[Elecraft] K3 minor parts
Hi Folks HNY from ZL, Just a quick post about small minor parts for my K3. Now nearly 10 years old and has broken audio/rf knobs. No big deal been like this for a while. Checked today to replacewith shipping to ZL it's a lost cause. Guess this relates to inventory and stock control. Plan B is look for a near enough replacement. Be interested what others have managed to source. Reply off list no problem. cheers Paul zl1ajy -- Sent from: http://elecraft.365791.n2.nabble.com/ __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2 - Issue after installing K60XV
possible long shot check status of D19 Alignment and Test cheers -- Sent from: http://elecraft.365791.n2.nabble.com/ __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] KX-3 4092 - broken probably bin 13 material
Hi folks A follow up KX-3 4092. Thankyou to the off-list emails and advice. It's not looking flash. Suspect the fault is a low level issue on the early 12volt lines or one of the dc-dc converters. At this stage it's a non-viable repair here so will put it on the "will take another look later ' shelf. thanks cheers from NZ Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/KX-3-4092-broken-probably-bin-13-material-tp7624400p7624426.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX-3 4092 - broken probably bin 13 material
Hi folks Havn't used the kx-3 for months. Think it could be seriously broken... when power +12v is plugged in the lcd lights and thats about all. This happens without the usual power up buttons. Nothing looks out of place under the hood and the flexible pcb is pushed in correctly. anything obvious to check ? cheers Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/KX-3-4092-broken-probably-bin-13-material-tp7624400.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Interesting FW Upload issue with K3 (happy ending)
This sounds familiar A while ago updated a k3 using my laptop and usb to serial. The RS232 won't fit properly to the K3 so used a linking CAT-5E cable a couple of meters long. The update failed several times, not sure of exact cause, possible x-talk across the tx/rx pairs or unused wires. Replaced link cable with a very short CAT5E all %100 cheers Paul b ZL1AJY -- View this message in context: http://elecraft.365791.n2.nabble.com/Interesting-FW-Upload-issue-with-K3-happy-ending-tp7617371p7617377.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] Slighty off topic - 80 meter second harmnic how to stop
Hello again folks Thanks to all for the suggestions and hints to what this problem could be. Tests have been done at 2 locations; my own home station and here at another property ( work in progress as we politely say..) about 125km south of Auckland. The same second harmonic garbage is heard at both places. Over the last day I have completely swapped out all the 80m and 40m antenna and feeder components here in the provinces. No change. What I now strongly suspect is the only common point at both locales; both properties have burglar alarms installed. Both are almost identical well known European name brand units. There is no detectable RF radiation from the processors or wiring. The clincher now that I think about the last time we ran 2 stations here without any drama was before the alarm was commissioned here. I have dropped the supply and backup DC to the alarm here without any change, Likely 3.5 meg RF is simply hammering the PIR's, cable runs are in the roof cavity. Can't %100 prove this without fairly major re-wiring, will leave it as is for the meantime, thanks again guys cheers from ZL Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/Slighty-off-topic-80-meter-second-harmnic-how-to-stop-tp7614506p7614534.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] Slighty off topic - 80 meter second harmnic how to stop
Hi folks slightly off topic running 2 x K3 80 and 40 meter cw. Separate antenna about 50 meters apart. 100 watts. Power supply 14 volt dc via batterys + dc charge. The 80 meter second harmonic is very strong. No surprise so have done the usual 80 meter band pass filter and quarter wave stub For what ever reason the harmonic is still very present..darn.. oddly has a rasping note not pure carrier. A close ham about 400 meters away can also hear the 2nd hamonnic, band pass in or out makes little change. Possible is related to coax feedlines running close for some distance ? Both are very well choked at feeder and TX Happy to respond off topic cheers from ZL Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/Slighty-off-topic-80-meter-second-harmnic-how-to-stop-tp7614506.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX-3 Transmit Audio - Echo on TX SSB - interesting find
Hi Folks I have owned a KX-3 for a couple of years, have fitted the filter board and auto-tuner and a set of internal batteries and charger. Certainly a tidy package. Something I like using is a small light headset aka cheap and cheerful pc gaming type hardware. i use these on my K2 and K3 with great results. The heavy bass needs taming down, simple RC filter does the trick. >From day one the KX-3 seemed very bass heavy. Something didn't sound quite right, an odd echo on SSB with higher mic gain settings. Bias for the Mic was enabled to power the insert. Setting for TX EQ -16 for 100 200 400 hz. I added a 0.047uF cap into the mic line to roll the low end audio. This prevents the mic power from working, so figured the unused mic up/down line could be used. It is about 2.5volts in series with 5.6k. So we now have a working mic, with minor internal changes at the mic socket. But the echo seemed if anything worse at higher mic gain. Now as a long shot terminated the mic up/down line with about 10uF electro. This would ensure the bias supply is clean. Echo is now gone. Totally. I suspect what is happening is headset plugs are sitting accross the up/down line, some audio is ending up where is should not be. I am well pleased. The 3 components ( 0.047uF 5.6k 10uF ) can be mounted directly on the KX-3 mic socket. It's a squeeze but works well cheers from ZL Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/KX-3-Transmit-Audio-Echo-on-TX-SSB-interesting-find-tp7609274.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] [K2] Anyone else try JG1XLZ's KSB2 Mod?
K2 here was built several years ago and later added the external 100w pa and tuner. For quite a while got reports of slightly ragged sideband but certainly not a show stopper. A few weeks ago finally took a look and found the bias on the K2 finals just slightly on the low side; according to the manual it was well within spec. Increased about % 10 tidied up ok. Part II was the mod you mention. this has also been done, can honestly say the K2 SSB is right on the money. I previously sent a note to the K2 forum, incorrectly typed the final bias about 100mA to high. ( need better glasses. ) cheers Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-Anyone-else-try-JG1XLZ-s-KSB2-Mod-tp7603446p7603464.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K2 10Watt RF SSB TX distortion
Hi Folks Getting a few reports of slightly ragged SSB audio TX. check here definitely NQR ( not quite right ) Used another receiver to chase the signal path from the SSB board to the power stages. Distortion is in finals. They appear to be on the very edge of class B. Deceased resistor value R59 to increase bias current. My K2 meter may not be accurate; previous value TX showing 0.64A , moved to 0.78A. Received audio is now very clean. R59 value approx 1K. No apparent increase in temps with casual use. serial 6534 built several years ago. cheers Paul b zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-10Watt-RF-SSB-TX-distortion-tp7597651.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K2 100 watt power amp fail and fix
Hi folks thanks to historic user postings regarding the KPA100 amp loosing power control D17 shorted. Havn't got spares on hand so replaced D16 and D17 with stock 1N4148 which have a higher forward turn on voltage. Output checks seem ok and RF indication on the K2 looks normal. cheers Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-100-watt-power-amp-fail-and-fix-tp7593539.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] K2 audio images strong signals 40 meters
Hi folks K2 here has what appears to be an odd issue with strongs sigs around 7175Khz Tuning approx 5 Khz higher the same signal can be heard several s-points down. Best guess seems to be centred around the 7175 - 7180 range. I have a distant memory reading about this many years ago at build, it's been a while.. thanks cheers Paul b zl1aly -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-audio-images-strong-signals-40-meters-tp7591965.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
Re: [Elecraft] K2 audio images strong signals 40 meters
Hi again folks Update on K2 40 meter audio images around 7175; Serial number of build is 6534 with most options installed. Dummy load on Antenna RX 40 meters. Test signals received on 7170 approx 50uVolt, S9 on the K2. Tune to approx 7175 an image is heard. It is not inverted or reversed tune. Leave the K2 on 7170 and tune the test signal to 7184. It can be heard on 7170. Best approx guess is 5 s-points down so probably not a big deal except when the band is quiet and strong signals are nearby. The calibration cable has been removed, Filter setting and mode have no effect. On CW the image signal tunes exactly the same, again about 5 s-points down. Noticed this oddity a while ago when listening to a couple of strong SSB stations during daylight hours at another QTH with low rf background noise. Suspect this has been the same since build several years ago, won't be loosing any sleep over it, more curious if it is something related to vco mixing products somewhere? I have noted the mods on earlier K2 builds, could well be in the same field. thanks for the replies cheers Paul b zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/K2-audio-images-strong-signals-40-meters-tp7591965p7591984.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX-3 4092
Hi Folks Owned a KX3 for a while but never used portable until recently. Antenna is a 40m dipole, coax fed. Nothing exotic. For some reason the KX3 tuner has a problem getting a good match. It settles on something like 1.8/1 which is not big deal except other transcievers show near perfect match around 7.1megs. Latest firmware ver loaded. Now here is the odd part; above 7260 fast perfect match. Move down 1khz to 7259 and the tuner won't match correctly. On a 50 ohm dummy load tuner is faultless. Some thing I noted is the VSWR reading on the KX3 seems out of line with other equipment. Not sure what the story is ? in the meantime the KX3 is back on the shelf, my K2 built several years ago is doing splendid service cheers Paul b zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/KX-3-4092-tp7589040.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html Message delivered to arch...@mail-archive.com
[Elecraft] KX-3 higher mic gain - perfect
Hi folks Latest firmware for KX-3 now has stacks of mic gain using cheap and cheerful computer type headsets. PTT is not used here, all VOX on SSB. Disable PTT and microphone bias. Appox 2.5 volts from the PTT line will power the element ok. There is very low level audio noise from the PTT supply but well down on normal speech. Mic Gain at approx 55. Processing at 12. My own preference is roll off the bass so set 100 200 400 TX filter at -16 and 800 at -3. Very strong audio on SSB. VOX function is very impressive. cheers Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/KX-3-higher-mic-gain-perfect-tp7583259.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] K3 - PA Temp Unstable
Hi folks K3 here owned for about 4 years. Latest firmware. Last couple of days at power up the PA Temp is unstable. LCD flicks between 27 and 40 degs C. TX and RX same reading. Noticed the rear fans starting and stopping Reloaded firmware no change. Before lifting the hood anyone got a pointer what to check ? thanks cheers Paul b zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-PA-Temp-Unstable-tp7583051.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 headset recommendation
Interesting to see this thread.. the K2 and K3 owned here have bags of audio transmit gain. This allows the heavy bass vowel sounds to be rolled off below about 300 hz. The KX3 seems to be slightly lacking in TX audio; the not-so-great fix here has been to construct a very small outboard single transistor mic amp. It is powered from a small 9 volt battery. I have tried using the mic bias directly to drive the mic preamp but got into rf feedback troubles. cheers Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-headset-recommendation-tp7564383p757.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] KX3 Mic gain ?
Interested in this thread.. the KX-3 seems a tad low on TX audio gain. I use the same mic/headsets on my K2 and K3 with stacks of audio. Temp fix has been making an audio preamp powered from small battery Tried using the +3.5 volt mic-bias supply but got into all sorts of RF feedback problems. Didn't pursue this, probably could be sorted out. cheers Paul b zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-Mic-gain-tp7576683p7576691.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] KX3 PBT SSB
Hi folks can someone check this I may be reading incorrectly.. Using SSB narrow filter there seems to be audio images when using bandwidth below about 2.45khz PBT SSB is set to LoHI Cut Low = .150 Hi= 2.45 Now set the PBT to Nor Narrow bandwidth SSB tunes correctly if FC = 1.5 and BW 1.8 Personal preference is using PBT LoHI Cut Roofing filter is installed. No problem on CW, phase and gain settings have been checked. thanks cheers Paul ZL1AJY -- View this message in context: http://elecraft.365791.n2.nabble.com/KX3-PBT-SSB-tp7573694.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] KX-3 Fast AGC setting
Hello folks KX-3 latest firmware. Don't seem to be able to get fast AGC to work ok on narrow CW bandwidth. Sounds quite rough on low bands with high local noise. Slow AGC is very smooth, seems like the fast setting is not tracking properly on narrow bandwidth ? Using earphones no problem with audio level. cheers Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/KX-3-Fast-AGC-setting-tp7573471.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] K3 PA Temp Reading Unstable
Hi folks K3 here has developed a slight problem with the PA temp sensing.. it is flicking between normal and +40 several times per minute. noticed the fans starting in a very cold shack RX only running. This may have been happening for a while, but never noticed until the cooler mornings. Havn't taken a look at the PA or circuits yet, wonder if another user has a start point ? My guess is the sensor or related components. thanks cheers Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-PA-Temp-Reading-Unstable-tp7572353.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] K3 Notch Filter
Hello folks Owned my k3 for about 3 years, performance is spot on, just one very minor operator feature that I've never quite got comfortable with; The K3 notch filter appears to be after the IF system? eg audio type notch, the S meter does not show any signal change on steady carrier. Is this a big deal in the K3 ? Other similar price major brand in the shack uses IF type notch which knocks out the offending signal almost into the background noise. K3 here is latest firmware, with all hardware updates. Interested to hear comments reply off list if preferred thanks cheers Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Notch-Filter-tp7505080.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] Vibroplex - seen on ABC Pan Am
G'day folks wonder if anyone watches a new ABC series Pan Am ? Supposed to be set in the early 1960's. usual storylines and bling. Noted last episode a Vibroplex or similar was used to send a telegram or cablegram http://beta.abc.go.com/shows/pan-am/jet-setter/104a-cablegram cheers Paul b zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/Vibroplex-seen-on-ABC-Pan-Am-tp6942439p6942439.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] K3 Rf gain tracking (main vs. sub)
Hello folks Interesting to note non-linear RF gain control. Same thing here on the main RX. Scn Adc check is spot on. Approx 10o'clock position jumps to % 100. Sub RX is ok. cheers Paul b zl1ajy 3058 -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Rf-gain-tracking-main-vs-sub-tp5668917p5673415.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] K3 +DC power supply voltage
Hello folks, The K3 here is sometimes powered from DC AGM battery supply. Voltage can drop in the evenings on load to approx 12.0VDC. At 100W carrier a DVM reading at the anderson connectors shows close to 12 vdc; there is a small drop in the heavy power feed cable. The K3 LCD voltage displays approx .4 volts lower. This may be an issue when the AGM batts drop below 12 vdc. Just wondering if the internal measurment is showing some loss in the cabinet wiring or anderson connectors ? cheers paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-DC-power-supply-voltage-tp5281684p5281684.html Sent from the [K3] mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] Reduced-height bail
Interested to read comments on the bail height.. it has been removed here, along with the plastic holders. Replaced with taller screw-in rubber feet, these push the front panel upwards. The rear feet have also been changed to smaller flat rubber units, the chassis sits very firmly on most surfaces no problem. cheers paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/Reduced-height-bail-tp5255430p5257958.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] MH2 Microphone Issue
The MH2 mic PTT may be getting caught in the rubber surround. It is easy to undo the cover. Note that the PTT button only fits one-way, there is a cut away slide which fits onto the switch. For my own use the mic insert had a tad to much bass, it has been slightly modded here to suit. regards Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/MH2-Microphone-Issue-tp5106621p5107093.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] OT: ROCKWELL automation at Dayton
is this the same unit with the Time Vortex Magnatron ? looks like a Model-II with 90-Degree Braced Ectoplasmic Junctor Inhibitors. cheers paul b zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/OT-ROCKWELL-automation-at-Dayton-tp5068394p5068515.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] kpa100 in a ec2 w kat100
Hi Rolf Check out this thread http://elecraft.365791.n2.nabble.com/K2-external-auto-tuner-and-100-watt-amp-td4782436.html I have just completed the same project. The only minor mod for my own use; running +12vdc from the EC2/KAT100 for the K2. This is via the +12vdc socket normally wired for dc input. cheers from ZL paul b zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/kpa100-in-a-ec2-w-kat100-tp5025952p5026183.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] [K3] CW Sidetone Pitch Change Problem - key clicks
Good morning folks Noticed the odd pitch change a while ago, it is on strong sigs over s9. It is heard on some signals more than others. The only thing I have found is CW with moderate to bad key clicks seem to have this odd tonal shift, compared to clean CW at the same received level. regards Paul zl1ajy -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-CW-Sidetone-Pitch-Change-Problem-tp4975385p4982588.html Sent from the [K3] mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] K2 external auto tuner and 100 watt amp
Hi Jim Thanks for the info :-) Excellent, that is exactly what I want to put together. for the record, some background to this project... a few weekends ago was the ZL National Field Day which I havn't done anything remotely serious for over 20 years ! A small team was put together, and I took along my K3 and the K2 as a backup receiver. Long story short, the K2 was put into service when it was quickly apparent the other-brand transceivers had front end and/or mixer overload. ( eg in kiwi speak - completely hammered ) K3 ran perfectly, no question. The K2 performed beyond the call of duty, so figure add the amp and tuner for casual contest and home station work. ( build 6534 ) thanks again Jim cheers for now Paul zl1ajy -- View this message in context: http://n2.nabble.com/K2-external-auto-tuner-and-100-watt-amp-tp4782436p4782647.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] K2 external auto tuner and 100 watt amp
Hello folks Need a bit of input hereI have a K2 with auto tuner fitted. I would like to add the 100watt amp and external tuner. Can these be put together in one single unit, using an Elecraft box ? Not sure how the amplifier is linked to the K2, normally it has a harness internally. The plan is to keep the K2 stock 10 watt for portable, and plug in the external amp and tuner for use at home or contests. thanks cheers Paul zl1ajy -- View this message in context: http://n2.nabble.com/K2-external-auto-tuner-and-100-watt-amp-tp4782436p4782436.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] re-visit Subtle Change in CW monitor tone
Hi folks This was a thread a week or two back. Very slight kinda' pitch change when listening to strong CW sigs. I posted a while ago relating this to the hardware AGC action, seems to occur when sigs over about 70 uV Had another listen this evening; think it occurs when the CW siganls have quite a bit of key click. Not a big deal, my CW is pretty average anyway but interesting stuff.. :-) cheers from downunder Paul zl1ajy -- View this message in context: http://n2.nabble.com/re-visit-Subtle-Change-in-CW-monitor-tone-tp4762046p4762046.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] K3 AGC and Apparent Noise and Signal Distortion
Hello folks Just to follow up on this thread...listening to quite strong CW sigs with Slow AGC setting is not too flash. I would guess sigs over 75 uV or so which is well into the 9+ region. It is hard to exactly describe but sounds like the Hardware AGC loop is pumping. It is fine on SSB or weak CW. Not a big deal, I would prefer a longer hardware AGC Hang time, but thats personal preference. I have an aversion to riding RF gain controls, reminds me of the bad old days of rubbish receivers without product detectors :-] cheers Paul zl1ajy 3051 -- View this message in context: http://n2.nabble.com/K3-AGC-and-Apparent-Noise-and-Signal-Distortion-tp4504951p4506421.html Sent from the [K3] mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] Jurrasic Radio vs. K3
good morning folks great thread ! similar story here, young teenage years using a Heathkit HR-10 reciever, and DX-40U both purchased second hand. The HR-10 was less than stellar for sideband, it had more drift than a Japanese fishing fleet ! Very early on I was given a battery tube AM / CW transciever, which was used on the South Pole expedition in 1957 (?) with Sir Edmund Hillary. It had huge coloured knobs for use with gloved hands, and a complete set of 1.5volt batt valve spares in the cover. A bit of radio history which sat in a farm shed for years...but being a young keen ham I wrecked it for the variable caps and whatever I could find. A shameful thing to do but probably typical of the era ! cheers from downunder Paul b zl1ajy -- View this message in context: http://n2.nabble.com/Re-To-those-about-to-rock-we-salute-you-K3-v-K2-tp3949446p3954868.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] sub receiver question
3dB accross the combiner using both recievers, for low band use not an issue. The digi audio recorder is great. On air play-back is excellent. cheers Paul zl1ajy I own K3 # 3355. Love it. Only thing I do not have is the digital recorder and the sub receiver. I am considering the sub receiver. I read in the operating manual that there is a -3 db loss when both receivers are using the splitter (common antenna). Is that interpretation correct ? I would probably not be using two antennas except on 160 and 80 which I operate sparingly in the winter. If I use the sub re -- View this message in context: http://n2.nabble.com/sub-receiver-question-tp3838936p3839265.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] [K1] internal battery - charging
Hi Mike The K1 cover is the original supplied with the kit. Smaller speaker volume is quite a bit lower, but I use a headset so it's not a big issue for my style of use. The bracket which the batts/speaker sit in can be slightly modified to sit lower in the chassis, this allows the kit cover to sit flat. Looks stock except the front speaker screw holes are visible. I have put a dyno label accross them with my callsign and rig serial number...looks ok. AA batts are sealed but leaks will occur no doubt. Like I say, it's nqr but sure beats swapping out battery packs. cheers from downunder Paul b zl1ajy Paul wrote: A mod here ... is fitting a simple internal charger circuit so the batt pack can be left in situ. The original cover is also used, with the smaller speaker. Fit is what could be politely called snug By original cover I suppose that you actually are refering to the replacement cover that comes with the KBT1, not the original K1 cover. (3) (5) I much preferred the appearance of the original K1 top cover/speaker assembly, compared to that of the KBT1. -- View this message in context: http://n2.nabble.com/internal-battery-charging-tp3677955p3689718.html Sent from the [K1] mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] [K1] internal battery - charging
Hello folks Recently completed a K1, all works well. A mod here which I know is nqr ( not quite right ) is fitting a simple internal charger circuit so the batt pack can be left in situ. The original cover is also used, with the smaller speaker. Fit is what could be politely called snug When external 13.5 volts is used, the batts get a very small charge, about 15 ma. Now here is the tricky bit..when the K1 is off, but the external supply left plugged in, the charge rate is approx 200ma. Yep I know it's not really correct, but sure beats taking the top off to replace cells. cheers Paul zl1ajy -- View this message in context: http://n2.nabble.com/internal-battery-charging-tp3677955p3677955.html Sent from the [K1] mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] Sub RX Noise Blanker - 3051
Hi Folks I can't seem to get the Sub RX noise blanker to function. Working fine on the main RX. When swapping to the Sub the NB icon is not showing and cannot be toggled on. Ver 3.27 thanks Paul zl1ajy -- View this message in context: http://n2.nabble.com/Sub-RX-Noise-Blanker-3051-tp3544785p3544785.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] K3 SW Tone - switch feedback audio level
Hello folks Very basic question..can the SW Tone feedback level be adjusted ? cheers Paul b ZL1AJY -- View this message in context: http://n2.nabble.com/K3-SW-Tone---switch-feedback-audio-level-tp3331586p3331586.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] [K2] KNB2 vs. electric fence.
Hi folks Interested to read the thead on electric fences. They are very common here around New Zealand, even in semi rural areas. The trick apparently is not the actual voltage which hurts, it's a gradual rise time which causes muscle contraction. I suspect this is why some fences are hard to knock out with the noise blanker. Certainly the high end devices in use down-under really pack a punch, and can supply energy to miles and miles of 5 wire fences. They are designed to simply burn off any grass or weeds which grow around the wires. My K2 works more or less on local fences, using low threshold. Sometimes it has very little effect. This could be related to pulse shape and width. Interestingly the K3 also is not so flash, the old Kenwood TS520S was a trooper in this dept. cheers paul b I've recently started picking up relatively strong pulses at 1 second intervals on my K2. I suspect they're coming from a new electric fence somewhere in the neighborhood. But where they're coming from is immaterial to my question. Should the KNB2 noise blanker be effective against this type of noise? I've always thought that such impulse type noise was exactly what noise blankers were supposed to work best on, but I hear no difference in the pulses whether the NB is on or off, nor at high or low threshold settings. This is making me question whether the NB is working at all. Any thoughts? 73 -- Joe KB8AP ___ Elecra -- View this message in context: http://n2.nabble.com/KNB2-vs.-electric-fence.-tp667424p3224062.html Sent from the [K2] mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] K3 3051 audio buzz in chassis on SSB
Hi folks K3 going perfectly fine here. Just curious about an odd audio buzz in the rear of the chassis under heavy SSB modulation. It sounds like transformer or frame slightly loose, nothing appears loose or un-done. Noticed when using the M1 audio record - playback, so normally don't hear it when using the mic. Wonder if there is any particular area to check ? Antenna tuner is bypass; Low vswr coax to antenna. cheers paul b -- View this message in context: http://n2.nabble.com/K3-3051--audio-buzz-in-chassis-on-SSB-tp3205249p3205249.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
Re: [Elecraft] K3 3051 audio buzz in chassis on SSB
Hi again folks Follow up from original post; I have run K3 on a dummy load on the bench. Removed top cover, and transmit 100W SSB from the audio digi-memory M1. The voice buzz is from the PA module, which I suppose is no big deal. Removed the PA and checked all screws were tight, and put back into service. No change to the audio buzz, it is my guess the PA final ferrite transformer magnetic field is pretty strong, vibrating the core. Interested to hear any follow up. thanks cheers from down under Paul b zl1ajy I have the same buzz, and no question it is not the case. I find it particularly irritating when I have the built in voice keyer running and am in a quiet shack. I can almost make out my voice from the sound My GUESS as I have not yet held it down while transmitting (my rig is at Elecraft for unrelated repair work), is that the heatsink for the internal amp is making the noiseat least the noise is coming from that area. Although I have to agree that everything in my rig also seems very secure to the touch. 73, Tom-N2YTF Can you damp it by putting your hand on any of the chassis panels? ~Brett On Sat, 2009-07-04 at 04:55 -0700, paulb wrote: Hi folks K3 going perfectly fine here. Just curious about an odd audio buzz in the rear of the chassis under heavy SSB modulation. It sounds like transformer or frame slightly loose, nothin -- View this message in context: http://n2.nabble.com/K3-3051--audio-buzz-in-chassis-on-SSB-tp3205249p3207438.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
[Elecraft] k3 odd sigs around 3495Khz
Hi Folks Completed K3 over the weekend. Has second RX module. Odd noise around 3.5 megs SSB With external antenna sounds like images from just above 3.5 cw. Antenna OFF, I can just hear a slight increase in noise approx 3505 to 3480khz Second RX is ok. Noted birdies and fixes. This may be related ? cheers Paul zl1ajy -- View this message in context: http://n2.nabble.com/k3-odd-sigs-around-3495Khz-tp2964852p2964852.html Sent from the Elecraft mailing list archive at Nabble.com. __ 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: http://www.qsl.net/donate.html
