On 6/19/2024 9:38 AM, Dean Wood wrote:
It's fun to see where Elecraft gear is used.
Since about 2010, our team, usually signing W6BX, sometimes KU6W, has
always been an all Elecraft team, with two or three stations, each K3,
P3/SVGA, KPA500, KAT500.
73, Jim K9YC
On 6/21/2024 11:24 AM, Oscar Castillo wrote:
hello everyone,
, the coaxial that carries the RF from the board to the tunner was loose
(the ground part of the coax was broken), in the physical inspection
everything looks fine, no "pop" was heard, There was no smoke anywhere
or a burning smell
On 7/3/2024 8:14 PM, Frank Stein via Elecraft wrote:
Any thoughts on what might cause this? And how to fix it?
Are you turning off the radio with the front panel button, or are you
turning off the power supply? Elecraft radios save their setting when
they are turned off by that switch. If no
On 7/6/2024 8:16 AM, Dave Sublette wrote:
I want to know if the K4D will seamlessly plug into my setup,
using the same cables I am now using with my K3s, P3 driving my KPA500 and
KAT500?
Yes. You will need to study the manual for menu settings, interface to
logging software if you're using tha
On 7/6/2024 11:55 AM, Rick Bates, NK7I wrote:
Except HRD didn't/doesn't fully support the K3, for about the last 10-12
years (the last major firmware update).
I liked HRD when it was Simon Brown's. although I never used it as a
logger, because I had been using DXKeeper for years and loved it.
On 7/6/2024 12:28 PM, Rick Bates, NK7I wrote:
It's no wonder I still prefer twisting knobs and mashing buttons, hi
hi. Simple just ROCKS!
The only parts of DXLab that I use (and I've used it since getting back
on the air in 2003), are DXkeeper and Spot Collector. 99% of my
operation is conte
On 7/6/2024 2:33 PM, Augie "Gus" Hansen wrote:
If you're not using the Commander component of the suite, what do you
use for rig control?
I only use rig control when contesting or with WSJT-X. N1MM+ does rig
control for contesting, WSJT-X for those modes, both do it directly. I
don't run both
On 7/26/2024 2:21 PM, Pete Smith N4ZR wrote:
I wonder if anyone else has seen this? when I transmit on 30M, I turn
my K-3's power down so as to only put out 200 watts.
I think that means you need to re-do power calibration. I do the same on
both 60M and 30M.
73, Jim K9YC
___
On 8/4/2024 9:46 AM, Walter Underwood wrote:
> It might be good enough, but it won’t be as good as a K3. The K3 is a
> superhet, so the design is naturally more resistant to off frequency
> signals when compared to a direct conversion receiver.
And the K3 includes bandpass filters for each band (
On 8/7/2024 8:15 AM, Peter Drexel wrote:
Any suggestions?
99.99% of RCA cables are crap, sold to the hi-fi world. Common problems
are tiny conductors, "shield" is a wire, not a shield, connectors are
cheap, out of spec, dissimilar metals, etc. Center pin may be too small
to make contact, etc
Hi Dick,
The 4O3A 2x8 switches are quite good, have excellent isolation. The more
expensive one has even better isolation and probably has a band decoder.
The switching inputs can be configured multiple ways with DIP switches.
I don't recall details, because my band decoders are built into my
On 9/4/2024 1:49 PM, ken.k...@gmail.com wrote:
I'm not sure where the voltage displayed on the K3 is sampled, but I have
found it to be consistently about a volt lower than the voltage present at
the Power Pole connector on the back of the radio,
There is a protection diode in series with the p
ce (and to provide a higher power
rating without saturation or overheating).
Jim Brown K9YC
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both for SSB and CW, and you do NOT have
to remove the DSP to disable them.
On the other hand, once I have aligned the filters, I like to turn the DSP
filters back on and look at the combined response of the crystal filters and
the DSP filters when setting the DSP filters.
he shack. A cold breeze
coming in that window will cool the radio enough to set off this problem
(that is, to cause the radio to go into over-temperature protection and stop
transmitting). I've made Wayne aware that this is what sets off this
problem. And yes, resetting C
er that dB is 20 log (V2/V1) and 10 log (P2/P1). So
the ER4S and ER4P have the same power sensitivity.
Jim Brown K9YC
Audio Systems Group, Inc.
Chicago
http://audiosystemsgroup.com
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You are confusing DC resistance with impedance. The impedance of a transducer
(loudspeaker, microphone, headphones) is a combination of the dc resistance
of the voice coil, the motional impedances, and a resistance that corresponds
to the power converted to sound. Thus, those headphones that look l
On Wed, 16 Jun 2004 11:39:57 +0100, [EMAIL PROTECTED] wrote:
>However, the real question is should I
>"visualise" the letters (like imagining a typewriter with my eyes shut) or
>just sort of recognise the letters in an abstract sort of way leaving the
>brain to piece them together in the backgroun
sensitivity, and anothe 6 dB lower because it's an 8 ohm loudspeaker. That's
only 70 dBSPL, which is only marginally loud enough in a noisy room (or if
you have a lot of hearing loss).
Jim Brown K9YC
http://audiosystemsgroup.com
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my talkie by at least 10 dB (3x the distance), and
extending
the life of my battery by letting me run QRP to work shorter distances.
Jim Brown K9YC
On Fri, 18 Jun 2004 15:51:05 -0700, Leigh L. Klotz, Jr. wrote:
>I just bought 20-023 BNC window clip-on miunt with 6ft of RG-174 for
>$1.97 on
Are you talking about keying from WriteLog on the DTR line? If so, you need a
simple NPN transistor as an inverter between the computer and the K2 key jack.
I've built several using 2N4123's that I happen to have in my junk box, but any
small signal NPN will do. Collector to the key line, emitt
On Wed, 23 Jun 2004 07:55:23 -0600, Indy wrote:
>Our best wishes for a great time and many QSO's to all who will be enjoying
>field day this weekend.
I'll be pounding brass with my K2/100 and KAT100 and signing K9OR with the
North Shore Radio Club (Chicago) 3A effort in a village park at about 6
where the K2 was
at a greater distance.
Jim Brown K9YC
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ers, and
clamp-ons.
I believe that most of the ferrite toroids sold by Amidon and Palomar are
Fair-Rite
#43. Some are #61. I don't know of any retail vendors for #78 or #31 materials,
but there are many such products in the Fair-Rite catalog. I've been testing a
bunch of them
It is correct on my KPA100.
Jim K9YC
On Fri, 25 Jun 2004 23:26:13 -0700, wayne burdick wrote:
>We were very careful to ensure that the KPA100's APP connectors matched
>the emerging standard orientation. I believe it is correct, but I'll
>review it again just to be certain.
_
One of the two CW rigs at K9OR was my K2/100 with KAT100. That rig made 1072
QSO's.
We ran 100 watts for all of the contest, with the exception of the time it took
to make the five
QRP QSO's needed to qualify for the "alternative power" bonus. To do this, we
simply
disconnected the rig from t
On Mon, 28 Jun 2004 22:54:28 -0400, Bill Tippett wrote:
>It also seemed to me that the CW bands were surprisingly empty. Maybe we're
>beginning to see the effects of waning CW interest in the general ham
>population.
>It also seemed to me that I heard many QRP stations with good signals (e.g.
>N
On Mon, 28 Jun 2004 16:16:52 -0400, Jerry wrote:
>I was wondering what kind of antenna you were running?
The CW stations used all dipoles, average height about 30-35 ft. The phone
station had
a dipole for 80 and 40, and a monster Delta beam for 20/15/10. The SSB station
made
786 contacts, whi
No, I didn't miss it at all. I found your observations to be completely in line
with my
expectations. For most contests, I have to operate as if I were QRP -- no beam,
100
watts to compromise wire antennas on a city lot (and often a high noise level).
That
puts me roughly 17 dB below the guy
On Tue, 29 Jun 2004 08:08:37 -0700, wayne burdick wrote:
>What I usually do is put up at least two antennas
>(typically, orthogonal long wires that favor N-S and E-W). You can
>connect both to the KAT2 or KAT100 at the same time, since both ATUs
>have dual antenna jacks. You can then quickly te
On Tue, 29 Jun 2004 08:08:37 -0700, wayne burdick wrote:
>What I usually do is put up at least two antennas
>(typically, orthogonal long wires that favor N-S and E-W). You can
>connect both to the KAT2 or KAT100 at the same time, since both ATUs
>have dual antenna jacks. You can then quickly te
ld be
required! Modern audio
gear has a low (50-100 ohm) output impedance and a high (10K typical) input
impedance. Mic input
stages have a much lower input impedance (1K typical) to maximize signal to
noise.
Jim Brown K9YC
http:audiosystemsgroup.com
On Thu, 1 Jul 2004 19:44:45 EDT, [EM
On Fri, 02 Jul 2004 06:29:33 -0400, Mike S wrote:
>At 11:32 PM 7/1/2004, Jim Brown wrote...
>>BTW -- forget all that ancient stuff about 600 ohms. Pro audio hasn't used a
>>600 ohm
reference for at
>>least four decades.
>
>That may perhaps be true f
uncompressed audio waveform. Both ways of thinking/talking about it are
important, but you absolutely must understand the difference.
Jim Brown K9YC
http://audiosystemsgroup.com
--Original Message Text---
From: [EMAIL PROTECTED]
Date: Fri, 2 Jul 2004 07:30:49 EDT
600 ohms is still very much the
ced at something on the order
of a
foot between insulators a transmission line is simply wrong.
Jim Brown
Audio Systems Group, Inc.
Chicago
http://audiosystemsgroup.com
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You must be a su
are rated for 3 dB less power
on
100% duty cycle modes (RTTY, PSK, etc.) to prevent excessive dissipation.
Jim Brown K9YC
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better specs than the original, thanks to the greater
precision of modern manufacturing and computer-aided design).
This thread is, indeed, rather far off topic, and this will be my last post to
the
list on it. My apologies to any who might have been bothered
countries on
80 and 95 on 40 with 100 watts in about 9 months. It also is pretty good in
some
directions on 30 meters. The 160/80/40 design is a scaled-up version of the
80/40
design for 160/80, with a parallel wire dipole for 40. It is installed at W6BX,
S post-Reagan (small government, small FCC, small FCC budget, small FCC
EMC regs).
Jim Brown K9YC
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On Wed, 07 Jul 2004 11:32:48 +0200, Geert Jan de Groot wrote:
>I never had a problem
I participate in two email lists devoted to folks who work in the pro audio
world.
There are more than a few stories of valuable, but harmless, tools being
confiscated from luggage that was subject to securi
On Wed, 7 Jul 2004 09:12:27 +0100, JA Crux wrote:
>Interesting. It varies from place to place. I took my K2 to ZS6, on 12/11.
Yes. I took my FT100D through two airports last month (my K2/100 stays safe at
home).
No problems with security either place. At O'Hare, an inspector asked what it
was
On Wed, 07 Jul 2004 13:40:03 -0500, Timothy A. Raymer wrote:
>http://www.elecraft.com/k2_remote.htm
>
>There are links there to several programs that control the K2.
Ham Radio Deluxe (link on the page above) is VERY nice, and it works with a lot
of other rigs
too. The accompanying PSK31 and Map
ilar interests are likely to have a similar problem and
be
interested in the answer. Another good reason for posting to the list is that
public
answers get the benefit of peer review, while private replies don't.
Jim Brown K9YC
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line.
Does this make sense?
My rig also includes a KPA, but I don't think I need it. It has a key output to
drive power
amps, but there is no doc on it. Is it also a pre-delay signal (that is, 10-20
ms before
transmit)? What is its logi
I'm looking for a manual for this unit.
Jim K9YC
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On Sun, 11 Jul 2004 10:54:47 -0400, Brent Sutphin WB4X wrote:
>What are your feelings on "Log Book of the World" LoTW?
I did my first upload three weeks ago, and found it painless once I took the
time to set it up.
It's great to go online and receive more than 100 confirmations without ever
se
a few dB in the overall BG noise level on 160. I didn't compare it on other
bands. Just to make sure it wasn't loss in the filter, I ran a response on the
filter with a calibrated generator and scope. It wasn't.
Jim Brown K9YC
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W8JI designed the unit and has written a very detailed alignment procedure that
is on his
website. A search on W8JI and MFJ259B will turn up a link.
As coincidence would have it, I found a 259B at a hamfest over the weekend and
plan to
use his instructions myself. They look good, but I haven'
On Fri, 16 Jul 2004 13:04:07 -0400, Bob Schreibmaier wrote:
>Personally, I've always liked the Rolling Stones
Without question, Count Basie, especially the one with Lester Young. In second
place is the mid-50's Kenton band.
Ji
with the 2.4" OD toroids commonly used
for baluns.
The limit of measurement for the MFJ-259B is 650 ohms, and for the CIA-HF is
1K ohms. Many multi-turn chokes will result in impedances well above this.
Jim Brown K9YC
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On Thu, 22 Jul 2004 13:18:37 -0700, Howard W. Ashcraft wrote:
>Is the KDSP2 less effective for reducing unwanted noise on CW
No, the KDSP2 provides both a very effective variable bandwidth audio filter
(wonderful for both CW and SSB), and a very effective dynamic noise reducer
(also
very effe
odern
times. The stuff he said in the 20's have been said by in their own way by the
likes of Lenny Bruce, Bill Cosby, or Jay Leno in their night club act -- but
not
on televison!.
Jim Brown K9YC
On Sun, 25 Jul 2004 11:24:48 -0500, [EMAIL PROTECTED] wrote:
>Humorists do not
On Tue, 27 Jul 2004 09:35:15 EDT, [EMAIL PROTECTED] wrote:
>I'm seriously thinking about buying as 5-band Hustler to ground mount behind
>my shack. I've been told that my signal to noise ratio would improve
>considerab
Congratulations on your upgrade and getting on the air. I seriously doubt t
to be poor soil conductivity at the top of this
mountain.
At a riverside or beach location I might have been more inclined to use a
traditional vertical.
One of the other obvious advantages of a remote site is the absence of local
noise.
On Wed, 28 Jul 2004 07:10:27 -0400, Parker Buckley wrote:
>I believe the ground system is key to the whole thing.the ground mounted
>vertical is simply quieter than elevated ones.
You may be right, but I suspect that the location of the antenna with respect
to the
noise is more likely the
ials all the
same
length -- even adding only a single radial for the lower frequency can help
loading on
that band. The general rule with radials and ground systems is that more is
better.
73,
Jim Brown K9YC
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nt functions. But from a
safety
(and building code) perspective, ALL of these functional grounds MUST be
bonded together. And HOW they are bonded together can make a huge
difference when something goes wrong (like lightning).
Jim Brown K9YC
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On Mon, 2 Aug 2004 22:41:37 -, Robert McGwier wrote:
>You cannot tell if it is a personal message or a group message easily.
Easy solution. Set the filter to look for [Elecraft] in the Subject or Header
(that is, include the brackets). My email software has been set that way
for as long as
On Mon, 02 Aug 2004 20:46:17 -0500, John Rader wrote:
>125' EFHWA strung between.
These abbreviations drive me nuts! What the hell is an EFHWA?
Jim K9YC
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Yes, I am currently working the WAE contest and hearing a fair number of T6
signals. Dunno if it is "on purpose" or accidental. Some contesters/DXers seem
to want their signal to stand out, even if their tone stinks. I think they're
misguided,
but what do
On Sun, 15 Aug 2004 08:06:33 -0600, Indy wrote:
>this tone question may not be the transmitter in many cases.
I heard on local stations that I am sure were ground wave and strong. I also
heard it on skip that was stable and VERY unlikely to have been
affected by auroral activity.
Jim
_
On Sun, 15 Aug 2004 19:25:18 -0700 (PDT), Art-W6KY wrote:
>I had just worked a DL in the WAE contest with my K1-2 on 14052.
My K2 at 5 watts into dipoles made 158 Q's in 27 EU countries. Only worked
about 7 hours.
Could have done a lot better if there had been more EU stations and contries
ac
chtone decoder.
To interface Echolink to a a radio you need audio going both ways between
the radio and sound card and a method of knowing when to transmit.
Echolink has built-in VOX, but it can also take an electrical connection from
the receiver that indicates the presence of signal and/or squelch
ems. See the tutorial for details.
http://audiosystemsgroup.com/RFI-Ham.pdf
73,
Jim Brown K9YC
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his antenna system very
seriously. One of the good reasons for running power on 160 is to
get over the high noise levels. I've got an S1 noise level most of
the time. It's not uncommon for me to read a guy 579, but he can't
read me, b
s hear a carrier on
1810, often on 1820, 1830, and 1840. Most of the time they're down
around S3, but not always. And the guys around Fresno are struggling
with an intermod product that used to be 30 dB over 9, but last I
heard, is now down around S6.
73,
J
antenna
works even better here. :)
73,
Jim Brown K9YC
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to California, and am not back on the air on
VHF yet.
The XV144 and XV220 are essentially the same unit, but with the RF
design optimized for different bands.
73,
Jim Brown K9YC
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You mu
tret mics
(because they need a bit of current from the radio to run the
capsule and it's FET output stage).
73,
Jim Brown K9YC
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supplies.
It's a very effective "poor man's UPS." You simply need to to size the
supply so that it doesn't overcharge the battery.
73,
Jim Brown K9YC
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ters and
can assist you with licensing issues.
Jim Brown K9YC
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the
harmonically related ones, for the reasons noted.
73,
Jim Brown K9YC
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also allows the cable shield to RECEIVE
RF from your transmitting antenna (also known as RF feedback, or "RF in
the shack").
73,
Jim Brown K9YC
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art, one
pair for each signal circuit. No changes to the wiring
between a KPA100 and a K2. Details on my website for the
serial connection.
http://audiosystemsgroup.com/RFI-Ham.pdf
73,
Jim Brown K9YC
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kes. These folks get paid VERY well. I used to cooperate with
them until I figured this out. Now, I refuse to talk to them unless
I'm also getting paid VERY well.
There's a broad sample of my writing at
http://audiosystemsgroup.com/publish
Jim Brown K9YC
_
coaxial choke with close spaced turns and one with
wide spaced turns is HUGE.
For example, five CLOSE-spaced turns of RG8 through five #31 toroids
will cause a resonance (and peak performance) in the 2-3 MHz range,
while WIDE-spaced turns will yield excellent performance all the wa
e using a calibrated
generator, you will find that it's close to 6dB/S-unit around S9, but
close to 3 dB/S-unit when you get below S6 or S7. And I'm not talking
about "junk" receivers -- I've done this with some very good radios,
like TS850's and FT1000MP's. No, I haven
, you NEED this update.
Enjoy!
73,
Jim Brown K9YC
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On Wed, 25 Jul 2007 20:08:36 -0700, Bob Nielsen wrote:
>Perhaps a URL would be helpful
Sorry -- brain cramp at the end of a long day.
http://audiosystemsgroup.com/RFI-Ham.pdf
73,
Jim
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You
rejecting
RFI, yet power cords for ham gear have traditionally used parallel
conductors. The same is true for loudspeaker cables. That's two more
standards worth changing.
73,
Jim Brown K9YC
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Is this guy serious? I know hams are cheap, but this takes the
cake! Next he's gonna want dikes, needlenose, a magnifier, and a
soldering iron!
73,
Jim Brown K9YC
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You must
On Tue, 31 Jul 2007 19:09:32 -0700 (PDT), Marty Young wrote:
>Yes, I was serious. If you disagree, rather than
>insult me, why not make an intelligent argument to the
>contrary? Many others did.
OK, I will. I've been a ham for
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That
didn't prevent him from soldering, or from climbing on his
roof. So that's my opinion, and I'm sticking to it.
73,
Jim Brown K9YC
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scussion of common mode chokes.
http://audiosystemsgroup.com/RFI-Ham.pdf
73,
Jim Brown K9YC
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anding applications. At HF, VHF, and below, the ONLY things that
matters are that it fits the cable, it mates with other connectors, is
reasonably easy to install, and is mechanically reliable.
73,
Jim Brown K9YC
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On Thu, 2 Aug 2007 09:35:19 -0700 (PDT), Chris Kantarjiev wrote:
>2N4124;
>the big difference is that the 4124 is limited to 200mA collector
current.
This is a rather non-critical part. Anything that's close works fine.
I've built at least a half dozen of them for four different radios with
a
end a
bit, which prevents "pops" from activating the compressor, making the
compressor work better.
>Having said that it is pretty good as CW contest rig and is almost on the
>par with my main radio.
Yep!
Jim Brown K9YC
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is a termination!
73,
Jim Brown K9YC
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and the ANTENNAS
connected to the router (the Ethernet cables and the power cable)!
73,
Jim Brown K9YC
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hokes on the wires to prevent common mode
current. Even when you've done that effectively, you may still hear
radiation from the internal wiring of Ethernet devices that are badly
shielded and have large internal ground loops.
73,
Jim Brown K9YC
t email from W2DU, who had just read my tutorial and liked
it a lot. If you haven't been there, his website is well worth the visit. It
includes several chapters from his book "Reflections." They are excellent.
73,
Jim Brown K9YC
_
On Thu, 16 Aug 2007 12:14:06 -0400, Jozef Hand-Boniakowski wrote:
> and RFI from the dog fence
There is an RFI reflector on contesting.com. Some very smart folks
there, very good signal to noise ratio.
Jim K9YC
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y of doing that very well.
73,
Jim Brown K9YC
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radials, two reversible Beverages, and a noise
level that rarely hits S3.
73,
Jim Brown K9YC
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On Mon, 3 Sep 2007 23:25:44 -0400, Dave Van Wallaghen wrote:
>Now to see if I can get a room with a window that opens :-)
You'll have the best luck on this in an old fashioned hotel as
opposed to a newer one.
73,
Jim K9YC
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have an output impedance lower than about 100 ohms,
should have a pronounced response peak around 3 kHz, and should be
rolled off around 250-400 Hz on the low end.
73,
Jim Brown K9YC
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You m
med by winding the coax
around suitable ferrite cores.
http://audiosystemsgroup.com/RFI-Ham.pdf
See the section on transmitting chokes and the "Choke Cookbook."
73,
Jim Brown K9YC
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On Fri, 28 Sep 2007 05:57:34 -0700, Darwin, Keith wrote:
>Those are my thoughts. What are yours?
The best band for DXing is the one on which you can put up the
most effective antennas compared to other hams who want to work
that DX. 30M is a very nice band because of the 200W power
limitation
s is very good advice.
Jim Brown K9YC
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H
lts
in very low resitivity and better reflectivity in the soil. It is
the combination of the reflection(s) with the direct wave from the
antenna that determine the vertical directivity of the antenna
system. These two mechanisms are the significance of RF ground.
Jim B
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