At the antenna spigot.
On 1/23/2019 10:00 AM, Phil Hystad via Elecraft wrote:
If I had an S-meter reading, S9 for example, on my K3, what could I infer about
the voltage level of that signal at the Coax input to my K3?
A table I found on the Internet for singals below 30 MHz says that an S-9
Phil,
With the original K3, S Meter "ABS" mode the S meter is referenced to
the signal level at the antenna jack. S9 = -73 dBm = 50 uV into 50 ohms.
In the other S Meter mode, the reading varies with ATT and PRE settings,
as well as signal level.
73,
Lyle KK7P
On 1/23/19 10:00 AM, Phil
1st thing is to set the RF gain to max,
check in:
Config SMTR OF 024
SMTR SC 014
SMTR MD NOR when pre amp or attn is used it will effect the S
meter,
if you don't want it to change set to
ABS
Ed KD7PY ex K7WIA
--
View
Exactly the way it should be, Arlen. You do NOT have a problem.
Congrats, de Milt, N5IA
-Original Message-
From: Arlen Fletcher
Sent: Friday, April 04, 2014 9:24 PM
To: Elecraft Mailing List
Subject: [Elecraft] K3 S-meter question
I’ve just completed building my K3/10 (S/N 8115)!!!
This is typical of HF receivers from years past-- meter indicates
increasing AGC as you reduce the RF gain; only stronger signals will
flicker above the meter's reduced sensitivity indication.
Supposedly this could be changed in a SDR radio. Some have requested
that the meter not respond in this
Yeah, this is normal behavior.
Same thing happens on my 857D and all other's radios (i hear).
You didn't do anything wrong.
Slava, W2RMS
On Apr 5, 2014, at 8:22 AM, drewko drew...@verizon.net wrote:
This is typical of HF receivers from years past-- meter indicates
increasing AGC as you reduce
As you back off the RF Gain (CCW), the minimum signal that can be
copied and that registers on the S Meter is a higher value. With the
RF Gain set fully CW (greatest gain), you're copying the weakest
signal the rig is capable of. These differences are shown by the S
Meter.
You should run RF
Ah!!! That makes sense. Thank you Matt, and all those that responded. I
appreciate your attempts to educate me. :-)
73
Arlen AA7F
On Apr 5, 2014, at 7:38 AM, Matt Zilmer mzil...@roadrunner.com wrote:
As you back off the RF Gain (CCW), the minimum signal that can be
copied and that
check out SMTR MD in the manual
(Advanced) S-meter mode: When set to NOR, preamp/attenuator on/off will
affect the S-meter. (The default values of SMTR OF and SMTR SC apply to
NOR.) If set to ABS, the S-meter reading will stay fairly constant with
different
preamp/attenuator settings, but
Jay,
Normally, the preamp and attenuator will change the S-meter reading. If
you do not want that to happen, go into the menu and change to SMTR
ABS. I suggest (contrary to the manual suggestion) that you calibrate
the S-meter with the preamp and attenuator both off before setting SMTR
Don,
I always seem to have my RF gain adjusted by ear to below where the
s-meter will deflect on a particular signal. So I will most always
have to readjust the gain to see an s-meter reading. The RF gain can
be adjusted much lower than the signal's meter deflection point but
still have an
Drew,
The S-meter operates off the AGC voltage and cannot be controlled in the
firmware. The result is that you will have to put up with it Most all
receivers have done the same thing in my 50+ years of hamming.
What I can say is is that if you reduce the RF Gain to eliminate the
band
Toby,
Different hardware, not dependent on the AGC for S-meter indications.
73,
Don W3FPR
On 3/6/2013 7:57 PM, Toby Pennington wrote:
Don, while that may be true, I wonder how Ten Tec was able to reverse the
way the Orion 2's S-Meter works going from a deflected Rf gain to one that
RST is not a reflection of S-METER readings at all. It is a means of
describing the quality of a received signal, not just the strength.
Furthermore Amateur radio manufacturers (not Elecraft) are notorious
for not following the 50 microvolts = S9 rule, so S-meter readings
are meaningless as
...@mailman.qth.net] On Behalf Of Tom H Childers
Sent: Tuesday, March 05, 2013 1:46 PM
To: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S-Meter
RST is not a reflection of S-METER readings at all. It is a means of
describing the quality of a received signal, not just the strength.
Furthermore
...I would like to see the RF gain ride the signals instead of deflecting.
I don't understand.
The S-meter usually indicates the AGC voltage.
I like it the way it is.
Ralph, VE7XF
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Optional?
Sent from my iPad
Chuck, KE9UW
(Jack for BMW motorcycles)
On Mar 4, 2013, at 2:29 PM, Ralph Parker ve...@dccnet.com wrote:
...I would like to see the RF gain ride the signals instead of deflecting.
I don't understand.
The S-meter usually indicates the AGC voltage.
I like it
On the contrary, one can give an honest report even with the RF gain
reduced (but only under certain circumstances).
If one has reduced the RF gain to the point (just) where the S-meter
deflection is at the noise floor, then the S-meter readings should still
be valid - you are simply reducing
HI
I also don't use it for the same reason. Of course, if this can be improved
that's fine !...
73, Laurent
-
Laurent F6DEX
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-S-Meter-tp7568712p7570250.html
Sent from the Elecraft mailing list archive at Nabble.com.
Hi Eric,
thanks for jump in here. Gary already contacted me and told me to do the
whole recalibration when i want to use the peak-hold function. I decided now
to not use this feature because when i want to switch it off i`ve to do that
again...
73 and many thanks for the fast support...
Michael
DL5OCD == DL5OCD metamo...@t-online.de writes:
DL5OCD Hello together,
DL5OCD i observed when i activate the peak-hold function of the
DL5OCD S-Meter that one
DL5OCD bar is added to the signal (the hold dot). So the meter
DL5OCD shows abt 5db too
DL5OCD much...anyone
Running 4.58 and mine does the same. I set the service monitor down to
S-9, and then set the P3 to -73 dBm, but finally decided I didn't like
peak-hold, and put it back.
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2013 Cal QSO Party 5-6 Oct 2013
- www.cqp.org
On 1/15/2013
OK, many thanks. So it seems more like a bug than a feature...i`ll forward
this to k3-support.
73
Michael
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-S-Meter-tp7568712p7568716.html
Sent from the Elecraft mailing list archive at Nabble.com.
No need to contact support. This is the way is has acted since the
beginning.
73,
Eric
---
www.elecraft.com
On 1/15/2013 2:05 PM, DL5OCD wrote:
OK, many thanks. So it seems more like a bug than a feature...i`ll forward
this to k3-support.
73
Michael
Eric Swartz - WA6HHQ, Elecraft e...@elecraft.com wrote:
No need to contact support. This is the way is has acted since the
beginning.
73,
Eric
---
www.elecraft.com
On 1/15/2013 2:05 PM, DL5OCD wrote:
OK, many thanks. So it seems more like a bug than a feature...i`ll
forward
this to
Of Bruce Beford
Sent: Thursday, August 11, 2011 2:54 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S meter oddities
When I plug my headphones into the K3 the S Meter jumps up about 5 s
units. This unit is running 4.31 FW. I obviously have not tried new
4.39.
Just curious
Does it do it with both headphone jacks, or just the front, or just the
rear?
73,
Lyle KK7P
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Post:
Mike,
My K3 has done this for quite some time. I currently have 4.36 loaded, but
it was there long before that. I put it on the reflector before, but I
never could get a resolution to it. I'm all ears on this.
73,
Phil, NS7P
-Original Message-
From: elecraft-boun...@mailman.qth.net
Interesting. I am using a K3 without the 2nd receiver at the moment.
The full blown K3 is up in Montana. This was my 2nd SO2R rig. I kept
looking over and wondering what was causing so much noise on the band
but there is no noise just the s meter reading oddly.
Using the Heil Quiet Phone
When I plug my headphones into the K3 the S Meter jumps up about 5 s
units. This unit is running 4.31 FW. I obviously have not tried new
4.39.
Just curious if anyone else has seen this.
Mike W0MU
My K3 s/n 559 running 4.39 does -not- exhibit this behavior. As far as I can
recall, it
Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net]On Behalf Of Bruce Beford
Sent: Thursday, August 11, 2011 2:54 PM
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S meter oddities
When I plug my headphones into the K3 the S Meter jumps up about 5 s
Beford bruce.bef...@myfairpoint.net;
elecraft@mailman.qth.net
Sent: Thursday, August 11, 2011 7:44 PM
Subject: Re: [Elecraft] K3 S meter oddities
It actually does it with a blank phone plug inserted. As soon as the plug
goes in, the S meter jumps up. The signal itself does not change, just
Never on K3/100 S/N 642 [just loaded 4.39]. I use the rear headfone and
mic jacks exclusively ... putting them there in addition to the front
panel was a genius moment!
73,
Fred K6DGW
- Northern California Contest Club
- CU in the 2011 Cal QSO Party 1-2 Oct 2011
- www.cqp.org
On 8/11/2011
John - I would say that if it is just flickering on and off that is
exactly right. It does at least show that the receiver is live and the
residual noise is registering on the S-meter. Perhaps if you shorted
ANT1 to ground the flickering might reduce.
Personally, if my S-meter did not
Hello John!
In ABS mode this is normal. It is a consequence of offsets the DSP is
doing to account for the settings of ATT and PRE, along with the method
used to pass S Meter information to the MCU.
73,
Lyle KK7P
After the RF calibration, I re-did the S-meter calibration using the XG3,
Thanks Lyle and David. Sounds all's configured OK then. I'll get back to
playing with my K3.
73,
John
VK7JB
--
View this message in context:
http://elecraft.365791.n2.nabble.com/K3-s-meter-calibration-parameters-and-flickering-S1-tp6418969p6420986.html
Sent from the Elecraft mailing list
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Alan Bloom
Sent: 06 May 2011 23:00
To: Jim Miller KG0KP
Cc: Elecraft Reflector
Subject: Re: [Elecraft] K3 S meter vs P3 S scale
The reason the P3 reads lower than the K3 on noise
] K3 S meter vs P3 S scale
The reason the P3 reads lower than the K3 on noise or SSB signals is
that each display point on the P3 screen covers only a small bandwidth.
As explained in the manual, each display point is about 1/450 of the
span. For example, if the span is 45 kHz, then each
Good Morning Jim,
First, go to the Elecraft web site and verify that you have the latest version
of the firmware for the K3 and P3. If you don't have it installed, install it.
You do need to calibrate the P3 and the K3 S-Meters. To do this you will need
an XG1, XG2 or XG3. Either will work.
On a steady carrier (i.e. from a signal generator), both the P3 and K3
should read the same. My P3 reads much lower on actual signals than the
K3, it is especially noticeable on SSB signals. Calibrating on a signal
generator doesn't alter the lower reading of a P3 display on SSB
signals. The
There will also be a difference on anything but a steady state carrier unless
the P3 is in 'peak' display mode. An averaged SSB signal will show a lower
reading on the P3 than the S-meter, for example.
Grant/NQ5T
Sent from my iPhone
On May 6, 2011, at 9:45 AM, n...@n5ge.com wrote:
Good
If you have the P3's AVERAGE enabled, it can lower the peak shown on
the P3. If at the same time, you have CONFIG:SMTR PK turned ON, there
will probably be a significant difference between the two indicated
levels. The K3's S-Meter will hang on the peaks for a short time,
maybe long enough for
On 5/6/2011 7:52 AM, Matt Zilmer wrote:
If you have the P3's AVERAGE enabled, it can lower the peak shown on
the P3.
This is entirely normal behavior. I have my S-meter set to read peaks
and use it to give signal reports, but I set the P3 to very heavily
average what it sees. This smooths out
The reason the P3 reads lower than the K3 on noise or SSB signals is
that each display point on the P3 screen covers only a small bandwidth.
As explained in the manual, each display point is about 1/450 of the
span. For example, if the span is 45 kHz, then each display point only
covers about 100
When an SSB signal is S9, that means that the total power in the ≈ 3 kHz
bandwidth, added up, is equal to S9. The voice power is spread out across 3 kHz
of bandwidth and has to be integrated, or summed, in that bandwidth before
comparing to an S-meter reading.
Therefore, the amplitude of any
THANKS everybody. Some very good definitions. I didn't think anything was
really broken and sisn't really believe it was out of calibration either but
jsut did not understand wht appearant difference. Good to know that all is
well.
Thanke es 73, de Jim KG0KP
I need coffee!! 73, de Jim KG0KP
- Original Message -
From: Jim Miller KG0KP jimmil...@stl-online.net
To: Elecraft Reflector elecraft@mailman.qth.net
Sent: Friday, May 06, 2011 4:45 PM
Subject: Re: [Elecraft] K3 S meter vs P3 S scale
THANKS everybody. Some very good definitions. I
I wonder if there is any way the P3 could do this ?
Convention has the P3 displaying signal strength v frequency. Could it show
signal strength v time ?
John G4ZTR
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Richard
What are you monitoring? If it is cw then the Reverse Beacon network is
always monitoring the signal and you can search all the different
receivers around the world and compare the signals received.
reversebeacon.net
On 4/5/11 12:50 PM, John Lemay wrote:
I wonder if there is any way the P3
, 2011 8:50 PM
Subject: Re: [Elecraft] [K3] s-meter data logger software available?
I wonder if there is any way the P3 could do this ?
Convention has the P3 displaying signal strength v frequency. Could it
show
signal strength v time ?
John G4ZTR
-Original Message-
From: elecraft
John,
The color variation in the waterfall display already indicates signal
strength over time.
73,
Don W3FPR
On 4/5/2011 2:50 PM, John Lemay wrote:
I wonder if there is any way the P3 could do this ?
Convention has the P3 displaying signal strength v frequency. Could it show
signal
Mike,
I am trying to measure background noise on 75 meters in my city
location. The noise level in the city is 20dB higher than in my rural
location so I think it must be coming from local companies. I want to
plot the noise level over several days to separate ionospheric noise
from local
While tuned into a signal on the Sub RX, do a hold on BSET. This will
give you the S meter reading for the Sub RX tuned to the frequency in
VFO B. This is also how you do other Sub RX settings, such as
ATT/PRE. See page 37 in the manual, available in PDF format on the
Elecraft site.
You should
Thanks to K2AV and G0AFH for how to get the sub-Rx s-meter
readings. Also advice on RF gain Calib. on both Rx.
This was just a preliminary set up to get things close for a starting point.
As it turns out I got the two Rx within 1/2 s-unit of equal using
ambient noise: Main Rx (Vpol) = S7;
My reply got sent before inserting the link:
http://www.kl7uw.com/DEMI144-28DRX.htm
73, Ed - KL7UW, WD2XSH/45
==
BP40IQ 500 KHz - 10-GHz www.kl7uw.com
EME: 144-1.4kw, 432-100w, 1296-testing*, 3400-winter?
DUBUS Magazine USA Rep dubus...@hotmail.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S meter calibration
Mines' the same, about S4/5 maximum. Pity, works great otherwise.
73
Roger MW0IDX
K3 #191 K2 #2724 KX1 #416
Hi Georges,
Like you I cannot fathom why the K144XV is so low in it's received signal
strength, I too see
, 2011 8:03 AM
Subject: Re: [Elecraft] K3 S meter calibration
It hasn't always been like this and I'm sure there will be a software fix.
I hope it's on the Elecraft to do list ?
John G4ZTR
Mines' the same, about S4/5 maximum. Pity, works great otherwise.
73
Roger MW0IDX
K3 #191 K2 #2724
Mines' the same, about S4/5 maximum. Pity, works great otherwise.
73
Roger MW0IDX
K3 #191 K2 #2724 KX1 #416
Hi Georges,
Like you I cannot fathom why the K144XV is so low in it's received signal
strength, I too see no better than S3-S4 on signals that on all other radios
are S9-S9+.
I
was there, but the QRN was keeping him from having clear copy
of it. With your method and a loud noise floor I would have most
likely got a 419 instead.
Date: Thu, 15 Jul 2010 06:58:27 -0700
From: reh...@ix.netcom.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S Meter behavior
...@comcast.net
CC: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S Meter behavior
Robert,
You are relying on your S-meter too much IMHO.
Yes, all that has nothing to do with the actual reading of the S-meter,
but it is just good operating sense.
just ignore the reading and give signal
: Re: [Elecraft] K3 S Meter behavior
Robert,
You are relying on your S-meter too much IMHO.
Yes, all that has nothing to do with the actual reading of the S-meter,
but it is just good operating sense.
just ignore the reading and give signal reports as you hear
them - 59 (or 599
Thanks all for your comments. It's nice to get so much feedback so fast!
While I'm not very concerned about this, I do like to use my S meter to give
the Strength report and believe that an S7 signal should read S7 even if the RF
gain is turned down a bit (just for info, I set the S meter to
Don, I don't see that to be the case. The action of the s-meter in ABS
mode does change when the RF Gain has been reduced. If you turn the RF
Gain to 12 o'clock the s-meter goes to S9+30db.
73,
Drew
AF2Z
On Wed, 14 Jul 2010 23:34:22 -0400, Don W3FPR wrote:
Robert,
The K3 does have a cure,
The way I understand it, turning donw the RF Gain does not improve
the signal's s-meter strength. The increasing level of the s-meter as
you reduce the RF Gain indicates the level that a signal would need to
attain in order to be heard. For example, if you turn the RF Gain to
12 o'clock you will
I don't really understand, but would be interested in more discussion on
this. I think I understand that the apparent power of a signal to your
ears/brain may vary even though the actual received power is the same.
Commercials on TV seems much louder than the shows these days, but I'm
hearing
...@embarqmail.com
To: Robert Mitilieri - N9EF n...@comcast.net
Cc: Elecraft@mailman.qth.net
Sent: Thu, July 15, 2010 12:30:07 AM
Subject: Re: [Elecraft] K3 S Meter behavior
Robert,
You are relying on your S-meter too much IMHO.
If you have an S-3 noise level, the first attack is to turn off
exactly where you're
headed!! Susan Meckley, Skipper W7KFI-mm AFA9SM USSV
DHARMA
--- On Thu, 7/15/10, Richard Hill reh...@ix.netcom.com wrote:
From: Richard Hill reh...@ix.netcom.com
Subject: Re: [Elecraft] K3 S Meter behavior
To: elecraft@mailman.qth.net
Date
I do understand that my statement below may not make sense for digital
modes grin.
Rich
NU6T
On 7/15/2010 6:58 AM, Richard Hill wrote:
I don't really understand, but would be interested in more discussion on
this. I think I understand that the apparent power of a signal to your
ears/brain
TheSmiths said:
559 still MEANS Receive Excellent, Signal 5 S UNITS, Tone Excellent.
Actually, this statement is inaccurate and the RST code never specifies S
meter readings but this perception is a common misconception.
559 means Readability Excellent, Fairly Strong
counts,
not on how to read an S meter.
Date: Wed, 14 Jul 2010 23:27:40 -0700
From: xda...@cis-broadband.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S Meter behavior
Just curious ... how do you factor in the uncertainty of the gain/loss
of your antenna and any
-broadband.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S Meter behavior
Just curious ... how do you factor in the uncertainty of the gain/loss
of your antenna and any impact of its pattern, both bearing and azimuth
relative to the actual arrival angle, while you're trying
Personally, I would prefer that the s-meter not operate in this way in
ABS mode. RF Gain should have no effect on the s-meter action when in
ABS mode, just as ATT and PRE do not.
It would probably screw up (highly technical term) how the system works, or
require a separate receiver just for
Actually the S meter is used so the Strength of the signal report is *not*
subjective, that's reserved for Readability. I firmly believe that the Strength
report must *not* be subjective, why else ever put a meter to measure signal
Strength? In the case of signal Strength we *must*
strength was there, but the
QRN was keeping him from having clear copy of it. With your method and a loud
noise floor I would have most likely got a 419 instead.
Date: Thu, 15 Jul 2010 06:58:27 -0700
From: reh...@ix.netcom.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S
adjustments. Or you
can just think of it as a little less ATT..
Date: Thu, 15 Jul 2010 06:59:37 -0700
From: n...@bellsouth.net
To: d...@w3fpr.com
CC: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S Meter behavior
Don
I performed both functions and they pretty much delivered
Has there -ever- been a subject in ham radio that's
generated as much argument and discussion over
the years? I think not.
73! Ken Kopp - K0PP
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Help:
radio has to be
forced until the world ends. Much to some peoples Chagrin, we DO evolve as ham
radio operators.
From: n...@comcast.net
Date: Thu, 15 Jul 2010 11:38:09 -0500
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S Meter behavior
Actually the S meter is used so
Regardless of the fact that in 1934 (as was indicated to me in off
reflector email) we used to not use the meter for the S report, at some
time (1970's when proper calibration and standardizations' came about) we
were able to shift that OLD antiquated 1934's definition over to a
On Jul 15, 2010, at 12:52 PM, Tom W8JI wrote:
There may be a standard some people believe in, but it is a paper
standard that never took hold.
I always thought the standard was you're 5x9 here OM, and please repeat your
call, QTH and my signal report :-)
Grant/NQ5T
As this drifts further from the original topic...
I find it amusing that a station will ask me to repeat my callsign and name
several times, and then give me a 59 report.
I think I messed up several people over the weekend contest by giving them 5-7
08 reports instead of what they expected.
This topic has easily exceeded the 'Too many postings' limit. Time to
end this topic for now.
In the future, on a high volume topic like this, please self regulate. :-)
73, Eric WA6HHQ
Elecraft List modulator
__
Elecraft mailing
was there, but the
QRN was keeping him from having clear copy of it. With your method and a loud
noise floor I would have most likely got a 419 instead.
Date: Thu, 15 Jul 2010 06:58:27 -0700
From: reh...@ix.netcom.com
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S Meter behavior
I don't
: Re: [Elecraft] K3 S Meter behavior
Just curious ... how do you factor in the uncertainty of the gain/loss
of your antenna and any impact of its pattern, both bearing and azimuth
relative to the actual arrival angle, while you're trying to accurately
tell the guy on the other end how
reading I know
approximately how well I'm doing at his QTH given the idea I know HIS antenna
set up, and Mine. That's good enough for me.
From: w...@w8ji.com
To: elecraft@mailman.qth.net
Date: Thu, 15 Jul 2010 13:52:29 -0400
Subject: Re: [Elecraft] K3 S Meter behavior
Regardless
...@w8ji.com wrote:
From: Tom W8JI w...@w8ji.com
Subject: Re: [Elecraft] K3 S Meter behavior
To: drewko drew...@verizon.net, The Smiths notforc...@hotmail.com
Cc: Elecraft@mailman.qth.net
Date: Thursday, July 15, 2010, 6:27 AM
Personally, I would prefer that
the s-meter not operate in this way
Amen!
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of ussv dharma
Sent: Thursday, July 15, 2010 2:36 PM
To: drewko; The Smiths; Tom W8JI
Cc: Elecraft@mailman.qth.net
Subject: Re: [Elecraft] K3 S Meter behavior
Aloha Peoples
Robert,
That is just the way the S-meter response works - it is the same on many
receivers - the S-meter will indicate higher when the RF Gain is reduced.
The K3 does have a cure, and that is to set the S-meter to ABS
(absolute) in the Configuration Menu (see the manual). With that
setting,
Increasing the RF gain does deflect the meter upwards. I should have mentioned
that there is an S3 noise floor. Here's the steps that I followed:
Tune a signal that's peaking S7 with RF gain fully CW
Tune away from any signal (S3 noise) adjust the RF gain CCW until the meter
reads S5
Tune that
Yes it does with respect to RF gain.
--- On Wed, 7/14/10, Don Wilhelm w3...@embarqmail.com wrote:
The K3 does have a cure, and that is to set the S-meter to ABS
(absolute) in the Configuration Menu (see the manual). With that
setting, the S-meter does not change with the PRE/ATT/RF Gain.
Robert,
You are relying on your S-meter too much IMHO.
If you have an S-3 noise level, the first attack is to turn off the
preamp - if that does not reduce the noise level enough, then turn the
Attenuator ON.
If the noise level is still so high as to be bothersome, turn the RF
Gain control
Hi Philippe,
I think that instruction is in error. I adjusted mine with both the
preamp and the attenuator OFF. Makes more sense that way. Turn
CONFIG: SMTR MODE to nor. Turn preamp and attenuator OFF, and then
adjust your S meter. Now if you decide to turn SMTR MODE to ABS,
you'll
The manual is correct if you wish to use nor mode for the S Meter.
If you wish to use ABS mode, then you need set PRE OFF and ATT OFF
before adjusting CONFIG: SMTR SC and CONFIG:SMTR OF. In this case, with
no sig gen attached, the lowest S Meter bar may flicker or be on. On
both of my K3s
The manual is correct if you wish to use nor mode for the S Meter.
If you wish to use ABS mode, then you need set PRE OFF and ATT OFF
before adjusting CONFIG: SMTR SC and CONFIG:SMTR OF.
To be clearer, if you calibrate according to the manual and *then*
select ABS mode, the S meter will
A couple of years ago there was some correspondence on the reflector about
whether an S unit is 6db or 4 db and there appears to be historical
precedent for both but I have looked at the archive and can't find where it
rested as far as the K3 is concerned. It occurred to me while recently
Geoffrey Downs-2 wrote:
A couple of years ago there was some correspondence on the reflector about
whether an S unit is 6db or 4 db and there appears to be historical
precedent for both but I have looked at the archive and can't find where
it
rested as far as the K3 is concerned. It
I calibrated the S-meter to 5 dB per S-unit because then the divisions
represent 5 dB both above and below S-9. This is easy to remember and it also
seemed to allow quite good linearity all along the scale. As has been pointed
out, there is no standard so a choice of 5 dB/unit is as valid as
Hmm, have you checked the calibration above S9? If you compress the scale
below S9 to 5dB per S-unit, the scale above S9 is likely to be compressed
also, to something like 8.5dB per 10dB division.
AB2TC - Knut
Al Lorona wrote:
I calibrated the S-meter to 5 dB per S-unit because then the
Geoff saidFor practical purposes S3 is probably close enough rather than
about S2 or 3 as shown in the manual. Or is it more complicated than that?
Geoff, lets do the math...
S-9 is 50 uV at the antenna terminals by convention
1 uV is equal to 20 * log (1/50) = -33.98 dB below S-9
Say we
No standards. There is no international body in charge of the definition of
an S-unit.
Just history.
Somewhere I have a .jpg file from an ebay posting of a lovely pristine 30's
receiver with an S meter that showed S units on top side of scale, and dB's
on the bottom side. 6 db per unit.
The
Dears
I've seen on the manual S9 /50 microvolts is adjusted with Preamp ON .
As a new Elecrafter I need some explanations, because with my previous rigs, I
use to calibrate S9 without the preamp.
Thanks
Philippe A65BI
K3 #3616
Bill W4ZV btipp...@alum.mit.edu 17-11-2009 22:25
Geoffrey
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