On 8/29/2020 12:41 PM, W2xj wrote:
page is too busy and is not iPad friendly. I haven’t used a PC for 15 years.
That's YOUR problem, not mine.
You need to work more on webpage layout.
Let's see if I understand this. I spend thousands of hours doing
extensive research and generating free co
On 8/28/2020 6:25 PM, W2xj wrote:
Your website could use larger and easier to read fonts.
Use < +> to zoom window or go to settings in your browser to zoom
in or out. Has worked fine on my browsers for 25 years. Yours is the
first complaint.
73, Jim K9YC
_
On 8/28/2020 4:58 PM, James Bennett via Elecraft wrote:
If you have limited property and still want to operate 160, take a look at the
FCP.
Yes, two of my friends have had success with it, and it's one of many
options in the 160M slide show that I posted a day or two ago in this
thread. k9y
On 8/28/2020 4:38 PM, Rick Bates, NK7I wrote:
For the record, I agree but as I made no series of qualifying tests;
I've done both building and modeling. When I first moved to W6 in 2006,
I had a 160M dipole up about 110 ft redwoods AND a Tee vertical about 80
ft vertical with enough top to re
t year but was
able, this year, to confirm 2261 contacts this year. It has been fun.
Marv
KG7V
CN77
-Original Message-
From: elecraft-boun...@mailman.qth.net On
Behalf Of Jim Brown
Sent: Thursday, August 27, 2020 7:43 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] 6M E-skip
O
On 8/27/2020 9:14 PM, David Gilbert wrote:
I have no problem at all with folks who for whatever reason elect to go
with something that "works". I do have a problem with them promoting to
others it as being "good" without some supporting data other than "I
worked such and such".
Same here. We
On 8/27/2020 12:26 PM, Rick Bates, NK7I wrote:
Jim, I'd submit that not only is 160M more challenging on the left
coast, but 6M is worse since it tends to be N/S much of the time and
even the coastline leans left so not many stations are south. ;-P 6M
like 160, also 'spotlights' but in pinpoi
On 8/27/2020 1:42 PM, Lyn Norstad wrote:
While I appreciate the common opinion that 160m 'means' vertical, the fact that
I worked all states on 160 over a weekend, without breaking a sweat, leads me
to believe that I would benefit little by going that route.
A study of the ARRL Handbook and A
On 8/27/2020 11:01 AM, Tox wrote:
I suspect we should both be working on improving our antennas/matching
rather than adding more chokes inside the shack (didn't work for me either).
YES!
Jim K9YC
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On 8/27/2020 11:01 AM, Jim Brown wrote:
These issues are often prevented simply by practicing the proper bonding
within the station,
I failed to provide this link to slides for talks I've done at
Pacificon, Visalia, and to several local clubs.
http://k9yc.com/GroundingAndAudio.pdf
On 8/27/2020 10:39 AM, Mike Flowers wrote:
Sometimes, a line or cable is just the right fraction of a specific wavelength
to act as an efficient antenna, and RF will find it's way in.
These issues are often prevented simply by practicing the proper bonding
within the station, providing a coun
On 8/27/2020 9:43 AM, Lyn Norstad wrote:
The
Society of Midwest Contesters (https://www.w9smc.com/) recognizes the
Midwest ... lovely as it may be ... to be the infamous "Black Hole" when it
comes to dx-ing. Virtually any coastal location runs circles around us when
it comes to the ease of makin
On 8/26/2020 4:20 PM, Nate Bargmann wrote:
A low horizontal antenna has its place, for local work especially out to
a few hundred miles reliably. Horses for courses and all that.
That's an urban myth. A low horizontal antenna is very lossy, and has
much weaker radiation at ALL angles, includi
On 8/26/2020 10:07 AM, David Gilbert wrote:
Radiation angle for a vertical antenna is much more a function of the
ground conductivity out several wavelengths than it has to do with the
current balance in the radials.
Right, but N6LF has shown that current balance in radials, especially
elevat
Right on, John! Also N7WS, who urges study of N6LF's authoritative site.
Rudy is a major contributor to ARRL Handbook and Antenna Book. And to
AB7E who urges modeling. You can't model radial/counterpoise systems
without a far more capable version of NEC, but you CAN model the
difference between
On 8/24/2020 8:17 PM, Clay Autery wrote:
Side bonus, was that the 12VDC ground plane was so good afterwards, that
I have been able to take out a lot of the home run grounds from a bunch
of lights, et al... ofsetting weight gain by some bit.
Important fundamental concept, Clay, that I learned i
On 8/24/2020 9:03 AM, Mike Short wrote:
RFI on audio, agreed. Noise on DC, not so much. Routing is the most
important factor for DC power. It is hard to get enough turns on the
proper size wire to make a difference.
Yes, routing is important. But what you're missing is that a major issue
is R
Yes, and this should definitely be twisted pair, contrary to what's on a
highly regarded mobile site. Also, radio equipment in vehicles should
NOT by bonded to the frame/chassis/vehicle metal.
OTOH, coax return for HF mobile antennas SHOULD be bonded to vehicle
metal, because that's what serve
On 8/24/2020 11:56 AM, Ted Edwards W3TB wrote:
My thanks to everybody.
It is rather overwhelming for just a Sunday afternoon of portable
operation in remote counties powered by the car.
I will really want to keep simple in those terms.
In that contest, I'd simply use smaller gauge twisted pai
Of course it applies. Mother nature does not pay attention to what we
CALL things. It is quite common for DC and mains power to carry AF and
RF currents. That's how most noise is radiated -- as a common mode
signal on cables connected to equipment that includes noise sources.
BTW -- as Vice-Ch
On 8/24/2020 8:11 AM, Mike Short wrote:
Twisting the wires doesn’t do anything.
Au contraire! Twisting provides an excellent rejection of of crosstalk,
including RFI. Have you not noticed that CAT5/6/7 cables are four
tightly twisted pairs, each with a slightly different twist ratio, all
ve
On 8/20/2020 6:07 PM, ab2tc wrote:
Does anybody have any experiences like this and/or any suggestions what to
do?
This, and a lot of other noise sources, are addressed extensively in
these two pdfs.
http://k9yc.com/KillingReceiveNoise.pdf
http://k9yc.com/KillingRXNoiseVisalia.pdf
73, Jim K9Y
On 8/17/2020 6:25 PM, Wayne Burdick wrote:
RTTY is the easiest to use, for three reasons -- assuming you have a KX3 or KX2:
That's the easy part. The hard part is finding someone to work, except
during RTTY contests, and contesters are not going to be happy with RTTY
sent that way. :)
73, J
On 8/17/2020 3:17 PM, Bill Frantz wrote:
hat I don't know is the relation between radio and other electronic
equipment and a lightning rod installation. For example, do you bond the
radio grounds to the lightning rod grounds? At ground level, or anywhere
along the wire?
Too bad I can't find m
On 8/17/2020 4:04 AM, Tom Doligalski via Elecraft wrote:
I’ve had a similar experience: lightning came in via the cable line,
Lightning also induces current on wiring inside our homes.
took out the cable modem, the router, the PC, and the serial interface
on the K3.
This is a VERY common p
On 8/15/2020 8:51 AM, Jim Brown wrote:
Also, this talk, first at Pacificon, next at Visalia DX, and to saveral
ham clubs, all of which preceded Ward's book.
forgot the link.
http://k9yc.com/GroundingAndAudio.pdf
73, Jim
On 8/15/2020 5:48 AM, John Simmons wrote:
Grounding and Bonding, ARRL book by Ward Silver
Yes. I collaborated with Ward on it. Also, this talk, first at
Pacificon, next at Visalia DX, and to saveral ham clubs, all of which
preceded Ward's book.
73, Jim K9YC
_
On 8/10/2020 9:00 AM, Jim H via Elecraft wrote:
Hi,I'd like to add the PAE power supply. Small, noise free.73
This PSU IS quiet when supplying the 150mA or so needed on receive, but
pretty noisy with the much larger currents needed for transmit. That
means it's fine if it only powers a KX3 an
On 8/9/2020 6:35 AM, Art Suberbielle wrote:
Did Elecraft answer the big question-When will they start shipping the K-4?
Hi Art,
It's all governed by what they can do during COVID. including what they
can get from their vendors.
73, Jim K9YC
__
On 8/8/2020 5:15 AM, Rich NE1EE wrote:
I don't need a printed manual with my device. I think that they can look nice
and be useful, though. I do appreciate a PDF that is not write protected, so
that I can make my own notes and correct mistakes. I also appreciate a manual
that is updated regula
On 8/6/2020 10:13 PM, eric norris via Elecraft wrote:
It drops constantly, all hours of the day and night.
Eric,
I had that problem for years here in the house I bought in NorCal.
Turned out to be a 6dB attenuator that the Comcast installer had added
to the tap-off that already had the right
On 8/6/2020 3:35 PM, Gwen Patton wrote:
This is precisely why we don't have Comcrap and instead have FIOS. We had
constant trouble with Comcrap, and almost ZERO problems with Verizon.
Wish I had that option, but I'm lucky to have a POTS line here in the
Santa Cruz Mountains. No cell coverage a
On 8/6/2020 2:32 PM, eric norris via Elecraft wrote:
My house is 65 yrs old, none of the outlets have grounds, not even the
bathroom. The entire kitchen is on one circuit, etc, etc.
Before I call the Comcast supervisor, I'm hoping for some advice from the group.
While the house is probably "g
On 8/5/2020 1:50 PM, Edward R Cole wrote:
Lots about this option, but what exactly does the upgrade provide over
the standard board?
USB interface for both control and audio. Don't know if they fixed the
Pin One Problems that exist in the orginal.
73, Jim K9YC
___
On 8/5/2020 12:39 PM, Grant Youngman wrote:
We agree. But the transition from one essentially modern radio to another, is
still mostly a matter of figuring out what each control does, where it is, how
to read the display, and where to connect the antenna. The exception I’d make
is that if yo
On 8/5/2020 10:40 AM, Grant Youngman wrote:
It seems to me that if you need training classes or training videos to
effectively use a radio, then that’s a problem — either with the radio’s owner
(and I mean no disrespect to anyone) or with the radio.
I agree, but with this caveat. Each radio m
On 8/5/2020 6:16 AM, j...@kk9a.com wrote:
Inrad made the 8-pole filtershttps://www.inrad.net/home.php?cat=140 and
they should still be available.
It's my understanding that the spec is tighter for the filters they
supply to Elecraft than for their general production.
73, Jim K9YC
__
On 8/3/2020 8:51 PM, Gwen Patton wrote:
I do have a small Bluetooth transmitter I can plug into the radio and then
pair the speaker or my BT headset, but I rarely use it.
Although I haven't tried it, I suspect that the latency would make it
useless when sending CW with a paddle or straight key
On 8/3/2020 6:58 PM, Ron Manfredi wrote:
I tried both an amplified Motorola speaker and a small MFJ unit, but
when using SSB (10-15 Watts) at home into a beam or into a dummy load I
can hear myself quite clearly in the speaker, so RF is getting in somehow.
Powered speakers have a power amplifi
On 8/1/2020 12:12 PM, David Gilbert wrote:
My gripe with the original post from G3UNA was simply his generalization
that resonant antennas are bad and that non-resonant antennas are good.
Same here. Most antennas that we can install are some form of
compromise. Higher is better. One size fits
On 7/31/2020 2:04 AM, CUTTER DAVID via Elecraft wrote:
With Elecraft matching units you don't need (and it can be undesirable to have)
antennas made for a particular band. You make life easier for the matching
unit by making your antenna non-resonant on bands you want to use.
This statement
On 7/29/2020 12:25 PM, Arliss wrote:
Except that several REAL Amphenol UHF connectors I ordered, which
arrived in sealed plastic bags, had no threads on the inside of the
coupling rings. The remainder of the connectors in the shipment were
just fine.
I've seen that too, no more than one bad o
On 7/29/2020 11:21 AM, Walter Underwood wrote:
That is exactly why I consider UHF connectors to be a poor design.
There's nothing wrong with REAL UHF connectors, like Amphenol 83-1SP,
and surplus adapters stamped with MIL spec numbers. It's the cheap junk
connectors that cause the problems. M
On 7/24/2020 5:12 PM, K4PX K4PX wrote:
Anybody have any idea when K4 will ship?
Anyone have any idea when the pandemic will be over?
73, Jim K9YC
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On 7/21/2020 3:03 PM, Grant Youngman wrote:
If the cable is shielded, and the garbage is on the PC's USB signal lines, an
external ferrite won’t do any good. I don’t know if the cable is shielded or
not, but if it is, then the garbage may not be on the shield … and perhaps the
USB isolator mi
On 7/21/2020 11:10 AM, Ignacy wrote:
Perhaps the USB cable acts like an antenna.
That often happens. But it can also excite a Pin One in whatever it is
connected to on either end.
For RFI transmitted via USB cable, try USB isolator. E.g.,
https://www.amazon.com/SMAKN-Isolator-Digital-Isolati
On 7/19/2020 8:13 PM, Andy Durbin wrote:
I still don't see the advantage of AUX bus giving the KPA1500 the TX frequency
to 1 kHz resolution. What am I missing?
At this point in time, it may not matter. But who knows how we will be
using our radios 10-15 years from now? The early K3s on my o
On 7/17/2020 6:35 AM, Charlie T wrote:
ust to make this plain, do NOT run your 100/200 watt radio at max output
and depend on the ALC connection to cut it back.
Right! Using ALC between power amp and rig to set TX power is a recipe
for massive splatter and clicks.
73, Jim K9YC
__
On 7/16/2020 9:57 PM, Ken WA8JXM wrote:
So pruning a horizontal dipole will never provide a 1:1 SWR except at 0.18
wavelength above ground (the ONLY elevation where the radiation resistance
is 50 ohms)? About 97 ft for 160m, 24 ft for 40m, 6 ft for 10m? A dipole
a half wave above ground has a 7
Great post, Gary.
73, Jim K9YC
On 7/16/2020 8:36 PM, Gary Smith wrote:
I'm always bemused when a completely
unexpected series of profoundly affecting
variables, none of which are from internal
causes, make themselves a factor in
development and construction, appear and
globally interfere with d
On 7/16/2020 3:14 PM, Joseph Shuman via Elecraft wrote:
Check your math. World population is about 8 Billion. Give everyone a Covid
distance of two meters, or four square meters per person. That gives us 32
billion square meters to socially distance the world population. California is
abou
On 7/16/2020 3:07 PM, j...@kk9a.com wrote:
Things may be different in California but here in North Carolina I do not
know of any manufacture or supplier that closed.
The impact of COVID has varied widely with geography and how each region
(even a locality) relates to others. It also varies a L
On 7/16/2020 2:25 PM, Gmail - George wrote:
I don't ever recall that tightening a
connector with pliers corrected these discontinuities. We solved the poorly
made connectors by going to crimp style of connectors.
There is a very large difference in signal to noise ratios and operating
power le
On 7/16/2020 11:05 AM, Carl Yaffey wrote:
What? We’re not getting interest?
:)
A look at the latest statement from wherever we store our money will
tell us that the current interest rate is quite close to zero percent.
73, Jim K9YC
__
On 7/16/2020 10:46 AM, Mike Harris via Elecraft wrote:
I must say that over many years and without any ill effect I've never
bought into this idea of Gorilering up a PL259 with pliers beyond finger
tight. A quarter of a turn is an unbelievable suggestion. I've just
tried it and a couple of degr
On 7/16/2020 10:20 AM, Tox wrote:
The parts availability issue was supposed to have been resolved pre-covid.
To varying degrees, the whole world is affected by COVID, including
manufacturers and distributors of parts. Few are designated as essential.
73, Jim K9YC
On 7/16/2020 1:14 AM, Victor Rosenthal 4X6GP wrote:
If the antenna is well-balanced and fed via a true balanced antenna
tuner (preferably link-coupled) then there shouldn't be a problem with
common mode currents.
Few ham antennas are perfectly balanced -- they are often unbalanced by
their su
On 7/15/2020 1:36 PM, CUTTER DAVID wrote:
It's all about size. Bigger core helps,
Dave,
No, it is NOT about size. It is about design of the entire antenna
system, including the antenna, the feedline, and other parts needed to
make the SYSTEM work. The principal characteristic of a common mo
On 7/15/2020 11:46 AM, CUTTER DAVID via Elecraft wrote:
Ferrite-cored chokes (balun) heat up and change apparent swr.
Not if they are properly designed and properly applied. And not all
antennas can be choked -- in general, only resonant antennas can be
effectively choked. Chokes applied to n
On 7/13/2020 11:26 PM, Doug Turnbull wrote:
Even using CW it is infinitely easier to work
DXCC on multiple bands these days than back in the fifties, well maybe I
will make an exception for the 1958 era.
Except that noise levels have escalated by 20 dB since that era.
73, Jim K9YC
Blank posts. This reflector does not reproduce formatted text
73, Jim K9YC
On 7/13/2020 9:48 AM, Donald Schliesser wrote:
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Two great posts, Dave. Thanks!
73 Jim K9YC
On 7/13/2020 12:59 AM, David Gilbert wrote:
Fine, but that demarcation is pretty arbitrary. You could just as
easily go back to tube gear with crystal controlled transmitters and
regenerative receivers., but I'd be a lot of money you don't. The gea
I bought three of these transverters used about 15 years ago from a ham
who had built them, and mostly they sat on a shelf after I'd moved
across the country. They were for the 50, 144, and 220 MHz bands. I sold
the 50MHz unit once I had a K3 that covered that band, loaned the 220
MHz unit to a
I was lucky to start with DXKeeper when I got back on the air in 2003.
It's perfect for what you want to do, and it's a VERY powerful logger.
It's FREE, works well with LOTW, eQSL, and ClubLog, and it integrates
well with JTAlert. Its author, AA6YQ, recently received an award for
technical exce
On 7/3/2020 6:07 AM, Rich wrote:
Should I not be concerned about the difference in impedance?
You should NOT be concerned. You SHOULD be concerned about Pin One
Problems, which make the mixers prone to RFI. Mackie and Rane built
after about 1998 should be free of this mfg defect.
73, Jim K9
On 7/2/2020 9:54 AM, Terry Brown wrote:
1. Is rapping 10 turns of the electrical wires of each circuit around
the toroid enough?
Use the recommendations in http://k9yc.com/2018Cookbook.pdf as a
starting point, and study k9yc.com/RFI-Ham.pdf to understand concepts.
2. The elec
On 7/1/2020 8:26 AM, Charlie T wrote:
I can tell you that super sensitive receiver performance is NOT a
pre-requisite to working LOTS of DX of 50 MHz.
But it CAN be critical to working the weakest stations that you might be
chasing for an award or a new state, grid, or country.
73, Jim K9YC
On 6/30/2020 4:31 PM, Dave Sublette wrote:
Does anybody KNOW what the noise figure is for the 50MHz preamp on the
K3s? It isn't listed in the specifications.
I don't know, but I'm using an ARR GasFET preamp at the RXIN/OUT patch
point, and the ARR 0.5 NF seems to be slightly better than the
On 6/29/2020 7:09 PM, Don Wilhelm wrote:
Fred addressed 3 different learning methods in his books. First was
those who learn by reading (I am one of those), 2nd is those who learn
from examples (expanded reading) and thirdly those who learn from
hands-on exercises. Fred addressed all 3 in his
On 6/29/2020 3:57 PM, Matt Maguire wrote:
I would suggest that the architecture of the K4 is a significant departure
from the K3 series, and I would think that the books treating the K3 would
be of limited usefulness in understanding how to get the most out of the K4.
Maybe study the manual? Wo
On 6/27/2020 2:22 PM, hawley, charles j jr wrote:
Measure which wire goes to the outside shell of the connector, that’s ground.
Not always -- I have at least one consumer product and one piece of pro
test gear that has V+ to the outside of the connector.
73, Jim K9YC
On 6/23/2020 5:49 PM, K8TE wrote:
I experienced similar issues with my K3 and an IC-7600 several years ago at
a different FD site.
A contester neighbor ran an IC7600 into a legal limit amp. 15 miles
away, he chewed up almost 20 kHz of whatever band he was on running CW,
and he was always runn
On 6/23/2020 4:53 PM, Adrian wrote:
An excessive strength FT8 signal is easy to remove with notch.
Yes, BUT -- the notch introduces phase shift, which can degrade
decoding. K1JT recommends running the IF wide and letting WSJT-X
separate signals.
I DO strongly differ with the advice in the
On 6/23/2020 3:27 PM, donov...@starpower.net wrote:
We use more than a dozen K3 transceivers at the W3AO Field Day with
as many as four operating in the same band (CW, SSB, FT8 and GOTA SSB),
but not this year...
What power level, Frank?
73, Jim K9YC
___
Hi Bill,
I don't have a K4, but I do have a KPA1500 and KA500. Both do flawless
QSK using PIN diodes.
73, Jim K9YC
On 6/22/2020 11:01 AM, Bill Lederer wrote:
When you are using the amp, do you do break-in there as well?
__
Elecra
On 6/20/2020 12:39 AM, oz6...@qsl.net wrote:
Spoke with Wayne. He says I found a bug in the firmware and will be updated.
Think of another company IN TH WORLD whose OWNER, or even Owner's
Representative, will give 0.1% of THIS owner's response to a customer.
73, Jim K9YC
___
Thanks Gus. It's been almost ten years since I set mine. :)
73, Jim K9YC
On 6/19/2020 8:22 AM, Augie "Gus" Hansen wrote:
The adjustment range is ± 16 dB, not 18. Let's not have folks thinking
their K3s are broken because they don't go that far. ;>)
On 6/18/2020 8:30 PM, oz6...@qsl.net wrote:
How do I get my K3 Tx audio to have more “punch”.
Set TXEQ as follows: Three lowest bands max cut (-18 dB), fourth band -6
dB, two highest bands +3 dB. Turn COMP all the way down, then set Mic
Gain per the manual. NOW, turn up COMP, set the display
Hi Ken,
All it takes to band switch both amp and tuner is a dit or a tap on the
mic.
73, Jim K9YC
On 6/18/2020 10:23 AM, Ken Winterling wrote:
There is no provision at all to communicate with the KAT500 so it
must RF sense to switch bands and select the correct antenna. While this
works wel
On 6/17/2020 1:44 PM, Josh Fiden wrote:
Also nice to have an amp you can run from 120v if needed.
Yes. The KPA500 and KAT500 see a lot of use for 7QP and CQP expeditions,
and for 6M grid expeditions.
73, Jim K9YC
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On 6/16/2020 8:06 AM, Eric KG6MZS wrote:
Interesting. So what level do you recommend?
Sorry, forgot to finish that thought. Level should be adjusted so that
the green bar stays in the range of 70-75 dB with the strongest signals
filling the display, but never turning red, which indicates dig
On 6/15/2020 4:55 PM, Wes wrote:
OK QSL.
All of my computers have soundcards including the, soon to be replaced,
shack Lenovo laptop. I tried a TASCAM US-100, highly recommended by
K9YC, without seeing any improvement over the Lenovo on digital modes.
Hi Wes,
You might want to look at the
On 6/15/2020 9:30 AM, Eric KG6MZS wrote:
In 2017 Jim (K9YC) recommended two (ASUS and Newmark) that are no longer
available.
Most of the products I recommended can be found on ebay. As with any
purchases online, pay attention to customer ratings and the "look" of
the listing.
73, Jim K9YC
On 6/15/2020 6:48 AM, Ed G wrote:
When setting the power output of my K3 to give varying amounts of drive to
the KPA1500, I am seeing SWR as displayed on the KPA1500 changing by a
significant amount depending on the drive level.
Look for something breaking down in your antenna system or bet
On 6/14/2020 2:04 PM, oz6...@qsl.net wrote:
The only way I made it acceptable for him and others was dropping my
Compression and Mic gain to much lower values, that is 10 for each.
First, the numbers on the readout are MEANINGLESS. What matters is the
indicated compression on the bar graph on
On 6/13/2020 9:13 AM, Phil Kane wrote:
No EMI that I can
detect by on-off testing (there's plenty from other nearby sources).
Phil,
Did you unplug the wall wart (or the monitor) from the wall? That PSU,
whether external or built into the monitor, usually a major noise source.
ALWAYS, when
On 6/12/2020 7:02 AM, Robert G Strickland via Elecraft wrote:
Any insightful hints?
I've had to strip a lot of enameled wire in the course of my common mode
choke projects. Like you, I don't have the heat resources, and I don't
know if the wire I'm stripping has the characteristic of the enam
On 6/12/2020 3:23 AM, E.H. Russell wrote:
Thanks for the scope shot and info. I compared the waveform to the QST K3S
review, which seems to show a little over 10ms before RF appears. Is this
because they used different settings?
I repeat my advice that keying characteristics must be evaluated
On 6/9/2020 8:37 PM, Frank C Richards wrote:
I also agree that all structures should be bonded to the counterpoise
system.
Some of the boat builders(Hatteras ,Bertram .etc) would put copper screen
into
the fiberglass layups of the flying bridge decks and roofs with a stud
connected
to it so that
On 6/9/2020 3:54 PM, Barry wrote:
EE is an art and not science
That is NOT even slightly true. ART did not put us on the moon or build
the Mars rovers. Engineering is the thoughtful application of scientific
principles and knowledge to solve practical problems. Without science as
a base, it'
On 6/9/2020 3:13 PM, Barry wrote:
I counsel inverted Vs as they are ground independent.
Not really -- the earth in the near field is lossy (including fresh
water) and in the reflection from earth in the far field combines with
the direct signal to produce the vertical pattern. Almost any hori
Correcting Joe's typo, Mic audio is present between pins 2 and 3, NOT
between 2 and 1.
73, Jim K9YC
On 6/9/2020 2:54 PM, Joe Subich, W4TV wrote:
> So which is correct?
They are electrically equivalent.
Pin 2 of the XLR connection is Mic+
Pin 3 of the XLR connection is Mic-
Pin 1 of the XLR
On 6/9/2020 1:21 PM, g...@gmx.net wrote:
anywhere then you either need a long vertical plus good ground as
mentioned already
WRONG. An end-fed wire needs a COUNTERPOISE, not a connection to mother
earth. A counterpoise is a low resistance conductor that provides a
return for the current and t
On 6/9/2020 11:07 AM, Al Lorona wrote:
The reduction in the sideband levels (what some folks here called 'clicks'...
not sure that's a good name for this) varies depending on where you measure it,
but in general the sidebands will drop anywhere from 0 to 12 dB-- sometimes
less, sometimes more-
On 6/8/2020 1:47 PM, Peter Kaletsch wrote:
But how do I get a reasonably effective earth?
You don't need an "earth," you need a counterpoise.
VE0JS, who has sailed around the world four times on a 37-ft sail boat,
loads the backstay against a sintered bronze plate in the water. I
suggest that
On 6/8/2020 9:21 AM, Richard Stutsman wrote:
I for one would like to have some control over the rise/fall times.
You want the cleanest (narrowest) of CW signals when operating on a crowded
band or in a contest - unless you're a rare DX station. Most of my
operations are 22wpm rag chews on very u
I spent a summer during my college years silver-soldering 120 radials to
ground screens for each of the 4-tower array of WSAZ.
73, Jim K9YC
On 6/5/2020 2:41 PM, Roger Steyaert wrote:
that is why I high temperature silver soldered the wire and ground rods
together. Not normal soft solder but th
Brain cramp -- I meant KF7P.
73, Jim K9YC
On 6/5/2020 4:06 PM, Dave Cole wrote:
Huh? I don't sell them...
73, and thanks,
Dave (NK7Z)
https://www.nk7z.net
ARRL Volunteer Examiner
ARRL Technical Specialist
ARRL Asst. Director, NW Division, Technical Resources
On 6/5/20 10:53 AM, Jim
Neat!
Jim
On 6/5/2020 11:13 AM, donov...@starpower.net wrote:
Hey Jim,
If you think Cad-Welding a ground rod is fun to watch, take a look at
thermite welding of railroad tracks:
www.youtube.com/watch?v=5uxsFglz2ig
__
Elecraft mai
On 6/5/2020 10:23 AM, Chris Waldrup wrote:
This is probably overkill for QRP but I wanted to do it right like we used to
do in broadcast.
The primary purpose of grounding bonding has NOTHING to do with radio --
it's for LIGHTNNG PROTECTION!
On 6/5/2020 10:46 AM, Walter Underwood wrote:
> C
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