Mike Underhill G3LHZ had some good ideas but his ideas that the
theoretical loop equations were not valid were totally wrong. When I
was active on 136kHz some years ago I used a large vertical loop and
got reasonable results - in a QTH where I was severely restricted in
what I could use on thos
> I just can't seem to decide between the KX1 and the K1. And, no, I can't
buy both.
I went through the same motions. Many times. I'm about to go through it
again.
In a nutshell, IME:
K1
- analog soul & sound not found in 99% of radios. Can't explain it.
- insanely quiet receiver
- Simple plat
While I hang around the recovering from my back surgery and a nasty case
of pneumonia, I've run out of projects that require melting solder.
This of course means its time to order another kit. After spending
hours (I have lots of time) researching kits, I, naturally, arrived back
at Elecraft
> Could the electronics of the USB device be blown as the cable
> acts like an antenna? I don't want to make a stink over
> this...just want to know peoples experience.
If you can induce more than 10V P-P of RF on the cable between
the computer and the USB to serial adapter, it is theoretical
Well, got home and what do you know. All is well again. I fiddled around
with the mic selector in the firmware, switching it from line-in to FPL then
back to line-in and everything went back to the way it was last night.
Okey dokey. I can live with that.
73 de James
--
73 de James K2QI
_
The USB to serial port stopped working for goodwhen I was on 80 meters.
The way I new is
that N1MM Logger lost connection and could not reattach to the K3. I
tried the K3 Utility...nada. This only happened on 80 meters. Yes, I
have a good RF ground. Coax feed to the dipole. Tuner. etc.
For Sale: Refurbished or NOS Weller soldering irons
These Weller irons must be used with the appropriate Weller base unit.
Consult the BAMA web site for Weller manuals for additional details, or feel
free to ask me.
EC1201A with ETA tip and new silicon cord (ESD black) -- $70
TC-201P with PTA7 ti
Thanks for the replies, all.
I'm using a laptop PC with 3 USB ports. With mouse, keyboard, harddisks
and other devices I am using 3 USB hubs
Plugging the cable from the K3 directly into a USB port on the PC does
not remove the noise. The hub doesn't have a PSU, but there are a lot of
small swit
> On Tue, Aug 4, 2009 at 6:38 AM, Svend Spanget
> wrote:
>
> > I recently discovered the source of a very annoying noise in my K3.
> > When unplugging the USB cable from my USB hub the noise in the
> > receiver disappears. How do I get rid of this? I am using HRD, so a
> > connection to my P
I went to one of those lectures by Prof Mike Underhill (G3L??) in front of his
IEE peers who did not receive his wisdom too readily. It seemed like a one-man
campaign. In essence he postulated that a mag loop was more like a short
folded dipole and he showed why. The usual calculated losses w
Guess what Lee, I have blown 3 serial ports. Not sure why you would think
high RF will blow a USB to serial converter and not a serial port. FYI I
built a cable using CAT 5 cable as suggested on this site and have not had a
problem since.
Frank - W4NHJ
- Original Message -
From: "Le
I solved this problem by programming the per-band memories (M1 - M4 on
the front panel) with frequencies and modes in each band. M1 is CW
mode near the low end of the CW sub-band, M2 is CW near the high end
of the CW sub-band, M3 for the low end of the phone segment, and M4
for the high en
No, it didn't go black... it went the polar opposite; as if I was looking at
a single 3khz wide signal!
I had to switch modes, then back to DATA-A for it the waterfall to go back
to normal.
Weird huh?
Also, not so much the level of operating ALC that I'm worrying about, but
why the change in how
K2QI wrote:
>
> Hello Elecrafters,
>
> Quick question - what could have changed in this scenario?
>
> Using K3 in DATA-A mode; audio from DM780 going into K3 via rear audio
> input
> connector. The K3's input was set to LINE IN in the main menu. Volume
> from
> the PC was set to 50%, and as
I like to use my K3 for general coverage listening from time to time. It is a
great performer for this purpose.
My only complaint is that after I tune around for awhile and then go back to
my Ham band memories they are all screwed up with out of band settings and
AM mode.
It would be nice to may
I sure would like it...
I swap headphones now, only use the Proset for SSB, prefer the Sony
Walkman's for CW. Less fatigue with those light little things, but no way to
hand a boom mic from 'em hihi
I use both the front and rear connectors for headphones. The Heil is plugged
in the front, the So
>> So, what have people experienced with their USB Converters when running
the big amp?
I use a Digi Edgeport 8-spigot converter rather than the 1-port 'consumer'
grade USB-serial converters many hams use.
I got mine used surplus and paid less per port than many single-port
converter 'dongles' co
Thanks Don:
On 8/4/2009 11:08:52 AM, Don Wilhelm (w3...@embarqmail.com) wrote:
> Jerry,
>
> No problem at all. Just take a look at the XV series Owner's Manual -
> on page 11 you will see "Figure 7. K2 Extended Control Cabling Hookup
> Diagram". Connect the KPA100/KAT100 combo package as shown
During NAQP CW this weekend, I noticed a thump/click sound in my right
headphone when using AFX. I tried a different (new) set of phones thinking
maybe I had a bad diaphragm in the old set, but same sound. It doesn't occur
in normal mono mode.
Too, the headphones feed is from the rear panel, not
We also have an excellent article on Magnetic Loops on our elecraft Tech
notes page (about half way down the page).
http://www.elecraft.com/TechNotes/tech_notes.htm
73, Eric WA6HHQ
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Jerry,
No problem at all. Just take a look at the XV series Owner's Manual -
on page 11 you will see "Figure 7. K2 Extended Control Cabling Hookup
Diagram". Connect the KPA100/KAT100 combo package as shown for the
KAT100 shown in that figure.
73,
Don W3FPR
n0jrn wrote:
> Hey gang:
>
> I hav
Well, to be honest there are still several features advertised that to this
date still haven't been implemented. For example:
1. Synchronous AM detection
2. Temperature controlled oscillator calibration
Those are just two features missing that I can recall of the top of my head.
Plus there are
On Thu, 30 Jul 2009 09:30:31 -0700 (PDT)
Wes Stewart wrote:
>
> Simple, now that most of the issues surrounding the K3 have been addressed
> and "FIXED"
>
> Which ones? None that I've demonstrated to them have been.
>
> Wes
**
Hey gang:
I have my KAT100 and KPA100 in a separate EC2 enclosure.
I considering adding the XV50 to this package.
Has anyone done this and can you tell me if all units can be interfaced at
the same time
Just curious !
Thanks and 73: JerryN0JRN
_
You've found the noise source; now find a way to eliminate or replace it.
Does your USB hub use a wall-wart power supply? Some of these are noisy.
Maybe you have another USB port on your computer to which you can connect
the KUSB directly, bypassing the hub? Also, some USB hubs work OK with the
PS
> I recently discovered the source of a very annoying noise in my K3. When
> unplugging the USB cable from my USB hub the noise in the receiver
> disappears.
I had posted on this topic a couple weeks ago. I didn't discover my own
noise problem until I was looking at the noise floor with a SDR-IQ
Hi All,
A friend of mine here locally once did quite a bit of modeling for loops.
He determined that setting up a loop vertically was easier than he expected.
Horizontal loops are difficult here in the desert. Anyway, his modeling
disclosed that the horizontal height of a vertical loop (full w
Clearly there's a lot of interest in small transmitting loop antennas, so
here are some links I've collected over the past several years that are
still good detailing the efforts of several Hams (I checked them to make
sure they still work ;-):
Harry, SM0VPO, has several interesting designs includ
Lee,
Everything may be grounded, but that is a safety ground, and it
certainly cannot be relied on for an RF ground. It sounds like things
in your shack are hot with RF. The place to correct that is at the
antennas - the feedline should not be carrying common mode RF into the
shack - i.e. al
Some random thoughts:
Unless the "contest legal limit" is different from the regular legal limit
(always a possibility I guess) I haven't had any problems.
How did you determine that the USB-serial converter was damaged by RF and not
something else?
If you have enough RF in the shack to be blo
Svend, have you tried isolating the K3 and USB hub by using chokes on all of
the K3's inputs and outputs and the USB hub's outputs plus power adaptor
input?
73 de James K2QI
On Tue, Aug 4, 2009 at 6:38 AM, Svend Spanget wrote:
> I recently discovered the source of a very annoying noise in my K3.
Hello Elecrafters,
Quick question - what could have changed in this scenario?
Using K3 in DATA-A mode; audio from DM780 going into K3 via rear audio input
connector. The K3's input was set to LINE IN in the main menu. Volume from
the PC was set to 50%, and as such a PSK-31 signal was registerin
Ok guys
Everything is groundedbut when you are pushing legal limit power in a
contest, I have blown up my USB to Serial Converter. It just doesn't work
after the RF does its magic to it. That is why I went to a serial connection.
So, what have people experienced with their USB Conver
I recently discovered the source of a very annoying noise in my K3. When
unplugging the USB cable from my USB hub the noise in the receiver
disappears.
How do I get rid of this? I am using HRD, so a connection to my PC is
really needed...
73's Svend, OZ7UV
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Gary Hinson wrote:
>
> By the way, I don't know if it's the same with magnetic loops but the
> fullwave loops radiate mostly "broadside" to the plane of the loop.
> If the loop is vertically oriented (e.g hanging between two trees),
> the polarization of the signal is determined by whether the
I think I saw the article for that one myself, or at least a similar one by
somebody else. I guess very low profile would be the major advantage of one
for mobiling, but almost anything else would be a better choice for any other
application.
I actually built a DDRR about 40 years ago (for 20
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