Guys,
Thanks for all the replies to my original question below. Had a closer look
at what I have and the 'cleaner' is the D100L (Caig). I got them both from a
HiFi supplier in the UK in 2ml squeeze tubes...about £5 a throw but it goes
a long way!
May have mentioned this before but I use those
I put my KPA500 #576 (built last Mon/Tue) through a workout during the past
weekend contest. Worked great.
No clicks that I could hear of course I was using headphones. I could just
detect a very subtle change in fan speed during runs. Monitored the temp
during runs at 500 watts (28 watts
I have sent my recording in already. I heard some in my CW
pileups. Some were zero beat issues but not all.
-lu-W4LT-
Message: 6
Date: Mon, 12 Dec 2011 10:43:04 -0700
From: David Gilbert xda...@cis-broadband.com
Subject: [Elecraft] K3 blur was a no-show during ARRL 10m
We use Deoxit here at work at Xerox where I am in the service area. When
using deoxit over the years it has been found to be excellent but after some
years after its application issues have arisen mostly due to over
application. Some time ago, to solve this we switched from the 100%
solution to
Group , This is a relist of a K2 for sale posted 6 weeks ago.
K2 serial # 4869 Built and used by a non smoker. Cabinet is at least a 9 out of
10. Aligned with spectrogram.
Includes the following options :
KSB2 SSB adapter
KDSP2 DSP filter
KNB2 Noise blanker
KIO2 AUX module
KAT2 Antenna tuner
If there is not a felt washer between the VFO knob and the
panel, then that is your problem. I have never experienced
the noise that you describe after operating about 6
different K3s.
73, Ken K3IU
On 12/13/2011 11:03 AM, Natan Huffman
Hello All,
Last Friday I took delivery of a new K3 along with a P3 and lots of
accessories including Fred Cady's book on the K3. Only problem to date is
noisy VFO knobs. The technique to lessen drag does decrease or eliminate
the noise which sounds like fingernails dragged across a chalk board
That's something entirely new, Natan, and not normal for a K3. The pad
between the knob and the front panel should be nothing but a soft felt
washer, virtually noiseless as the knob turns.
Is there anything else there?
If not, recommend that you drop an e-mail to K3support (at) Elecraft (dot)
My newly acquired K3 makes this VFO noise as well for the VFO A knob. It is
only annoying when I have the headphones off.
Keith
Sent from my iPhone please excuse typos
On Dec 13, 2011, at 8:28 AM, Ron D'Eau Claire r...@cobi.biz wrote:
That's something entirely new, Natan, and not normal for
I don't think there are any 1/4 4-40 flat head screws in the K3
(either) ... ? There are 1/4 pan heads, but flat heads are 3/16 or
5/16 (IIRC)
~iain / N6ML
On Mon, Dec 12, 2011 at 9:04 PM, n...@widomaker.com n...@widomaker.com wrote:
How about spares from the K3 kit?
...bc. nr4c
Sent
Is there felt behind the knobs?73, Guy.
On Tue, Dec 13, 2011 at 11:40 AM, Keith Heimbold ag...@hotmail.com wrote:
My newly acquired K3 makes this VFO noise as well for the VFO A knob. It
is only annoying when I have the headphones off.
Keith
Sent from my iPhone please excuse typos
On
I will have to check it this weekend. I got the rig fully assembled.
Keith
Sent from my iPhone please excuse typos
On Dec 13, 2011, at 9:35 AM, Guy Olinger K2AV olin...@bellsouth.net wrote:
Is there felt behind the knobs?73, Guy.
On Tue, Dec 13, 2011 at 11:40 AM, Keith Heimbold
Any chance you could upload that recording to some place where we could
all access it? It would be nice to be able to compare perceptions. If
you edited the file to isolate the occurrences it shouldn't be too large.
73,
Dave AB7E
On 12/13/2011 6:16 AM, Lu Romero wrote:
I have sent my
I would like to hear you it, too, Lu.
If you don't have any webspace please feel free to send it to me by mail and
I will gladly upload it on my site and provide the download link for the
list ...
Vy 73, Olli - DH8BQA
http://www.dh8bqa.de
- Original Message -
From: David Gilbert
On 12/12/2011 5:10 PM, Jim Brown wrote:
Yes, chokes like these would be a great choice for use at the feedpoint
of ANY HF antenna, whether fed with coax or parallel conductor line.
One VERY important exception that I forgot to mention is that common
mode chokes can be destructively overheated
Jim Brown said:
Mon, 12 Dec 2011 17:10:36 -0800
I have not attempted to measure the Zo of the bifilar wound chokes I've
built using #12 and #14 THHN, but Jerry Sevick, in the last of his
books, did wind some using exactly that method and that wire, and he
says the Zo of those he wound
On 12/13/2011 10:43 AM, Dean Straw wrote:
I used a bifilar wound CM choke at the input of the ARRL high-powered tuner
described in late editions of The ARRL Antenna Book. It had 12 bifilar
turns of #10 AWG Formvar wire on a 24-inch diameter OD Type 43 core.
Jerry said that Zo for this sort of
I used a bifilar wound CM choke at the input of the ARRL
high-powered tuner described in late editions of The ARRL Antenna
Book. It had 12 bifilar turns of #10 AWG Formvar wire on a 24-inch
diameter OD Type 43 core. (Nowadays I'd probably use a more optimal
Type 31 mix.) In testing the input
Recently, my VFOA knob got a little wobbly, and then it started dragging
heavily, only when turned clockwise. I took the knob off and discovered
that the top one of the two control nuts had worked loose entirely, and
the bottom one was loose. Tightened them back up and readjusted the
drag,
Now, #10 wire is roughly the same size as the inner conductor used in
RG-213. On 10 meters the majority of loss in the bifilar transmission
line wound around the torroid will be I-squared-R conductor loss,
rather than additional dielectric losses that come into effect in
the VHF and UHF
I've gotten more than a few off list comments on this and every one
has been a good read. I put the idea out and apparently it resonated
(pun intended) with many on the list.
If you want to see just how connected you are to perfect pitch, how
well you can identify random sequences in notes and
Thanks to all who responded, I now have my KAT2.
73 Bob w7wo
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post: mailto:Elecraft@mailman.qth.net
This list hosted
I have read with great interest the threads regarding mush or blur that
some have experienced in pile-up situations where several callers were near
or at the noise level, and all blended together.
I am not qualified to say whether or not I have experienced this specific
artifact. However, during
Hi Bruce,
It was really interesting... I was QRV for about 4 hours during ARRL 10m as
S50G (CW only) and it was interesting to hear last part of my transmission
(something like ET) after CQ... TEST. At the begging I was not sure what is
really happening with my K3 :-)
73 Robert, S57AW
It was
Hello Natan,
I can hear the same thing here. Decent high frequency hearing and a
reasonably quiet shack are prerequisites to hearing it though. It's a
'sh' sound that occurs as a result of the surface of the knob
dragging against the felt as the VFO knob is spun. I've considered
applying
Joe:
Right on -- certain unnamed baluns had a quite reputation as being RF fuses.
But as the suject title above says, I'm still talking about the pros and
cons of placing a CM choke balun at the input or at the output of an
unbalancing antena tuner to feed balanced lines. Both positions are
Aloha Jim, Joe, Alan, Dean and the rest of the reflector,
I'm thoroughly enjoying reading this thread.
I'd like to ask a few questions.
Mine is a 100 watt station, but with aspirations of getting a KPA-500
eventually. I have a Palstar BT1500A Balanced L Antenna Tuner feeding a
vertical dipole
Jerry Sevick used a monster T400A-2 toroid, #2 powdered iron, 4 inches in
diameter, intended to be the 4:1 up transformation for the back of high
power tuners. (Sevick, Understanding Baluns 2003, CQ Communications, pp
60-61) I have run these some times with brick-on-key 1500 watts and never
On 12/13/2011 11:48 AM, Alan Bloom wrote:
Is that a valid assumption? I thought that much of the loss in coax is
due to the dielectric loss of the insulation. That implies that the
bifilar winding should have less loss than coax.
This is a very common misconception, and it is VERY wrong
Dale,
That describes the noise I hear as well.
Let me know if the oil treatment works.
Regards,
Keith
AG6AZ
Sent from my iPhone please excuse typos
On Dec 13, 2011, at 12:29 PM, Dale Boresz d...@lightstream.net wrote:
Hello Natan,
I can hear the same thing here. Decent high frequency
From www.aprs.fi:
An APRS-equipped high-altitude balloon, using the callsign K6RPT-11,
launched from San Jose, California, has almost crossed the Atlantic
Ocean, and is now passing Azores, and approaching North Africa. With a
little change in direction it could as well go to Spain or Portugal!
You might try wrapping the felt, torroid-like, with Teflon pipe thread tape.
NE4W
Sent from my Cap'n Crunch decoder ring
On Dec 13, 2011, at 5:13 PM, Keith Heimbold ag...@hotmail.com wrote:
Dale,
That describes the noise I hear as well.
Let me know if the oil treatment works.
Jim Brown wrote:
On 12/13/2011 11:48 AM, Alan Bloom wrote:
Is that a valid assumption? I thought that much of the loss in coax is
due to the dielectric loss of the insulation. That implies that the
bifilar winding should have less loss than coax.
This is a very common misconception, and it
I have only had my K3 since January but no noise. I have mine set pretty
loose. I wonder if you could turn the pad over. If that stops the noise
maybe just replacing the pad would work.
Joe K2UF
No trees were harmed in the sending of this e-mail; however, many electrons
were inconvenienced.
I used to think that dielectric losses were a significant factor until
someone pointed out the attenuation data for various transmission lines
between 2 and 500 MHz. The plots for all the various transmission lines are
straight lines. If dielectric losses were involved, they should curve toward
On 12/13/2011 2:47 PM, Ian White GM3SEK wrote:
The reduction in loss is almost entirely due to increase in the diameter
of the center conductor (because that conductor has the largest current
density and hence the highest skin effect losses). The foam dielectric
is merely something that*has*
Just finished my KPA500 and was wondering if I need to use a low-pass filter on
the out put? In the manual for the am p I noted there is a LP filter for each
frequency band.
I have a Bencher YA-1 LP filter , a nd yes I know that it cuts off at 29.7MHz.
BTW the amp is going to be used with
Thomas, F4ILX, a traduit le KX3 panneau de commande de référence en
français. Le fichier PDF peut être trouvé au bas de notre page KX3:
http://www.elecraft.com/KX3/kx3.htm
Merci, Thomas!
Wayne
N6KR
__
Elecraft mailing list
When I could, I paid more attention to the click problem during this
contest (after the CQ WW CW experience). Many times, some guy/guyette would
snuggle up to me and start CQing, often .500 khz away, sometimes .400 and
even .300 (measured). Obviously, my transmissions weren't interfering with
Zack,
The additional LPF filter is not needed for use with the KPA500.
73,
Bruce, N1RX
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post:
Hello gang,
I was perusing the KX3 page that Wayne so kindly linked to in his message about
the french translation of the KX3 Quick Start Guide when I noticed the pictures
of the KXPA100 and KXAT100. I am curious about those and was wondering when we
will find out more about them; if there is
The problem is their transmitter and/or amplifier. But your K3 can
neutralize a lot of the clicks.
Use the noise blanker. Set CONFIG:AGC PLS to nor. Set the NB level to IF
OFF, and dsp t1-7, t2-7, or t3-7. Try 1-7 first, then 2-7, and finally 3-7
for really bad clicks. These three settings
Ah rats, I forgot to list the website...
http://jakemandell.com/
Click on Music Tests...
I have the memory of a sieve...
Gary
KA1J
I've gotten more than a few off list comments on this and every one
has been a good read. I put the idea out and apparently it resonated
(pun intended) with
43 matches
Mail list logo
