I am getting ready to add the second RX to my K3. I notice that the order
page says that only one AM and FM filter is required in my radio for the TX
side. So my question is when using the divirsity mode to listen to say a
shortwave station I don't need an AM filter on the subRX? My second
Mine was the same way. No worries, it will be fine.
73,
David AJ4TF
--
Message: 13
Date: Thu, 24 Feb 2011 14:18:11 -0600
From: John Cooper w...@gt.rr.com
Subject: [Elecraft] KPA100 SO-239 Help
To: elecraft elecraft@mailman.qth.net
Message-ID:
I'm interested in the LP-PAN if you haven't sold it yet.
73 John K3TN
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Has anyone tried putting a BL2 balun inside a K2?
I have a K2 (#4913) with KAT2, KBT2, K60XV, KDSP2, K160RX, and KSB2.
Have removed the previous KIO2.
Looks like it could fit if the KBT2 is removed.
Chris
WB4WZR
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Scott,
Yes, you would want the same filters in the second RX as are in the main RX,
particularly if you're going to use diversity mode. You will need the general
coverage module as well for use outside the ham bands.
73, Chuck - AA3CS
K3s 4072 4407
Sent from my iPhone
On Feb 25, 2011, at
...While the K3 has static protective devices that have been mentioned by
others, I prefer to err on the side of caution. ...The UHF connector has
one problem for antenna/feedline static charge - if the antenna has built up
a static charge, when the feedline is connected to an SO-239 jack, the
I have a K2 with the SSB option installed and I am having issues getting the
MH2 microphone to work. I am currently using a Heil Pro-Set with the K2 and
everything is working fine. I have checked the back of the microphone
connector and everything appears to be connected properly. The 5.6k
Do you also have a jumper on pin 6 of the microphone configuration
header? You can check quickly by measuring for voltage at pin 6 of the
microphone jack - it should be about 5 volts. You can check for proper
soldering of the bias resistor by measuring for a similar voltage at mic
jack pin
Well, it seems to me that while you only need one FM or AM to
transmit, if you want to hear AM and FM in diversity mode, you will
have to have matching filters for both receivers. And if stations
outside the ham bands are desired, you will need the wide-band module
as well on the
I have an Alpha Delta grounding switch with the arc plug as the first piece
of equipment in the shack after the cable (just one HF/6M antenna line). It
is in line after ICE arrestors which have static drains, one at the base of
the tower and another on my grounding panel at the entrance to the
All of the jumpers are installed. I measured the voltage on pins 1 and 6 and
the voltage is approximately 3.1 vdc. I can still use the K2 with the
Pro-Set and it works fine. The MH2 does not work even though the KSB2 manual
says the configuration is the same.
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The 5v regulator U5 on the control board has an output of 3.0v. I
disconnected the front panel from the control panel and the output is still
around 3.0v. Do you think the lower voltage could affect the operation of
the microphone?
I also noticed there is an update to grounding the microphone
Hi David,
What you and others told me is fine. However, I use the RIT control for large
freq excursions and very seldom use [FINE]/COARSE hold method.
The [RATE] /LOCK push button is a cycling switch. Tap once for slow rate and
tap again for high rate etc etc. So, what I wood like, if
The low voltage is probably your problem. I would think 3 volts is
too low for the microphone element.
I know 3 volts is too low for proper operation of the microprocessor,
and since you have not said anything about other strange symptoms, I
would first check your voltmeter. Do you read 5
Hi Tomy
Email sent
Cheers
Ray G3XLG
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Scott,
Yes and Yes. If you are going to use the sub RX for AM receive then you
should have the 6Khz AM filter. If outside the ham bands you should also
have the KBPF3 for the sub rx.
73
Greg
AB7R
On Fri, Feb 25, 2011 at 2:38 AM, N1IRB n1...@cox.net wrote:
I am getting ready to add the
On Fri, Feb 25, 2011 at 12:41 AM, Bob - W6OPO bob.w6...@gmail.com wrote:
...the IC-7800...I felt ...it was indeed the ultmiate transceiver. Then I
got to spend several hours on a friend's K3
Very interesting comment. However, it could have been worse. You could have
bought an FT-9000
Years ago I recall someone reporting here they had mounted a balun inside
the top cover, I believe either in the space for the KAT2 or the KBT2, and
using the transverter connector holes for binding posts to their open wire
line.
Be careful about the sort of binding posts you use though. Nylon
Vidi,
The solution is on the VFO A display. If in fine there are three decimal
digits. Tapping while in fine mode gives you two decimal digits, coarse mode
gives one decimal digit and tapping rate gives you two decimal digits. In any
case tapping fine gets you back to three decimal digits.
When working DX stations that are operating split I much prefer to use the
transmit offset (XIT) function rather than using the Split/A/B method. This
puts all of the needed controls together.
Using my current panadapter setup, an SDR-IQ + SpectraVue, if I want to see
where my transmitter is
I replaced the 5v regulator and the 5v line is now reading 5vdc. The MH2
still does not work. I also plugged in the Pro-Set and the pro-set works
fine. Do you think the microphone could be broken? I have never used it
before so I am not sure it works.
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Considering another K3 for mobile and portable use. My shack contains
K3 #24, using a Heil Goldline on the narrow setting. This combination
produces very clear and penetrating TX audio.
K3 mobile use means a handheld mic, which the Goldie is not. I'm
considering the MH2 (and other handheld
Yes, it is possible that your MH2 has a problem.
Did you buy it used? In that case, someone may have re-wired the
microphone plug for some other radio.
73,
Don W3FPR
On 2/25/2011 11:29 AM, KA1YMX wrote:
I replaced the 5v regulator and the 5v line is now reading 5vdc. The MH2
still does not
I bought it directly from Elecraft.
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Hi all. Has anyone any knowledge of a sub-miniature transformer to change the
impedance of a 100k dynamic mic to 600 ohms?
I have a surfeit of old Shure mics and just about all are very high impedance.
Ideally, I'd like a transformer that could be tucked away in a spare corner of
a hand-held
I would say a faulty mic. is a very good possibility. I am on #3. The original
mic worked properly for about 3 months. The replacement did not function at
all but #3 seems to play just fine. I feel as though there must have been a
bad batch Other than that issue the K3 and Elecraft's first
Hi John,
If it were me, and there is a possibility that the inner wire soldered
to the inner pin could freely spin around during the process of taking
on/off coax at the back of the unit, I would not take the risk of
compromising the inner wire such that it could twist, bird-cage or
possibly short
Heil sells such a transformer- I have one here I used on an EV mic.
Dale W4OP
- Original Message -
From: David Lankshear d...@lanks.plus.com
To: elecraft@mailman.qth.net
Sent: Friday, February 25, 2011 12:43 PM
Subject: [Elecraft] [ELECRAFT] {OT} Transformer to change mic impedance
I've found the same problem with two batches of Teflon insulated, single
hole mount SO-239 connectors manufactured in China and purchased from RF
Connection. The center pin spins within the Teflon bushing and unless
the user is extremely careful when connecting a PL-259, the wire
connected to
Inline posting for consistency...
--- On Fri, 2/25/11, Joe Subich, W4TV li...@subich.com wrote:
From: Joe Subich, W4TV li...@subich.com
Subject: Re: [Elecraft] P3 Question
To: Wes Stewart n...@yahoo.com
Cc: Elecraft Reflector elecraft@mailman.qth.net
Date: Friday, February 25, 2011, 9:39 AM
An SO/PL239 is pushed on, not twisted, until the face of the male is against
the ridged edge of the female, then the outer shell is threaded on and
tightened. The center pin never turns nor has any torque applied.
I cannot picture how you could spin the CENTER conductor. That would
require
He is talking about prior to soldering. I have seen these too. So has
HRO who had to send a bunch back for just this reason.
On 2/25/2011 11:38 AM, Ron D'Eau Claire wrote:
An SO/PL239 is pushed on, not twisted, until the face of the male is against
the ridged edge of the female, then the
One solution, especially for folks who are in the beginning stages of K3
construction, involves substitution of the SO-239 for a better quality
connector. I used a pair of Amphenol types with a Teflon insulator, but
Phenolic is fine. These were purchased from Mouser, catalog P/N is
I cannot picture how you could spin the CENTER conductor. That would
require twisting the coax attached to the male half.
Sure, it shouldn't happen if the op uses diligence in keeping all connectors
tight. But if the PL-259 becomes loose and ever-so-slightly unmates from
the SO-239, the
One solution, especially for folks who are in the beginning stages of K3
construction, involves
Sorry, meant KPA100 or K3 construction...
Paul, W9AC
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The effect of the IF noise blanker is clearly visible on the P3. However, the
K3 schematic shows the IF output (which feeds the P3) picked off AHEAD of the
noise blanker. Anyone know what's going on here?
For what it's worth, I also note that IF NB settings, other than OFF, have no
effect on
It's easy enough to inadvertently to rotate the center pin when mating
with the PL-259 particularly with small diameter coax cable and where
the connector is not the easiest to access. Push the center pin in, and
then find the coax isn't routed exactly like it should be, move the
cable around
Just back from Honduras where I enjoyed the kind hospitality of HR2J and his
lovely wife. His K3 worked flawlessly.
Unfortunately I had lots of travel and health problems, and my K3 may have
been damaged in transit.
My K3 only transmits up to 12 watts and has an error message ( 12V
Just back from dxpedition as HQ5A in Honduras. My K3 may have had some
rough handling both in the airports and in bumpy roads and falling off
pickup trucks.
When I put my K3 back in that shack it only shows a maximum of 12 watts
output.It also has an error message 12 volt error even though my
Perhaps a Little super glue would keep it from spinning. Geo/W2BPI
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They obviously didn't include it, though, and in spite of several
public and private queries from me regarding the reason for that
omission I never got a single answer.
Examination of the P3 data would suggest that I/Q do not exist
except in the digital domain. I highly doubt that the
The foregoing probably answers my own question which is this: will
the P3 markers/cursors that show the A and B VFO frequencies account
for the case of both RIT and XIT being engaged at the same time?
Since the P3 does not operate in transmit, XIT is a moot point but
both the cursor and
To me it seems more logical to report to the outside world the
displayed frequency, not some internal portion of that frequency.
The K3 (along with Kenwood and recent Yaesu rigs) report the current
VFO frequency and RIT in the IF command. It also reports each VFO
(FA, FB), RIT (RO) and XIT
Thanks, Don.
I did not know this.
...bill nr4c
-Original Message-
From: Don Wilhelm [mailto:w3...@embarqmail.com]
Sent: Thursday, February 24, 2011 6:12 PM
To: n...@widomaker.com
Cc: elecraft@mailman.qth.net
Subject: Re: [Elecraft] P3, what lies ahead?
If you are using a filter
Dale,
I'll try to get you started, but you may have to contact Elecraft support.
It sounds like the power connection to the power amplifier (KPA3) has a
problem. You only get 12 W because that's the point where the KPA3 switches
in. First, make sure the K3 circuit breaker isn't tripped.
I'd not worry about that since the connector center pin isn't subjected to
any twisting motion in use.
Ron AC7AC
-Original Message-
He is talking about prior to soldering. I have seen these too. So has
HRO who had to send a bunch back for just this reason.
On 2/25/2011 11:38 AM,
My previous reply assumed that you did not have a KPA-100 but this message
makes
it appear that you do. I have had some trouble with the plug to the KPA-100.
In my case just unplugging and resetting the plug fixed the problem for a good
while, but I may need to change the plug eventually.
Yes, that's one of the serious weaknesses of the UHF connectors, IMHO.
I've not had any trouble spinning the center pin enough to cause trouble but
if the outer shell is not screwed tight to hold the connector sections
snugly, one has an unstable and intermittent ground connection in the coax.
All good stuff. My K3 exhibits erratic power output at times, (TX Gain
failure) corrected by loosening and retightening the screw that threads into
the 2D block and standoff next to the SO-239. Relying on aluminum-to-aluminum
mechanical connections for r-f returns is bad business.
Next time
dw,
No worries -- There are two wires connected to the inside of the KPA100
SO-239. Yes, one goes straight out the back of the center pin, but the
other is soldered at right angles to it - the wire soldered at right
angles will stabilize any tendency for the center pin to turn after it
is
Joe,
One thing that I'm puzzled about is why it is that most of the posters are
complaining about absolute frequency display and logging, when the requirements
for DXCC awards and contest awards are awarded by band, not frequency. In LOTW
even the time only has to be within 30 minutes to be
Although I resisted using them mightily, it's the 21st Century and this 53
years as a ham occasionally uses Internet spots, mostly to see where the
propagation is. Don't try posting one as +/- 10 KHz.
--- On Fri, 2/25/11, Amateur Radio Operator N5GE n...@n5ge.com wrote:
From: Amateur Radio
My first thought would be that one of the boards worked itself loose. I
would open it up and check to make sure everything is still seated properly.
Buck
k4ia
On 2/25/2011 2:45 PM, Dale Long wrote:
Just back from dxpedition as HQ5A in Honduras. My K3 may have had some
rough handling both
Me too Wes.
That's why I wrote my own control program for the K3 along with a Telnet spider
spotting program, log book and rotor control, which also gets the DX call's data
from QRZ. All of which are as accurate as they can possibly be.
73,
Tom Childers
Radio Amateur N5GE
Licensed since
I just purchased a MH2 to use with K2. I'm getting reports of 5/9 but with
some distortion or rattle audio with mic gain on 1.
If I try other mics, I get clean audio reports but way down in signal
strength. The resistor is installed and jumpers there.
A Kenwood dynamic mike wired for K2 gets
K2 qrp top cover with tuner, battery, and io port. It has been sitting for
several years so condition of battery is questionable/unknown. $50 shipped
to lower 48. Ken k...@pacbell.net
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Roy,
With the Elecraft MH2, set the Mic Gain to 1 and the compression as you
desire, but I like to use 3:1 for normal operation. Watch the bargraph
to see an indication of your peak power output - the peaks should be
somewhere near the power requested level.
I usually find with any
Top cover has been sold. Thanks.
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On 2/25/2011 9:43 AM, David Lankshear wrote:
Has anyone any knowledge of a sub-miniature transformer to change the
impedance of a 100k dynamic mic to 600 ohms?
Try it without the transformer before you decide that you need one. It
is VERY likely that it will work just fine. Use TXEQ to adjust
... my K3... only shows a maximum of 12 watts output.
It also has an error message 12 volt error...
I had the same problem.
Ol' #1823 worked flawlessly at PJ6A with 100 watts out for 25k QSOs.
After bringing her home, I had the above problem in EVERY contest.
Gary at K3 support suspected the
The LP-PAN has been sold.
73,
Mike
KW1ND
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G'day Matt,
I use my K3 with an MH2 microphone most of the time though for contesting I
switch over to a Yamaha CM500 headset.
I have found the MH2 to be an excellent mike but you will need to set the TX
EQ's 3 lowest bands to their lowest level.
Leave all other bands at the 0db point ant you
Beta version 1.05 of P3 firmware is now posted on the Elecraft web site.
This adds some features to enhance the new fixed-tune mode, improvements
in transverter operation, more-accurate VFO cursor displays, and several
bug fixes.
One of the bugs was that upgrading between certain versions of
Hi.
I finally figured out how to set, adjust the level and reset/clear the SWR
alarm on my new W2 wattmeter.
I had been trying to command the W2 to change the alarm setpoint simply by
sending a [ or ] from the command tester in the W2 utility, but inputting [
or ] followed by enter always
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