Re: [Elecraft] KX3 RX I/Q testing

The levels from the RX I/Q are very low, so you might not hear anything. Pages 26 and 27 in the manual talk about using that for computer-based SDR applications. Also, check the RX I/Q menu setting. If that is OFF, you won’t get any output from that jack. Finally, fldigi does not use I/Q signa

Re: [Elecraft] KX3 RX I/Q testing

Thanks for the prompt reply, I guess the question that I would like to answer is, if I were to plug in to both sides of the RX I/Q port should I hear anything at all? If I shouldn't then great, if I should then I'm going to need to figure out what's going on with my radio such that I can't heard an

Re: [Elecraft] KX3 RX I/Q testing

Kevin, The I/Q output is an analog two channel audio signal, but one of the signals is 90 degrees delayed from the other, hence in quadrature. If you plug the output of the I/Q port, one channel at a time into your computer mic input, you will hear a wideband audio signal. There will not b

[Elecraft] KX3 RX I/Q testing

Does anyone know how to test the RX I/Q signal is coming out of the radio correctly. I used the elecraft cables trying to listen to the signal using my computer and didn't hear anything. I would like to be able to use this output in fldigi for the waterfall. And still be able to listen to CW signal

Re: [Elecraft] KPA1500 Utility and Firmware for Mac?

Hmmm . . . I think 18.6.27 is the old utility, from last summer. Elecraft's announcement said we have to use the new utility for the new F/W. The site lists a January 3 2019 utility for Windows but only the 6.27.18 for Mac. That utility reported that I have the latest F/W, which I don't . .

Re: [Elecraft] KPA1500 Utility and Firmware for Mac?

Oops.. Make that v1.18.6.27 Sorry about that. David, W4SMT --- On Saturday, January 5, 2019, 9:10:26 PM EST, Dauer, Edward wrote: I just checked for the new Utility and F/W and could find nothing for Mac OS.  The utility is from last June, and it won’t load the new

Re: [Elecraft] KPA1500 Utility and Firmware for Mac?

Hi Ted, Just loaded 2.0 using the Mac Utility (v1.1.8.27). No problems at all. David, W4SMT --- On Saturday, January 5, 2019, 9:10:26 PM EST, Dauer, Edward wrote: I just checked for the new Utility and F/W and could find nothing for Mac OS.  The utility is from last Ju

[Elecraft] KPA1500 Utility and Firmware for Mac?

I just checked for the new Utility and F/W and could find nothing for Mac OS. The utility is from last June, and it won’t load the new F/W. Will there be a Mac version sometime soon, or am I missing something - again? Last Thursday the price of Apple shares dropped 8.8%. I thought it had to d

[Elecraft] Elecraft CW Net Announcement

Good Evening,     Hopefully I will be able to get on the air tomorrow.  The winds are starting to rise and the power keeps glitching every few minutes.  Mostly just brown out so  the clocks stay set.  The main power lines from Bonneville Dam are very exposed to this weather. A snow storm may

Re: [Elecraft] KPA1500 Required Update????

I got mine already loaded it, .all is good.. .. The amp still works great 28 watts of drive from my K3s and 1500 peak out of the KPA 1500 on 160 meters Bruce WW8II Virus-free. www.avg.

Re: [Elecraft] KPA1500 Required Update????

I got it and my amp won’t come until next week sometime 73, Pete N4ZR Sent from my iPhone > On Jan 5, 2019, at 7:47 PM, Walter J. Legowski wrote: > > I didn't get any notification either. And it's not in my spam box. > > Walt, WA1KKM > > >> On 1/5/19 11:29 PM, rocke...@gmail.com wrote: >

Re: [Elecraft] KPA1500 Required Update????

I didn't get any notification either. And it's not in my spam box. Walt, WA1KKM On 1/5/19 11:29 PM, rocke...@gmail.com wrote: It was sent to the email address I gave them when I ordered my amp. Check your spam filters. I forwarded the email to you. Dave wo2x -Original Message- Fro

Re: [Elecraft] K3 power amp 2SC2782

Hi Wes, Agreed. In my view FETs are a mistake at the 14V level. The old K3 bipolar PA is much better (but still not good). Knut - AB2TC Wes Stewart-2 wrote > I have not observed a low power issue in my K3.  OTOH, in my experience > the K3S > PA has been a huge disappointment.  One reason for

Re: [Elecraft] K3 power amp 2SC2782

I have not observed a low power issue in my K3.  OTOH, in my experience the K3S PA has been a huge disappointment.  One reason for buying a K3S was a hope that the TX IMD would be improved with FETs.  This would no doubt have been true if Elecraft designed the radio for 50 VDC. Wes  N7WS On 1

Re: [Elecraft] KPA1500 Required Update????

It was sent to the email address I gave them when I ordered my amp. Check your spam filters. I forwarded the email to you. Dave wo2x -Original Message- From: elecraft-boun...@mailman.qth.net On Behalf Of Alan Sewell N5NA Sent: Saturday, January 5, 2019 6:17 PM To: elecraft@mailman.qth

[Elecraft] KPA1500 Required Update????

Where was the email about the important/required KPA1500 update posted? The first I heard about it was Rich's KUDOS reflector post.  I've gone back through my reflector digests and emails and haven't found any announcement about the update. BTW, I just updated to version 2 with no problems.

Re: [Elecraft] K3 power amp 2SC2782

Hi again, One thought: What is your firmware version? I now remember that there was one version that had a problem delivering full power on 15m only. This has long been fixed. Make sure you have the latest. AB2TC - Knut ab2tc wrote > Hi, > > How are you measuring your actual output and in whic

Re: [Elecraft] KPA500 Hum

Prob. The front switch is a “soft switch”. Wakes up the amp from a nap. Sent from my iPhone ...nr4c. bill > On Jan 4, 2019, at 12:57 AM, John_N1JM wrote: > > I don't use my KPA500 a lot, but I just noticed with only the back switch on > I can hear a hum coming from the amp. It disappears of c

Re: [Elecraft] K3 power amp 2SC2782

Hi, How are you measuring your actual output and in which mode are you testing it? I have a K3S and a K3 souped up to near K3S but still with the original transmitter chain. I have no problem achieving 100W with either one of them into a factory calibrated LP100A, testing it in FM mode. Overall I

Re: [Elecraft] KPA500 PA transistor screws

Andy, No, the KPA500 is a different design than the KPA100. 73, Don W3FPR On 1/5/2019 5:02 PM, Andy Durbin wrote: From "KPA100 failure" topic - "Thirdly, were the PA transistors tight? If not, the PA transistors will heat the board around the transistors and not be thermally coupled to the

Re: [Elecraft] K3 power amp 2SC2782

I've always felt that the KPA3 in my K3 was marginal.  For example, I've never been able to get more than about 80 W out of it on 15 meters. (And that's at about 14.5 V) Is the KPA3A any better? 73, Scott K9MA On 1/5/2019 15:23, Robert Friess wrote: Hank, The 2SC2782 is not internally matche

[Elecraft] KPA500 PA transistor screws

>From "KPA100 failure" topic - "Thirdly, were the PA transistors tight? If not, the PA transistors will heat the board around the transistors and not be thermally coupled to the heatsink. Are the thermal pads properly in place? After initial assembly (and anytime afterwards if the thermal pa

Re: [Elecraft] K3 power amp 2SC2782

Hank, The 2SC2782 is not internally matched and is the only part ever used in the KPA3. The KPA3A uses MOSFETs. 73, Bob, N6CM On Sat, Jan 5, 2019 at 11:04 AM HP wrote: > Anyone know if the Toshiba 2SC2782 transistors used in the K3 power amp > have internal matching (mos cap and wirebonds ) ?

Re: [Elecraft] KPA100 failure

Paul, Sometimes it is just better to replace D16 and D17 than to trust them to an ohmmeter reading. They can be "half bad" - OK at DC, but not at RF.  They are 1N5711 diodes. If you have the latest updates, the oscillation is not a concern unless you have a T/R switch problem. If your therm

Re: [Elecraft] KPA100 failure

Don Thanks for the helpful pointers. Although I didn’t build the KPA100, I did have to fix a few items before it worked. It has got all the updates. I have checked D16 and D17 - they are OK. I’ll check for oscillations - should be easy to spot at 8MHz on an SDR The PA transistors do appear

Re: [Elecraft] KPA100 failure

Paul, I have three possible guesses. First is that the KPA100 was developing the full power output that it is capable of (often 180 watts) because the wattmeter diodes D16 and D17 have been damaged by static (wind, rain, snow, or nearby lightning). If those diodes are damaged the MCU thinks the

[Elecraft] KPA100 failure

I was using my KPA100/KAT100 combination today to check out some changes to my OCFD antenna. Previously I have had problems with the balun heating up and the SWR increasing over an extended transmit on 7MHz (eg 50w on an FT8 over). I have made an improvement to my OCFD antenna by adding anoth

[Elecraft] K3 power amp 2SC2782

Anyone know if the Toshiba 2SC2782 transistors used in the K3 power amp have internal matching (mos cap and wirebonds ) ? Or did the K3 power amp ever use Motorola MRF247 transistors ? Hank K7HP __ Elecraft mailing list Home: http:

Re: [Elecraft] Tech Support --- kpa1500 KUDOS

Charlie, Actually, they were swamped with support emails and phone calls yesterday - and have been since before Christmas. Running with only a skeleton staff over the holidays has extracted a toll for the backlog. But with the new and important firmware upgrade for the KPA1500, they were pa

Re: [Elecraft] Tech Support --- kpa1500 KUDOS

Everything "man-made" can have unforeseen problems no matter how much Beta testing is done. That said, your minus minute follow-up call reminds me of an old TV commercial about a frustrated Maytag repair guy who was bored because he didn't have enough to do. They were obviously touting the reli

[Elecraft] Tech Support --- kpa1500 KUDOS

Well, I saw the email Thursday night about the Important firmware update for the kpa1500 v2.0 So I applied it after updating the utility program first when I got home from work on Friday. Going well, till it failed and then hung. Yes - I freaked out, I know what bad things happen when firmware up

[Elecraft] KX3 - PF1 shortcut interrupting transmitting

Well this is a strange one. I set one of the Programmable Function switches PF1 to turn the illumination of the display on and off which works fine as a shortcut (I like to keep the display of the KX3 off most of the time in the shack and was delighted to find I can set PF1 or PF2 to easily do that