[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.

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:

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

[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

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.

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

[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

[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

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

[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

[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

[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,

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

[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

[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

[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

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

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

[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

[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

[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.

[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

[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

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:

[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

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

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.

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

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

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

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

[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.

[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

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

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

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

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

[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

[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:

[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.

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

[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

Re: [Elecraft] K3 3051 audio buzz in chassis on SSB

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

[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