I suspect there's something wrong with the CM500 you have.
It certainly does not appear to have any problem other than
being extremely flat to the point of muddy. With heavy EQ
and aggressively cutting the bottom end, the CM-500 is capable
of excellent sounding audio. However, I would
(Note this is a peer support mailing list, not Elecraft support,
although is probably the right place.)
The diffuser has symmetry class 2, so it is not possible to put it in
the wrong way round. a is anode, and therefore positive, and k is
cathode, and therefore negative.
Foxjazz wrote:
Don,
Thanks for your reply.
It may be too that your DMM is using a higher than normal voltage
to
measure resistance (which can turn on active devices),
As I don't have another DMM at hand, I did something different. I
found a junk box 680 ohm resistor, measured it (682) and measured
the
Quote 1:
I don't know where you get 6mm from. The spacers are 19mm long, and
standard PCB thickness (~1.5mm) thick. Two spacers on top of each other
give 3mm. I had no problem with that part of the instructions. Note
that the spacers are part of the final assembly.
Quote 2:
With the parts
1ppm relative to 10mHz is 10nHz (unless you are a PC salesman). There
are aspects of amateur radio in which mHz are a useful unit.
lstavenhagen wrote:
Just refreshing my 6th grade education here: 1 ppm variation at 10 mhz would
be +/- 10 hz correct? I calibrated my K3 ref. osc. again
Jeff, you will probably need a pre-amp with the K3. My experience of 6m
over the past 3 or 4 years with a 4 ele quad is that many signals are
very weak and the K3 lacks the sensitivity to deal with them unless you
either add a pre-amp or have a high level of local noise masking those
signals.
I suspect the original writer is being confused with the correct
designation of the units involved in the query. One PPM is equivalent
to 1 hertz per megahertz. Stability specifications for amateur radio
equipment are frequently stated in reference to 1 megahertz. In such a
case, 1 PPM
For my CM500 I have my K3's EQ set to:
Band +/-
10
20
3 -6
4 -6
5 -10
60
7 +4
8 +8
Aside from the mic being a little hot (no close-talking allowed) the TX
audio sounds great. It sounds good to me in the
This is an excellent thread, and one that I would like to see continued. I
use the K3 exclusively on 6 meters right now. I work both SSB and CW during
sporadic-E conditions and WSJT digital modes on meteor scatter at other
times when the band is dead. Eagerly anticipating some F2 on the band in
Many newer folks may not even know what
youp means. These days just about any rig worthy of the name newer
than 20 years old is rock solid from turn on +1 minute. And quite a
number, rock solid from turn on plus 10 seconds. Try that with the old
Hallicrafters with the valve handwheel knobs where
Foxjazz,
The spacers are 19 mm *long* and 1.5 mm *thick*.
Stack two of them to obtain 3 mm.
The backlighting diffuser is mounted 3mm from the board to the bottom of
the diffuser.
The LCD goes above the diffuser - see Figure 5-11.
73,
Don W3FPR
Foxjazz wrote:
Hello Elecraft,
I am
I was going to also say to make sure you look at the errata. The method used
to install the diffuser is different in the errata than the one in the
manual. (i.e. the old way, you put the spacers on the diffuser leads
themselves and they stay there after installation, the new way you put them
G'day,
No big deal but to avoid any confusion the archived mail quoted is
rather a hybrid, the analysis is my observations on reception of the
BA beacon.
Not been listening on 6M much just lately because the coax for the
beam has been diverted to a temporary 80M dipole, soon to come down.
I
- Forwarded Message
From: jerry kethcart jkethc...@centurytel.net
To: undisclosed-recipi...@yahoo.com
Sent: Fri, April 2, 2010 7:55:56 AM
Subject: Fw: I was kicked out of biology class
I always tried hard in school, but I
Don,
Thanks for your reply. Initially I had used a second receiver to align the K1.
But it appeared that my trimmers were more than 20 degrees off. So based upon
your suggestion I reset them and re-peaked. That did the trick! I am now
getting approx 5 watts out on all 4 bands!!!
I
Jorge,
Hopefully I can help - at least I can try!
The RX Ant IN can connect to the main RX
That means the main RX can be switched between RX Ant and the KAT3.
If the TMP cable to the SubRX is plugged into the KAT3, then ---
The SubRX can be switched to share the main RX antenna (whichever that
I would like to apologize for my last post ,it really was an accident.I wasnt
fully awake while i was viewing some in coming emails.It wont happen again i
asure you.
Norm
Kieth,
Glad to hear you have it working.
If your reception gets louder by just gently touching the top of the
case, I would look for a problem in your antenna system - likely a
broken shield connection in the coax. OTOH, if it takes a solid tap to
change the volume, I would look for the
Are you sure you have the correct spacing? I.e. the 2 spacers stacked on top
of each other (flatwise) should fit perfectly under each end of the diffuser
and everywhere underneath it.
The instructions for my LCD were completely spot-on. The leads for the LCD
should just barely go into the holes
It has been said by many hams over the years that if you
connect an antenna
to a receiver and you can hear the noise level increase,
then you don't need
a preamp, as it will simply amplify the noise and the signal
equally. In
general, I've found that to be true. HOWEVER...
Let's say that the
It's been a long time since I've heard hatred and stupidity of that level.
Whoever that is, please don't let them post to this list, please
LS
W5QD
--
View this message in context: http://n2.nabble.com/joke-tp4842752p4843026.html
Sent from the Elecraft mailing list archive at Nabble.com.
Bob,
For my CM500 I have my K3's EQ set to:
Band +/-
10
20
3 -6
4 -6
5 -10
60
7 +4
8 +8
Except for bands 1 and 2, the effect of your EQ is very similar
to my DX settings.
DX/
Tentatively, both items are spoken for...
Thanks,
Julius
-
Julius Fazekas
N2WN
Tennessee Contest Group
http://www.k4ro.net/tcg/index.html
Tennessee QSO Party
http://www.tnqp.org/
Elecraft K2/100 #4455
Elecraft K3/100 #366
Elecraft K3#1875
--
View this message in context:
I'm going to violate the Top posting is the rule rule for this one.
--- On Fri, 4/2/10, Bill VanAlstyne W5WVO w5...@cybermesa.net wrote:
Let's say that the noise figure of the receiver's internal
preamp is 1.5 dB,
and the noise figure of the external preamp is 0.5 dB. Each
preamp will give
Folks - Absolute end of thread.
Please, no follow on comments.
Eric
Elecraft List Moderator
On 4/2/2010 8:15 AM, lstavenhagen wrote:
It's been a long time since I've heard hatred and stupidity of that level.
Whoever that is, please don't let them post to this list, please
LS
W5QD
Hello Elecraft,
--
Best regards,
Foxjazz mailto:fo...@foxjazz.net
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Post:
On Thu, 1 Apr 2010 08:22:17 +0200, Pontus Falk pf...@ax25.org wrote:
Thanks to all at Elecraft for the KSUN3 device!
Together with KSPOT3 it makes working DXes a lot more easy,
especially in huge pile ups!
73s de SM0R Pontus
K3 #3893
Aw shoot!
I didn't read my mail yesterday and missed out.
Don,
Wow you are good! I changed antenna's and the change in volume went away. So
I guess I now need to check out that 20 meter dipole (hi hi).
I was able to move the wires around on L1 and now have the following (thank
you).
40: 6.999 to 7.099
30: 10.093 to 10.193
20: 13.993 to 14.093
I said:
I suspect there's something wrong with the CM500 you have.
On Fri, 2 Apr 2010 02:21:24 -0400, Joe Subich, W4TV wrote:
It certainly does not appear to have any problem other than
being extremely flat to the point of muddy. With heavy EQ
and aggressively cutting the bottom end, the
Hello Elecraft,
figure 5-15 doesn't look anything like the front panel assembly
elecraft k2.
Also the gree led cover double-sided tape was 1 sided second part
didn't peel off. So I used glue.
I don't understand how the front panel is attached to the control
board.
--
Best regards,
Been reading with some interest the recent thread about SSB output
coming up after a few seconds. Different situation here with
my K3.
1) Tune up output is a few watts higher than power
setting (as expected).
2) When observing peak output on my LP-100
wattmeter (known to work fine), the peak
The last two weeks of May I will be staying in Denmark and of course I'll
take my K3 with me. Normally there's not much time to play with the radio
but during these two weeks of vacation I will have some time to have some
fun on the bands.
Now, it's not the first time I've been in OZ but recently
I am not sure where you read any reference to Figure 5-15.
All the reflector posts responding to your question referred to Figure
5-11. It is on page 28 (the only figure on that page).
You will get to the part of the build where the front panel and control
board are mounted to the RF board on
Don:
For what it may be worth, I was in contact with Don, N4ZZ, the other day and
he was complaining about a momentary, periodic drop in power output from the
K-3 of approximately 50% while driving his amplifier. He was using the
latest firmware version 3.79. He had not had that problem before.
I have heard people say portable, stroke, and slant. On CW, there's
no confusion (hi), it's dah dih dih dah dit. So, maybe you should just
work CW (only kidding). Probably it's best to say portable, but I think
most people understand the word stroke in that call-sign context. Have
fun.
Rob K6RB
Tom:
The other day I was in contact with Don, N4ZZ, and he was complaining about
a drop in power output from the K-3 of approximately 50% on occasion,
particularly when he was driving his amplifier. He was using the latest
software version 3.79. Although it is not exactly the problem you have
I think you are commenting on the widespread, confusing use of mHz
which literally means milli-Hz. How this unit came to substitute for
MHz is a mystery to me. As an engineer, I tried to use what I was
taught--lower-case multipliers are 1 and upper-case multipliers are 1.
K and k appear to
Hi,
I looked on the Elecraft web sight. I cannot find a KSUNOT3 nor a KSPOT3.
Please just for my info., what are these things.
Thanks N6XVT / Karl 73.
On Apr 2, 2010, at 9:42 AM, Radio Amateur N5GE wrote:
On Thu, 1 Apr 2010 08:22:17 +0200, Pontus Falk pf...@ax25.org wrote:
Thanks to all at
Do you have the right mic selected? If so does the mic your using required a
bias to work correctly?
73 Doug N3QW
- Original Message -
From: br...@brianlinn.com
To: elecraft@mailman.qth.net
Sent: Friday, April 2, 2010 1:51:53 PM GMT -05:00 US/Canada Eastern
Subject:
mHz may or may not be widely used in ham radio, but it is widely used
everywhere else and, IMHO, incorrectly. At least one place in my ham
life where it is used is in the Low Band Monitor published by K0CS.
Garry, NI6T
On 4/2/2010 3:53 AM, Jim Wiley wrote:
I suspect the original writer is
It isn't really correct to say portable if you are actually operating from
a fixed location in the other country.
I suppose you could always take the lead from how web addresses are read out
over the air and say forward slash. :)
-
Julian, G4ILO. K2 #392 K3 #222.
* G4ILO's Shack -
Well, it's too late now, but you have to follow the instructions on the tape
exactly (last step on P. 30) or it would end up a mess. i.e. you have to
peel off one side, attach the tape to the green filter with the other side
of the tape still with the paper on it. Then you can peel the paper off
I believe on voice, / isn't announced at all, i.e. W5QD/QRP would be (if I
used SSB) Whisky Five Quebec Delta QRP. Pilots say slant on the radio
when a / needs to be made clear.
If all else fails and you really really need to communicate /, there's
always dad di di dah dit.. Sorry couldn't
I'll second both the congrats on the finished build and Don's helpfulness.
He's a bottomless pit of info and help on the K2 and can answer probably
anything you can come up with.
You'll love your K2, I finished mine about a month ago and I'm so impressed
with it I bought a K3 for my base
Karl,
They were given away free, but only for one day :-) - if you missed
yours yesterday, I am sorry.
I didn't get mine either!
73,
Don W3FPR
KARL MARDERIAN wrote:
Hi,
I looked on the Elecraft web sight. I cannot find a KSUNOT3 nor a KSPOT3.
Please just for my info., what are these
Clause 2.3 of the CEPT Licence says
2.3 When transmitting in a visited country the licence holder must use
his national call sign preceded by the call sign prefix of the visited
country as indicated in Appendices II and IV. The call sign prefix and
the national call sign must be separated
Oh Boy! do we have to differentiate between the Linux slash and the MS
slash?
Seriously, I thing just slash should do it, the listener can write it
whichever way he (she) wants.
73,
Don W3FPR
Julian, G4ILO wrote:
I suppose you could always take the lead from how web addresses are read out
April Fools.
On Apr 2, 2010, at 1:34 PM, Don Wilhelm wrote:
Karl,
They were given away free, but only for one day :-) - if you missed yours
yesterday, I am sorry.
I didn't get mine either!
73,
Don W3FPR
KARL MARDERIAN wrote:
Hi,
I looked on the Elecraft web sight. I cannot find a
David wrote...
I don't see any mention of the word slash. That is an Americanism
like center ;-)
This is just a guess. Early in the 60's, IBM used the slash as part of their
control
language to their OS on the 650, the 360 series, etc. Who amongst us doesn't
remember having to put a
And of course, slash involves two, usually fictional, characters of
the same sex, and stroke is for the single male.
73, doug
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And don't forget the computer nerd web site /. It is pronounced slashdot
http://slashdot.org News for Nerds. Stuff that Matters.
Oliver
W6ODJ
On 2 Apr 2010, at 2:30 PM, gdaug...@stanford.edu wrote:
David wrote...
I don't see any mention of the word slash. That is an Americanism
like
As an engineer, I tried to use what I was
taught--lower-case multipliers are 1 and upper-case multipliers are 1.
K and k appear to have gone the same route as M and m. I don't
know why or when these changed--probably when I was not looking.
Trivia time. Per the International System of Units
No need to speculate on the 6M K3 NF, we can calculate it. Computing the K3
noise figure from the minimum discernable signal (MDS) gives
preamp off 18 dB (K3/100 test) to 20 dB (K3/10 test)
preamp on12 dB (Same in both tests)
compare these to other 6M rigs out there:
IC-551D
I think an easier way to remember is that starting from the very small of the
prefixes up through kilo, they are all lower case. Then, beginning with Mega
and all those that are larger are upper case. Thus, Mega begins the upper case
range, everything else below is lower case. But, I totally
I have a similar issue with my K3 VL-1000 combination the amp would key
up full power then fold back slowly until it was running about 1/2 output.
No amount of reducing the mic or power settings changed this behavior
and still have the right output. Even setting drive for lower amp output
it
The K3's typical MDS on 6M, with the internal pre-amp ON, out of the
factory is closer to -133 to -135 dBM. (I just confirmed this with our
production test techs.)
If you are seeing something in the mid -120s on any band with internal
pre-amp ON, there is something wrong.
73, Eric WA6HHQ
Phil,
It is all about being un-ambiguous IMHO. M = Mega, m = milli. Others
which require careful use so as not to confuse are da = deca. d =
deci, P = peta while p = pico. Z = zeta, z = zepto; Y = yolta and y =
yocto. See the SI standard - yes the chart I am looking at uses
uppercase for
Thanks everybody,
Your replies haven been very helpful. After reading through them all I
discovered it's best to stick with stroke in stead off portable.
I was lead to belive that portable was the better word because of what a
Dutch ham living in the USA said to me the other day. He claimed the
how do you calculate... I want to work more 6m signals and need to know the
testing method. If signals are that better then I need to add the external
unit.
Bill
K9YEQ
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of James
Just finished the basic setup and calibrations, no tweaks.
Bare bones QRP K3 #4123 is now alive and well,
made it's 12w SSB debut on 80m this afternoon,
with compliments all around,
from the guys that normally hear me running 400w.
Haven't even tried setting the tx audio up yet,
just plugged in
The Elecraft external preamp with 0.7 dB noise figure and 18
dB gain helps a lot:
K3 with PR6 external preamp
preamp on 0.9 dB
And the preamp is pretty robust to strong signals.
Is this calculated with both preamplifiers on (cascaded) or
with the PR-6 only?
73,
Eric - I used the numbers from the January 2009 QST tests, where the ARRL
measured -136 dBm MDS with the internal preamp on, and either -130 dBm in a 400
Hz bandwidth or -128 dBm in a 500 Hz bandwidth with the preamp off.
using
MDS = -174 dBm + Noise Figure + 10*log(Bandwidth)
Noise Figure =
Can anyone tell me if I have the correct Jumper Block configuration on
the K2 for my Heil Traveler Headset? (Not the ProHeadset but the
Traveler) I'm using a Kenwood 8-pin adapter cable HSTA-K8 for the
headset. So far everything seems to be working FB except for the audio?
I followed the
Hello Elecraft,
Locate a 2-D fastener. What is that, where would I find it?
--
Best regards,
Foxjazz mailto:fo...@foxjazz.net
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Joe - I went back and did the calculation again for both conditions. I had made
a small mistake in calculating the combination previously.
K3 external preamp on, internal off, Noise Figure for combination = 3.3 dB
Which should be good for most work.
K3 external preamp on, internal on, Noise
Joe
Tuner works just fine everything is just like a 100 / 200 watt Yaesu is
driving the VL-1000 my Quadra
is over ten years old and was built when Yaesu had the company it is the
second version
I want to say of the original released.
I use the K3 [TUNE] button for tuning the tuner and band
Moments ago some guy posted ...
Hello Elecraft,
Locate a 2-D fastener. What is that, where would I find it?
--
Dear Sir,
Supposedly you inventoried all of the parts before you started. If not,
you will find a photo of a 2D fastener in the parts list towards the back of
the K2 manual.
True enough--and thank you and W7AY for pointing that out--but there is
no justification I can see for mhz, which breaks not only the standard
you reference, but also the convention for capitalizing proper names,
such as Hertz--and Ampere, Ohm, Tesla, Oersted, Siemens, Henry, Farad, etc.
There
In the interest of limiting the overall list noise level, lets table the
mhz discussion for now.
73, Eric WA6HHQ
Elecraft List Moderator
On 4/2/2010 5:09 PM, Garry Shapiro wrote:
True enough--and thank you and W7AY for pointing that out--but there is
no justification I can see for mhz,
Hi,
I'm trying to finish up my K2 and am preparing to install the
K2KSB2XTLS mod. I understand where these crystals go on the KSB2
board, but am trying to figure out which crystals I remove from the RF
board. Looks like probably X7-X11, but that leaves me with 2 extra
crystals for the RF board.
You will find them in the hardware bag. Please stop and inventory your
K2 parts, that is where you become familiar with the parts to be used.
The parts list has photos of most all the parts.
Do you have trouble reading the manual? If so, we can help. But if you
can read the manual, please
John,
Put them at X5 and X6 which are the 2nd Xtal Filter crystals.
BTW - if you have the original 2.1 kHz KSB2 filter width and want to
change it (using the KSB2CAPKT or your own capacitors), the time to do
that is after you remove the crystals from the KSB2 board and before you
put the new
More specifics:
Set vfo A to, eg, 14.000.00
Set vfo B to, eg, 14.050.00
Press AGC to set agc to S
Press VM
Dial desired memory number
Press VM to store
Press VM to load scan info
Press VM to confirm
Hold FREQ ENT to start scan
Press MV to stop scan
Press MV to re-load scan
Press MV to confirm
All:
The issue has been resolved. It was an Operator Induced Open Head Space
Issue related to the operation of the wattmeter, which seems to work
better than its operator!
73 Brian KD0HII
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It's WORKING! Woohoo!
And the winning formula is:
All the jumpers are plugged in on the K2 jumper block EXCEPT #5 and
the 10K bias resistor is wired between pins 1 6 on the back of the
mic jack. Bingo! We have audio from the Heil Traveler to the K2!
Thanks to all for the last minute
Hi,
for sale K3/100, 2 month old, 500Hz 5pole, Mic MC-43, location Germany,
for further info: hel...@teleos-web.de
73 Peter
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Maarten
Stroke can mean many things. Stroke of a hydraulic piston. Stroke of
an engine piston. Stroke as in medical condition. Stroke as in pull on
the oars in a boat. Stroke of a pencil. English is obfuscatory.
Stroke has been used on the bands for as long as I've been a ham which
is many
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