Hello All,
It is noticeable on this Reflector that occasionally folk become annoyed by
any critical comment about the K2 in its various configurations, e.g K2/100.
Although such a reaction is understandable, we are human, it might be useful
to take a look at what underlies critical comment. As I
The level of phase noise should be in dbc/Hz not db/Hz. Cannot type,
sorry.
73,
Geoff
GM4ESD
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I agree with Stewart; it seems that a lot of the more technical discussions
are carried out off reflector. It would be much more constructive if all
interested parties were able to take part.
73 Fraser G4BJM
From: Stewart Baker [EMAIL PROTECTED]
It is my belief that a lot a technical
Installing prefilter IN STEAD of KNB2 gives the possibility to
place 5dB 140 ohm attenuator on the same board in front of the prefilter.
Then the 5dB pad should be temporarily taken out of function on main rf-board.
Installing prefilter on top of KNB2 :
-Input of KNB2 seems to have the
Interesting Earl, the non exhaustive tests I've done indicate that it is not
due to magnetic fields. But if indeed that is the case, there must be a
relatively easy, if perhaps not elegant, way of significantly improving
this.
Has anyone else investigated this?
73 Fraser G4BJM
From: Earl
Geoffrey, as I recall from tests I've done in the past, it doesn't appear to
be power related, and is not related to the KPA100. I'm not sure though if
that completely rules out your suggestion?
BTW, the K2/100 is usually putting out about 50W when driving my tube
linear, so is just ticking
Hi all.
K2 #4785 is well under way no major problems yet.
my kit was supplied with inductor L31 10uh.
but due to xtal not being 'rubber' enough ref Gary at support,
to give me the correct pll range.
I am waiting on a replacement for L31 with a value of 12uh
The manual states a prefered range of
My K2/100 sits on top of my TS950SDX. If I go above about 30-50W with the K2
on 80 and 160M I have to reset my router. Was using a Belkin router. Now
using a Netgear wireless router. Both cutout. This doesn't happen all the
time - maybe 50% of the time. Been wrapping ferrite on everything, but no
On Mar 18, 2005, at 11:46 AM, Jack Brindle wrote:
Don and I have extensively discussed the use of the microphone 5 volt
line. I fully agree with his strong suggestion to not use it. In my
case I found problems with RF Feedback that I have been able to
directly associate with my use of the
Went together perfectly with ATU and 30m. Working lots of 20m DX in the contest
(3el beam helps ;-)
73,
John K1JD
Jamestown, RI
K2's 139 583
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G3RXQ's suggestion that Maybe the reflector could be
sub-divided ? is a good one.
I have to go thru the list and delete all the K2 info
before I am ready to start reading.
How about:
K1, the one I want most.
KX1, I would read this also.
K2
K2 add ons
Antennas, realliy important to me.
General,
N2TK, Tony wrote:
My K2/100 sits on top of my TS950SDX. If I go above about 30-50W with the K2
on 80 and 160M I have to reset my router. Was using a Belkin router. Now
using a Netgear wireless router. Both cutout. This doesn't happen all the
time - maybe 50% of the time. Been wrapping ferrite
Tony,
Have you thought about the power supply? Is the same power supply being
used for the K2 and the TS950SDX? Could it be that it is not RF causing
your problem at all, but trash induced on the power line?
73,
Don W3FPR
-Original Message-
My K2/100 sits on top of my TS950SDX. If
Gregg,
Try the K2 optional power control mod
http://www.elecraft.com/Apps/Power_Control_Mod.html and see if that helps
your power fluctuation. Even if it isn't a complete cure, it will minimize
the fluctuation.
The K2 does its ALC through the microprocessor and changes the power in
discrete
It may also be a good idea to try the K2 on a dummy load to see if there is
any effect then. The entry point of the interference needs to be tracked down
somehow to enable a cure to be made.
Another problem that must be getting closer with ever wider bandwidths being
employed on broadband,
Hi Earl-
Here's a wild guess to throw in the mix. Since you have tried shielding
and separation to eliminate or minimize the presumed radiated noise
path, I'm beginning to wonder if the noise source is conducted via the
power lines vs. radiated.
To validate the premise, perhaps you could
I just received K2/100 #4853 yesterday. I have been building like mad and
also keeping track of the time I spent on each board. The control board
took 5 hours. The front panel board has taken four hours but does not pass
the resistance checks. I initially got readings on J1 similar to what
Bruce, NM5B wrote:
Here's a wild guess to throw in the mix. Since you have tried shielding
and separation to eliminate or minimize the presumed radiated noise path,
I'm beginning to wonder if the noise source is conducted via the power
lines vs. radiated.
==
I have never tried shielding.
Having completed KX1 #1056 only two days ago. I was thinking the out put
pwr is sort of low.
I used a 13.1 v battery supply and got a 6.87 (1.96 w) reading on 20m
and a 8.07 (2.0+w) reading on 40m using the Elecraft DL1 and a DMM on
TP1. Can the output power be tweaked for max output in the
You should be seeing 3 to 4 watts output under those conditions as described
in the manual, RC.
Did you do the final alignment per Page 58 of the manual?
Ron AC7AC
-Original Message-
Having completed KX1 #1056 only two days ago. I was thinking the out put
pwr is sort of low.
I used a
I am not sure what is is happening with this unit. My K2 [#4690] is
at the stage where I am adding the KI02.. Up to this point I have only
had one gremlin.. While going thru the filters last week, the radio
locked up on 40M ..all other bands were OK, but on 40 the freq was
locked. I
Hello everyone!
From one debate we went to two different ones.
While on the beginning we were talking about K2's TX noise and birdies on
SSB now we are talking on another subject which is interference of magnetic
fields on K2's behavior.
Let's see the noise and birdies problem first.
I found the
Thanks to all elecrafter's ...
O.K So, it's going to be Beewax, hotmelt or non acid silicone.
Now, all I've got to do is to find the cash for the K2.
O.T Look at www.pagination.plus.com/wedding/ for a Boatman/Womans wedding
'73's
Joe Jackie
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Just finished the KAT2, first accessory to my otherwise vanilla K2
#4398.
1. I ended up with a 47 ohm resistor left over and R6 on the control
board empty. I can't find a place in the manual where it told me to
install it, but from the circuit, it seemes to be needed so I put it
in. (Step 2 on
Fred,
Solve the voltage regulator situation first - it certainly sounds like it is
either bad or there is a bad connection somewhere in the voltage supply
path, in any case it is not regulating to 6 volts.
R6 is installed after the balance alignment and you are not there yet.
Furthermore, if you
Fraser Robertson wrote:
Interesting Earl, the non exhaustive tests I've done indicate that it is
not due to magnetic fields. But if indeed that is the case, there must
be a relatively easy, if perhaps not elegant, way of significantly
improving this.
Has anyone else investigated this?
I
N2TK, Tony wrote:
My K2/100 sits on top of my TS950SDX. If I go above about 30-50W with the K2
on 80 and 160M I have to reset my router. Was using a Belkin router. Now
using a Netgear wireless router. Both cutout.
Don't get me started about routers and 160/80 meters! I have an inverted L
Howdy Folks,
I have not been on the air very much this week so can make no
predictions about propagation conditions on 20 or 40 meters. I'm been
trying to beat another ECOM course into its final form. ARECC Level 3
hybrid classes commence on April 9th. Should keep me off the streets for
I couldn't stand it any longer..Got on the air tonite with 5 watts..
wrked VE2.. T9 and UA on 40M.. I' ve never been on 40 without an amp
running MAX SMOKE.. This is really a GREAT radio.. Now back to
building..SSBKPA 100... and KAT100..
First QRP Q's ever.
Doc K8RR
I'm just at the point of testing the PLL Reference Oscillator Range as
well and am measuring 9.11 kHz. This is low compared to the spec of 9.8
to 15 kHz per the manual. Before I proceed to much farther, is 9.11 kHz
okay as is? Should I be getting a 12 uH replacement L31 as well? What
is
Just finished K2 4790 tonight. No problems in construction or
alignment. It all seems to work per spec with the alignment by the
book just using antenna noise and zerobeating WWV and/or CHU to check
the accuracy of the VFO. One quick qso in the log with many more to
go.
My thanks to everyone
Mark;
I would recommend using the 12uH inductor. I designed the K2 PLL
temperature stability mod and it is my recommendation that you not have an
oscillator reference range below 9.8kHz for the most effective performance
of that circuit.
-John
KI6WX
- Original Message -
From: [EMAIL
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