Good advice from you both on battery fusing, particularly in vehicles, but
you've drifted off the subject a little.
Chris W7CTH said:
Hi, I am ready to apply 12v for the first time to my new K3.
I would use a current-limited power supply to connect up ANY equipment for
the first time. No fuse
Hi!
I just installed a K144XV in my K3 S/N 1115. The device works great at a
very nice sensitivity (compared to all other 2m allmode rigs I've ever
used). There is only one thing that makes me wonder. If you tune at VFO A
e.g. to 145.700 (using a TX shift of -600 Hz of reperater mode) and then
I note my P3's amplitude readings are about 6 dB low-- that's with the IF
output
switched off. I'm not sure how to calibrate it.
Even so, the P3 gives great insight into signals and their amplitude.
Let's say you calibrated your S-meter to read S9 with a 50 uV input
signal. Fifty microvolts
Hi Folks,
I bought one of the special K2 IF pan adapter softrock kits off Tony
Parks, but it came without any construction info. I have built a
normal ham band soft rock, but without specific details don't how to
build the K2 IF one. Can anyone help with some info on this variant
please?
Amplitude calibration is not yet implemented in the firmware.
As for SSB peaks do you have peak hold turned on when you are viewing
this? You need to be looking at the signals with averaging disabled
(and preferably with peak hold on) in order to see the power peaks of
an SSB signal.
~Brett
David Cutter wrote:
I would use a current-limited power supply to connect up ANY equipment
for the first time. No fuse is as fast as electronic limiting.
Even the fastest semiconductor fuses require a huge overload to achieve
a sluggish response. Busman 25A fuse: 340A^2t. I'm not an expert,
On 8/12/2010 11:18 PM, Brian Denley wrote:
While enjoying completing my K2 #6963, I see where the manual several times
refers to 'masking material' covering holes in the various cabinel panels.
There isn't any tape on any of my panels. They didn't come with any. Am I
missing something or are
Feature-There is a way to link the VFOs and of course I am working in
the middle of the night here and can't tell you how to unlink them. I
seem to remember it having to do with the split button. (But don't
quote me on that)
On 8/13/2010 2:25 AM, DH2SE wrote:
Hi!
I just installed a K144XV
Al Lorona wrote:
I note my P3's amplitude readings are about 6 dB low-- that's with the IF
output
switched off. I'm not sure how to calibrate it.
Have you done the IF OUT Gain Mod mentioned at the top of page 5 in the
manual?
Phil wrote:
➢ What is the IF Buffer Mod -- did I miss something? I am Serial number 0030.
Phil, the IF buffer mod increases the gain of the IF output buffer –inside the
K3- by changing a resistor value. What matters is the serial number of the K3,
not the P3. Check the Elecraft website K3
I have done the mods and I'm running 00.30 and I'm still a bit off.
My XG2 puts out ~-74dBm give or take a few tenths last time I measured
it on our 80K spectrum analyzer and my combination reads -81dBm on the
K3 with the ATU in bypass and no pre or att. PRE or ATT are correctly
accounted for and
A small strip of 3/4wide Scotch Magic Tape trimmed slightly shorter than the
height of the
case, applied over the holes, solves the dust possibility until you receive
your hole cover part
and next open the P3 !
Jack Scheinuk, P.E.
Scheinuk Agency, Inc.
3445 N. Causeway # 615, Metairie LA
Gee I was hoping to fill the holes with the up coming improvments!
:-)
John
K2QY
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Post:
Lest the list owners are thinking this topic is being discussed to
death: I am actually thankful this discussion has been going on as it
finally clicked with me how to set both my P3 and K3 for a more
accurate readout. Even though I followed the calibation proceedure
after building the K3 I
Guy, K2AV wrote:
Actually...
In a CW contest, where following packet spots can put you on the exact
same frequency with all the other braying lemmings, contributing to
your signal's non-pickoutable status at the other end, being off the
crowd frequency by 20-50 hertz is a SUCCESSFUL
I did not have a current-limited power supply. Just a Astrom rs-35m. anyway I
just went for it and everything worked out okay.
all my ohm reading were all in the safe range and I did take my time to make
sure I did eveything right.
K3 turned on okay.
Chris
~
N2CQ QRP CONTEST CALENDAR
August 14 to September 15, 2010
~
Summer FOX Hunt - QRP 20M CW... QRP Contest!
EDT: Each Tue, 9 PM to 1029 PM
UTC: Each Wed, 0100z to 0229z
Info:
Comparing your S meter lights on the K3 with the P3 is comparing a
length measured with your shoes with a length measured with a
measuring tape, and that should include the fact that your left shoe
is size 6 and your right shoe size 5, as S9 and down are 6 db
increments and all above are 5 db. And
+ and - 100 Hz has worked quite well for breaking some pileups, and
still well within the +/- 250 Hz that puts one into the serious
annoyance category for the fellows up and down frequency.
While it really is nice to know that the P3 *WILL* set you fairly dead
on for digital signals, the degree
Technically, Joe, with PowerSDR/IF in Collapsed view you can fill the screen
with the panadapter/waterfall up to the video card's maximum setting. I run
my monitor at 1680 x 1200 and can fill the screen if I want to. Collapsed
view is not available in the Flex Radio release of PowerSDR.
For
Push and hold SUB until you see Unlink. It will toggle on each hold between
Link and Unlink.
Note: if you have the sub receiver, and even longer hold will put you into
Diversity receive mode.
73,
Eric
www.elecraft.com
_..._
On Aug 13, 2010, at 3:32 AM, Jim Rhodes k...@longlines.com wrote:
On Fri, 13 Aug 2010 11:08:04 +0100, Ian White GM3SEK wrote:
The other important point is that fuses provide ZERO protection until
AFTER they have blown. In the life and death of a semiconductor, even a
few milliseconds is a very long time indeed.
Yes. On the other hand, boards are all
Ian wrote...
The other important point is that fuses provide ZERO protection until
AFTER they have blown. In the life and death of a semiconductor, even a
few milliseconds is a very long time indeed.
I like to tell the story about a series of tests we did when I worked at
Fairchild, in
A transistor is the fastest fuse on 3 legs, beats a 2-legged fuse any day.
David
G3UNA
I like to tell the story about a series of tests we did when I worked at
Fairchild, in
Silicon Valley. Our little VHF silicon transistors were very expensive,
and quite
fragile. We tested many fuses
Interesting reading the last few days.
This morning when we couldn't raise my mother in law on the phone we went to
check on her. She lives about 10 miles away. We had some thunder yesterday PM
but no rain. Been over three weeks of no rain 100+ F temps.
She is OK but the AC pole 150' from
I received my P3 yesterday and the hole cover strip was packaged with the rear
panel cover. BTW, I ordered my P3 on April 17.
Vy 73 de k6osx,
Darin
On Aug 12, 2010, at 6:08 PM, Phil Hystad phys...@mac.com wrote:
Am I the only one who is missing the hole cover strip that was added to the
Hi, Guy,
I *think* we're in agreement... the point I was trying to make was that a
spectrum display tells you s much more than an S-meter. That's my way of
saying how much better it is to have a P3. I tried to express my enthusiasm
with
a little mini-lesson in the way power gets
The transistor is the most probable reason for the fuse blowing but the fuse
may save the other components and semi conductors as well as the circuit board.
The original query stated he would be using an Astron 35 which has a current
limiter but limiting the current to 35 amps will still allow
Lu Romero - W4LT wrote:
However, on a Flex, I can click on a signal and be DEAD ON
the signal I have selected.
You just described the problem most SDRs have (excluding Skimmer). You must
manually point a mouse or turn/press a knob to QSY. The advantage Skimmer
has is that your fingers
If you do not have an **adjustable** current limited supply, do what I do on
the bench.
I have a 35 amp limited supply on the bench, and my 13.8 volt buss has jacks
that are direct, through a 10 ohm 10 watt resistor, and through a second 10
ohm in series with that.
I can get a really good
Received P3 S/N 136 yesterday, ordered middle of day on the 15th, and
kit was complete with nothing left over but empty boxes and packing
material.
The hole cover strip was there, and I was surprised to also see the I.F.
output mod resistor kit included. That modification already had been
One thing that hasn't been mentioned is that the K3 has a built-in 6A
fuse for the basic rig and a separate 20A circuit breaker for the
KPA3. So it's not like there's no protection at all between the APP
connector and the internal circuits.
73
--
Joe KB8AP
On Aug 13, 2010, at 9:02 AM,
Have a Yaesu MH-31 mike with the RJ45 connector on it. Was going to cut it off
and install the 8 pin connector from Radio Shack, P/N 274-025, till I read some
posts on this list about the problems soldering to the mike cable.
So, was wondering if anyone knows of a female RJ45 socket, or Jack,
Dale (from our K3 support group) and I are flying out today for the
Santa Barbara, CA, ARRL Hamfest this weekend. We'll have a full Elecraft
booth there and we will be displaying the K3, P3, our other products,
and the upcoming KPA500 for your perusal. I will also be giving a talk
on advanced
transceiver... ;-)
On 8/13/2010 10:59 AM, Eric Swartz - WA6HHQ, Elecraft wrote:
Dale (from our K3 support group) and I are flying out today for the
Santa Barbara, CA, ARRL Hamfest this weekend. We'll have a full
Elecraft booth there and we will be displaying the K3, P3, our other
products,
I need some advice about my next upgrade. My K3 (4380) does not have the
sub-Rx, which was my next planned addition. However, the P3 has attracted
my attention, and may be a better choice.
The KRX3 seemed like a natural next step. I am a casual DXer and
contester, so it made sense to gain
Wouldn't I/Q outputs from the P3 have given you both right now?
Dave AB7E
On 8/13/2010 9:09 AM, Bill W4ZV wrote:
You just described the problem most SDRs have (excluding Skimmer). You must
manually point a mouse or turn/press a knob to QSY. The advantage Skimmer
has is that your
Bill Myers wrote:
The KRX3 seemed like a natural next step. I am a casual DXer and
contester, so it made sense to gain the features it would add, especially
for SPLIT operation. But the K3 really has a good split system without
the sub-RX - at least for my level of seriousness.
When I
Go for the KRX3 this year and a P3 next
73 de M0XDF, K3 #174 (with KRX3), P3 #108
--
One glance at a book and you hear the voice of another person, perhaps someone
dead for 1,000 years. To read is to voyage through time.
-Carl Sagan, astronomer and writer (1934-1996)
On 13 Aug 2010, at 18:44,
Good question, Bill. I recently added both the sub RX and the P3 to my K3
SN 608, so am in a position to offer at least an opinion on the added
utility of each. It was also my first experience with either capability.
I'm mostly a CW contester but do some DXing and MW/SW listening. In a
The P3 talks to the K3 using a special private command set to prevent
confusion with standard commands sent by application programs. However
the functions are similar, so it should be easier to add the K2 command
set than it would be to add a radio from another manufacturer.
Alan N1AL
On Thu,
I added the second receiver for one reason ... monitoring
six meters for openings. In fact, it has only an antenna
connection on the rear of the K3 with no means to use
the other methods of feeding antennas to it's input.
As another poster has already pointed out, the K3 works
split well, and
How about a K3 + SUBRX plus SDR/ROCKY or SDR/SKIMMER combo. Either SDR
has very easy to setup software.
Much cheaper than P3.
For cracking a big pileup, one needs some way of ID'ing the frequency of
the last N stations the DX worked.
A panadapter might or might not work well-- guys calling
Amen! Best so far.
Let´s move on.
/ James
-
On 2010-08-13 17:01, David Cutter wrote:
A transistor is the fastest fuse on 3 legs, beats a 2-legged fuse any day.
David
G3UNA
I like to tell the story about a series of tests we did when I worked at
Fairchild, in
Silicon Valley.
On Jul 31, 2010, at 7:46 PM, Augie \Gus\ Hansen augie.han...@comcast.net
wrote:
On 7/31/2010 8:24 PM, Phil Shepard wrote:
I will not be able to run the weekly Elecraft SSB net tomorrow
(8/1/10, Sunday). We need someone to step forward and be the NCS this
week...
I'll attempt to
Please ignore this post. It went out by mistake. Apologies to Gus.
Phil
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net]on Behalf Of Phil Shepard
Sent: Friday, August 13, 2010 1:29 PM
To: Augie Gus Hansen
Cc: elecraft@mailman.qth.net
Hi Bill,
I have the Sub RX and have found it to be something that I occasionally use.
If I operate an hour or two a day, I might use it continuously one day and
then not at all for the next three days. But I love it and would not want to
ever be without it.
I haven't yet ordered a P3 but can
Yes, that is exactly what I understand now. The GRANULARITY of the display
is higher or lower depending on the s;oce of bandwidth selected and
displayed on the screen. The narrower the slice, the smaller the
granularity. I thought the P3 was like the old fashioned external VFO units
that took
OK, finished the P3 last night, did the frequency adjustment this afternoon and
now I am learning all about it. Much, much better then my previous panadapter
experience with my Icom 756 Pro III. Yes, not even in the same class as the P3.
But, I had to make room on the shelf for the P3 which
Its the same size as a K3.
~Brett (N7MG)
On Fri, Aug 13, 2010 at 5:54 PM, Phil Hystad phys...@mac.com wrote:
OK, finished the P3 last night, did the frequency adjustment this afternoon
and now I am learning all about it. Much, much better then my previous
panadapter experience with my Icom
The KPA500 is the same size as the K3.
Bruce, N1RX
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Add 1-1/2 depth for a fan
Dick, K6KR
Sent from my iPhone
On Aug 13, 2010, at 6:05 PM, Bruce Beford bruce.bef...@myfairpoint.net
wrote:
The KPA500 is the same size as the K3.
Bruce, N1RX
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Home:
Not much different than a K3, with connectors attached (RS232/coax...)
73,
Bruce N1RX
-Original Message-
From: Dick Dievendorff [mailto:die...@comcast.net]
Sent: Friday, August 13, 2010 9:10 PM
To: Bruce Beford
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3 Serial Number 0030 Is
Gave up trying to get the big computer (Vista) to talk thru COM Ports.
It just won't find one.So went to my old Laptop w/Vista and it
picked up Com3, said it was communicating so I clicked on Send All New
Firmware to K3. It says Sending firmware file hmcu0405.hex to
MCU.. That was
Jay,
Your K3 should be on. Make certain your USB adapter is really
connecting to the K3. Sometimes things like modems masquerade as the
valid connection just because they echo the K3Utilitiy commands. Go to
the Device Manager and see which com port has been assigned to the USB
adapter.
Hello Group,
Having gained some confidence completing a K1 a few months ago, I've just
ordered from Elecraft a K2 with these options: KPA100, KSB2 and KDSP2. I
can't see that I'll ever want to install the KNB2 or the 160 or 60m options.
Does the Rework Eliminator approach to the build
I don't think these are available anymore except for the mic
adapter Bet that helps you make your decision...
;)
On Fri, Aug 13, 2010 at 10:07 PM, VK7JB zen...@netspace.net.au wrote:
Hello Group,
Having gained some confidence completing a K1 a few months ago, I've just
ordered from
Your K3 should be powered in for this. After you click Send, there is a green
progress bar at the bottom that should show steady progress. It takes about 5
minutes or so. The progress bar should be moving visibly
Dick, K6KR
Sent from my iPhone
On Aug 13, 2010, at 9:38 PM, Jay
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