On Feb 20, 2015, at 3:08 PM, Fred Jensen k6...@foothill.net wrote:
[…] Averaging tends to suppress noise and can make weak signals stand out
better. Averaging would work in Tracking mode except that every time you
tuned ... even 1 Hz ... the averaging would have to start over. Someone
How about a 555 one-shot timer set for 9.5 minutes, started (and restarted) by
RF sense?
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Feb 19, 2015, at 11:04 AM, Jim Miller jimmil...@stl-online.net wrote:
Nice, Key on the PTT key, you would get one more warning 10 minutes (or 9)
This bad terminology has been around for a long time. My dad’s 1960’s Sherwood
amp (maybe an S-5000?) had a switch on the front labeled “PHASE NORM - REV”.
That was to save you the trouble of reversing the speaker wires after you got
them all connected to the screw terminals. Just choose which
I rarely carry my computer on the trail, but I do carry my KX3.
It would be nice if the KX3 Utility could trim the clock rate. It can read it
and set it. If it recorded the last time the clock was set, it could set a
drift correction, assuming that the clock chip supports that.
wunder
Walter
With no cat, I would recommend Sleater-Kinney.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Feb 15, 2015, at 2:34 PM, Phil Wheeler w...@socal.rr.com wrote:
And those with no cat?:-)
On 2/15/15 1:50 PM, Harry Yingst via Elecraft wrote:
But what about us old Head bangers?
The RX ISO preamp draws a bit more current than the regular preamp, so it
defaults to off to preserve battery life. As far as I know, that is the only
negative.
KX3 models after the mid-2000 serial numbers also have a filter on the BNC to
knock down some leakage in the VHF range. Mine has it —
There is a request for K3/KX3 support in Chirp. I would start with that code
and contribute support.
http://chirp.danplanet.com/issues/248
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Feb 12, 2015, at 1:41 AM, David Anderson gm4...@yahoo.co.uk wrote:
I agree, there is a gap in the
For receive-only, you don’t need a resonant antenna. Stick a wire in the air.
Bypass the ATU so it won’t be a filter.
If you want to get fancy, use a right angle adaptor and stick something like
this on it. Though the loading coil isn’t needed for receive, but it is OK for
transmit.
Most laptop bricks are 16V or higher, too much voltage for the KX3.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Feb 10, 2015, at 12:26 PM, Lynn W. Taylor, WB6UUT
k...@coldrockshotbrooms.com wrote:
Has anyone tried a 12v brick like most laptops use for their KX3?
Comments one way
Looking just at CQWW, both CW and SSB participation is increasing. SSB appears
to be increasing a bit faster than CW.
http://www.cqww.com/stats.htm
Though I just added to the length of this thread, I expect we are getting
off-topic from Elecraft equipment. I tried to add facts and no opinion,
You can use a TRS plug on the KX3 if you set MIC BTN to OFF.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Jan 29, 2015, at 8:55 AM, Phil Wheeler w...@socal.rr.com wrote:
The mic socket in the KX3 is a 4-conductor type. If not wired correctly
(e.g., it's *not* the 4-conductor
You don’t want the KX3 in SSB (USB) for these modes. If you do that, you need
to turn off TX EQ, compression, and RX EQ every time you go digital. Then turn
it all back on for voice.
DATA A exists primarily as a separate config set for USB that takes care of
that for you.
wunder
K6WRU
CM87wj
, Harry Yingst hlyin...@yahoo.com wrote:
Anything Specific to just the actual elements being in parallel?
I do now there is one commercial mic doing this and is supposed to have good
reviews.
From: Walter Underwood wun...@wunderwood.org
To: Harry Yingst hlyin...@yahoo.com; elecraft
You could start with these two, read “close miking” in the Wikipedia article.
The second article is about speech recording for oral historians, so that is
fairly applicable to voice communications. Neither article even mentions using
multiple microphones for one person. The Wikipedia article
I’m confused. “Misguided” means that someone is headed in a wrong direction.
Sharing expertise to help someone out shouldn’t require an apology. Should I
apologize for being an Elmer? Should I let people use poor engineering
practices to avoid hurting anyone’s feelings?
We want people to have
I can’t imagine that paralleling four elements would make a big difference. It
would be more directional at higher frequencies. A 2x2 array would be about
20mm across, which is one wavelength at 17000Hz. That would start to be
directional, because angled waves would cancel out.
wunder
K6WRU
This is getting pretty far off topic, even for someone who has been writing
software for 30 years. See you on the 66 foot band.
A private response might be a good idea. Or hey, a sked!
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Jan 17, 2015, at 12:18 PM, Bill Gerth
I commute from Palo Alto to Santa Clara. I used to check whether I saw a Tesla
on each drive, but that got boring. Now I count Google self-driving cars and I
see one almost every day. Haven’t had a collision with either a Tesla or a
Google self-driving care yet.
I also write software, which
Two channels of 16-bit 192kHz audio compressed with FLAC should use around
500kbits/s. That is a chunk of bandwidth, but it is fairly reasonable for a
remote site. Lossy compression would use less bandwidth, but it would put an
artificial noise floor on the spectrum display. Probably not a good
It might make more sense to mix the IF down to baseband I/Q, bring the audio
back, then run a remote PX3. It would need a high-bandwidth audio connection,
though, probably with lossless compression.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Jan 13, 2015, at 3:27 PM, Harry Yingst
No. That is wrong. Forward and reflected are aspects of the standing wave, not
power delivered. —wunder, K6WRU
On Jan 12, 2015, at 8:53 PM, Vic Rosenthal k2vco@gmail.com wrote:
What I want is just forward - reflected. Neglecting losses, this is what the
tx is 'delivering'. In real life
All power ends in a load.
Forward and reverse power measures standing waves, but all those waves go into
some kind of load. Nearly all of it, if you are lucky, goes to the antenna. The
rest goes to heat. Forward and reverse is just a way to measure standing waves.
It does not mean the some
a wattmeter that has an option to indicate 100 watts in this situation.
Vic K2VCO /4X6GP
On Jan 13, 2015, at 6:56 AM, Walter Underwood wun...@wunderwood.org wrote:
No. That is wrong. Forward and reflected are aspects of the standing wave,
not power delivered. —wunder, K6WRU
On Jan 12
The DATA A mode is USB, but turns off RX EQ, TX EQ, and compression.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Jan 5, 2015, at 1:00 PM, Gary Mohrlant w0...@arrl.net wrote:
I like to using the RX audio Equalization on my K3.
I use the K3 for some of the digital modes and when I
Australia! It is summer there right now. The local dialect (strine) is fairly
close to English.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Jan 3, 2015, at 6:38 PM, Fred Jensen k6...@foothill.net wrote:
On 1/3/2015 6:19 PM, Jim Lowman wrote:
I know that many fellow amateurs head
Well heck, Elecraft has only sold eight or nine thousand KX3’s. Heil should
wait until it is a sure thing. That is just good business.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Dec 28, 2014, at 4:25 PM, Don Wilhelm w3...@embarqmail.com wrote:
Carl,
Take note that Heil does not
Record a sample on the DVR and play it back to hear what is going on.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Dec 21, 2014, at 1:48 PM, Don Wilhelm w3...@embarqmail.com wrote:
Jim,
A reverb sound suggests that you may have the monitor on. With a headset,
that usually works
Jim updated this in July to recommend two current, high-quality USB audio
interfaces. At $49 and $99, either is cheaper than the Signalink.
http://www.bhphotovideo.com/c/product/639303-REG/Numark_STEREO%7CIO_Stereo_iO_USB.html
That leaves the heatsink sealed up in the box, so it is likely to overheat.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Dec 18, 2014, at 4:14 PM, Michael Walker va...@portcredit.net wrote:
I have to admit, I really like this setup.
http://www.oe2atn.at/tom/gobox/
Mike va3mw
The Signalink is noisy and the VOX is not needed because you can use the KX3
VOX.
I highly recommend reading K9YC’s short paper on audio interfacing. He knows
more about this stuff than I ever will.
http://audiosystemsgroup.com/USB_Interfaces.pdf
wunder
K6WRU
CM87wj
Platinum-clad hotcakes, perhaps.
On the other hand, they could work with a well-respected manufacturer to make
an “Elecraft Edition” amp that was tightly coupled.
Either way, out of my price range.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Dec 12, 2014, at 5:45 PM, Richard
I strongly recommend that you upgrade to Moleskine notebooks and Blackwing
pencils. Contest logging deserves the best.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Dec 7, 2014, at 3:01 PM, Orville orvi...@rubyglass.com wrote:
Or possibly consider the method I use which does more
On Nov 19, 2014, at 5:43 AM, Lyle Johnson kk7p4...@gmail.com wrote:
Note that the KX3 has a great tool for adjusting Tx EQ and CMP. Record your
voice using the DVR, then play it back using MON. Adjust Tx EQ and CMP and
play back the sample and you will be able to hear what your signal will
That page is on the same site as the fldigi docs, “The Sights and Sounds of
Digital Signals”. That sounds like a paper I might have written during an
all-nighter in college...
http://www.w1hkj.com/FldigiHelp-3.21/Modes/index.htm
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Dec 3,
/news1410.pdf
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Dec 3, 2014, at 4:33 PM, Walter Underwood wun...@wunderwood.org wrote:
That page is on the same site as the fldigi docs, “The Sights and Sounds of
Digital Signals”. That sounds like a paper I might have written during
I’m not a CW operator, but if you have any RSI issues from computer use, be
careful about spending a lot of time with a straight key. Professional
telegraphers got an early version of RSI called “glass arm”. It appears that
you can avoid that with excellent technique, the same way you avoid RSI
It should be better. Bone conduction happens while you are speaking and
enhances the bass. If you listen without speaking, you get a much better idea.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Nov 19, 2014, at 5:51 PM, David Ahrendts davidahren...@me.com wrote:
David, thanks for
Lower case for kilo and hecto might have been chosen to avoid collisions with
fundamental and derived units: K is Kelvin, H is Henries. Of course, micro
collides with m (meters), but Mega was already taken.
Just a guess.
I’m hoping we never have to deal with a TT (teraTesla). Well, that might
Go to this page and scroll down to “KUSB” for instructions and downloads.
http://www.elecraft.com/K3/k3_software.htm
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Nov 18, 2014, at 5:02 PM, Fred Townsend fptowns...@earthlink.net wrote:
Jim:
By cable I think you mean USB to RS232
Elecraft is always looking at improvements. Wayne sent this response to another
compression discussion on the KX3 list a few days ago:
I believe we may be able to improve compression without causing splatter, but
this will require experimentation with new algorithms. This is definitely a
goal
Plasma TV in the neighborhood?
The PX3 could be picking it up through the connecting cables if it is strong
enough.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Nov 15, 2014, at 6:26 PM, Alan n...@sonic.net wrote:
Horizontal scan rate on a video monitor?
Alan N1AL
On
A lot of people use VOX instead of PTT for digital modes. —wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Nov 12, 2014, at 10:06 AM, RIchard Williams via Elecraft
elecraft@mailman.qth.net wrote:
Jorge,
Interesting enough, at a recent club meeting, the presentation was on using
the
I agree, though the CM500 isn’t that bad for backpacking, and I go lightweight.
A KX3 with batteries is very close to one kilogram. A wire antenna adds another
100-150g. The CM500 is 300g. Some earbuds (haven’t weighed them) and an
Elecraft MH3 (138g) are lighter, but the difference isn’t a
There is a difference between obeying the law and enforcing the law. We all
have an obligation to obey the law. We might not have a right enforce it.
Think about someone driving 55 mph in the fast lane because they want to
enforce the law. This is not a perfect analogy because there are are
For Amphenol, it depends on whether it is a front-mount or rear-mount.
Front-mount is 0.562 in. (9/16 in. or 14.3mm). Rear-mount is 0.750 in. (19mm).
Specs: http://www.amphenolrf.com/pdf/189.pdf
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Oct 21, 2014, at 4:00 PM, Dave G.
A choke in the middle of the transmission line could help, but the usual
configuration is a current balun at the antenna to reject common-mode signals
at the source, plus an optional choke at the entrance to the shack to reject
noise picked up by the outside of the coax shield.
A coiled-coax
Does he want to use CW or voice mode? If he wants to use voice, the mic will
pick up whatever is in the room and transmit it.
Also, if he wants to operate with voice, he really needs to set it up with the
steps on page 15 of the manual. Really.
wunder
K6WRU
CM87wj
In a dry climate, ladder line is fine, but good coax has low losses, too, and
is less fussy about being run next to the gutters.
It is rare for a dipole to be perfectly balanced (thanks to near field objects
like houses), so a high-quality current balun at the antenna can really help
reject
PSK spots are here, the PSK63 ones are identified as such.
http://hamspots.net/psk/
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Oct 16, 2014, at 8:03 AM, ejk...@gmail.com ejk...@gmail.com wrote:
I have been unable to find any PSK63, spent some time yesterday looking.
I have been
A few people say that 1.5-2.5V is provided for the microphone. This makes
since, because they need to sense the button presses, too.
Most people are trying to put other headsets on iPhones or Macs, but the info
may be useful.
http://www.zerologic.com/Blog/iPhone-Headphone-plug-pinouts.html
BNC power handling is similar to UHF connectors. BNC connectors are rated for
500V, same as UHF connectors. Amphenol does not specify contact resistance for
UHF connectors. The full BNC specs are here:
http://www.amphenolrf.com/products/CatalogPages/BNC.pdf
wunder
K6WRU
CM87wj
The radiation patten from a half wave antenna is the same whether it is end fed
or center fed. An inverted vee is an inverted vee, regardless of whether you
feed it at the center or the end. The same for a sloper.
Put up the wire and the feed where it works for you, sloper, horizontal, or
vee;
For those of us with a KX3 instead of a K3, what would be the frequency cutoff
for “three lowest bands”?
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Sep 17, 2014, at 5:52 PM, Jim Brown j...@audiosystemsgroup.com wrote:
On Wed,9/17/2014 3:52 PM, Ignacy wrote:
I also found by
Eh? A 40m dipole is pretty close to resonance on 15m already, so how can you
avoid that. In fact, all dipoles are resonant at odd multiples of half waves,
so this is impossible to avoid.
Could you clarify the issue here?
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Sep 13, 2014, at
. The loaded 80m element is just a few feet longer
than the 40m element.
That is the 3B2080LFAN from Hy Power Antennas. Good construction at a good
price and a clever idea.
http://www.hypowerantenna.com/products/fan-dipole
Walter Underwood
wun...@wunderwood.org
http://observer.wunderwood.org
Open it up and reseat all the cables.
This feels like the kind of flakiness that a poor cable connection causes.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Sep 12, 2014, at 6:55 PM, Mike Murray w0agm...@gmail.com wrote:
Just received an almost unused KX3 from a friend and seem to
See “VFO B Alternate Displays” on page 36. The displays are “AFV” and “dbV”.
http://www.elecraft.com/manual/E740107%20K3%20Owner's%20man%20D10sm.pdf
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Sep 5, 2014, at 3:25 PM, Jim Rogers jim.w4...@gmail.com wrote:
Well, I missed it too.
because at my advanced age, I have an
excuse. :-)) Thanks Walter.
73s Jim W4ATK
On 9/5/2014 5:29 PM, Walter Underwood wrote:
See “VFO B Alternate Displays” on page 36. The displays are “AFV” and “dbV”.
http://www.elecraft.com/manual/E740107%20K3%20Owner's%20man%20D10sm.pdf
wunder
K6WRU
Further, the whole story is on their site:
http://onlyagame.wbur.org/2014/08/09/wrtc-radiosport-ham-radio
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Aug 8, 2014, at 5:01 PM, Fred Jensen k6...@foothill.net wrote:
The vast majority of amateur radio operators are male. The primary
Batteries are probably the #1 topics on the Summits on the Air (SOTA) mailing
lists. The consensus is that the LiFePo4 packs are the best if you can afford
them. For lithium-ion, the cheapest reliable packs seem to be from Hobby King.
Li-ion packs are touchy. At least one person charges theirs
Which Elecraft rig? —wunder, K6WRU
On Jul 31, 2014, at 5:57 PM, Jack Berry via Elecraft elecraft@mailman.qth.net
wrote:
I notice on MARS frequencies (slightly outside ham bands) that my power
output starts out low and builds to full output over 10-20 seconds of
transmit. The symptom is
The “about” message for the group prohibits spamming, advertising, and
commercial messages. Saying “I bought this and I like it” is not any of those
and is not a basis for banning someone.
I’ve run many large mailing lists and I know how much work it is. I rode herd
on 5000 Hewlett Packard
One side topic was “how long could power be out?”
At the Carleton Complex fire in Washington, power is being restored after seven
days.
I grew up in Baton Rouge. After Hurricane Betsy in 1965, our phones were out
for seven days and power for ten days. We lived in a suburban area in the
middle
testing than generating hours. I hope it stays
that way.
73,
Bob
K2TK ex KN2TKR K2TKR
On 7/27/2014 1:04 PM, Walter Underwood wrote:
One side topic was “how long could power be out?”
At the Carleton Complex fire in Washington, power is being restored after
seven days.
I grew up
Thank you. I’ve done this by eyeball for pairs of rigs, but this really helps.
It is a huge chunk of work to compile this.
“Thanks” seems inadequate,
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Jul 27, 2014, at 5:25 PM, Jim Brown j...@audiosystemsgroup.com wrote:
On 7/27/2014 3:19
If you are OK with open back headphones, the Grado SR-60 ($80) has been the
best deal in audio for a long time. You can turn headphones into a headset
with the ModMic add-on boom mic ($50).
http://www.modmic.com/
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/
On Jul 17, 2014, at 8:19
On Jul 17, 2014, at 9:36 AM, Bill W2BLC w2...@nycap.rr.com wrote:
Where for $80?
Bill W2BLC K-Line
I presume this is a question about the Grado SR-60. The SR-60e model was just
introduced and is out of stock in many places. The list price is $79. I have
the original SR-60 model, which was
My neighbor in high school worked on lightning arrestors for GE. I’m still sad
that I never asked to visit his lab.
Walter Underwood
K6WRU
CM87wj
http://observer.wunderwood.org/
On Jul 15, 2014, at 7:08 PM, Bob k...@att.net wrote:
Hi Bill,
No issue with that. In my mind though
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Elecraft support might be better than great. Perhaps unequaled or
awesome.
I've been part of a medium-audience product and given really good support to
customers large and small (from IBM and HP to small universities at a 50%
discount). We had something upwards of 10K customers over a 10+
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Kosher ham on the roof?
I saw Fiddler on the Roof on Broadway in a choir trip to NYC in 1972 (when my
Novice ticket was still valid). It was a life-changing show. Remember to wear
your hat.
wunder
K6WRU
On Jun 27, 2014, at 9:30 PM, Kevin kev...@coho.net wrote:
Good Evening,
Please don't
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, Walter Underwood wun...@wunderwood.org
wrote:
That is several very big questions, and enough that I suggest getting a copy
of the ARRL Antenna Book and reading before spending much money. And talking
to a lot of hams that already have towers.
Multi-band Yagi antennas are multi-band
Compression should not matter, because that is disabled in DATA A mode.
I'd save the config, EEINIT, and reload. If that doesn't fix it, ask
supp...@elecraft.com
wunder
K6WRU
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On May 24, 2014, at 6:48 AM, Don Wilhelm w3...@embarqmail.com wrote:
Julie,
Check
-- but then
compression can be an issue.
Come to think of it, it would be good to know just how they are set up --
which mode, which modem (e.g., SignaLink usb), etc.
Phil w7ox
On 5/24/14, 8:37 AM, Walter Underwood wrote:
Compression should not matter, because that is disabled in DATA A mode
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And we're still using RS-232 instead of USB. And UHF connectors, which have
been obsolete since the 1940's (when the N connector was developed). It is all
kind of embarrassing.
wunder
K6WRU
On May 17, 2014, at 7:42 PM, HREFAB j...@hre.com wrote:
I am continually astounded to see expensive
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On May 13, 2014, at 4:43 PM, Walter Underwood wun...@wunderwood.org wrote:
Never confuse mathematics with arithmetic. Totally different things.
--wunder, K6WRU
On May 13, 2014, at 4:21 PM, Fred Jensen k6...@foothill.net wrote:
I made a little mark at the 4th bar position on the display
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It isn't a delicate wallflower, but it is a pretty expensive and complicated
way to get 3W on 2m FM. And it isn't really designed for general-purpose 2m
use. Will it have automatic repeater offsets on 2m? Maybe not.
With a dual-band mobile, you can use a high-gain 440 antenna. You'll also have
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, Walter Underwood wun...@wunderwood.org
wrote:
You asked about a specific application, co-ordinating rider
leader/wingman/tailgunners actions during rides. A VHF mobile or VHF/UHF
mobile is perfect for that. They are small, affordable, and the mobile
antennas are efficient.
The issue
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