You should be sure to NEVER say that around a microwave person! As long as
you stay in HF, crimps may be OK. As a retired microwave circuit and systems
design engineer, there will never be a crimped anything in my ham station.
Saying 'crimped' is better than soldered is the same as saying you
Bird accuracy is specified to be +/- 5% of meter full scale ... a 100W
element would be a poor choice to measure a 100W output level. Take a look
at any Bird's meter scale. It's not linear and can be read with the most
accuracy to the left of center scale. A 250W element is much better for
Properly crimped, gas tight connection is superior to solder from DC to
daylight. Just my opinion of course. Oh, and 40 years of experience.
Ken - ke4rg
When the debate is lost, slander becomes the tool of the loser. Socrates
-Original Message-
From: Elecraft
You can also try turning the P3 OFF, then loading. This will confirm
the wiring/cables/etc.
73,
Lyle KK7P
...The connection with the serial adapter cable to the P3 *should*
have worked. That means you may have to do some additional
investigation.
A comment here, has anyone thought to use a Bird 43P with a 100 watt HF
slug? Or maybe a TelePost LP-100a? Both are equally good regarding
power measurements but only when the load is 50 ohms resistive.
73
Bob, K4TAX
K3S s/n 10,163
On 8/21/2015 8:15 PM, Don Wilhelm wrote:
In a slightly
I have an LP100A as well as TX Mon for the P3. But, I also do admit that my
reason for having the LP100A is not to have an accurate reading of power but
rather to have a reasonable good indicator of power and SWR. I got the LP100A
long before I had my K3 or P3 so if I were doing it all over
Tom is correct !
OT Trivia: PL-259's and SO-239's were not designed to be 50 ohms and
seldom are. Use them in impedence-critical situations ... phasing lines,
power dividers, wattmeters, etc. ... at one's own peril. (;-)
73
Ken - K0PP
On Aug 21, 2015 9:01 PM, Chester Alderman
Yep...and the WK ARC of Greater Milwaukee, N9AW (2A), is also an all
Elecraft FD group using three K3's plus the back up radios are also
K3s. Seven or eight antennas on 80-6M all within probably a 200 ft
radius. Never a hint of the other radios transmitting.
On 8/21/2015 1:05 PM, Jim Brown
Bob,
I use my Bird 43 terminated with a dummy load when the power level I
want to measure will give a good meter deflection with the slugs I have
available.
Like Don, I find the voltage method handy when working with QRP rigs,
since they barely deflect the Bird with any slug I have. I use
Another data point from the all-K3 FD station W1LY (2A RI). The 3 Yagi
antennas in the photo (link below) were all on the 20m band simultaneously
for at least 4 hours at the beginning of FD. 1 station was on 20 CW, and 2
stations were on 20 SSB. All running 100 Watts. Another K3 was used in the
While the Bird wattmeters are highly respected, consider the following
with respect to any analog wattmeter:
The Bird can be as accurate as 5% of full scale - that means that with a
100 watt slug, a 5 watt potential error at any point on the scale.
Attempting to measure a 20 watt actual
So by your logic it would be best to measure one Watt using a 100W element.
On 8/21/2015 8:03 PM, Ken G Kopp wrote:
Bird accuracy is specified to be +/- 5% of meter full scale ... a 100W
element would be a poor choice to measure a 100W output level. Take a look
at any Bird's meter scale. It's
From a more simplified position:
Portable operations with a K3 from early 2008, continuously through to today,
the K3 has been the only transceiver in use.
Multiple wire antennas and a tri-band yagi on a trailer mounted tower is in my
estimation are hard life and I would question what other
I recently posted a poorly crafted question on the subject. Since then
I have come to realize that there is no definitive answer. Too many
possible configurations.
However, I have learned a lot.
Apparently the biggest improvement comes from the new synthesizer and
the K3 can also be
Now I understand the 'Free doesn't hurt either post'
Maybe I need to look into that. How many free radios does a DXpedition get?
Eric Swartz - WA6HHQ, Elecraft wrote:
The DXpedition members usually purchase the rigs after the DXpedition.
73,
Eric
elecraft.com
_..._
On Aug 20, 2015, at
You should either get the usb to serial cable that you have working, get
another one, or use a real serial port if the computer has one. The computer
needs to be connected directly to the P3 with no intervening devices when you
load firmware.
Vic 4X6GP/K2VCO
On Aug 21, 2015, at 3:12 PM,
The DXpedition members usually purchase the rigs after the DXpedition.
73,
Eric
elecraft.com
_..._
On Aug 20, 2015, at 4:58 PM, Richard W. Solomon w1...@earthlink.net wrote:
Free doesn't hurt either !!
73, Dick, W1KSZ
-Original Message-
From: Elecraft
The illuminating facts are that the K3/S is selected because multiple radios
operating in a close area don't interfere where other brands apparently do.
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The illuminating facts are that the K3/S is selected because multiple radios
operating in a close area don't interfere where other brands apparently do.
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There is a recovery procedure in K3 Utility Help. See Troubleshooting, MCU
Load.
73 de Dick, K6KR
On Aug 21, 2015, at 00:37, pastor...@verizon.net wrote:
I am sending this message again, as it seems my first message never made it
to the board. I was trying to load the new Firmware
On Aug 21, 2015, at 3:12 PM, pastor...@verizon.net wrote:
Vic, The Digi-Keyer II is connected to the computer via USB. And
then there is a cable connected between the Digi-Keyer II and the
P3. Then from the P3 to the K3.
You *CAN NOT* do a firmware upload via any microHAM keyer
Folks - We're exceeding the list posting limit for OT posts. Lets close the
thread now in the interest of relieving list email overload for others.
Eric
List Moderator
elecraft.com
_..._
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Home:
PVRC contest club members have known this very useful fact for quite a
few years now. Our 3A North Carolina field day group (N4C this year)
goes to 100% K3 on HF bands for field day so that we can have both CW
and SSB going on the same band. We never hear the other TX on the
band. Not even a
I just quickly tested my K3 s/n 8895 at 100w output into a 52 ohm dummy
load. Key up = 13.5 vDC; Key down = 21.6 vDC. My power cable between my K3
and the Astron 75 amp power supply is homemade #8 twin wire about 8' long.
73,
Tom - W4BQf
-Original Message-
From: Elecraft
ERROR!!
I think it would be closer to correct if my Key down statement would have
read Key down = 12.6 vDC!! Sorry for the error!
73,
Tom - W4BQF
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
Chester Alderman
Sent: Friday, August 21, 2015
Jerry 0.707 works if you have a pure sinewave i.e. CW. However modulated
signals, i.e. SSB, are not sinewaves. I think he is looking for a true RMS
reading.
73
Fred, AE6QL
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Jerry
Moore
Sent: Friday,
Good morning to the group, my P3TXMON just arrived the other day and today it
was installed and it works and looks great! I do have a questionthe power
reading is Peak-Peak is there a way to switch to RMS? If not is it possible to
make a request to have this looked at by the Elecraft folks
Same PS here, but a RigRunner 4005 in between PS and K3.
RX 13.5V @ 1.26A
TX (100W CW) 12.0V @ 17A
This yields a resistance of 95mOhms which I consider ok.
73, Markus HB9BRJ
--
View this message in context:
It also depends on the wire size and length of run.
If you get a supply with Sense Terminals you can eliminate that problem.
73, Dick, W1KSZ
On 8/21/2015 8:12 AM, Jerry Moore wrote:
If you google around you'll find the Astron VS-35M is known to have issues
with voltage sag under load.
I can't say enough good things about the built in data modes. I don't
think casual gives them enough credit for their usefulness while
chasing DX. I had 114 DXCC entities confirmed in digital mode (all
RTTY) when I acquired my first K3 in the fall of 2011. I'm now listed
at 215 on the
The KPA500, ZN5 Key, and the P3 have all been sold pending funds.
On Aug 20, 2015, at 8:33 AM, Arlen Fletcher arlenfletc...@mac.com wrote:
I’m selling my K3/100 (S/N 81xx), P3 (S/N 31xx) and KPA500 (S/N 6xx) as well
as some other misc equipment. Continental U.S. buyers only please! All
Charles, at 100w into a dummy loadI see a .8 volt drop from 13.8 vdc on
a switching supply, and 17.5 amps. I think it may be time for me to
clean some contacts, too. The fuse holders are always good suspects.
73, W4FMD
On 8/21/2015 11:06 AM, Charles Yahrling wrote:
What would be a normal
Mke
I am not absolutely sure about this, but on page 29 of the Rev. E, July
14,2015 'High Performance Panadapter' manual, in the second column it states
The power output bar graph shows both the current power with the moving bar
and the peak power achieved with a narrow bar. The insinuation
If you google around you'll find the Astron VS-35M is known to have issues
with voltage sag under load.
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
Charles Yahrling
Sent: Friday, August 21, 2015 11:06 AM
To: elecraft@mailman.qth.net
Subject:
On 8/21/2015 11:06 AM, Charles Yahrling wrote:
What would be a normal value on the FP voltage display when tx at
100W, using factory fused cables? No sub installed.
I don't know about factory fused cables since my factory cable does
not have fuses. However, using the stock cable and an
Better still...it doesn't use the abysmal Yahoo Groups.
On 8/20/2015 4:23 PM, Dauer, Edward wrote:
While I can¹t contribute anything new to the question of new K3S vs used
K3, the dilemma which started this thread, I would note one important
advantage to being in the Elecraft club in addition
What would be a normal value on the FP voltage display when tx at 100W,
using factory fused cables? No sub installed.
PS is Astron VS-35M linear, voltage set at 13.9 idling per FP display.
drops to 11.1 on TX. Current varies but up to 15.5A indicated. Specs call
for 17-22A tx @100W.
I suspect
Mike, to get RMS just multiple by .707
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Mike
Weir
Sent: Friday, August 21, 2015 11:07 AM
To: elecraft@mailman.qth.net
Subject: [Elecraft] P3TXMON question?
Good morning to the group, my P3TXMON just
The narrow bar is PEP (peak envelope power) with a long time constant.
The solid bar is effectively also PEP, but with a shorter time constant
so you can see what the modulation/keying is doing.
By the way, in the radio industry, the term peak is used in more than
one sense, which can be
On Fri,8/21/2015 11:52 AM, Richard S. Leary wrote:
RX 13.9V @ 1.15A
TX (100W CW)12.6V @ 19.62A
Readings from K3 VFO B display of V and A
The difference includes the IR drop in the red/black power cable between
the power supply and the K3. Some quick arithmetic. #10 AWG is 1
milliOhm
Bill's information is entirely correct. Thank you for that clear
explanation.
Now back to what I think was the intent of the original question - even
if the terms were incorrect.
Hams commonly use two different considerations for power - PEP - Peak
Envelope Power - that is the peak power
You might try again. Seems to be working fine …
Grant NQ5T
On Aug 21, 2015, at 3:21 PM, mike ai...@comcast.net wrote:
'Problem loading page' browser message. I cant get to it. 73 ..mike AI6II
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Elecraft mailing list
Bill,
That's absolutely right. There's so much confusion about such things and
you have explained it very well. RMS can only ever be used as a value of
current or voltage, never power.
73 Stephen, G4SJP
On 21 August 2015 at 20:34, Bill Breeden breede...@cableone.net wrote:
It's important
The KPA500, ZN5 Key, P3, AL80B, and LP-100A have all been sold - pending
payment.
On Aug 20, 2015, at 8:33 AM, Arlen Fletcher arlenfletc...@mac.com wrote:
I’m selling my K3/100 (S/N 81xx), P3 (S/N 31xx) and KPA500 (S/N 6xx) as
well as some other misc equipment. Continental U.S. buyers
It's important to remember that RF power expressed in watts is always
based on RMS values. If RF watts are calculated by measuring the
voltage across a known load, the voltage must be expressed as an RMS
value to correctly calculate the power in watts. Watts are watts.
There is no such
'Problem loading page' browser message. I cant get to it. 73 ..mike AI6II
--
View this message in context:
http://elecraft.365791.n2.nabble.com/P3-1-34-SVGA-1-21-BETA-Firmware-available-tp7597133p7606526.html
Sent from the Elecraft mailing list archive at Nabble.com.
On Fri,8/21/2015 7:53 AM, Guy Olinger K2AV wrote:
VRC contest club members have known this very useful fact for quite a
few years now. Our 3A North Carolina field day group (N4C this year)
goes to 100% K3 on HF bands for field day so that we can have both CW
and SSB going on the same band.
PS here is Astron RS-35M, connected directly to K3/100 #4497. Xmit into 50W
dummy load
RX 13.9V @ 1.15A
TX (100W CW)12.6V @ 19.62A
Readings from K3 VFO B display of V and A
73, Rick W7LKG
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
Guy is correct, I have a ham living about 700 feet from me, and when he
opens up with his KW, my old Icom used to die... The K3 does not even
let me know he is on if he is beyond 10 to 20 KHz. Only way I can tell
is a HUGE spike in the P3 at his operating frequency.
I did a very informal set of
Thanks a lot for your reply Joe, my Station Masters are pretty new
(2014/2015) so I shall be safe to connect Inhibit directly.
Just like Yaesu, SM Inhibit provides +12V to inhibit and pulls the Inhibit
line low to enable transmit (/Inhibit).
Then why do I measure 12V in rest state, when no
And you should make sure you get the correct beta firmware because it is
'P3/SVGA Beta 1.54/1.25 now available' and not what is in the heading of your
email.
Tom - W4BQF
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of GRANT
YOUNGMAN
Sent:
Doesn't appear that this was posted on the Elecraft reflector..
73
Ken - K0PP
On Aug 21, 2015 4:14 PM, poltergiest...@yahoo.com [KX3]
k...@yahoogroups.com wrote:
I thought I would put this out in case someone finds a used one for sale.
It was stolen in Miami Florida.
Thanks
When might the K3S schematics be available or are the K3 schematics the
same?
Thanks in advance.
Jer
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Help: http://mailman.qth.net/mmfaq.htm
Post:
In doing a forcing a firmware download, you might want to *remove* the
P3 from the circuit. You need to get the circuit as basic as possible.
Connect the PC directly to the K3. Once everything is straightened
out, go back to .
Some folks who have recently converted to Windows 10 have troubles
Then why do I measure 12V in rest state, when no switching occurs?
Isn't it the other way around ? (I can't test it right now)
No, High is the at rest state - Inhibit line is pulled low *after*
PTT - the time delay is set in the PTT Sequencer settings.
PA PTT is currently given by an MK2R+
Good Evening,
This is Mark Griffin, KB3Z. I am having a problem with updating the K3
Firmware. I have a black screen with MCU LD on it. The TX light is flashing
red. My usb to serial port cable is a prolific cable. My computer does not have
any issues with this cable. But for some reason the K3
(I don't think I sent this from the right account the 1st time - forgive the
duplicate if it happens.)
If Elecraft is consistent from K3 to K3S, you might check the book for
Parameter Initialization (reset to default).
Page 72 in K3S manual.
Your mileage may vary...
73
Mark, ab7mp
Well, it seems that the prolific cables do work with windows 10 and the K3.
Evidently you can't connect the cable to the P3 and then to the K3. It must be
connected directly to the K3. Once I did that the firmware loaded and
everything is back to normal. Hopefully Howard at Elecraft will read
Hi All
From my time working in a Ham repair shop I can say that if a power supply
dipped by more than 0.25 Volts between RX and 100w TX AT THE TERMINALS ON THE
CASE OF THE POWER SUPPLY then that power supply wanted either replacement or
repair.
I have just checked my own power supply for my
In a slightly related note - for those who are using an oscilloscope to
measure the RF voltage at the output, instead of converting everything
to RMS and doing the power calculation, I can give you a shortcut. The
formula for power by observing the RF voltage across a 50 ohm dummy load
is
Properly it must be crimped A N D soldered. Both are required.
Are you saying a crimped and soldered connection is worse than a crimped
only connection?
My military experience says there first must be a mechanical connection
made {crimp or wrap} and then follow with an electrical
Try connecting directly to the K3 and not to the P3.
Fred KE7X
-Original Message-
From: Elecraft [mailto:elecraft-boun...@mailman.qth.net] On Behalf Of
pastor...@verizon.net
Sent: Friday, August 21, 2015 5:01 PM
To: elecraft@mailman.qth.net
Subject: [Elecraft] K3 Woes Continue!!!
Good
Malcolm brings up a very good point. All connections should be fitted
with a proper lug which is crimped with a proper tool, depending on wire
size and the terminal to which it will be attached, AND all terminals
should be soldered.I make no exceptions to this practice.The
crimp
Mark,
I am glad to hear that you now have resolved the problem. Sorry to hear
of your frustration, but those computer COM port issues can indeed be
frustrating at times.
The connection with the serial adapter cable to the P3 *should* have
worked. That means you may have to do some
I respectfully disagree. A properly made crimp is superior to a soldered
connection. The key word being properly made. If you don't have the correct
tools to do a proper crimp then a good compromise is to solder the connection
after crimping, however, that's only to comply with connection best
If it is in transmit and you are running 12W, back off to 10W or 8W.
wunder
K6WRU
CM87wj
http://observer.wunderwood.org/ (my blog)
On Aug 20, 2015, at 10:49 PM, Wayne Burdick n...@elecraft.com wrote:
Hi Thaire,
Is the message occurring in receive mode?
If so, try plugging in headphones.
There's a procedure described in the K3 Utility Help menu under
'troubleshooting' called Forcing the K3 into Firmware Load Required
Mode. Follow this procedure.
73,
Vic, 4X6GP/K2VCO
Rehovot, Israel
http://www.qsl.net/k2vco/
On 21 Aug 2015 10:37, pastor...@verizon.net wrote:
I am sending
I am sending this message again, as it seems my first message never made it to
the board. I was trying to load the new Firmware into my K3. Well for some
reason we had a power blip during a storm and now my K3 is stuck in MCU LD.
Right now the screen in dark when power is applied and MCU LD is
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