Looking at the KAT-1 manual, it appears that NT 2 has the capacitor on the
antenna side of the tuner. I'm guessing that X10 means just that; whatever
value displayed x10. If you can do the parallel/series math to derived the Z
looking back into the tuner then go here: http://ac6la.com/tldetails
The advice I received was to try the radio stock then select what I needed. I
didn't want to deal with offsets or aligning filters when I eventually get the
sub RX. Because of this I opted to upgrade to the 2.8KHz and purchased the
400Hz on this list. When I get the sub rx I'll buy 250Hz x2, an
Hello
Is the K3S ATU different tan the old K3ATU installed in the K3?
I was told that if I want to upgrade a K3 with general coverage to a similar
K3S I need to change:
KAT3A
KBPF3A
KSYN3AUPG
KXV3B
But my question s what is different in KAT3 and KBPF3A that I need to change
them
But my question s what is different in KAT3 and KBPF3A that I need to
change them
KAT3A has a bypass relay when the tuner is not in use.
KBPF3A changes the bandpass filter for 0.5 - 2.0 MHz "band" to move
the lower cutoff from 500 KHz to 100 KHz.
73,
... Joe, W4TV
On 9/29/2015 11:11 AM,
Hi all,
after years fb function I have experienced strange behavior.
On 3.5 Mhz band I set the width and shift on some value (no matter
which). Then after swithing to another band and back settings on 3.5
band are always changed to filter 1, BW 2.2 and shift 1.6. It is
posible to adjust it aga
Hi,
i have studied all the posts about this topic.
Seems, that is still, huge confusion about that, so i will try to formulate
a problem on simply way:
*With low impedance earphones plugged into the audio jack on the K3, you can
hear a really annoying noise (hiss) even with the AF and RF volume se
Phil:
Do you have a K3S by any chance. My K3S actually transmits a signal
when in TEST mode! When I told Elecraft about it, they shrugged their
heads like it can't be.
The TX power appears both on my P3 (with TX MON showing both PEP and
SWR), and also my LP-100A wattmeter. It's only very,
At what power level do you see or measure this signal? I don't seem to
see any power output in TEST mode during transmit.
73
Bob, K4TAX
On 9/29/2015 12:23 PM, Dan Atchison wrote:
Phil:
Do you have a K3S by any chance. My K3S actually transmits a signal
when in TEST mode! When I told Elecr
In Test mode there is no signal output at all. That is the reason for Test
Mode. So, on the P3, you don’t see a signal and you don’t see signal power
level. But, the fact that the SWR bar chart shows something is, to me, an
anomaly.
73, phil
> On Sep 29, 2015, at 10:34 AM, Bob McGraw - K4T
I have a K3 S/N abt 5000 which has both main and subreceivers with all recent
mods including new synth boards. The filters are all 8 pole -- main
configuration is 2.8, 1.8, 400, 250. Sub receiver is 2.8 and 400. All are
correctly configured via the K3 utility and have given me no problems on
OK Phil. I supposed I was confused where you said " My K3S actually
transmits a signal when in TEST mode!" I didn't find any measurable
output when in TEST mode using my K3S.
Thanks.
73
Bob, K4TAX
On 9/29/2015 12:52 PM, Phil Hystad wrote:
In Test mode there is no signal output at all. Th
Actually, I don’t have a K3S. Though, I do see another message quoted below
from Dan Atchison who mentions a K3S transmitting a signal in Test mode. No
signal on a K3 though.
73, phil
> On Sep 29, 2015, at 11:03 AM, Bob McGraw - K4TAX wrote:
>
> OK Phil. I supposed I was confused where yo
I do not notice any hiss with K3 with any headphones. I noticed hiss with
other radios.
Ignacy, NO9E
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-background-hiss-noisy-K3-update-tp7608490p7608498.html
Sent from the Elecraft mailing list archive at Nabble.com.
__
To answer a few questions, I'll try to be as definitive as possible.
I see, according to both the P3 TX Mon AND the LP-100A up to about 0.4
watts output from the K3S on CW mode in TEST. The sensors for both the
TX Mon and the LP-100A are in series, the TX Mon immediately after the
K3S and the
Check to make sure you do not have a blank macro or blank text message
set up for those keys.
To check the text messages: Press Ctrl-Alt-T and then use the up/down
arrows to scroll through the list, look for the 1, 2 or 3 keycode.
To check the macros: Press Ctrl-Alt-M and then do the same thin
If I had to guess, which is exactly what I'm doing, I think either the LPA or
the HPA is generating a spurious signal and it sees a mismatch into your BPF. I
would try to get it into this state and use your other radio to sniff around.
On 9/29/2015 11:59 AM, Dan Atchison wrote:
To answer a f
Hello Bozidar,
I suspect that the issue may be particular to your particular K3. You did
not mention the S/N range of your radio, and I may be incorrect about this
but I think that very early K3's had an issue similar to this, that was
quickly resolved.
The S/N of my K3 is in the 58XX range, and
Not in Data A mode. Using Data Xmit and PSK31 for Data MD and using P3 SVGA
for keyboard. No external software.
Just tried it again for first time today and all seems well -- I can adjust IF
BW seamlessly from 50 Hz to 2.8kHz. Apparently it was a fluke that was
corrected overnight by a gre
I got it!
Thanks to all. I finally got the darn thing working. Went into the MMTTY
settings box and set “sound+com(FSK)” os similar and all is now working. Made
several QSOs and then went to PSK.
Thanks…
…bill nr4c
> On Sep 24, 2015, at 4:00 PM, Bill Conkling wrote:
>
> I have been tryi
Dan,
This is very odd behavior. There should be no output in TEST mode, and no
contribution to SWR from the KAT3A. The two problems may be related.
I hope you can return the rig to us for analysis. It will of course be covered
under warranty.
73,
Wayne
N6KR
On Sep 29, 2015, at 11:59 AM, Dan A
Hello
After a good attempt last weekend to do RTTY, now I don´t know why I am not
receiving any RTTY
I am using K3 + N1MM + MMTTY
I tested with cables direct to notebook and on a Tascam US-125M and I can
transmit but both are not receiving.
Any idea about that?
Thanks in advanc
Hi Dale,
tnx for interesting info - i have done this test and ranges on AF and RF
knobs are 2-240, so no problem with that.
Yes it is an early K3, S/N 28xx.
I use Sennheiser CX 300-II ear-canal phones impedance 16 Ohm - maybe is this
impedance too low,
but accordingly to the data-sheet for LM4811 t
A bit off-thread, but sort of related - wondering if folks on this reflector
have any experience with USB oscilloscopes. I'm considering adding an o'scope
to my test bench, and came across an Australian company called Bitscope.com.
They have several models and appear quite affordable. The nice t
I notice this too with my K3and TXMon. It appears to occur in the Test
Mode after I've previously used the transmitter. My guess is that there
may be a capacitor or two holding some voltagefrom the prior real
transmission. If I use the test mode first, before any transmissions,
the PEP/SWR in
Hello Bozidar,
I have K3 #5102 and also well preserved high frequency hearing. I've had the
same hiss on my K3 audio since it arrived from the factory. I've used a wide
range of headphones, expensive and cheap, and it's present with them all. I
discovered that the fix is to introduce some resistan
I have a K3 with the second receiver and I’d like to utilize it with a receive
only antenna. I have a horrible intermittent noise that I cannot identify and
is heard state-wide at the upper portion of 80 m. I’m hoping a small loop
antenna might help null that noise or at least a lot of it.
I kn
Hi Jim,
I have one 200 - 800X usb scope, use it every day to inspect for proper
connections, board issues,
and the like. It is made in china, the manual isn't. But it runs under windows
7 - 10 and is pretty straight forward.
Now that I have one.. not likely to work without one.
Have a great
Steve — Sounds like that is indeed what is happening. I may look into drilling
some holes in the capacitors so the charge will leak out. :-)
73, phil, K7PEH
> On Sep 29, 2015, at 3:28 PM, Steve Glickstein wrote:
>
> I notice this too with my K3and TXMon. It appears to occur in the Test Mode
HI Phil,
The PC based scopes rely in the sound card.. and from its limitations, I have
gotten only as far as using Spectragram by Visualization Software..
While quite nice for what it does.. a nice Tek 2235 can't be replaced.
Have a great day,
--... ...--
Dale - WC7S in Wy
Subject
Hey Jim,
One thing to remember with any digital scope is that you need to watch out
for digital sampling artifacts such as aliasing of signals in question.
There was a ham I knew that kept complaining that his AD9850 DDS module was
operating on two different frequencies, sometimes at one freque
Does anyone have a diagram for connecting the A full K-Line (K3, KPA500 and
KAT500) with the Microham MicroKey II. I'm following the diagram in the
KAT500 manual but having problems understanding the best way to connect the
PTT lines from the MK II to the radio ...
I'm using the E850463 Aux in
To which PTT connections are you referring?
73,
... Joe, W4TV
On 9/29/2015 8:28 PM, Bill OMara wrote:
Does anyone have a diagram for connecting the A full K-Line (K3, KPA500 and
KAT500) with the Microham MicroKey II. I'm following the diagram in the
KAT500 manual but having problems under
On my K3 I have an LP-Pan connected to my IF out on the main receiver and a
FunCube Pro on the subreceiver IF out. The LP-Pan is setup to a Steinberg
USB UR22 sound card. Therefore, I have two panadapters, one through Win4K3
for the main receiver, the second using NAP3 v5 to the funcube pro.
Thi
Hi Jim,
For a number of years I used a Fluke 97B 50 mhz scope.
Picked it up for $50 bucks on Ebay and used it for a number of years
then sold it for $50 bucks. :-]
There are some youtube reviews of PC type scopes you might check out.
Best!
N1BBR
--
bw...@fastmail.net
__
I'm assembling a Softrock Ensemble RXTX rig, most likely for use as a 24x7 WSPR
beacon; there are several construction steps where optional testing beyond the
basic voltage, resistance, and current measurements can be done with a scope.
Jim Bennett / W6JHB
Folsom, CA
> On Sep 29, 2015, at 2:41
The lineup here is: 2.7 & 1.9 for ssb, 500/8pole and 200/5pole for cw.
I'm seldom on ssb, 95%+ on cw, so can't say anything useful for the
first two filters. I use both of the cw filters as conditions and
circumstances dictate. The 500cps filter is first choice and does most
of the work here. T
A number of people contacted me off list asking what the model number of the
gun box I bought. I was visiting and I gave the box to my host (he doesn't
know either) so I don't have it. Perhaps when I get the bill. In the mean
here is some suggested info on the stackable ammo case below.
73
Fred, A
Which Elecraft transceiver? Kit or factory built? Was it working
before or has it never worked properly?
73,
Don W3FPR
On 9/29/2015 11:29 PM, way235 wrote:
I have noise on all bands but don't hear any signals at all.
I have a TX light when keyed and can see the meter move when I speak into
t
An attenuator in the phones lead might be what you need. Some are available
from various audio outlets (I have an old Radio Shack - rip - one here).
Turn up the attenuation until there's no background audible and you are all
set.
If you are handy with a soldering iron, a resistor in series with e
I also tried ant 2 since it has the ATU but I have the same problem on both
ant connectors.
No power out and no RX just noise.
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View this message in context:
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On 09/29/2015 04:26 PM, Phil Hystad wrote:
The
bar graph registered an SWR of 3:1 (normally about 1.1:1) in
response to key down while in Test Mode. Yet, the bar graph acts
normally showing the correct SWR in TX mode (not test).
In test mode there is no power out of the K3. The SWR calculati
What is the serial number of your transceiver and do you have a callsign?
Also, what revision of the manual do you have? With that information there are
lots of people on here able to help you.
73 de David G4DMP
On 30 Sep 2015 04:29, way235 wrote:
>
> I have noise on all bands but don't hear
Hallo John,
tnx for proposal, a will try with some attenuation.
Gary AB7MY from Elecraft have helped me with some interesting proposals too.
I completely agree with you, unfortunately mein KX3 showes the same behewior
(hiss when RF put on zero), but in contrary to my K3, this hiss disappeared
when
In the next
>code release I'll add a feature to force the SWR to read 1:1 when
>forward power is close to zero.
>
>Alan N1AL
If no valid result is possible, then "1:1" would be the *worst* possible
choice! Simply blank the display or show "N/A".
Most QRPers understand that primitive SWR meters
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