Re: [Elecraft] KPA1500 schematic file

That thing just isn't that complicated... I've reverse engineered a lot of it having to fix mine a few times... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net

[Elecraft] KPAIO3A

Anyone have a spare KPAIO3A board that you are willing to sell? Dr. William J. Schmidt - K9HZ J68HZ email: <mailto:b...@wjschmidt.com> b...@wjschmidt.com __ Elecraft mailing list Home: http://mailman.qth.net/m

Re: [Elecraft] WTB: Elecraft K1 Tilt Stand

I just redesigned one I made for 3D printing. It's very close to the original. OK, closer to a blatant knockoff. The only real difference is that the design was changed to accommodate the different characteristics of 3D printing vs using the original aluminum stock. If Elecraft has no

Re: [Elecraft] TS-890 vs K4D performance?

So, just asking do you ever compare what you buy against a competitor's products? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. email: b

Re: [Elecraft] A dumb question about lightning

of the breaker box in a direct strike into a smoldering pile on the floor. My take-away from that is the only marginally safe place for my expensive radios was as disconnected and in the shipping boxed in the (faraday) closet in the basement during a storm (just like an airplane). Dr. William J

Re: [Elecraft] Grounding, Lightning & Attic Antennas

A bigger concern for attic antennas is the use of "radiation shield" plywood on the roof of houses build in the last 10 years or so that turn the attic into a Faraday cage. The single most annoying reason cell phones don't work inside your houses anymore. Dr. William J. Schmidt -

Re: [Elecraft] [OT] A dumb question about lightning

an prepare but you will never be sure. Static is something else. All of the antennas I design and implement have GROUNDED elements or static chokes to ground to reduce static to a minimum. You learn this with experience. Dr. William J. Schmidt - K9HZ J68HZ -Original Message- From: ele

Re: [Elecraft] [OT] A dumb question about lightning

Even the methods in that book are considered sub-standard by the broadcast industry... The only think that is a sure bet is to completely disconnect your radio and put it back in the shipping box. Dr. William J. Schmidt - K9HZ J68HZ email: b...@wjschmidt.com -Original Message

[Elecraft] W-2 Cable Length

Good Day.  Does the length of the data cable between the W-2 meter and its sensor matter?   I would like to use substantially shorter cable than came with the kit.  Thanks.   K8JHR __ Elecraft mailing list Home:

Re: [Elecraft] TL-922

Yes, the K3 can only handle key out of +200 VDC at 5A... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Moderator: North American QRO Group at Groups.IO. Moderator: Amateur Radio Builders Group at Groups.IO. email: b...@wjschmidt.com -Original Message

Re: [Elecraft] Using ANTLION MODMIC 4 with Elecraft K3

Same here... it's a requirement at my contest station (to have one) so that we don't mess with gains and frequencies due to other mics during a contest when the ops change. Just plug into the back panel "MIC" connector and turn on the REAR BIAS. Dr. William J. Schmidt - K9HZ J

Re: [Elecraft] K4 & KPOD

I've used two KPods connected to the K4 at the same time. The buttons are the same of course but the knobs can be VFO A and VFOB which is kind of handy at times. ​Chuck Hawley c-haw...@illinois.edu Amateur Radio, KE9UW aka Jack, BMW Motorcycles From: Ramon

[Elecraft] K3- part fell out

Yaw! I have been working with SMD -components. Marking; 3k3 is A 3300 ohm (3.3 kOhm) resistor 3.3.ohm resistor is marked 3R3. As I have been working as A radio- TV mechanics I sometimes was targeted with A joke. "Put an extra component loose somewhwere in an equipment and cause a nerval

Re: [Elecraft] [POSSIBLE SPAM] Re: [POSSIBLE SPAM] Re: [K3] Odd transmit power output behavior on TX DATA

Replaced the transistors (RD devices)... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ -Original Message- From: KJ7SOY Sent: Friday, December 30, 2022 11:26 AM To: b...@wjschmidt.com Cc: Mark Musick ; aa...@mac.com; Joe Subich, W4TV ; Elecraft

Re: [Elecraft] [POSSIBLE SPAM] Re: [K3] Odd transmit power output behavior on TX DATA

I had this same issue with two of my K3s... Failed the calibration. Was an issue on the 10W board both cases. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Mark Musick Sent

Re: [Elecraft] [K4][K3][K2] FS: David Clark H10-20 Aviation Headset

though. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Moderator: Amateur Radio Builders Group at Groups.IO. email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of jerry Sent: Saturday, December 17, 2022 2

[Elecraft] For Sale - AF1 Audio Filter Kit - Built

Elecraft AF1 Audio Filter Kit - Built - no case.  As I recall, I built it and put it in a plastic bag in the parts closet, so it was tested but not used for any length of time.  I believe I have the cables that came with it - buyer gets what I have with it.  I will also include the instruction

Re: [Elecraft] KPA1500 RELIABILITY

they are much more forgiving! Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ email:  b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of j...@kk9a.com Sent: Sunday, October 30, 2022 10:44 AM To: elecraft

[Elecraft] k pod repair

Here is a reply I received from Elecraft when I needed a switch. They did send me a couple as well. "Thanks for contacting Elecraft. Apologies for the slow turn time. The eight switches in a KPOD in question are Elecraft P/N E640062, described as " SWITCH,TACT,12mm,SMD". Our distributor DigiKey

[Elecraft] Elecraft K4

Is the 100 watt PA turned off in the menu? Look at KPA4 PA Option and see... ​Chuck Hawley c-haw...@illinois.edu Amateur Radio, KE9UW aka Jack, BMW Motorcycles __ Elecraft mailing list Home:

Re: [Elecraft] Subject: Re: [K3] KIO3 failure mode

Lightning seems to me the topic on all of the groups currently... so we must be in storm season! I worked with a guy at Honeywell who was trained in atmospheric discharges in his graduate work at MIT. I guess Honeywell was looking into survival of military equipment at the time. He knew I

Re: [Elecraft] [POSSIBLE SPAM] [K3] KIO3 failure mode

Reverse engineered or just a better/ more modern design?  -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Al Lorona Sent: Tuesday, August 23, 2022 4:06 PM To: Elecraft Reflector Subject: [POSSIBLE SPAM] [Elecraft] [K3] KIO3 failure mode Ah,

[Elecraft] KPA500 Parts

the gate-source threshold is maximum of 4V. Anyone know what the value of this thing is before I just stuff in a 4v Zener? Dr. William J. Schmidt - K9HZ J68HZ __ Elecraft mailing list Home: http://mailman.qth.net/mailman

[Elecraft] Growing SWR-long press of tuning button

Yaw! I just wonder. U told using EFHW. Are You sure that the fenomenon doesn't cause of the Un-Un in Your antenna warming during tuning signal? -- 73 & CU Pena, OH2G, OH2CG __ Elecraft mailing list Home:

Re: [Elecraft] [POSSIBLE SPAM] Re: KPA500 / 270V ERR

If you check the schematics, the 270V is made/comes from the power supply... BUT the 60V enable relay (feeds the voltage divider and read on the front panel) is on the PA board... -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Andy Durbin Sent: Sunday, July 17,

Re: [Elecraft] KPA500 / 270V ERR

I think it may actually be the other way around... The 60V relay does not close if 270V is missing? -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Andy Durbin Sent: Sunday, July 17, 2022 6:49 PM To: elecraft@mailman.qth.net Subject: [Elecraft] KPA500 / 270V ERR

[Elecraft] Pignology Remote kit for sale

New never used complete with printed color user manual Shipping included conus PayPal only $150 KE9UW c-haw...@illinois.edu Amateur Radio, KE9UW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] [POSSIBLE SPAM] Re: [POSSIBLE SPAM] Common K3 failure modes???

AB7E On 6/22/2022 9:40 AM, Dr. William J. Schmidt wrote: > I actually designed and build a K3IO "ethernet" replacement KIO3 > board...before the USB version was available. I probably have the only > "ethernet" K3 on earth. I may revive that card and replace t

Re: [Elecraft] [POSSIBLE SPAM] RE: Common K3 failure modes??? - K3 Ethernet

the radio though a built in Ethernet line? 73, Mike Cizek W0VTT -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Dr. William J. Schmidt Sent: Wednesday, 22 June, 2022 11:40 To: elecraft@mailman.qth.net Subject: Re: [Elecraft] [POSSIBLE SPAM] Common K3 failure modes

Re: [Elecraft] [POSSIBLE SPAM] Common K3 failure modes???

I actually designed and build a K3IO "ethernet" replacement KIO3 board...before the USB version was available. I probably have the only "ethernet" K3 on earth. I may revive that card and replace the ethernet stuff with USB parts so that I can fix some of these K3's laying around. I think

Re: [Elecraft] [POSSIBLE SPAM] Common K3 failure modes???

My K3 failures always come in the form of either K3IOx failures (extremely common) or the 10W module. Everything else seems to hang together. -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Geert Jan de Groot Sent: Wednesday, June 22, 2022 3:30 AM To:

Re: [Elecraft] [POSSIBLE SPAM] Re: WTB: K4

. If you find a K4 used, it will be a miracle. Dr. William J. Schmidt - K9HZ J68HZ email:  b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Jim Brown Sent: Monday, June 20, 2022 4:31 PM To: elecraft@mailman.qth.net Subject: [POSSIBLE SPAM] Re

Re: [Elecraft] Kanga R2pro kits

Here are two ideas... Si5351A VFO/SigGen (qrp-labs.com) Si5351A VFO/SigGen - QRP Labs 3-30MHz Low Distortion Sinewave Signal Generator. The Si5351A Synth in the VFO/SigGen kit produces a squarewave output. Starting in

Re: [Elecraft] P3SVGA availability

Ted, I responded via your email address. I have both P3 options available (P3SVGA and P3TXMON). Ed, W9EJB Sent from my iPad __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] Elecraft Service

r. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Ronnie Hull Sent: Thursday, April 21, 2022 9:47 AM To: Wayne Burdick Cc: Elecraft Reflector ; rikoski Subject: Re: [Elecraft] Elecra

Re: [Elecraft] [POSSIBLE SPAM] KPA500 Mosfet SD2933 vs VRF2933

Mouser has 15 match pairs in stock today. That’s what you want anyway, not single devices even though it may not matter. You are paying $6 for the matching process. VRF2933MP Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ email:  b...@wjschmidt.com

Re: [Elecraft] [POSSIBLE SPAM] Re: Shipping via UPS - A Lesson Learned the Hard Way

sending you coupons for 10-20% off shipping. I found this out using UPS for my businesses. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Mike

[Elecraft] ELECRAFT HAT is now in stock...

I'm wondering if the newest hat has an adequate crown. I have three of them and the first one seems better than the second one. I gave that one to my wife and bought yet another. It's not so good either. SO...I bought a Northern California DX Foundation hat which was suggested here and it's

Re: [Elecraft] KPA 500

During field day, I've seen unwanted leakage change the band on the amp from another transmitter during the receiving cycle. Another good reason to hard-wire it. email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Wes Sent: Wednesday,

Re: [Elecraft] [POSSIBLE SPAM] Re: FW: KPA500 faults

Correct... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Mike Fatchett Sent: Thursday, March 3, 2022 6:31 PM To: elecraft@mailman.qth.net Subject

Re: [Elecraft] FW: KPA500 faults

. Changes with heat load. This amp is in the Caribbean and there is plenty of excess heat and corrosion. (nb. I just replaced the current sensing resistor in my K3S for the 100W module due to a hair-line crack... surmise it was heating). Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5

[Elecraft] KPA500 faults

this amp and get it on the air for the contest this weekend? Multiple notes to Elecraft have gone unanswered. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ email: <mailto:b...@wjschmidt.com> b...@wjschmi

Re: [Elecraft] D-104 Mic Element Replacement

ell - the FET is powered by the bias voltage from my K3 > or K2. I know that does not help if the original D104 mic element has > gone bad. > > 73, > Don W3FPR > > On 2/22/2022 8:19 PM, Dr. William J. Schmidt wrote: > > No replacement available... > > > > Well...

[Elecraft] D-104 Mic Element Replacement

d full of "authentic Astatic, old stock" the later crystal replacements... brand-new... from one of the big electronic houses like Mouser or Digikey (can't remember which one actually). I think they were in the $28 each... Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K

Re: [Elecraft] [POSSIBLE SPAM] Re: D-104 Mic Element Replacement

https://www.theharpmicshop.com/crystal---ceramic-mic-elements.html http://www.kenselectronics.com/lists/micpart.htm#Cartridges Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ email:  b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qt

Re: [Elecraft] [POSSIBLE SPAM] HI CURR indicator on K3S display

the gain at 50W (fine at 5W) tells me I may have a bad transistor. Ordered a fist full of transistors... will take the module back to the USA and put it on one of my RF bench at work to diagnose it further. Also have a spare LPA3 if all else fails. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK

Re: [Elecraft] KAT500 drops out during voice peaks

happier. > > 73, > Jack, W6FB > > >> On Feb 3, 2022, at 6:20 PM, hawley, charles j jr >> wrote: >> >> I've been having my tuner go to high swr a random voice peak. >> The utility shows the right settings after a drop out but the Amp Key >> Inter

[Elecraft] KAT500 drops out during voice peaks

I've been having my tuner go to high swr a random voice peak. The utility shows the right settings after a drop out but the Amp Key Interrupt box is checked. And the swr showing on the LEDs is high. Not sure what is going on. I get it back to operating at low swr by doing a tune. ​Chuck Hawley

Re: [Elecraft] [POSSIBLE SPAM] RE: HI CURR indicator on K3S display

5W RF power calibrates fine. The 50W fails. Gonna remove the 100W module today and see if I have a bad transistor… Difficult to do here on the island… have not built up my test equipment stash here much more than a DVM and an antenna analyzer. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK

Re: [Elecraft] HI CURR indicator on K3S display

Unfortunately, my metering outside of the radio shows only 10.1 amps when the radio shows 20+ amps. Radio and outboard voltage metering showing 13.0 VDC. Also shown 6.6A for 5W out. Something is up. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ email

[Elecraft] HI CURR indicator on K3S display

else delt with this? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ email: <mailto:b...@wjschmidt.com> b...@wjschmidt.com __ Elecraft mailing list Home: http://mailman.qth.net/m

[Elecraft] FW: [POSSIBLE SPAM] Re: On ground - in ground radials

points. Now, touching at different phase and amplitudes. What happens? You know the answer. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Mike Fatchett Sent: Monday, January 17

[Elecraft] Cleaning solder flux

and other water damaged goods removed of course) followed by a good drying (leaf blower). Works fine! Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ -- This email has been checked for viruses by AVG. https://www.avg.com

Re: [Elecraft] [POSSIBLE SPAM] Re: Cleaning solder flux

in the driveway (paper and other water damaged goods removed of course) followed by a good drying (leaf blower). Works fine! Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ Owner - Operator Big Signal Ranch – K9ZC Staunton, Illinois Owner – Operator Villa Grand Piton

Re: [Elecraft] [POSSIBLE SPAM] Cleaning Solder Flux, Redux

Professionals use 91% Isopropanol. You can get it at CVS cheap. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ VP2EHZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of eda...@aya.yale.edu Sent: Friday, December 31, 2021 2:53 PM

Re: [Elecraft] I'm Thrilled with my new K4

lol He didn’t promise a technical paper, just relating his pleasure with the rig. Happy New Year 73/Gary W2CS > On Dec 28, 2021, at 11:05, David Gilbert wrote: > > > "This is the best rig I've ever used" > > That's a bit vague. Which other rigs are you comparing it to, and what >

[Elecraft] Elecraft Baseball Cap Not Great

I have gotten three of these. The first one fits and feels great…made in Bangladesh. The second one, too small…not enough crown and easily blows off my head in a mild breeze…made in China. The third one I bought hoping that the second one was an anomaly…but still shallow crown…made in China.

Re: [Elecraft] [POSSIBLE SPAM] Re: [POSSIBLE SPAM] Re: Need K3 Board

to replace the TUSB2036 and the USBLC6-2 ESD protection packs. Your mileage may vary... lightning of course. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email:  b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Ken K6MR

Re: [Elecraft] [POSSIBLE SPAM] Re: [POSSIBLE SPAM] Re: Need K3 Board

... and know the symptoms and fixes. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of David Gilbert Sent: Saturday, November 27, 2021 11:16 AM To: elecraft

Re: [Elecraft] Need K3 Board

It's definitely a multi-layer board, but the thing is so easily repaired, this is not necessary. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of jerry Sent

Re: [Elecraft] [POSSIBLE SPAM] Re: Need K3 Board

KIO3B boards, please sell them to those of us that can repair them and keep them in stock for future needs. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf

[Elecraft] Fwd: Need K3 Board

stock for the rest. > > > Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ > > email: b...@wjschmidt.com > > >>> On Nov 26, 2021, at 7:33 PM, David Gilbert wrote: >>> >>  >> Both of those reasons are bogus in my opinion.

Re: [Elecraft] K2 advice needed - what to buy

Good morning. I'd like to buy & make a K2 kit but would appreciate advice on what features to buy. I'm a simple chap based in the UK. And after 50 years I now Only use CW on 40m with a straight key, and I don't bother with contests as the morse is all autokeyers, keyboards, decoders, &

Re: [Elecraft] [POSSIBLE SPAM] sticky thermal pads for K3 LPA Mosfets

Virtually anything will work. It doesn't even have to be "sticky". Just use some heat transfer compound to stick a regular mica square to the chassis. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ -Original Message- From: ele

[Elecraft] Plug on KPA-1500

I don't see a picture of your plug. Looking into the 6-20P 240 vac/ 20 amp plug with the ground pin up, it should have a vertical blade on the left and a horizontal blade on the right. Is that what your amp came with? The 120 vac/20 amp plug, NEMA 5-20P, has the blades reversed...horizontal

Re: [Elecraft] KPA500 270V Failure

YEP Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Moderator – North American QRO Group at Groups.IO. email: <mailto:b...@wjschmidt.com> b...@wjschmidt.com From: Bruce Forsberg Sent: Saturday, July 24, 2021 11:10 PM To: b...@wjschmidt.

Re: [Elecraft] KPA500 270V Failure

Here it is. From Elecraft technical support: Nominally: TP2= RX 13.1 TX 0.8 TP4= RX 3.9 TX 13 >From Rene Morris at Elecraft (great guy!). Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Moderator – North American QRO Group at Groups.IO. email:

Re: [Elecraft] KPA500 270V Failure

the board under with the diodes and you need to check the voltages on those test points. That will tell you everything you need to know. Will post the voltages when I find them. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Moderator – North American QRO Group at

Re: [Elecraft] denatured alcohol vs. Everclear

are methanol, gasoline, natural gasoline (pentane range hydrocarbons), etc. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email:  b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Steve Hall Sent: Saturday, July 17, 2021

Re: [Elecraft] 99.9 % alcohol

of sieves to absorb water. Dr. William J. Schmidt (one of my Ph.D. is in Chemical Engineering) -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of John Marvin Sent: Wednesday, July 14, 2021 7:00 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] 99.9 % alcohol

Re: [Elecraft] Elecraft Digest, Vol 207, Issue 6

YAW! I didn't read more about this subject, but 10 seconds of keeping your finger on 100 degC. Try it if you like having blisters! elecraft-requ...@mailman.qth.net kirjoitti 5.7.2021 klo 20.54: Send Elecraft mailing list submissions to elecraft@mailman.qth.net To subscribe or

Re: [Elecraft] The next generation KAT500

olution. It’s a DUH if you think about it. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Al Lorona Sent: Thursday, July 1, 2021 12:09 PM To: Elecraf

Re: [Elecraft] Giving Up

over $1,000. That's what's up here... As Rob says in all of his talks... "Any of the radios in the top 10+ are about the same in performance... you serve yourself best buying one with the options that suit you". Unless, of course, you are a performance number chaser... Dr. William

Re: [Elecraft] KPA500 receive loss

here... Someone with more experience with them can chime in here. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email: b...@wjschmidt.com -Original Message- From: CUTTER DAVID Sent: Saturday, June 5, 2021 10:46 AM To: b...@wjschmidt.com; Elecraft Mail

Re: [Elecraft] KPA500 receive loss

transmits fine. A simple replacement of the four diodes and three (?) transistors solved the problem. Dirt cheap. You can make these measurements at the test-points to confirm: TP2= RX 13.1, TX 0.8 TP4= RX 3.9, TX 13 Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ

Re: [Elecraft] K4 Manual Link Broken?

one (831) 763-4211  > Mobile (831) 601-6983  > Email br...@elecraft.com  <mailto:br...@elecraft.com> > Website www.elecraft.com  <http://www.elecraft.com/> > > On Thu, May 27, 2021 at 12:13 PM Gary J Ferdinand <mailto:g...@w2cs.org>> wrote: >

[Elecraft] K4 Manual Link Broken?

I’m trying to access the “K4 Operating Manual” on the K4 support page on the Elecraft. I get a page not found. Is there an alternate link? Tnx. Gary W2CS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft

Re: [Elecraft] k3 STEPPIR 6Meters

on the same length using only the original driven element as being adjustable. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Joe Subich, W4TV Sent: Sunday, May 2, 2021 7:42 AM

Re: [Elecraft] Dummy Load with integral digital wattmeter

j jr Cc: elecraft@mailman.qth.net Subject: Re: [Elecraft] Dummy Load with integral digital wattmeter Have you looked at the Elecraft W2? https://elecraft.com/products/w2<https://urldefense.com/v3/__https://elecraft.com/products/w2__;!!DZ3

Re: [Elecraft] FW: Elecraft K3/P3 last-time order

Yes. And the salient part of this is that I missed the email about taking deposits… When did it go out? Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Moderator – North American QRO Group at Groups.IO. email: <mailto:b...@wjschmidt.com

[Elecraft] FW: Elecraft K3/P3 last-time order

I must have missed that email...?? and I wondered when they would start taking orders for the upgrades. Anyway take note if you still want K3/K3s parts before they are gone! Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ Moderator – North American QRO Group

Re: [Elecraft] MC-60A

I have been running a MC-60A on my K3s great results. Just recently switched to a Heil PR-781 on a boom On Fri., Apr. 2, 2021, 2:39 p.m. Steve Fox, wrote: > Do I need to make any modifications to use an MC-60A microphone with a K3? > > Thanks > Steve > KA4FOX >

Re: [Elecraft] Where are the K4 reviews?

You might try the "K4-Elecraft" group... -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of W0MU Mike Fatchett Sent: Tuesday, March 30, 2021 3:33 PM To: elecraft@mailman.qth.net Subject: Re: [Elecraft] Where are the K4 reviews? It is puzzling to see the lack of

Re: [Elecraft] March/April NCJ

he problem causing the box to fail). Evidently this has become common-place. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email: b...@wjschmidt.com -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Wes Sent: Saturday, March 13, 202

Re: [Elecraft] Suggested Enhancement for KPA-1500

I use my KPA1500 for contesting... and it's never hot... but I do worry about the fans wearing out. At one point I asked Elecraft if they had a "Fan Kit" for it that I could keep in stock here in the Caribbean just in case one went south in the middle of a contest... Dr. William

[Elecraft] K2 REVISED LCD and BACKLIGHT ASSEMBLY

I see there is a new backlight for the K2. I wonder why, and is this better than the original back in 2000. How difficult iis it to replace in a finished K2? Chuck Hawley c-haw...@illinois.edu Amateur Radio, KE9UW __ Elecraft

Re: [Elecraft] TX Gain Calibration Fails on 6 meters

Hello, K3S. S/N 11532 K3 Utility running on Mac OS 10.14.6 Mojave I found that running Transmitter Gain utility requires these settings within K3S Config menu to enable test to pass (with good 50 Ohm load on both ANT1 and XVTR-Out ports): Transmitter Gain tests: 5W test. requires Config -

[Elecraft] K2 upgrade notes not found on Elecraft site...

I’m not finding the several firmware upgrade notes. I see where you can buy the new firmware chip, but not finding why you would want to. I have noticed that the Elecraft site somehow has info, but sometimes it is difficult to find it...or it’s no longer there. Don’t like to see the latter.

[Elecraft] FW: Sudden KpA1500 power reduction

nothing secret... just not publically posted. Big shout out to Rene at Elecraft... Excellent tech. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Ken K6MR Sent: Sunday, February 21, 2021

[Elecraft] My THIRD Elecraft Hat

I just received my third Elecraft hat. It fits perfectly...just like my first Elecraft hat. When I got the second hat, it didn’t seem to fit properly. Kind of seemed short of coming all the way down on my head. I compared it to the first hat and it seemed the same, but just didn’t fit right.

Re: [Elecraft] Can I rent a K4?

by their version of the FCC rules. Dr. William J. Schmidt - K9HZ J68HZ 8P6HK ZF2HZ PJ4/K9HZ VP5/K9HZ PJ2/K9HZ email: <mailto:b...@wjschmidt.com> b...@wjschmidt.com -- This email has been checked for viruses by AVG. https://www.a

Re: [Elecraft] K4 specs

Ahh... Chuck Hawley c-haw...@illinois.edu Amateur Radio, KE9UW aka Jack, BMW Motorcycles From: Grant Youngman Sent: Monday, January 18, 2021 8:29 AM To: hawley, charles j jr Cc: Elecraft Refl Subject: Re: [Elecraft] K4 specs Wayne said they’d get

Re: [Elecraft] Genius vs. Stupidity

YAW! Equipments (Goes for Rx:es & TX:es) Has to be so simplified that they still work, but not simplier. Happy rest of the year 21. 73 Penna, OH2G elecraft-requ...@mailman.qth.net kirjoitti 26.12.2020 klo 19.06: Send Elecraft mailing list submissions to elecraft@mailman.qth.net To

[Elecraft] K Pod switch replacement or fix?

I’ve been wondering as I contemplate replacing at least two of the push button switches, if there is a more permanent fix. The schematic is available on the Elecraft website. What do you think of installing say a 10K pull-up resistor from the 3 vdc buss to each of the switch outputs. I wonder if

[Elecraft] Keyboard plugged into the P3 SVGA works but...

I asked the question how do you type live and send CW, and got the answer about the Menu set to VOX. That works now but it doesn't work in SSB to automatically offset and send out CW like with paddles plugged into the K3. Is this not possible with the keyboard and SVGA? Chuck Hawley

[Elecraft] KEYBOARD Plugged into P3 SVGA...can't type out live.

I can type into the transmit buffer and with ctrl T, transmit the CW. But with the VOX turned on in the K3s, the typing doesn't go out as I type, but fills up the buffer. I still have to hit ctrl T to transmit. Am I missing something that needs to be turned on or off? Chuck Hawley

[Elecraft] P3 Transmit Display Failure

I have a reoccurring issue with the P3 display of the transmit cw display. Occasionally, the P3 doesn't display the TX waveform ( I have never noticed if this happening on SSB...probably not since I have never had to fix it). The fix is loading a config file stored when the problem was not

[Elecraft] Flashover in linear amp fed w. K3

Hello Elecrafters! Happened one day when tested Drake L4, that there was a loud bang in the linear causing electrical shutdown in both, the linear and the K3. Now seems that the K3 refuses of any output, RX normal. Hopefully the cause is only corrupted firmware, still having a fear for damaged

Re: [Elecraft] K-POD Button Switches Intermittently triggering the wrong macro

buttons don't. >> A real pain in cw pileups. >> >> Steve, K6UM >> >>> On Fri, Nov 6, 2020 at 3:55 PM hawley, charles j jr >>> wrote: >>> >>> I posted this on Elecraft .io but will try here as well... >>> >>> I love th

[Elecraft] K-POD Button Switches Intermittently triggering the wrong macro

I posted this on Elecraft .io but will try here as well... I love this K-Pod, BUT I’ve sort of worn out 3 of them. The symptom is that the most used buttons get noisy and trigger another macro from another address. When I had the first one do that, I did extensive testing to eliminate rf

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