Re: [Elecraft] K3 - KEY OUT problem

Bob N7WY motivated me to provide a few more details on the KEY OUT mosfet/Q3/IRFI630 replacement. I took the bottom off my K3 to show the location of the IRFI630 on the bottom of the PCB. It was a little more tricky than I remembered, so you will need to access the main PCB from the top of the

Re: [Elecraft] K3 - KEY OUT problem

- Original Message - From: donov...@starpower.net To: elecraft@mailman.qth.net Sent: Saturday, December 28, 2019 4:43:05 PM Subject: Re: [Elecraft] K3 - KEY OUT problem Hi Pete, Perhaps more important: how did this unusual failure occur? Unless you can figure this out with a reasonable

Re: [Elecraft] K3 - KEY OUT problem

: "N4ZR" To: "Elecraft List" Sent: Saturday, December 28, 2019 3:57:01 PM Subject: [Elecraft] K3 - KEY OUT problem Thanks to everyone who responded. I've now written to Elecraft Support, and anticipate that it will have to go back to the mother ship. -- 73, Pete N4ZR C

[Elecraft] K3 - KEY OUT problem

Thanks to everyone who responded.  I've now written to Elecraft Support, and anticipate that it will have to go back to the mother ship. -- 73, Pete N4ZR Check out the Reverse Beacon Network at , now spotting RTTY activity worldwide. For spots, please use your

Re: [Elecraft] K3 Key Out Jack Not Working

Pete, Check the Keyout jack with your ohmmeter. One lead to the center conductor and the other to the shell. During receive, it should read infinite resistance, and when you go to transmit, the resistance should go to near zero. Do you have anything else connected to the KEYOUT jack (an

[Elecraft] K3 Key Out Jack Not Working

I'm trying to set things up so that I can disconnect my 160M transmit antenna whenever I'm receiving, to prevent noise coupling into my RX antenna.  My thought is to use the Key Out jack on the K3 to control DC to a relay at the base of the antenna,  floating the base of the inverted L unless

Re: [Elecraft] K3 KEY OUT, hi or low on TX?

Jamie, It will short the active wire to ground. The KeyOut does not source any voltage, it is like a switch, it is either open or closed. Any voltage is sourced by the amplifier or other external device. It will only work with a positive voltage. The voltage and current listed in the

Re: [Elecraft] K3 KEY OUT, hi or low on TX?

uot;grounding") up to 200 volts at up to 5 amps continuous from the load connected to KEY OUT. 73 Frank W3LPL - Original Message - From: "Jamie WW3S" To: elecraft@mailman.qth.net Sent: Friday, January 4, 2019 8:45:22 PM Subject: [Elecraft] K3 KEY OUT, hi or

[Elecraft] K3 KEY OUT, hi or low on TX?

Does the KEY OUT jack go HI or LO during transmit? __ 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:

Re: [Elecraft] k3 key out jack

Shel, Keyout is on RF Board sheet 1. Is your problem only from the internal keyer? In other words, does it work when you use a hand key or computer keying? If also a problem from a hand key or computer keying, then what is the DC voltage at the gate of Q3 during keydown - should be almost

[Elecraft] k3 key out jack

Sent from Mail for Windows 10 My K3 does not pull the key out line to ground when pulsed by the internal keyer, I need some help in tracing the circuit on a schematic. Shel Sherman WO0C __ Elecraft mailing list Home:

Re: [Elecraft] (k3) Key out redux

Pete, Connect one side of the relay coil to your +12 volt supply, and connect the other side to the KEYOUT jack. Put a diode with the cathode connected to the +12 volt side across the relay coil. The negative of your power supply has to connect to the shell of the KEYOUT connector. The

Re: [Elecraft] (k3) Key out redux

Here's a link to the basic discussion . See the wiring diagram about half way through the article. Cheers, David -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft

[Elecraft] (k3) Key out redux

Thanks, everyone who responded to my earlier query - I now understand that the circuit in the K3 is equivalent to the old bipolar transistor switches we used to use for serial port CW/PTT keying. So here's my problem - I have a small 12V DPDT relay that I want to use to switch the power to my

Re: [Elecraft] K3 Key Out Problem

Gerry, What are you using to measure the KEYOUT line? In CW, it will follow the QSK keying. so it will be a series of fast pulses. If you are trying to measure with an ohmmeter (or voltmeter), it may not respond fast enough to see it on the meter. The fact that it works when you key the

[Elecraft] K3 Key Out Problem

I have had my K3 for a couple years now. Had a Flex 5000 prior. Love the K3 but discovered a problem. I recently got a receiving loop antenna an connected the keyoutput from the K3 to shut the power off to the loop when transmitting. On SSB in works fine when the mic is keyed. When operating

Re: [Elecraft] K3 Key out timing?

Actually since I'm using the KPA500 then need relationship would between KPA500 and the K3 Keyout. Thanks Jim ab3cv On Sun, Dec 20, 2015 at 9:24 PM, Jim Miller wrote: > I know that K3 Key out to RF delay is adjustable up to 20mS on initiation. > > What is the tail end

[Elecraft] K3 Key out timing?

I know that K3 Key out to RF delay is adjustable up to 20mS on initiation. What is the tail end timing relationship between Key out and RF emission? 73 jim ab3cv __ Elecraft mailing list Home:

[Elecraft] K3 Key Out Issue

Hi all, Am hoping someone can help me with a problem. I have a K3 with a KD9SV rx antenna switch and use the Key Out line to toggle this device. For some reason, the K3 will not send the key Out low in CW mode via: - external software (Logger32, N1MM) - the macro buttons - a paddle plugged

[Elecraft] K3 Key Out

Hi all: Is the K3 key out (for keying amps) suppose the work in tune..?? W4CCS __ 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] K3 Key Out

Yes. Wayne N6KR On Jun 18, 2011, at 9:53 AM, W4CCS wrote: Hi all: Is the K3 key out (for keying amps) suppose the work in tune..?? W4CCS __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

[Elecraft] K3 Key Out Inoperative in CW Tune Modes

All: All of a sudden, my K3 has stopped activating the Key Out while in CW or XMIT / Tune mode. The Key Out does work when closing the PTT input on the Mic Jack. I received the suggestion to re-init the radio last night. I'm not ready to do that, as I was cautioned that saving a recent

Re: [Elecraft] K3 Key Out Inoperative in CW Tune Modes

Dennis, Save the configuration and do the EEINIT, then restore the configuration. At most you might have to enter one menu parameter manually - but only if it is wrong in your K3 right now. If all your menu items are correct now, they will restore correctly. Having to manually change one

[Elecraft] K3 key-out jack - configuration needed?

Hi guys, preparing for the autumn contest season I thought to do some cable work today. Made up a cable to key the amplifier and wanted to use the key-out jack therefor (only need to sink 13,8 V / 60 mA so should work perfectly well). But the amp isn't keying. So I measured the RCA jack and

Re: [Elecraft] K3 key-out jack - configuration needed?

Olli, The Key Out and the ACC connector Keyout-LP are developed from the same internal signal, but the driving transistors are different for each. The Key Out jack is driven by Q5 and Q3 on the RF Board, and you will find your problem associated with one of those transistors. See the

Re: [Elecraft] K3 key-out jack - configuration needed?

, October 10, 2010 6:32 PM Subject: Re: [Elecraft] K3 key-out jack - configuration needed? Olli, The Key Out and the ACC connector Keyout-LP are developed from the same internal signal, but the driving transistors are different for each. The Key Out jack is driven by Q5 and Q3 on the RF Board

Re: [Elecraft] K3 key-out jack - configuration needed?

and their email reflector. ;-)) 73, Olli - DH8BQA - Original Message - From: JAMES ROGERS w4...@bellsouth.net To: Oliver Olli Dröse dro...@necg.de Sent: Sunday, October 10, 2010 6:29 PM Subject: Re: [Elecraft] K3 key-out jack - configuration needed? Oliver, it is a MOSFET, IRF630 and you may

Re: [Elecraft] K3 key-out jack - configuration needed?

...@necg.de Cc: elecraft@mailman.qth.net Sent: Sunday, October 10, 2010 6:32 PM Subject: Re: [Elecraft] K3 key-out jack - configuration needed?  Olli, The Key Out and the ACC connector Keyout-LP are developed from the same internal signal, but the driving transistors are different for each

[Elecraft] K3 Key Out line

I noticed from the documentation that the K3 Key out line can handle up to 200 VDC and 5 amps. I assume this means that when the key out is closed that it can handle 5 amps of current. So, I am curious, what kind of switch mechanism is used for TR switching. Is this an actual relay or is it

Re: [Elecraft] K3 Key Out line

Hi Phil, Key out is driven by a very rugged N-channel MOSFET. 73, Wayne N6KR On Dec 23, 2009, at 9:01 AM, Phil Hystad wrote: I noticed from the documentation that the K3 Key out line can handle up to 200 VDC and 5 amps. I assume this means that when the key out is closed that it can

Re: [Elecraft] K3 Key Out line

Phil, There is no direct relationship between the KEYOUT line and the T/R switch in the K3. The T/R switch is fully electronic, no relays to clack and clatter. The KEYOUT line goes to ground before the onset of RF - and the delay can be adjusted in the menu. It is normally used for keying

Re: [Elecraft] K3 Key Out line

Phil, You can see the T-R switching circuitry in the schematics available on the Elecraft web site. Just search for t-r and you'll find the circuitry for both the 10W and 100W PAs. -- 73 -- Brian -- K1LI On Wed, Dec 23, 2009 at 12:01 PM, Phil Hystad k7...@comcast.net wrote: I noticed from

[Elecraft] K3 - Key Out Question

Good evening. I'm attempting to use my K3 with a Tokyo High Power HL-1.2Kfx amp. On the amp, when STBY (which has 12v on it) is grounded, the relay clicks, and the On Air led lightsjust like it should. However, when a cable is connected between the K3's Key Out jack, and the STBY on the

Re: [Elecraft] K3 - Key Out Question

On Sun, Dec 20, 2009 at 5:55 PM, Jack Nelson jack.nel...@mindspring.com wrote: Good evening. I'm attempting to use my K3 with a Tokyo High Power HL-1.2Kfx amp. On the amp, when STBY (which has 12v on it) is grounded, the relay clicks, and the On Air led lightsjust like it should. However,

Re: [Elecraft] K3 - Key Out Question

Jack, Unless you have a problem with the K3, the KEYOUT jack should have no voltage on it either during TX or RX. Check the KEYOUT with an ohmmeter. It should have a high resistance during receive - then put the K3 into TEST (hold the MODE up button), then press TUNE - the resistance should

Re: [Elecraft] [K3] Key out (was CW sideband)

ps: the first thing that drives me crazy about the K3? The fact that the radio (and the amp) key when I'm playing with my paddles and just wanna hear my own CW. Me too. I guess it must be done this way for people who send the key first to their amp or antenna switch, and then get their PTT

Re: [Elecraft] [K3] Key out (was CW sideband)

If you don't want power output when you hit the key, turn off the VOX while in CW mode - the rig responds with PTT in the message area. To get power out with VOX off, you must press the XMIT button or active the PTT (with a footswitch, for example) while keying the paddles. Depending on what you

Re: [Elecraft] [K3] Key out (was CW sideband)

That isn't the problem. Even if you have VOX off, hitting the paddles activates the T/R relay line to the amplifier. It does so even if you put the K3 into TEST mode. There's no power output, but the amp relay (and anything else that may be activated by PTT) engages. 73, Dave AB7E

Re: [Elecraft] [K3] Key out (was CW sideband)

@mailman.qth.net Subject: Re: [Elecraft] [K3] Key out (was CW sideband) ps: the first thing that drives me crazy about the K3? The fact that the radio (and the amp) key when I'm playing with my paddles and just wanna hear my own CW. Me too. I guess it must be done this way

Re: [Elecraft] [K3] Key out (was CW sideband)

Joe Subich, W4TV wrote: That's right - it does. Again, the signal is Key Out not Amplifier PTT. Key out should ALWAYS follow the straight key (or internal keyer) input regardless of whether the K3 is producing power. Actually, it follows the logical OR of XMIT button and key.

Re: [Elecraft] K3 Key out

Hi Phil, If the 30L-1 keying input, with its very high negative voltage, was ever hooked directly to the K3's keying output, there is a very good chance you may have destroyed the K3s output keying device. Eric WA6HHQ Phil LaMarche wrote: I've had many wonderful emails with suggestions

[Elecraft] K3 Key out

I've had many wonderful emails with suggestions and I thank you. Let me be more specific: The Amp Keyer works OK. The 30L-1 keys OK. The tested cable coming out of the Key Out on the back of the K3 isn't working properly. It's in the closed position. If I take the other end of the cable

Re: [Elecraft] K3 Key out

Phil, I had the same issue when I hooked up an SB200. Because the keying voltage in the amp is negative, you can't connect to the K3 directly. I put in an intermediate relay, which works OK. I might install the Harbach soft-key mod at some point... Have you put a continuity tester across KEY

Re: [Elecraft] K3 Key out

...@mailman.qth.net] On Behalf Of Iain MacDonnell - N6ML Sent: Sunday, February 08, 2009 4:09 PM To: Phil LaMarche Cc: elecraft@mailman.qth.net; den...@lutronx.com Subject: Re: [Elecraft] K3 Key out Phil, I had the same issue when I hooked up an SB200. Because the keying voltage in the amp

Re: [Elecraft] K3 Key out

Phil, What is the possibility that you damaged the K3 KEYOUT by connecting the negative voltage to it? Check with an ohmmeter connected across the KEYOUT jack on the K3 - put the K3 in TX TEST just to be safe. If it reads close to zero ohms with no respect for keyup or keydown (or PTT or

[Elecraft] [K3] KEY OUT

I have a problem but can't determine if it's between the ears or in the radio. I can not get KEY OUT to key my amp when using VOX. It keys only when PTT or XMIT is pushed. The amp is new to me, an ALS-600. I have searched the archives and believe this should work. Help please. Monty

Re: [Elecraft] [K3] KEY OUT

that far, but at least we can compare notes when I do. Willis 'Cookie' Cooke K5EWJ --- On Sun, 12/7/08, Monty Shultes [EMAIL PROTECTED] wrote: From: Monty Shultes [EMAIL PROTECTED] Subject: [Elecraft] [K3] KEY OUT To: elecraft@mailman.qth.net Date: Sunday, December 7, 2008, 7:41 AM I have

[Elecraft] K3 Key Out

Hank The K3 Key out may be rated for 200 volts but if you use it with an unmodified SB220 you are taking a real chance of damaging the K3 because there is no protection diode in the SB220 and the field collapse voltage can exceed 1000 volts. the SB220 was originally designed for relay

[Elecraft] K3 Key Out

I soldered up the soft key mod today, it's inexpensive and simple to install. http://www.harbachelectronics.com/_mgxftp/pdffiles/SK220PICTORIAL.PDF [Elecraft] K3 Key Out David Robertson darjar at comcast.net Mon Sep 1 17:40:33 EDT 2008 The K3 Key out may be rated for 200 volts but if you use

Re: [Elecraft] K3 Key Out

The MOSFET used in the K3 is internally diode protected. 73, Tom N0SS At 16:40 09/01/2008, David Robertson wrote: Hank The K3 Key out may be rated for 200 volts but if you use it with an unmodified SB220 you are taking a real chance of damaging the K3 because there is no protection diode

RE: [Elecraft] K3 Key Out

of a gain by using the external device . 73 --- Dave, W9ZRX -Original Message- From: [EMAIL PROTECTED] [mailto:elecraft- [EMAIL PROTECTED] On Behalf Of Don Rasmussen Sent: Monday, 01 September, 2008 18:20 To: elecraft@mailman.qth.net Subject: [Elecraft] K3 Key Out I soldered

[Elecraft] K3 Key Out

with an ON Resistance of .4 Ohm in a TO-220 Package. Don't see much of a gain by using the external device. [Elecraft] K3 Key Out Dave Zeph zephd at indy.rr.com Mon Sep 1 18:49:09 EDT 2008 Previous message: [Elecraft] K3 Key Out Next message: [Elecraft] [K3] 3rd order distortion Messages sorted

[Elecraft] K3 Key Out

The K3's Key Out is rated for +200V at 5 Amps. Inside the K3, is Key Out a relay or solid state? 73, Hank, W6SX Mammoth Lakes, California Elevation 8083 feet in John Muir's Range of Light ___ Elecraft mailing list Post to:

Re: [Elecraft] K3 Key Out

W6SX Hank Garretson wrote: The K3's Key Out is rated for +200V at 5 Amps. Inside the K3, is Key Out a relay or solid state? It's an IRFI630 MOSFET. -- 73, Vic, K2VCO Fresno CA http://www.qsl.net/k2vco ___ Elecraft mailing list Post to:

Re: [Elecraft] K3 Key Out

Solid state. 73, Eric WA6HHQ _..._ -Original Message- From: W6SX Hank Garretson [EMAIL PROTECTED] Date: Sunday, Aug 31, 2008 8:52 am Subject: [Elecraft] K3 Key Out To: elecraft@mailman.qth.net The K3's Key Out is rated for +200V at 5 Amps. Inside the K3, is Key Out a relay or solid

[Elecraft] K3 - KEY OUT missing

Anybody with these symptoms: With mike PTT (hard ground) I can easily command the amplifier through K3. But with straight key or inbuilt keyer the KEY OUT is not grounding. K3 itself sends OK. Unfortunately I have not found schematic of back panel and the power FET used in keying. It also crossed