Dear Gang:
There will be a flash mob meeting on 7.200 LSB (that's SSB) on Saturday,
October 14, from 8pm - 12am. This used to be called the Zombie Walk. This
year, it has been expanded. You don't have to be walking. You don't even have
to be at Pacificon. Join us from your car, your home
Hi Wayne,
I think it's a great idea, but the major appeal would be if you also could
offer an ultra-portable KXXV transverter series to go with this. My
thought is something maybe half the size of the KX3, with room for several
transverter modules, like 2m, 70cm, 4m, etc. Ideally with 5W+ output
Is there a menu setting which would correct an imbalance between the level of
rf output when using USB vs LSB?
I can not get the same amount of drive for USB nor do I see the same amount of
power supply current when switching between sidebands. CW operation is normal
with full power out (using
On 09/25/2012 02:01 PM, Wayne gmachl wrote:
I currently have a K3/100 and am using the MFJ 949E and am looking at
getting the KAT3. The 949 is working great, but would like input as to
changing to the KAT3.
I have both. Well, the 949 is a D. You won't regret getting a KAT3. I
can't recall any
Brian
Have you verified in the device manager that the comport settings are
right? Then under advanced settings assign it a comport #. If that is done,
and latest drivers, and in my case making sure the db9 was seated all the
way. It should work.
On Sep 24, 2012 8:02 PM, Brian Hunt
The manual states that the KX3 power connector is 2.1mm. There are two
standard sizes that have an inner diameter of 2.1mm. One is 5.0mm OD and
one is 5.5mm OD. I believe that the supplied cable has an OD of 5.5mm, but
just wanted to confirm. Both sizes will probably work, but the larger size
The KAT3 means one less box on the radio desk. To me, that is a real plus.
Bill W2BLC
--
IN GOD I TRUST (but, NOT a single politician)
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Help:
I would be very keen on something like this but not at the expense of
performance. IMHO it would be a mistake to make transverters small with poor
strong signal handling and sensitivity. In Europe with the high level of local
activity on narrow band modes signal strengths can be huge.
Best
Rick,
Yes, all the 2.1mm coaxial connectors used by Elecraft are 2.1mm inner
conductor 5.5mm outside.
73,
Don W3FPR
On 9/25/2012 9:14 AM, Rick Miller - AI1V wrote:
The manual states that the KX3 power connector is 2.1mm. There are two
standard sizes that have an inner diameter of 2.1mm.
Hi,
I'm reposting this because I'm still struggling to get my customized CAT
+ CW interface for the Kx3 to work:
I attempted yesterday to wire up a TTL Serial cable from FTDI, containg
both CAT as well CW keying (using #RTS), and I can easily get the CW to
work (keying using #RTS through a
Brian,
The schematics for the KX3 is not yet available. However, I believe the
KX3 CAT interface is the same as that used in the XG3 signal generator
(if not exactly the same, it is similar). You can download the XG3
manual and find the schematic at the back.
The CAT interface should
Brian,
The ACC1 port on the K3 is fully compatible with the RS232 standard,
although it uses 0 V rather than a negative voltage when transmitting
a low unit. This is the same TTL-level interface we use in several
other products including the XG3, W1, W2, and K144XV. We offer both
RS232
Wayne,
The KAT-3 tunes just about anything.
The MFJ tuner I have had for a long time is collecting dust now.
No doubt about it, choose the KAT3, smooth operating.
73
Arie PA3A
Op 25-9-2012 14:01, Wayne gmachl schreef:
I currently have a K3/100 and am using the MFJ 949E and am looking at
Well, technically, DATA A doesn't need a way to change Fc. Since the K3
doesn't actually process anything in DATA A, it's all up to whatever external
sound you're using.
There was some yammering about allowing a shift of Fc for DATA A, for example
to 1.28 KHz, a while ago. This was for JT65A
I have for sale three Mini-modules. I built each of them and they are all in
perfect condition. Closing down the shack and lab here in preparation for a
move, so its time to do some major cleaning. Purchase includes all
documentation as well as USPS Priority Mail shipping to your USA QTH.
Want to do a trade deal,my Ten-Tec Eagle for your K3. The Eagle is a
high performance simple to operate, simple to set-up radio. There is
one set-up menu with 11 items and all else is done with knobs and
buttons. It is a few months old and is in as new condition, has not
been around tobacco smoke.
Even with JT65A (JT65-HF) one does not want Fc=1.26. The JT65 decoder
looks for sync tones at 1.26 +/- 1 KHz but since the actual JT65
signal extends up about 250 Hz from the sync tone, the filter should
pass *at least* 250 - 2500 Hz (L0=0.25, HI=2.50 or BW=2.20, FC=1.38).
Since NOR in DATA A
My K3 has started intermittently going to lower power--usually around 5W.
After some online research, I ran the TX calibration in the K3 utility
program, and it failed for both high and low power. So clearly something is
amiss.One post said Elecraft support had said to reset the TXGN values back
test
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Hi Wayne
Yes, I would like one if/when it is available.
John Hoaglun
NG0R - EN25
http://www.hoaglun.com
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Post:
I have for sale three Mini-modules. I built each of them and they are all in
perfect condition. Closing down the shack and lab here in preparation for a
move, so its time to do some major cleaning. Purchase includes all
documentation as well as USPS Priority Mail shipping to your USA QTH.
I just added KBPF3, KRX3 and KPA3 to my K3 which already had KAT3 and
KXV3A. All looks good until I tried to perform the RF Calibrate from the
Utility Calibrate Tab. All firmware is current and the utility is latest
version on OS-X.
I tried two different dummy loads and two different cables to
I'm asking for a little help with filter choices. I've read all I can on the
subject
and have come up with what I think is a good choice for me.
I'm going to be getting the sub-receiver so I'm going to be getting 2 of
each filter.
At almost $300 a filter set I would hate to make a choice that I
There are 2 flavors of 5.5 OD power connectors.
Check that your connector inside female tip diameter is 2.1, not 2.5 : I
had made such a wrong cable for my K2 and was plagued with intermittent
power contact, making loud audio thumps, also the RS232 had to be
repaired. No more thumps when a few
I assume that TTL-level means it works with a +5V/0V swing on input to
the radio?
73, doug
On 25-Sep-12 14:33, Wayne Burdick wrote:
Brian,
The ACC1 port on the K3 is fully compatible with the RS232 standard,
although it uses 0 V rather than a negative voltage when transmitting
a low
Stan,
Your first 3 selections mirror mine. I think you'll find them all useful.
I have only the 2.8 and 400 in my second receiver, however, and find that to
be good for me. You do not have to install filter pairs for every IF width.
Filters are pretty easy to install, so there's no penalty
You have chosen the bread-and-butter choices. You may find they are all
you need. You can add others later, if needed.
Could you go with less? Personally, I only use the sub-receiver for
chasing split DX. I don't need razor sharp filtering - in fact, I need
to hear a broad spectrum so I can
I'm pretty sure about getting the:
2.8 Khz, 8 pole
1.8 Khz, 8 pole
400 Hz, 8 pole
I doubt that the difference in performance justifies the upgrade
charge for 2.8 vs. the standard 2.7 KHz filters - particularly if one
is also getting 2.1 or 1.8 KHz narrow SSB filters. The savings
nearly
Hi Matt,
I agree completely.
Apart from reporting a (too much) exact JT65 frequency, a very minimal
advantage of FC 1.28 is that you see the right band and can narrow the
filter ...provided the QSO is on the center of the JT65 waterfall.
(I was feeling alone, only on this topic !)
Regards
I would like to find out how many Elecraft user's in the STL area would be
interested in creating a user club. I had emailed Wayne Burdick at Elecraft
and he thought it was a good idea.
Please email me off reflector with your thoughts and ideas. If there is
enough interest I will contact all of
The suppressed carrier frequency (what the K3 display shows) is actually
what is expected as the ORG used in JT65. When you observe the Reverse
Beacon, it will list an offset, + or - from that ORG frequency.
That means, in a sense that the 'correct' way to describe a JT65-HF QSO
would be the ORG
On Mon, 2012-09-24 at 09:14 -0400, Phillip Heller wrote:
I have several Rigol instruments, including the DS-1102D (2 Channel
100Mhz w/ 16 Channel Logic Analyzer).
It's definitely been a useful investment and has performed very well
for me.
For those interested in an oscilloscope that also
I sceond Joe's comments.
here: 2.7 , 2.1 , 400 and 200 in Main rx;
2.7 , 2.1 and 400 in Sub.
73
Arie PA3A
Op 25-9-2012 20:08, Joe Subich, W4TV schreef:
I'm pretty sure about getting the:
2.8 Khz, 8 pole
1.8 Khz, 8 pole
400 Hz, 8 pole
I doubt that the difference in performance
Hi Stan
Mine is with FM/2.7k/2.1k/400/250 on both RX's. If you have on both RX same
filters the diversity RD is a dream, otherwise if you are not planning to go
for diversity you can mix any filter selection.
My two cents
73
VE3GNO Daniel
From: Stan AE7UT
Thanks for the verification on it actually being FTDI. You can control the
comport No assigned here[
COMPort_Assignment is a free utility that is used for assigning the COM Port
numbers of FTDI devices. It runs under Windows XP, Vista and Windows 7.
COMPort_Assignment utility is available for
Thanks for all the feed-back. It looks like I'm at least in the right ball
park.
I definitely want the diversity reception so I'll be doubling most if not
all filters.
I've decided to stick with the 2.7 for now. I doubt my ears could hear the
difference.
Interesting that most here have gone
I would not assume most users prefer this. I have 2.8/1.8 and it suits me
just fine, thank you. The 1.8 works well under contest conditions, when
needed. Remember there is almost always a silent majority.
73,
Bruce, N1RX
Interesting that most here have gone with the 2.1 vs. the 1.8 KHz
That's right Bruce, Everyone to their own. I like the 2.8k filter too, and
did try the 2.7k filter which you get mandatory in any case. I just
preferred the difference I could hear in the tx/rx audio (tx sent back me
recorded on test).
I use both the 2.1k 1.8k and would not give up either. Also
Doug,
Yes, by definition a TTL-level input should respond to a high input of 2
volts or greater while a low level is 0.8 volts or less.
Just as additional information, if an input is CMOS compatible, it will
respond to a high level of 3.5 volts or more and a low level below 1.5
volts.
73,
Don
The input can accept the full RS232 range, +/- 25 V. But 0-5 V will
also work. In fact 0-3 V will work.
Wayne
N6KR
On Sep 25, 2012, at 10:55 AM, Douglas Faunrt N6TQS +1-510-655-8604
wrote:
I assume that TTL-level means it works with a +5V/0V swing on input to
the radio?
73, doug
On
Hi Gang,
I got my K2 a couple of years ago.
Once in a great while I would notice the audio volume drop to about 30%.
It would typically happen after I had moved the unit or had the cover
off doing filter alignments.
I found I would simply tap the unit and the audio volume would be
normal.
I
DW,
You have a bad solder connection somewhere, and it is not necessarily in
the audio section - it can be anywhere in the receive chain, including
the noise blanker and the KSB2 option if those are installed.
Use a constant signal source such as a XG1, XG2, XG3 signal generator
set for a 50
DW,
Additional information about Receive Signal Tracing when your problem
occurs. Yes, that can be done using the RX signal tracing steps in the
manual Appendix E. You will need a high level signal generator - the
xtal oscillator shown in the manual will do just fine, or the attenuated
The subject of extra-narrow SSB bandwidths comes up fairly regularly. These 1.8
kHz (and even 1.5 kHz in use out there) bandwidths are not effective for
everybody. The older I get, the less I can tolerate these narrow bandwidths
for
SSB, even in a contest. They give me listener's fatigue. I
G'day,
2700Hz and 500Hz in both main and sub RX here. Nothing else, not felt
the need, however, an FM filter could be added in one RX one day.
There have been measurements which show that the 5-pole filters have
superior group delay characteristics when compared to the 8-pole.
Regards,
Mike
Three very important items in the technicians tool box when searching
for intermittents:
1 - a can of Freeze (a freon product)
2 - a hair dryer
3 - a non-conductive probe
Explanation: The cold causes bad solder joints/PCB traces to open -
causing the circuit to fail. The heat will cause
On 9/25/2012 4:22 PM, Mike Harris wrote:
2700Hz and 500Hz in both main and sub RX here. Nothing else, not felt
the need, however, an FM filter could be added in one RX one day.
The only reason to agonize over roofing filters is, How many strong
stations do you have near you? I have the two
47 matches
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