Re: [Elecraft] K3 with KSYN3A 100Hz spurious

pport for some ideas and there was not a clear answer. I tested the radio afterwards with an SDR. The bandwidth was getting smaller and then everything was normal. Not sure what has happened. It must have been the transmit path somehow influencing the synthesizer (KSYN3). Ignacy NO9E -- Sent from: http:

Re: [Elecraft] KPA 1500 efficiency

power. Lower the voltage as in Expert amps. In old times, my 20A power supply to a 100W rig broke. I only had 5 A supply. Was good for 5W. But after adjusting with tuner for a max power, the output was 25 W. The tuner acted like a transformer. Ignacy, NO9E -- Sent from: http://elecraft

Re: [Elecraft] KX3 battery upgrade?

I never had a failure with Li-Ion batteries bought from batteryspace.com. They are connected externally to KX3 and charged by an AC charger. They last so long that seldom I need to charge during a trip. I use LiFePO3 for my 100W radio. Ignacy -- Sent from: http://elecraft.365791.n2

Re: [Elecraft] KX3 battery upgrade?

internal to KX3 makes it 15.4 V max and thsi is what the internal meter in KX3 shows. This is 12% over 13.8 V. Lasts a long time. Full power up to 15W. No problem in > 5 years. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.

Re: [Elecraft] raspy cw audio on K3--but OK after power cycle

Once my old K3 2k series had a signal that was > 20 KHz wide and jammed dxpeditions nearby. The problem subsided on its own although the receive was OK all the time. Perhaps reseating the modules would help. Ignacy NO9E -- Sent from: http://elecraft.365791.n2.nabble.

Re: [Elecraft] Why predistortion ?

relevant info to TX via Ethernet. Even better, have all in one box (K5_1500X). Probably the hardware cost is minimal. Nearly all the cost is in software dev't. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft

Re: [Elecraft] PX3 signal artifact - still seeking a solution

Do artifacts disappear when you have USB cable connected to the laptop but disconnected from PX3? Perhaps the USB cable acts like an antenna. For RFI transmitted via USB cable, try USB isolator. E.g., https://www.amazon.com/SMAKN-Isolator-Digital-Isolation-Industrial/dp/B00XXPO4UG Ignacy NO9E

Re: [Elecraft] Upper limits of KPA500?

trick go because of SWR. protection. Ignacy, NO9E -- 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:

Re: [Elecraft] KPA1500 Tuner Question for the Group

were used at same frequency, tuning for one antenna automatically brings tune in the second. Very convenient for A/B comparisons. The tuner displays L, C and SWR. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] 75 ohm coax

found Rg6's 50 Ohm equivalent on ebay. Altelix AX240 for $99/1000ft. Measured parameters same as LMR240. The plus of cheap and good 1000-ft roll (with crimp connectors that can be attached in 30 sec) is that the coax can be cut as needed, with no worries about cost. Ignacy NO9E -- Sent from

Re: [Elecraft] K3 on SSB

Many contesters with large budgets use K3 to win or obtain top scores in SSB contests. This means that K3 is competitive on SSB with other radios, and its flaws in SSB if any are balanced by its advantages. Early K3 had large AF distortions, fixed by a simple modification. Ignacy, NO9E -- Sent

[Elecraft] 20 KHz wide signal in K3 on CW

. The first one is -15db from the main signal, the second -25db, and 3 KHz away it is -35 db. I checked the radio later with a SDR. It had spurs but not as big. I checked the radio today, and the spurs seem almost gone. My K3 is #2283. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2

Re: [Elecraft] KPA-1500 efficiency with a Low-Power Setting

supply can deliver only one voltage, not much can be done. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net

Re: [Elecraft] KPA1500 Antenna Select Suggestion

I use MFJ-998 that has two ports attached to 2 crisscrossed dipoles fed by ladderline. When frequencies are pretuned, recalling tune on ANT1 automatically matches ANT2 so that switching to ANT2 does not need any extra match. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] Full Break-In (QSK)

transmitting and switch ANT to 2nd rx after that. It may be too much programming for Elecraft, though. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo

Re: [Elecraft] Subject: Re: Operating from a retirement home

You are lucky that RFI is low to a degree that you can still make contacts. I have seen towers in HOA locations in FL so apparently not all of them are strict. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] Reaching across the chronological divide

, talk, eat and drink. Also participate in communal activities of setting up antennas and celebrating the succces of it. Being alone in an HOA restricted apartment with signals barely heard because of compromised antenna and high RFI is hardly stimulating. Ignacy, NO9E -- Sent from: http

Re: [Elecraft] Feature density of portable transceivers: K1 vs. KX2

bility of fire. I have external batteries but the beauty of KX2 is that the battery is inside. Ignacy, NO9E On Mon, Dec 9, 2019 at 2:09 PM Don Wilhelm wrote: > The KX2 battery will NOT charge from the external power jack - the > lithium battery must be removed for charging. Unless handled wi

Re: [Elecraft] Feature density of portable transceivers: K1 vs. KX2

USB overnight without pulling the internal battery. Just like the cell phone. Ignacy, NO9E On Mon, Dec 9, 2019 at 12:55 PM Gwen Patton wrote: > Use a USB-C PD power bank, and a USB-C power sink, and you can power the > KX2 handily. I can power my KX3 that way, and most of my other QR

Re: [Elecraft] Feature density of portable transceivers: K1 vs. KX2

This is a QRP radio that likes traveling. Mine has even been on a small boat ride in Adriatic sea... Or working DX SSB in a contest big time (with 9A1A antennas). If only a USB charge can be added. I am afraid that the radio will survive only so many case openings... Ignacy, NO9E -- Sent from

Re: [Elecraft] NCC-2 noise canceller with K3s?

I have NCC-2, 3 el-HiZ and a Wellbrook loop. NCC2 is not useful for weaker antennas until one adds amplifiers and, for peace of mind, antenna guards. Very expensive. I had it once miswired and it blew the inside - no fuse. The only time I use it now is for power line noise canceling. Ignacy

Re: [Elecraft] K3 CW Text Decoding

I feel that KX3 has a much better CW decoder than K3. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net

Re: [Elecraft] We Need More Power

from a very good VY2 location on 40m, for their first NA contact. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http

Re: [Elecraft] WSPR with KX3 and WSPR_Beacon/Android

The phone had 1-2 sec delay and setting of an Android phone to time standard is impossible without a hack. I tried using a laptop with time synchronized and again it did not work. I must be doing something wrong with my KX3. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] SO2R with 2 K3s, one KPA-1500

was not designed for SO2R with a single amplifier. Buy a second one or get something else (Expert or 4O3A when available). Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net

[Elecraft] WSPR with KX3 and WSPR_Beacon/Android

I am trying to use WSPR Beacon under Android with KX3 for Android to check antennas. The beacon transmits and the signal appears but there are no reports. K3 with WSPR under WSJT works fine. I tried USB and data modes. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] KPA 1500 dummy load recommendations

cantenna dummy load ( MFJ-250), also immersed in water. Or attach 1-2 small fans to MFJ-264. Ignacy, NO9E On Wed, Jul 24, 2019 at 11:06 AM Larry Gauthier (K8UT) wrote: > Don, > > Look carefully at the power de-rating curve on your MFJ-264. I also own a > KPA1500, and built my own DI

Re: [Elecraft] KPA 1500 dummy load recommendations

I have MFJ-264 and MFJ-250. Both work. Aside from experiments , both are gathering dust as there is little purpose of using dummy loads for solid-state amps. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft

Re: [Elecraft] Feature Request: Shifting VFO

Is it a feature of ICOMs? Neat as QSY to a far away frequency can be done without pressing any extra button. On the other hand, band-segment memories and clicking on spots makes long-range QSYing less important. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

[Elecraft] Settings for CW decoder in K3

I am trying to use the CW decoder in K3 to help copy fast exchanges. It is hit and miss. The CW decoder in KX3 is better and so is the external CW Decoder by WD6CNF (spkr to MIC). Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] Connecting SDRPlay to P3 IF OUT, to CW Skimmer

Connecting SDR may be simpler. I think HDSDR has an option to sent I/Q signals to the Skimmer. I use AS-RXFEP - Receiver Front End Protector from Array Solutions to protect SDR. I use TX vertical or RX loop as receive antenna with AS-RXFEP - Receiver Front End Protector from Array Solutions, close

Re: [Elecraft] SWR - does it matter?

antennas. Second, use antenna tuner. Third, accept inefficiencies. Personally, I would not consider a solid-state amp without a built-in tuner. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home

Re: [Elecraft] Tinnitus and the K3 RX EQ and Related Variables

to RFI, had some background noise and it took lots of space. Now I use RX EQ in K3. Good but not as good as the manual equalizer. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http

Re: [Elecraft] Why are the batteries internal to the KX3?

cells in place, like: https://www.batteryspace.com/1-2cratepolymerli-ioncellspacks.aspx They will need some external connection for charging. I use to have such batteries inside K2. Light, fast-charging, and never a sign of trouble. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2

Re: [Elecraft] KPA1500 PA Current

shows 1.8:1. But no problem in the end. Ignacy, NO9E -- 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

Re: [Elecraft] K2 still a viable portable contest station?

it is KX3 driving Expert 1.3k for > 1 KW. The Expert weighs 20 lb and has ATU to trim less than perfect antennas + automatic 110/220V switching. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mail

Re: [Elecraft] OT: Astron linear PS regulation issues

I wanted to love a 45A Astron but it was heavy and hummed. Sold for peanuts at a hamfest. Replaced by Jetstream JTPS32MAB. Probably same as MFJ-4230MV and many others. Small, quiet and cheap. Excellent regulation. If it dies, it is $80. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2

Re: [Elecraft] Non-Resonant Antennas and Chokes

coast to coast on 160m! Ignacy, NO9E -- 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

Re: [Elecraft] Yama CM-500 Replacement

CM-500 is OK. It had so-so sound insulation (not good with loud amp) and it disintegrated. Now I use Sennheiser PC 350. Much better built and better sound insulation. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] Less Than Perfect Antennas

cient when fed by coax 2) require a balun because of off-center feeding especially if the radio is not battery operated, 3) are not good for DX unless they are high enough, and 4) they may be directional where they are > 1/2 wave because of strong lobes. Ignacy, NO9E -- Sent from: http://el

Re: [Elecraft] Wish I had a KAT1500

setting in a fraction of a second. It has output for 2 antennas. When each antenna is prematched, once you change frequency with antenna A and the switch to B, it is automatically matched as well. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] PROPOSAL: K2/10 Battery LiPO / 8AA carrier option

LiFePO3 is good choice if size does not matter. Li-Ion is half weight and size. Personally I use LiFePO3 for my 100W radios. I use Li-ion for KX3 for travel. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] PROPOSAL: K2/10 Battery LiPO / 8AA carrier option

ing across all continents. Very light. But I was always afraid that something would short causing trouble. With batteries with PCB for limits, the risk is far lower. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.

Re: [Elecraft] Looking at KPA1500

capacitor by the output connector. But it is better to have such problems outside of the amp. Another choice is to have an AB switch where the same antenna is connected to A directly and to B via capacitor that lowers the SWR where otherwise it is too high. Ignacy, NO9E -- Sent from: http

Re: [Elecraft] KPA-1500 Efficiency As A Function of Input Power

ere at > 12 V and 5 W another ratio is used in the final transformer, reducing power input by almost one half. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.q

Re: [Elecraft] Trade KX2 for KX3

Did you trade? I have KX3 and want to travel with something lighter. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http

Re: [Elecraft] K3s+KPA500 SSB audio distortion

Could it be RF feedback? You can check it by transmitting into a dummy load or lowering the drive power. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman

Re: [Elecraft] Operating KX3/KXPA100 on LiPO3 batteries??

I use Bioenno 2 x 6Ah with a 100W rig. During CW contests in S in break-in mode they last > 3 hours. No problems. The advantage of 2 x 6A is that they can be taken on the airplane without a permission. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.

Re: [Elecraft] Amp comparisons

with SPE 1.3k. Smooth integration. Light. No PS spurs. 4 antenna connectors with two antennas per band. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman

Re: [Elecraft] KX3 hardshell case question

For a few years my KX3 travels in a Pelican case that is about 9 x 6.5 x 4. Aside from KX3, inside there is space for a log, 2 spools of wire, KX3 keyer, binding post, and 4S2P Li-Ion battery. The battery lasts a few 2 hr outings. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2

Re: [Elecraft] Expert 1.3 to KX3

I used KX3 + 1.3k with Dan's cables during expedition to CE0Y in CQ. Read about experiences in CQ Magazine (Oct 2017?). -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home:

Re: [Elecraft] KPA1500 Linearity

that has 6 transistor modules rated at 300W. Saturated power around 2.0 KW as measured by LP100; 2k's meter shows 2.4 K. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http

[Elecraft] Recessed pins for CW paddle in KX3

The CW paddle in KX3 is attached to a 4 pin connector inside KX3. Recently two bottom pins recessed creating a short. I pulled them back and was able to solder one pin but the other pin is hard to reach. Did anybody experience a similar problem? Ignacy, NO9E -- Sent from: http://elecraft

Re: [Elecraft] OT Tuner ranges

There are reports online that 1:1 has lower losses. My experience is that with lower-range tuners 1:1 does not cover some frequencies but 4:1 does. Ignacy, NO9E. -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing

Re: [Elecraft] DSP vs. non-DSP portable transceivers

. Average age of ham radios is around 65 (QST). Old "truths" die slowly. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft

Re: [Elecraft] K3 Preamp 2

but it causes frustration when trying to call. I remember frustration as VK2/NO9E hearing many US on 10m, with little success except contesting. Also the band full of US station during the ARRL 160m contest. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] New Sub RX

E on 160m last month with $599 FT-891 and he was loud! Ignacy, NO9E -- 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

Re: [Elecraft] BNC connector oddity on KX3

showmecables.com. The cables turned out to be 60 Ohm and many connectors are poor. I like cables at hamfests from old professional equipment. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home

Re: [Elecraft] Best Batteries for KX-3?

. Ignacy, NO9E -- 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

Re: [Elecraft] Flying with a Spiderpole

I took 12m Spiderpole with no questions and no extra fee. For smaller height I use a light 7.5m pole that collapses to some 60cm and fits in a medium suitcase. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] Memories in K2 not working

Don, Thank you for the info.He has K1. I will ask him to contact the Elecraft group or you. Ignacy, NO9E On Sat, Jan 27, 2018 at 2:12 PM, Don Wilhelm <donw...@embarqmail.com> wrote: > Ignacy, > > How is he trying to load the memories. He must use paddles connected to &g

Re: [Elecraft] KPA1500 ATU - ability to handle more than two antennas

. But it was brilliant working with KX3 as CE0Y/NO9E. So I am looking for an Expert replacement -quiet both acoustically and RFI, as automatic and with good CAT. Perhaps KPA1500-2 will be it. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

[Elecraft] Memories in K2 not working

I sold my K2 and the person who bought it found that CW memories are not working. I have never used them. Any idea what could have gone wrong? Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list

Re: [Elecraft] KPA1500 ATU - ability to handle more than two antennas

If there are only two antennas per band, perhaps this is doable with dual-input antenna switch (like DXE-RR2X8B) and Microham StationMaster. For each band, MH SM selects one antenna for A and another one for B. To change an antenna within a band, select A or B in the amp or via CAT. Ignacy

Re: [Elecraft] KPA1500 ATU - ability to handle more than two antennas

with an external switch. Only 2 connectors is a reason why I am not placing the order for KPA1500. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo

Re: [Elecraft] FA-VA4

or heavier. Ignacy, NO9E -- 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

Re: [Elecraft] Antenna Analyzer (FA-VA4)

The choice of analyzers is not that simple unless cheap price is the only factor. I have four analyzers: Rigexpert 230Pro, FA-VA4, VNWA3 and Mini60. Rigexpert covers up to 230 MHz and costs about $500. It is the easiest to use and has the most functionality. Less accurate because it does not

Re: [Elecraft] DXE NCC-2 & K3/K3s

especially that NCC2 adds some 10db loss. 3. switch for multiple antennas. 4. smaller. Ignacy, NO9E Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman

Re: [Elecraft] KX3 Field Ant. for 80/40/30

. This is obvious after a bit of thought. A vertical or inv L ( or low inv V) needs either good ground or lots of radials for small ground losses. With endfed, there is one radial, the feeder. So excellent performance by the beach, not bad in good ground, so so in poor ground. Ignacy On Nov 21, 2017 7:58 PM

Re: [Elecraft] KX3 Field Ant. for 80/40/30

s.com" perfected a transformer that has very small losses and does not self-destroy at high power. But in inv V configuration, it is way down from a flattop. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecra

Re: [Elecraft] (OT) - Unplanned Discovery

How much noise from "warts" enters the antenna depends on the antenna. Close and low antenna will pick up more and high and far will pick up less or nothing. Also, balanced or with a good balun will pick up less than unbalanced or where KX3 is a counterpoise. Ignacy, NO9E --

Re: [Elecraft] KX3: CM500 best price/use with

GE foldable headset. Good sound but not closed. Much smaller than CM-500 and $8.75 at Walmart. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo

Re: [Elecraft] K2 and KX3 with A/B switch

a million,QSOs mostly portable using K1. To many, he put ZA on the map.See his QRZ web page. Ignacy, NO9E On Thu, Nov 2, 2017 at 12:46 AM, Wayne Burdick <n...@elecraft.com> wrote: > Ignacy, > > I’ve never noticed the KX3’s AGC pumping, so I suspect something else. > Small sp

[Elecraft] K2 and KX3 with A/B switch

., with little effect. K2 has to go because it is too big. But it is a fine radio. Has anybody found AGC in KX3 harsh? Any way to do something about it other than running RF gain? Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] KLPA3A power transistor thermal stress concerns

at 12 W by 1 V decreased IMD3 by about 10 db. I assume that the LPA in K3 is similar to the amp in KX3. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman

[Elecraft] KXPD3 problem - solved

KXPD3 was not fully inserted, the recessed pins did not make contact; the ground connection was through the screws. I pulled and resoldered the pins. Now everything is fine. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] KXPD3 problems - Solved

The two pins in KX3 that mate with KXPD3 were recessed a few mm. After pulling back, the key works fine. I must have inserted KXPD3 too hard, and the pins gave out. I wonder how to secure the pins from recessing. Crazy glue, epoxy, or something else. Ignacy, NO9E -- Sent from: http

Re: [Elecraft] Mobile from 117 VAC

This is entirely unnecessary. Use the cigarette lighter and MFJ power conditioner. While you radio requires 20A peak, the power conditioner reduces it to about 8 A average, which the cigarette lighter will do easily. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] KX3 with BL2 Question

with touching. So BL1 insulates KX3 from the antenna and 1) reduces impedances to levels more easily matched by KXAT3 and 2) introduces own losses. I prefer BL1 because its better to heat the balun than the tuner. Ignacy, NO9E -- Sent from: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] KXPD3 problems

The problem with KX3 in TX when KXPD3 is fully inserted started just 2 weeks ago. Perhaps one air travel with rough treatment too many. Before everything was fine. If I put a blade of a small pocket knife between KX3 and KXPD3, the key works OK. Ignacy, NO9E -- Sent from: http://elecraft

[Elecraft] KXPD3 problems

and nothing is loose. Any idea what to do? Ignacy, NO9E -- 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

Re: [Elecraft] 14 volt batteries?

12V/50V conversion inside. With newer generation and predistortion + more intelligent design, radios may limit themselves to max power at given voltage, all with excellent IMD and high efficiency. Say 80W at 10V to 150W at 16V. Ignacy, NO9E -- View this message in context: http://elecraft

Re: [Elecraft] Is K4 talk verboten?

display with connection to external display - built in PS Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/Is-K4-talk-verboten-tp7633604p7633637.html Sent from the Elecraft mailing list archive at Nabble.com

Re: [Elecraft] Camino de Santiago portable operation from Spain

the trail and made a few CW contacts with KX1 by spreading antenna wires on rocks. KX1 is light but only 2 W. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/Camino-de-Santiago-portable-operation-from-Spain-tp7633448p7633460.html Sent from the Elecraft

Re: [Elecraft] RX antenna protection

This is my experience. Making a large-signal preamp is usually a waste of power since it is a mixer that is a limiting factor. I can believe that a device from DX Engineering can be poorly designed. Have NCC-2. Weighs like a tank but fragile like a baby. Ignacy, NO9E On Tue, Aug 15, 2017 at 3:59

Re: [Elecraft] RX antenna protection

. Of all 3, K7TJR was the best by far. BTW, the RX ANT input in K3 is protected by a RF activated relay. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/RX-antenna-protection-tp7633402p7633412.html Sent from the Elecraft mailing list archive at Nabble.com

Re: [Elecraft] K3 SHUTTING DOWN OPERATING JT65

Older versions of K3 had a problem with a trap or LPF in PA where at higher frequencies and higher power the current increased to a point of PS shutdown. Contact Elecraft for a fix. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-SHUTTING-DOWN-OPERATING

Re: [Elecraft] KX2AT2 vs T1 Tuner?

The balun made of a jumper between the radio and the tuner works at low SWR so its losses are negligible. The same jumper on the outside will work at possibly very high SWR and may have substantial losses. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com

Re: [Elecraft] KX2AT2 vs T1 Tuner?

a toroid. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/KX2AT2-vs-T1-Tuner-tp7632557p7632574.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home: http

Re: [Elecraft] BL2 -- Antenna Balun Usage

it is hot or not depends not only on power but also on impedances to transform. I used BL1 with too short wires and the balun was hot but I was making contacts. For precision measurements buy VNA that can be calibrated. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2

Re: [Elecraft] KPA-1500 with KX-3/KXPA-100

is does not invalidate the warranty. My modified Expert needs from 5 to 8 W for a KW so KX3 drives it perfectly. Each extra stage increases distortions and adds cables. So doing it directly is beneficial if it can be done. Ignacy, NO9E -- View this message in context: http://elecraft.365791

Re: [Elecraft] KX2 Heatsink

it is. Many "free" websites now change designs, often for the worse to a user, to generate more advertising. Perhaps it is due to an ad blocker with a specific browser. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/KX2-Heatsink-tp7630670p7630736

[Elecraft] Unequal signal form dual receive in KX3

With dual receive, my KX3 has different gains from VFO A and B. This is easily heard when switching pressing A/B. When in dual receive, a weak station in VFO B may disappear as VFO B. I do not hear this in K3. When A/B switching, the signals just change sides. Any workaround? Ignacy, NO9E

Re: [Elecraft] OT - operating QRP at same park

is same as in KX3. The bandpass filters in K3 also cover two bands but have extra caps switched in, probably for single band coverage. This would explain why K3's are not interfering much cross band. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/OT

Re: [Elecraft] KX2 and Sherwood Eng. RX Performance Ranking?

including good antenna tuner 2) well compressed signal on SSB if on phone If KX2 is like KX3, big yes to 1) and not much to 2). But you can always buy TT-715 and increase the punch of KX2 in SSB by 2-4 times. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2

Re: [Elecraft] K3 Receiver mush

and after every contest. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/K3-Receiver-mush-tp7627220p7627275.html Sent from the Elecraft mailing list archive at Nabble.com. __ Elecraft mailing list Home

Re: [Elecraft] 9:1 Balun

endfeds at myantennas.com is just warm at a KW level. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/9-1-Balun-tp7626310p7626364.html Sent from the Elecraft mailing list archive at Nabble.com

Re: [Elecraft] Random wire lengths for antennas

. In all cases, two random wires were the best, often by far, across bands. But setting up a portable vertical is easy, one long wire is hard, and 2 long wire is the hardest. In a nutshell, random wires are fine with exact length unimportant. If tuning problems, use a small balun. Ignacy

[Elecraft] K3 and right channel dead

During a very successful 160m run, K3 stuck in transmit, the SS amp switched off and then K3 turned off. After turning on, the right channel is gone. With SUB on, both signals are in the left ear. Any possibility it is not a hardware fault? Ignacy, NO9E -- View this message in context: http

Re: [Elecraft] KPA-500 Running hot on 20m

I wrote an article on fan noise including in amplifiers. See http://www.eham.net/articles/38328. Ignacy, NO9E -- View this message in context: http://elecraft.365791.n2.nabble.com/KPA-500-Running-hot-on-20m-tp7625577p7625633.html Sent from the Elecraft mailing list archive at Nabble.com

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