[Elecraft] Expert Amp and K3

Bill I run a similar setup portable and have played around with various ways to link the radio and amp. I also run an FTDX5000 as my main base station with the Expert Firstly make sure that you have ALC turned off on the K3 otherwise the amp will attempt to set the drive to achieve one of

Re: [Elecraft] K3 and Expert 1.3K-FA amplifier power

There is the story, probably apocryphal, of a famous rock star who said the secret to his success was that the volume knob on his amplifier went to 11 instead of just 10 like all the others. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 9/10/2017 8:09 PM, Jim Brown wrote: On

Re: [Elecraft] KX2/3 DSP AM Demodulation

Scott, The fact that it produces I and Q outputs from the quadrature mixer puts it in the class of SDR transceivers, which are a different breed than Direct Conversion. You are free to call it what you will, but the rest of the world refers to that as an SDR. The 8kHz shift allows the

Re: [Elecraft] K3 and Expert 1.3K-FA amplifier power

On 9/10/2017 2:10 PM, Bill Frantz wrote: I have just set up an Expert 1.3K-FA amplifier with my K3 (with most of the upgrades to become a K3S). My question is, when I drive it with 10W set on the K3 output power, it shows a drive level of about 30W and and output level of 950W. What is going

Re: [Elecraft] KX2/3 DSP AM Demodulation

Don, OK, I'll turn that around, and ask why the KX2 does NOT convert directly to baseband, rather than to 8 kHz?  You said something about AM signals breaking in.  What's that all about? Call it what you will, but I still maintain that a receiver, like the KX3, which converts directly to

[Elecraft] Tip regarding noise blanker setup: turn off AGC

Next time you use your transceiver’s noise blanker (or blankers, in the case of the K3/K3S), you might try the following experiment: Turn AGC off, and possibly the preamp as well, when doing noise blanker level adjustment. You may need to back down the AF and/or RF gain controls to hit a

Re: [Elecraft] Not much traffic today

It may not be as subject to solar flares, or as variable, but it definitely propagates. Most don't notice because when one path is down others are open. 73 -- Lynn On 9/10/2017 3:10 PM, Jon Moody wrote: I didn't know the Internet propagated...

Re: [Elecraft] K3 and Expert 1.3K-FA amplifier power

Thanks Don. I got out my old Phillips 25 MHz scope and looked at the calibration sticker dated 1983. I decided to check the readout with a fresh alkaline battery and both the battery, checked with the DVM, and the scope looked OK. I did the measurements on both 20M and 40M, since 40M is less

[Elecraft] XV-144 For Sale

I have a new in the box XV-144 for sale. This is the stand alone 2 meter transverter that puts out (I believe) 10 watts. All manuals included plus a cable or two that is in the box. $375 plus exact shipping double boxed. Paypal accepted Bill AD8P

Re: [Elecraft] Not much traffic today

> I didn't know the Internet propagated... That's why I love this list you > always learn something new every time you read it. Just remember, if you read it on the internet it must be true. Mark AD5SS On Sun, Sep 10, 2017 at 5:10 PM, Jon Moody wrote: > Fred, > > I

[Elecraft] Not much traffic today

Fred, I didn't know the Internet propagated... That's why I love this list you always learn something new every time you read it. -- 73 Jon KG6VDW __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] K3 and Expert 1.3K-FA amplifier power

Brings up an interesting question. My recollection from numerous amps that they may read OK (within 10 -15%) near full power, at low power they typically were way off. I suspect whatever calibration was done, if any, was at the high end of the scale. The load was probably pure resistive and

Re: [Elecraft] K3 and Expert 1.3K-FA amplifier power

Bill, I would say something is not calibrated correctly - either the K3 wattmeter or the power determining device in the amp. It is difficult to say which one without doing some measurements. I would connect the K3 to a dummy load for the 1st test. Get a 'scope out with a 10x probe. The

Re: [Elecraft] Not much traffic today

Or perhaps they were put to sleep by the X8.2 solar flare that pretty much killed HF propagation a few hours ago. Having spent too much of my life waiting out hurricanes in south Florida (some of it involving emergency comm), I agree it is very much not a fun time. Our family escaped the area

Re: [Elecraft] K3 and Expert 1.3K-FA amplifier power

Hi Bill, The non-US model, or the modified US model only needs 10w to drive the 1.3 to full output. I also Ave a k3/1.3 combo and 9W gives me legal out on at least a couple bands, 1200-1400w out all other bands.. I also have an ic7800 for rig 2 and that drives the 1.3 to fiI'll output with 9W

Re: [Elecraft] Not much traffic today

Or the X9.8 flare this morning screwed up Internet propagation. [:-)  20 went out like a light bulb burning out, signals are now reappearing.  Glad to hear you're pretty much in the clear. 73, Fred ["Skip"] K6DGW Sparks NV DM09dn Washoe County On 9/10/2017 2:15 PM, Don Wilhelm wrote: There

[Elecraft] Not much traffic today

There has not been much traffic on the reflector today. I guess everyone is paying attention to the track of Irma as it moves up Florida. I hope and pray that all our ham friends in Florida are hunkered down in a safe location, or managed to get to a location where there will be little or

[Elecraft] K3 and Expert 1.3K-FA amplifier power

I have just set up an Expert 1.3K-FA amplifier with my K3 (with most of the upgrades to become a K3S). My question is, when I drive it with 10W set on the K3 output power, it shows a drive level of about 30W and and output level of 950W. What is going on? Details: The two boxes are connected

Re: [Elecraft] TX Mode issue

One last post and we're done. I think we have a winner.  Josh, W6XU, had asked me earlier whether I had TX Inhibit disabled.  I assumed in the KPA500, he was unaware of that function but was thinking about the inhibit in the K3,  I hadn't thought of that one. So I had sort of a perfect storm

Re: [Elecraft] KX2/3 DSP AM Demodulation

Your KX2 isn't really a DC receiver, it has an 8KHz IF which is then digitized and demodulated in a digital computer executing the demod algorithms to produce baseband output. But the original question was simply "what is direct conversion?" and the answer is, you convert the incoming signal

[Elecraft] Elecraft Weekly SSB Net

Please consider joining us for the weekly Elecraft SSB net on Sundays. We meet at 18:00z (UTC) on 14.303.5 in the 20m band. We exchange information including rig and serial numbers and often rely on relay stations to make contact across the country and further afield (even with QRP stations).

Re: [Elecraft] Adjusting Audio Level for Digital Modes

That works too. 73 Bob, K4TAX On 9/9/2017 6:44 AM, Mike Harris wrote: How about using the mouse scroll wheel, it adjusts the power in 0.1dB steps. At least it does on my Win7 box. The waterfall sliders also respond to the scroll wheel. Regards, Mike VP8NO On 08/09/2017 21:52, Bob McGraw

Re: [Elecraft] [KPA500] Star * before PWR on LCD

Ah, should have search for asterisk instead of * or star! Thanks, 73, Bret/N4SRN -- Sent from: http://elecraft.365791.n2.nabble.com/ __ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help:

Re: [Elecraft] [KPA500] K3S/KPA500/KAT500 - Adjusting TX Power

The difference is Data A mode. In Data A mode ALC action doesn't start until the fifth bar is lit AFAIK it's been that way from the beginning. With Elecraft rigs you don't control power out by adjusting audio level. Adjust your sound card line out to 50%, or less, adjust your software to 50%

Re: [Elecraft] [KPA500] Star * before PWR on LCD

Bret, See transmitting on page 16 of the KPA500 manual. I think that is the only place it is mentioned and is easy to miss. 73, Mark, WB9CIF -Original Message- From: elecraft-boun...@mailman.qth.net [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of MaverickNH Sent: Sunday,

[Elecraft] [KPA500] Star * before PWR on LCD

I'm sure I read it somewhere, but what does it mean when there is a * star pattern before the PWR in the LCD? Search didn't get me there in the manual or forum. Bret/N4SRN -- Sent from: http://elecraft.365791.n2.nabble.com/ __

Re: [Elecraft] KX2/3 DSP AM Demodulation

Scott, The advantage of using the baseband IF is that one can use a baseband filter to provide a roofing filter.  Such filters get more complex if used at 8kHz. It also allows RIT/XIT excursion that is equal on each side of the carrier frequency.  In the KX3, it is +/- 15kHz, while with the