Re: [Elecraft] K4 Key Out spec

Though not in the K4 manuals, the K4 KEY OUT jack (an RCA phono connector) has the same specs as the K3 KEY OUT jack: capable of keying up to +200VDC @ 5A. The K4 uses the same MOSFET as the K3, an IRFI630 (see datasheet ). Note that the

Re: [Elecraft] A or B?

"... Iambic (of whatever alphabetical variety) is pretty atrocious..." https://www.morsex.com/pubs/iambicmyth.pdf Ted W4NZ -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Chuck Chandler Sent: Wednesday, July 7, 2021 3:57

Re: [Elecraft] SDR filter improvement

You can download each chapter, look on the left side of the page, just above the Adobe Reader icon. Carl AB1DD On 7/7/2021 8:34 PM, Bill Coleman wrote: If you want to understand DSP, the math underlying it and a lot of the capabilities and limitations, I recommend this book:

Re: [Elecraft] SDR filter improvement

If you want to understand DSP, the math underlying it and a lot of the capabilities and limitations, I recommend this book: http://www.dspguide.com/pdfbook.htm It is freely available from that link. You’ll have to read it on-line. I did, and found it to be the most readable explanation of DSP I

Re: [Elecraft] A or B?

Here here  “whiskey two rusty fist” -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Wayne Burdick Sent: Wednesday, July 7, 2021 3:17 PM To: Dan Presley Cc: Elecraft Reflector Subject: Re: [Elecraft] A or B? This has been a great discussion,

Re: [Elecraft] A or B?

I recommend choosing B, and use the iambic operation for every possible character (anything that alternates). Your friend will need to practice (a lot) before going on the air. It takes some getting used to. I can’t imagine using anything else. > On Jul 6, 2021, at 10:34 AM, Gary Peterson

Re: [Elecraft] A or B?

I'd like to see bug mode as an option... for those of us who still use a bug, I find I can send pretty well with a keyer in bug mode. Iambic (of whatever alphabetical variety) is pretty atrocious. 73 de Chuck, WS1L chandler...@gmail.com On Wed, Jul 7, 2021 at 3:18 PM Wayne Burdick wrote: >

Re: [Elecraft] Broke my K2 :(

Remember PTTL? Poorly Tinned Toroid Leads. Look for them. 73, Victor, 4X6GP Rehovot, Israel CWops #5 Formerly K2VCO https://www.qsl.net/k2vco/ On 07/07/2021 22:19, jerry wrote: So I went out this morning to replace the CW filters with the upgrade kit. Unsoldered the 5 crystals. Removed one of

[Elecraft] Broke my K2 :(

So I went out this morning to replace the CW filters with the upgrade kit. Unsoldered the 5 crystals. Removed one of them - whups, it's got the "S"! That means that the upgraded crystals are already installed. I thought there was no "S" - it was hard to read with them installed. So I

Re: [Elecraft] A or B?

This has been a great discussion, with many perspectives. Just to reiterate, all Elecraft radios going back to the K2 provide both modes, and the default is (and always shall be) mode A. 73, Wayne N6KR > On Jul 7, 2021, at 12:10 PM, Dan Presley wrote: > > I’d like to bend the conversation a

Re: [Elecraft] A or B?

I’d like to bend the conversation a bit to general CW sending regardless of which mode or key you use. I don’t think we’ll ever settle the arguments about A vs B,except B is more ubiquitous and most students start on B. But what really matters is the quality of the code you send. And it doesn’t

[Elecraft] A or B ?

The most important thing is to choose either A or B and stay with that. It is very difficult to change, I know ! Decades ago I chose B since some rigs did not have the A choice. Many folks who use B do not squeeze many characters, and any potential advantage of the B mode is small (if it

Re: [Elecraft] KPA1500 parameters

Hi Dave,Yeah, sounds like it. Waiting for feedback from Elecraft support.At least I have the KPA500 as backup.N2TK, Tony -Original Message- From: Dave To: tony@verizon.net Cc: k...@charter.net; elecraft@mailman.qth.net Sent: Wed, Jul 7, 2021 8:55 am Subject: Re: [Elecraft] KPA1500

Re: [Elecraft] KPA1500 parameters

Hi Tony, Sounds like you might have lost one of the LDMOS devices. 73 Dave wo2x Sent from my waxed string and tin cans. > On Jul 7, 2021, at 7:16 AM, N2TK via Elecraft > wrote: > > Thanks Larry.Just wanted to confirm what I was seeing wasn't normal.All of a > sudden with 25W drive I get

Re: [Elecraft] KPA1500 parameters

Thanks Larry.Just wanted to confirm what I was seeing wasn't normal.All of a sudden with 25W drive I get Pwr - 530WCurrent - 29AVoltage - 53V with no drive or 25W drive. N2TK, Tony -Original Message- From: Larry (K8UT) To: tony@verizon.net; elecraft@mailman.qth.net Sent: Wed, Jul

Re: [Elecraft] A or B?

To me the essential difference between A and B keyers is explained by WB9KZY here: The difference between mode A and B lies in what the keyer does when both paddles are released. The mode A keyer completes the element being sent when the paddles are released. The mode B keyer sends an

Re: [Elecraft] A or B?

Explained nicely here: http://wb9kzy.com/modeab.pdf On 07/07/2021 10:41, Jim Brown wrote: From a guy who started in about '56 with a bug and migrated cold-turkey to an electronic keyer in the mid-60s, and an electronic keyer in the mid-'70s to one that would do serial numbers for contests,

Re: [Elecraft] A or B?

From a guy who started in about '56 with a bug and migrated cold-turkey to an electronic keyer in the mid-60s, and an electronic keyer in the mid-'70s to one that would do serial numbers for contests, WTF are modes A and B? 73, Jim K9YC On 7/6/2021 7:58 AM, Wayne Burdick wrote: I’ve always

Re: [Elecraft] K4 Experience

On 7/6/2021 6:52 AM, steve WB3LGC wrote: I'll ask a similar question... What does this have to do with K4 Experience? 73, Jim K9YC __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] KPA1500 parameters

25 in, 1322 out, 43% efficiency, 51.7 volts @ 59 amps with 1.5:1 SWR. (see screenshot) -larry (K8UT) -- Original Message -- From: "N2TK via Elecraft" To: "elecraft@mailman.qth.net" Sent: 2021-07-06 23:48:27 Subject: [Elecraft] KPA1500 parameters What do you typically see for Power

Re: [Elecraft] A or B?

99% of non Elecraft radio have Iambic B keyer only, so I suggest to learn Iambic B. I learned Iambic A in the eighties and now I have to use a single lever key with radios that have Iambic B only, otherwise I send C instead of K... 73 de Guido, ik2bcp / k2bcp Il giorno mer 7 lug 2021 alle ore