNC-Coax-assembly-tp4019757p4019757.html Sent from the [HAM] mailing list archive at Nabble.com

[Elecraft] [K2] K2 Rx or XG1 Problem?

no volume difference between 1 uV and 50 uV), but clearly one or both are not functioning properly. Well, it appears signal tracing is in my future. 73 Brian - N5BCN - K2 #6800 KSB2 KAT2 KIO2 KNB2 -- View this message in context: http://n2.nabble.com/K2-Rx-or-XG1-Problem-tp4030138p4030138.html

[Elecraft] [K2] K2 Difficulty Fine Adjusting AGC

, adjusting CAL S LO, then CAL S HI, with the same results. I'm starting to think there is something wrong with my XG1, even though I can hear the signal clearly at 7040 kHz. Any ideas would be much appreciated! The K2 is working great other than this issue! 73 Brian - N5BCN - K2 #6800

[Elecraft] [HAM] Question re BNC/Coax assembly

wrong. Thanks! 73 Brian - N5BCN - K2 #6800 KSB2 KAT2 KIO2 KNB2 -- View this message in context: http://n2.nabble.com/Question-re-BNC-Coax-assembly-tp4021076p4021076.html Sent from the [HAM] mailing list archive at Nabble.com

Re: [Elecraft] [K2] K2 Difficulty Fine Adjusting AGC

I'm having that you suggested? I'll perform the MDS measurements and see where that takes me. I can't really detect much of a problem on receive. How would this gain problem (between the antenna and product detector) manifest itself in normal operation? Thanks! 73 Brian - N5BCN - K2 #6800

Re: [Elecraft] [HAM] Question re BNC/Coax assembly

Hi Don, The nut is cinched down extremely tight, but I doubt I was very careful with the cut dimensions. I'll check that next. 73 Brian - N5BCN - K2 #6800 KSB2 KAT2 KIO2 KNB2 -- View this message in context: http://n2.nabble.com/Question-re-BNC-Coax-assembly-tp4021076p4022017.html

Re: [Elecraft] [K2] K2 KIO2 Polling Noise in PC Speakers w/ HRD

THANKS! 73 Brian N5BCN Don Wilhelm-4 wrote: Brian, There may be a potential difference (voltage) between your PC chassis and the K2. Try bonding them together (with a wire) to see if that helps. No guarantees, but it is worth a try. 73, Don W3FPR N5BCN wrote: (K2 #6800