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 8k
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
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Elecraft
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, September
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% o
Ah, should have search for asterisk instead of * or star! Thanks, 73,
Bret/N4SRN
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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
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).
O
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 t
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
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 w
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 no
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 h
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 as
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 th
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 '
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
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
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> 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 didn't know the Interne
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
__
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
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...
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 comfort
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 bas
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 on
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 opposi
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 9/10
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 th
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