I obtained some 7-pole LP filters from Coilcraft:
http://www.coilcraft.com/lcfilt.cfm
http://www.coilcraft.com/pdf_viewer/showpdf.cfm?f=pdf_store:lcfilt.pdf
cost $3.00 in single quantities.
This would take care of harmonic suppression. I have five of these
for different frequencies but have
Hello All,
I've just noticed that the SWR meter on my K3 is reading higher than
expected on 10m.
I have 2 different 50 ohm dummy loads. Both have 1.1:1 as measured by my
external LP-100A meter and my MFJ 259b AA.
If I connect either dummy load directly into the ANT1 connector of the K3
(no
I have a base K2 sn 1056, with a to b mods, including cw shaping mod, and
the latest firmware. I have removed all options to ease troubleshooting.
Turning the power control gives erratic power output, varying widely and
randomly as I turn the control. If I turn the power control to max, then
Thanks to everyone who offered advice. All agreed on - K2 OK, internal SLA
is not. Paperwork - licence copy (and manual).
73 David G4CWB
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help:
I have very similar symptoms in my K3/100 (SN 5284) that I assembled in
March. It makes the sound even if I am in TX test mode. Again, no
performance issues, just a slightly bothersome squeal / whine.
On Sun, Jun 26, 2011 at 8:23 PM, Geoffrey Wolf liltechdud...@gmail.comwrote:
First off it
I've solved my mystery.
I read in the archives that the KAT3 ATU is not completely out of circuit in
bypass mode. If I understand correctly, small values of L and C are used
to remove it functionally, but there is stray reactance that might
contribute to the higher indicated SWR on some bands.
I have the same thing happening, similar series K3 (5k something) , also
assembled in March.
Adi
2E0TTX
On 27/06/2011 13:38, Joe Harris wrote:
I have very similar symptoms in my K3/100 (SN 5284) that I assembled in
March. It makes the sound even if I am in TX test mode. Again, no
Did you eliminate the idea it might of been RF? You might try it in place of
your K3 for awhile to see if it acts up at your home station.
73,
John N1JM K3 #2555
Arizona
--
View this message in context:
http://elecraft.365791.n2.nabble.com/SSB-net-announcement-tp6279368p6520407.html
Sent from
Al,
Try it with regular keying - say a string of dots. The LED bargraph is
a good indicator of the instantaneous power output up to 10 watts - 1
bar per watt.
The power control is intentionally more sluggish in TUNE than in
normal keying as an assist to those who use a manual tuner.
The
Check to make sure that the cables routed in front of the fans are not
touching. A light touch will result in a sound like that. It will
change or go away with the fan speed.
73, Guy.
On Mon, Jun 27, 2011 at 9:10 AM, Adi Andrei e.adi.and...@gmail.com wrote:
I have the same thing happening,
*PLEASE DO NOT* move forward with *any* amplifier for the XG-3.
Like John Ragle I have looked at the phase noise from my XG-3 and it
is completely unsatisfactory for beacon use. At -33 dBm it raises the
receiver noise floor by more than 20 dB when measured at + 100 KHz on
28 MHz and + 250 KHz
dying to have tx functions/features that involves some back
opening ;-) 73 - Giorgio
--
View this message in context:
http://elecraft.365791.n2.nabble.com/P3-development-tp6517565p6520689.html
Sent from the Elecraft mailing list archive at Nabble.com.
Do the fans turn on when the K3 is in TX test mode?
On Mon, Jun 27, 2011 at 10:21 AM, Guy Olinger K2AV olin...@bellsouth.netwrote:
Check to make sure that the cables routed in front of the fans are not
touching. A light touch will result in a sound like that. It will
change or go away with
For Sale, Jackson Harbor Press Island Keyer, latest version. Completely
built, tested and mounted in a Radio Shack aluminum box. Not very pretty, but
rugged and really works well. I also added the 6 switch kit (no longer
available from Jackson Harbor) for ease of construction which placed
What I am suggesting is that there may be no problem at all - check with
normal CW keying.
It's the same in cw as in tune. I can't reliably set the power at any
place but max. For sure, definitely not normal operation.
__
Once again, I took my K3 to F/D this year with the P3. Again, I had a tough
time getting to sit down at my own transceiver. It seemed as soon as
someone got up from the operating position, another butt was in the seat.
Many comments were heard praising the receiver, the vox, the smoothness of
Hi John,
Thanks for the suggestion; but I wouldn't think RF would be the issue, since
the rig did the same lock-up even with the rig power control all the way
CCW. It acted more like a control issue. I will re-install it in the 6
meter station using an XV50 and a brick amplifier, where it will
Al,
Do you have the KAT2 installed? - you said a base K2, but some use
that term for any K2/10 without consideration for the options.
If you have the KAT2, disconnect it and run it into a good 50 ohm dummy
load to see if the condition still exists.
If it works smoothly without the KAT2 and
Hi Joe,
They might. It's a temperature thing not a mode thing. You can manually turn
the fans on and off and vary their speed. This might help in your analysis.
Go to CONFIG: KPA3. It should be in the nor position. Turn the VFO A dial
to change it to Fn1...Fn4. These are the 4 different fan
I had a similar experience. My K3 was used on CW and digital modes,
and only about a half hour on CW.
Our club had a guest operator who was very proficient with CW, and he
was quite pleased with the K3 and the way it operated.
He especially was excited by the QSK. the auto-spot and the DSP
Sorry, that half hour was on SSB - most of the time was on CW. 289 CW
contacts in about 11 hours CW operating time - not bad for a
fun-oriented operation.
73,
Don W3FPR
On 6/27/2011 2:01 PM, Don Wilhelm wrote:
I had a similar experience. My K3 was used on CW and digital modes,
and
Dave-NK0E and Rooster Peanut/wGOAT's FD:
https://picasaweb.google.com/goathiker/FD2011
73, wGOAT
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post:
Don,
I sort of had the opposite experience at FD. I was the only real CW op in
our local club, but my K3 was at home. One of the other club members had an
Omni-VII setup as the CW rig. I used it to make 500 contacts in about six
hours of operating time (using a multiband dipole). I
The Anne Arundel Radio Club once again convened for Field Day in Davidsonville,
MD on Saturday. This year was going to be very different. In years past we have
had one K3 in the CW tent and none anywhere else. This year I brought my two
K3s along for the CW shelter and three other club members
1.Instant (or as fast as possible) tuning when QSY to a new band or
new frequency the say way that the KPA500 does.
2. Tune while transmitting and not requiring key down to tune
3. While tuning, put the KPA500 into a reduced power mode if necessary
but not key down
4.
I've been waiting so long for the Elecraft KPA500 amp that I printed a pix
of the front panel, and put it on the shelf above the K3.
Almost as good, but no gain :-)
Ralph, VE7XF
__
Elecraft mailing list
Home:
Remove the beacon mode and the XG-3 becomes useless for T Hunts :-(
Let anybody who wants to play with their XG-3 be responsible for what they do.
Given what has been written in this thread, I don't see people rushing off, to
build XG-3 amplifiers :-)
We have all learnt something in this
The Keyer has been sold.
For Sale, Jackson Harbor Press Island Keyer, latest version.
__
Elecraft mailing list
Home: http://mailman.qth.net/mailman/listinfo/elecraft
Help: http://mailman.qth.net/mmfaq.htm
Post:
Just to clear this up:
1. We are *not* going to remove beacon mode (CW and RTTY text). It's
useful for micropower beacons, T-hunts, and receiver demodulator
testing.
2. The XG3's phase noise, about -105 dBc/Hz at all offsets above 1
kHz, is better than that of some inexpensive radios. But
Guys, the XG3 beacon will be off the air until 6/29 and then will be
located in Tamalpais Valley, CA for a week or so aimed at Mt. Diablo. I
also need to put the weather proofing device into its intended service,
covered cat box ;-)
73, Doug W7RDP
wayne burdick wrote:
Just to clear this up:
1. We are *not* going to remove beacon mode (CW and RTTY text). It's
useful for micropower beacons, T-hunts, and receiver demodulator
testing.
Very happy to hear that...but I already saved a copy of 1.14 just in case!
Add antenna testing
I have read some of the FD reports and would comment briefly on the one I
attended. Two new K3s were on line and worked flawlessly through the weekend.
K5PX and AB0S contributed the K3s to the cause. 90 percent of the time, we ran
CW on both...different bands. Made over 1550 QSOs with 90
I thought I was the only one who did goofy stuff like that...nice to know I'm
not alone.
John AE5X
Radio: http://www.ae5x.com/blog
Photography: http://www.timelesspixel.com
__
Elecraft mailing list
Home:
Many thanks to whoever posted the note about the Edgeport usb to RS232
multiport adapter. I picked up a dual port one off of eBay for just over 20
bucks and it came with free shipping!
This was one of the older ones by InsideOut but was new in the box. I went to
Digi.com and found the
The mighty K4TS, Rappahannock Valley Amateur Radio Club, 8A Field Day
featured 1 K3 - mine on 40 CW. 40 CW made 925 contacts but only 854
after eliminating the dupes. The K3 really strutted its stuff and it
was obvious what a superior rig it is when I went around and listened to
what other
The kit went together in about 5 hours.
The only sticking point I had with the build was with the Z panel. The
holes were not very close when attaching the back panel.
Everything else in the build was pretty straight forward. The IO board
had the jack screws that had to be removed before the
Let the guys play with their XG3 with 0 dBm...best approach.
0 dBm is fine but I certainly would not want my neighbor putting a
1W XG3 into a decent (0 dBi) antenna - his Icom 746 is already a
terrible phase noise generator. At 1W the calculation for the XG3
at 1 mile in a 500 Hz bandwidth at
http://www.digtriad.com/news/local/article/180752/57/Ham-Radios-Future-Sounds-Loud-And-Clear-During-Field-Day
Well, there *was* an Icom in there, too. But not at Field Day.
73 Steve KZ1X/4
__
Elecraft mailing list
Home:
Glad it went well, Mike.
When you did the inventory, your manual should have had this notation about
the jack screw nuts on pg A8:
These may be supplied mounted on the I/O board connectors.
I'm not sure why some are and some aren't. The Bill of Materials calls for
them to be KPA500 Rear Panel
The setup was a K3, N1MM and a MicroHam MicroKeyer (the CW only
model).
Do you mean the microHAM CW Keyer or some other interface?
Several times, the keying stopped but the radio remained frozen in
transmit mode. The PTT light was ON on the MicroKeyer, the transmit
light was ON on the K3
Selling K2 SN 6654. Case has some scratches/small nicks on side
panels and bottom panel. Side panels have single holes drilled
for #8 or #10 bolts used in mobile mount. Two separate top
panels included with options that couldn't be installed at the
same time; installed options:
KDSP2 DSP
The fans are still but I still hear it. Almost like some switching PSU noise.
Adi
2e0ttx
On 27/06/2011 15:21, Guy Olinger K2AV wrote:
Check to make sure that the cables routed in front of the fans are not
touching. A light touch will result in a sound like that. It will
change or go away
Could I suspect that the noise is from the vibration of the ferrite core
of the RF transformers in the PA unit? When I tx, I can hear some vibration
synchronise to my voice.
TNX 73,
Johnny VR2XMC
從︰ Adi Andrei e.adi.and...@gmail.com
收件人︰ Guy Olinger K2AV olin...@bellsouth.net
副本(CC)︰
I had 4 mounted on the board and then 6 more in the hardware. I do see
on A8 the notation about them possibly being mounted on the board. I
will freely admit that I did a cursor glance at the parts list and dove in!
I love the automatic band detection! Nice! The amp is quiet and just
loafs
The manufacturer of the stacked DE-9 connector may or may not
pre-install jackscrews at the factory. If the manufacturer
pre-installed the jackscrwws, they will have to be removed. You'll
notice the finish on the jackscrews, if already installed, differs from
the finish of the supplied
John,
I noticed the same high SWR in bypass mode on 10M the other day. I have the
KPA500 and thus was wondering why the K3 was seeing up to a 1.7 to 1 SWR
into the KPA500. So I got home from work today and tried your solution. I
turned on the ATU and tuned into a 50 ohm dummy load. When I
We used my K3 for the CW station at the WS4Y effort for the 3rd year in a
row. 989 QSO's using a 135' zepp at 60' and the K3 internal tuner.
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-at-Field-Day-tp6521189p6523367.html
Sent from the Elecraft mailing list archive
I am often on the same frequency daily - 3.575 MHz, but the ATU does not
give me exactly the same answer every night. On my wire antenna it always
starts at 5.8:1 to 6.1:1 and ends up at 1.8:1 or 1.7:1. But sometimes, it
gives me 1.0:1. The power shown on the display when transmitting always
If you can do it, see if you still have the noise running off a
battery. 73, Guy.
On Mon, Jun 27, 2011 at 8:37 PM, Adi Andrei e.adi.and...@gmail.com wrote:
The fans are still but I still hear it. Almost like some switching PSU
noise.
Adi
2e0ttx
On 27/06/2011 15:21, Guy Olinger K2AV
Depending on your antenna, the answer can be as simple as ground
moisture. Would need more detail about your antenna to speculate
farther. 73, Guy.
On Mon, Jun 27, 2011 at 10:12 PM, Kate Hutton katehut...@gmail.com wrote:
I am often on the same frequency daily - 3.575 MHz, but the ATU does
It's not a problem, but I can probably improve this behavior in K3
firmware. It's on my list.
73,
Wayne
N6KR
On Jun 27, 2011, at 7:12 PM, Kate Hutton wrote:
I am often on the same frequency daily - 3.575 MHz, but the ATU does
not
give me exactly the same answer every night. On my wire
Thanks Mike.
I'll look into why there are extras being supplied on the I/O module itself.
You are the first to report that. Up until now, they were either in the bag
or on the board.
Enjoy
Ron AC7AC
-Original Message-
I had 4 mounted on the board and then 6 more in the hardware. I
Well S/N 5033 played very well at the W2LV 3A FD effort this past weekend.
It was used primarily on 15M with a short stint on 80M.Everyone at the
FD site was very impressed with the K3 and its neighbor the P3. The only
issue I noticed was the FD message I recorded on the KDVR3 Digital Voice
OK, practically everything went as planned. Being several years older
since the last time I made this trek, it seemed as if:
1. The gate where we had to park, while it looked like the same place,
was quite a bit farther from the summit than I remember.
2. That far and that much up gets
Push the ATU TUNE button once to get a quick but somewhat rough SWR
match. If you push ATU TUNE a second within 5 seconds of the first
pass completing, the ATU will take more time and come up with a better
SWR match.
Your antenna may have some wind on it, and this can affect SWR
consistency.
Hi Guys,
I thought I would post a link to our local club's 2011 Field Day effort in
Burlington, NC. It was pretty neat how much they focused on the K3 (proud
to say it was my personal #1289, fresh back from a week in VP9).
http://www.youtube.com/watch?v=3uMY-HtV85Y
David, I find the results of your research strange. Lithium batteries are
several orders of magnitude more dangerous than SLA. They catch fire and
water and ordinary fire extinguishers don't work on Lithium! Please see
http://www.bobatkins.com/photography/li_battery_restrictions.html for TSA
57 matches
Mail list logo
