Got it fixed - All is good now.
Pete
pmeier at me.com
> On Mar 28, 2022, at 11:12 AM, elecraft-requ...@mailman.qth.net wrote:
>
> Subject: [Elecraft] K2 help with S Meter Cal.
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Chris,
The CAL S LO and CAL S HI values are as you observed.
Turn the RF Gain to full clockwise, and remove the antenna. Turn the
preamp on. Adjust CAL S LO first so there are no bargraph LEDs illuminated.
Then tune in an S-9 signal (preamp on or off, your choice), and adjust
cal S HI for
Thanks to Martin and Don.
Yep, the age setting had mysteriously advanced while in storage.
I had forgotten about the CAL submenu. Messing with the settings got me
some more reasonable S-meter action. Apparently the S LO should be greater
than S HI in normal operation.
Best wishes,
Chris
Chris,
On older K2s, there is no adjustment for AGC Threshold kike is found
with the newer ones which have a pot to set the AGC Threshold. R1 on the
control board - which is normally adjusted to produce 3.8 volts at CB U2
pin 5.
You can always set the CAL S LO menu parameter and CAL S HI to
Did you check the S meter calibration in the menu?
It could also be the age setting has moved a bit, I find mine is quite
sensitive to that.
Martin, HS0ZED
Sent from my iPhone
> On 27 Aug 2018, at 23:38, Chris Kimball wrote:
>
> Just took out the old K2 from storage and it works great,
Just took out the old K2 from storage and it works great, perhaps better than
my memory of how to us it!
Seems like the S-meter is insensitive. With the Preamp on the meter works
as expected, but otherwise no indication at all, even for signals with very
good S/N.
Is there an adjustment or
Hi K2 builders;
I do have calibrate my S-meter following exactly what is tell in the building
manual.
I do have done this allignement CW normal mode.
What I see while switching between CW reverse and USB and LSB mode is that the
right led indication does not indicate most right on other modes
Jean,
You can adjust the CAL S HI menu in CW reverse or LSB or USB to
compensate for that discrepancy.
If you have a signal generator that produces a 50 microvolt (-73 dBm)
signal, use that to adjust the CAL S-HI menu parameter.
73,
Don W3FPR
On 7/5/2013 4:30 AM, Behiels JeanPierre wrote:
On page 48 of the K2 manual the S-meter alignment is done. I was able to get
the Cal S low done just fine. When I then moved on to the Cal S HI ( with the
RF gain fully counter clockwise) I was not able go get any segments of the S
meter to light up. I adjusted the VFO full circle and not one
GM OM,
I have gone through the S meter Zero and Sensitivity a couple of times and am
sure I'm doing it BTB, but indications of incoming signals seem low to me.
Signals that I think should be a least a 7 or even a 9 are indicated as a 2 or
3? I even put the DSP in bypass before calebrating the
Mike,
First make sure you have the RF Gain set fully clockwise, and then
adjust the AGC Threshold to 3.8 volts or a little lower (never higher).
The adjust CAL S-LO with no antenna connected just to the point where
there are no bars illuminated in any mode.
Now, if you have a source of 50 uV RF
Mike,
I forgot to add that for best results, do those adjustments on 40 meters
with the preamp OFF.
You will then find the readings are about right for those bands where
you would normally use the preamp (20 meters and above).
73,
Don W3FPR
On 7/30/2011 1:43 PM, Don Wilhelm wrote:
Mike,
Dear OM's,
thank you for reading this.
Yesterday I finished the control board, the front panel board and
the first stage of the RF-board - ready for the alignment, part 1.
Yesterday I did all the steps from the manual, alignment part 1
sucessfully - even the S-Meter alignment and
Geunther,
The most likely cause of bargraph LEDs not lighting is an intermittent
soldering connection, and since some LEDs light while others do not, the
problem is most likely found on the Front Panel board.
I would suggest you re-flow the soldering of Front Panel U4, RP2, R12,
and the
Turned out to be that I had the graph in dot mode
Thanks
Don
W4DHH
--- On Thu, 7/1/10, Don Wilhelm w3...@embarqmail.com wrote:
From: Don Wilhelm w3...@embarqmail.com
Subject: Re: [Elecraft] K2 S-Meter LED Question (Alignment and Test Part II)
To: Don Herring dhherr...@bellsouth.net
Cc
Greetings.
My other e-mail addy doesn't appear to be working, so I'll try another..
I'm at the Alignment and Test Part II of my K2 build, and everything
appears to be well with specs.
I've completed the process through the BFO Test, and have stopped at the
BFO alignment (was getting
Don,
I would suggest you first look for a solder bridge in the vicinity of FP
DS2 (the LED array) pin 20 and/or U4 pin17. There are via holes on the
board between those location which are also potential places for solder
bridges.
If you find nothing in that search, then the most likely
On Dec 8, 2009, at 11:16 AM, Sergey Dan wrote:
Do I need to see S meter reading changes when choosing between ATT and
PRE ?
Yes, you should definitely seen significant S meter reading changes when
cycling through the Attenuator to the Preamp.
Bill Coleman, AA4LR, PP-ASELMail:
Do I need to see S meter reading changes when choosing between ATT and
PRE ?
Thanks
Sergey 4Z5TV
--
View this message in context:
http://n2.nabble.com/K2-S-meter-readings-tp4133464p4133464.html
Sent from the Elecraft mailing list archive at Nabble.com.
Sergey,
You can have the K3 S-meter either way you want. In ABS (absolute)
mode, there will be no change with use of the attenuator and preamp.
In the NOR (normal) position, there will be a change.
73,
Don W3FPR
Sergey Dan wrote:
Do I need to see S meter reading changes when choosing between
On the K2, yes if it is adjusted properly.
John
At 09:16 AM 08/12/09, you wrote:
Do I need to see S meter reading changes when choosing between ATT and
PRE ?
Thanks
Sergey 4Z5TV
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Hello. I'm building K2 #6761 and have reached the first operational
checkpoint. My K2 started right up and works normally except for S-meter/LED
display problem I describe here.
When working through the first S-meter alignment, I find that the LED display
behaves erratically. First, it only
Doug,
The most common cause for behavior of that nature is bad solder
connections. I suggest you reflow the soldering on the front panel
board with an iron temperature between 700 and 750 deg F.
Especially check (or reflow) the soldering at Front Panel RP2, the LED
bargraph, R12 and U4.
Gary Marks wrote:
The forth step says: Turn RF Gain fully counter-clockwise. Adjust the
VFO knob until bargraph segment 9 lights, then turn it a bit more
counter-clockwise until segment 10 just turns on (right-most
segment).
Question: Should this have said RF Gain instead of VFO knob ?
Under S-Meter Alignment:
The forth step says:
Turn RF Gain fully counter-clockwise. Adjust the VFO knob until bargraph
segment 9 lights, then turn it a bit more counter-clockwise until segment 10
just turns on (right-most segment).
Question: Should this have said RF Gain instead of VFO knob ?
No this is the VFO knob... turning the VFO knob when calibrate the S HI
and S Lo paramater should be use to adjust the bar led display for
proper receivng indication. If turning the VFO knob does nothing, you
should probably have something wrong...
Gary Marks a écrit :
Under S-Meter
Gary,
You missed one prior step - enter the menu and edit 'CAL S Hi' first, and
then the VFO knob should work as described - you should see a display like
'S HI 018' (the number will change as you rotate the VFO knob).
73,
Don W3FPR
-Original Message-
Under S-Meter Alignment:
The
I should have done as in the first stepafter entering the menu again and
selecting CAL S HI, I should have done:
Hold EDIT a second time to activate it. That sentence wasn't in the manual
and I'm just learning the procedures with this rig. Everything checked out
OK. On to Assembly, Part II.
S-meter alignment... Page 47, I've been through it but it doesn't seem
to give me a useful range, I feel it should be peaking when I tune a
strong signal and dropping off when there's just background noise. I
have XG1, can tune it, can adjust CAL S HI to S9, but then just about
everything seems to
Nick,
Yes, you set CAL S Lo with the antenna removed.
The order of adjustment is: 1) AGC Threshold, 2) CAL S-LO, 3) CAL S HI. You
may have to cycle through 2 and 3 a couple times, there is a small amount of
interaction.
When setting CAL S HI, first set it for full scale deflection, and then
I have an XG-1 and have calibrated my K2 accordingly. Sometimes, I run
without the PREamp and this morning decided to
see what effect that has on S meter readings so I could give more
reasonable reports. I know a bunch of you have already
done this but for what its worth:
(Originally sent without a Subject)
I'm not sure whether this is a problem or not but after performing the S-meter
alignment on p. 47 of the K2 assembly manaual, the tenth bargraph LED stays
lit. It is lit whenever I turn on the rig. The AGC threshold is 3.80 Vdc at U2
pin5. I have completed
Howard,
With regard to S meter readings it does appear at least with my K2 #4168 and
a later K2 #4324 tested a few weeks back that 80, 40, 30, 20 and 17m bands
come out with similar sensitivity in the level required for S9 when switched
to the same mode and bandwidth. For 15, 12 and 10m
Folks,
After playing with the AGC threshold vs. S-9 = 50 uV on several K2s, I can
state that the value of 3.80 volts is only a nominal value, and in my
experience should only be considered as an upper limit. I have found the
proper AGC threshold to range from 3.65 volts to 3.8 volts.
There
I set up my K2 S meter per the manual. It appeared to work normally with S9+
readings on loud signals. I then borrowed an X-gen and used it to calibrate
the S-Meter readings. The calibrated settings were much lower than the per
manual settings, i.e., a signal that was S-9 would read, after
Howard:
The standard means given in the manual for setting the S meter
produces settings that are generally low, i.e., readings that ought be
S9 tend to register much lower than S9. Many people have simply goosed
up their settings so that signals they feel should be S9 register as
such.
Be sure to turn the RF Gain fully clockwise and counterclockwise as
describe in the manual when ajusting S Lo and S Hi.
Le 04-07-02, à 23:57, David N. a écrit :
Hello all I am at the test 1 phase of the build
The problem I am having is that when I set the Slo or
SHi the far right dot is the
Hello Jean-Francois,
Also, be sure that the AGC is in fact turned ON. To be certain that it's
on, simply tap the AGC button once. If it was previously off, that will
turn it on, and if it was on already, it will simply change the AGC
time-constant from either fast to slow, or the other way
It's not me that have problem... it's David KR4OW
Mine works fine, really fine !!!
Le 04-07-03, à 15:41, Dale Boresz a écrit :
Hello Jean-Francois,
Also, be sure that the AGC is in fact turned ON. To be certain that
it's on, simply tap the AGC button once. If it was previously off,
that
Hello all I am at the test 1 phase of the build
The problem I am having is that when I set the Slo or
SHi the far right dot is the only one lighting up.
It says in the manual that (Slo) the far left led
and it is on 10. I double checked my agc and it is at
3.80 so that is not in question is
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