From: Jim Lowman jmlow...@sbcglobal.net
To: elecraft@mailman.qth.net
Subject: Re: [Elecraft] The case for a Panadapter - I'm convinced!
---
Jim,
I would suspect having both the P3 and KXV3 subRx would be the
ultimate combo, as you could tune the subRx to whatever mid-frequency
you
It looks like there may be multiple ways of controlling power on the
KXPA100. Obviously there is the front panel power switch. Another method
is that the KX3 can turn the amp on. Does anyone know how that is
accomplished? It appears there is a PWR ON pin in the 8 pin control
connector, but
After upgrading my Softrock based panadapter to the more sensitive Lp-Pan some
time ago I was seeing microphonic sidebands on cw signals when using the
internal speaker with my early (#145) K3. These increased as AF volume was
turned up and the spacing of the +/- pair corresponded to the
Jeremy,
How much power are you sending through that wattmeter? If it is 20
watts or more, it may just be that 30 mV is OK.
73,
Don W3FPR
On 2/28/2014 9:55 PM, JeremyJones wrote:
I've taken the watt meter out of the loop, and have the K2 set for 10W.
Double checked the windings and solder
Is there an off the shelf cable I can use besides the 850463 Optional KAT500
to KPA500 Cable ? Thanks for any alternatives...
73 Jeff kb2m
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Help:
I'm only running 10W through it.
I've just gone through the complete instruction manual to ensure I haven't
missed anything. Everything checks out. I've just finished the SWR Bridge
Null test and am down to 0.018VDC.
Jeremy
VA3ZTF
Don Wilhelm-4 wrote
Jeremy,
How much power are you
Correction, 0.018 was at 5W. 10W still gives 0.036VDC
Jeremy
JeremyJones wrote
I'm only running 10W through it.
I've just gone through the complete instruction manual to ensure I haven't
missed anything. Everything checks out. I've just finished the SWR
Bridge Null test and am down to
Checked my dummy load with an MFJ-259 and it is 50 ohms resistive, no
capacitive. Rechecked all soldering with a lighted magnifying glass and
cleaned up a couple of joints. Rewound T1 just to be sure it wasn't shorted
in the windings.
Still the same results of 0.035VDC on pin 3 of U5.
Jeremy
Hi,
I just ordered a KPA500. As I normally run barefoot, I was hoping that I could
transmit/receive with the KPA500
totally off (ie, NOT in standby). After reading that it uses PIN diodes in its
TR switch as opposed to a mechanical
relay that would be off when unpowered, I thought I should
Yes, absolutely. When the KPA500 is powered off, the transceiver is
connected straight through to the antenna (or tuner if installed).
/Rick
On Sat, Mar 1, 2014 at 8:03 AM, AD0ES ad...@ad0es.net wrote:
Hi,
I just ordered a KPA500. As I normally run barefoot, I was hoping that I
could
I had to boil down a portion of the instructions for my understanding. I
hope this is correct:
When setting the VFO tracking frequencies, hold K3 tune button FIRST then
tap KAT500 tune IN THAT ORDER. (The frequencies can be set in reverse
order.)
Use KAT500 AUTO button to set INITIAL
I must be doing something stupid, but here goes...
I updated to version 1.63 earlier today from 1.58. I have the latest
firmware versions on both the K3 and the KPA500. To try out the new faster
tuning algorithm I tried to erase the memorised tune settings using the
KAT500 utility (latest
I am using a Navigator interface with an Elecraft K3. The Navigator is
connected to the K3 with a factory made cable. The system works great
on channel one with HRD/MMTTY/MixW software.
I would like to be able to decode RTTY received on VFO B of the K3 when
working DX split. The K3 line out
It may be because the KAT500 is sleeping, and I need to do some KAT500
Utility work to be more aggressive about waking it up.
You may need to turn off Idle Sleep briefly until I can make an updated
KAT500 Utility available.
I use a KAT500 Utility Command Tester page command macro named IDLE
I have a K3, P3 and KPA500. Last night I was encountering some high SWR. The
K3 has the KAT3 internal 100 watt antenna tuner. I do not have the KAT500
tuner. If the SWR was too high, the KPA500 indicated a fault and I went back
to 100 watts with the K3. I tried bypassing the KAT3 to see how the
Dave,
Audio distortion on only 1 or 2 bands is usually a symptom of RF in the
Shack.
That is confirmed by the fact that all is well on a dummy load.
The best place to cure it is on the antenna feedline.
If you do not have a good current balun at the antenna feedpoint, add one.
If you have a
1) It doesn't matter which order you hold the K3 tune button or tap KAT500
tune. I prefer to start KAT500 TUNE first, because it reduces on-air
signal time, and this interrupts the amp key line immediately, before RF.
The KAT500 continues tuning when RF arrives.
2) I don't use Mode AUTO mode.
Hmmm ... I think you may have pointed out a technical difficulty in my
mind. I thought the KAT500 divided the bands up into fixed segments and
I trained mine at what I thought was the center of each segment ...
every 10 KHz on 160, 20 KHz on 80, 50 KHz on 40/30, 100 KHz on
20/17/15/10, and I
Don,
Thanks for the insight and references. This is the first time I have
encountered this type of problem. The temperature here in Minnesota is -3
degrees F. Any outside modifications may have to wait awhile.
73,
Dave W0RU
--
View this message in context:
Dave,
Don't you know antenna work is best done during the winter. :-)
The colder it is, the more efficient that antenna will be!
73,
Don W3FPR
On 3/1/2014 1:41 PM, dave_w0ru wrote:
Don,
Thanks for the insight and references. This is the first time I have
encountered this type of problem. The
If your antenna tuner settings at nearby frequencies are similar, they don't
all need to be present. The ATU searches left and right of the tune freq for
the first non-empty memory. But if there is a stale entry from a prior
antenna, it looks just as good for a Memory recall tune.
The
Yeah. Right 'off the shelf' from Elecraft.(grin)bc
Sent from my Verizon Wireless 4G LTE DROID
Jeff Griffin k...@comcast.net wrote:
Is there an off the shelf cable I can use besides the 850463 Optional KAT500
to KPA500 Cable ? Thanks for any alternatives...
73 Jeff kb2m
As I read Fred's note, it seems like maybe he is assuming that it can keep
multiple settings, as he said he has more than one antenna for most bands.
Does the KAT500 keep a separate set of memories for each ANTx port, or is there
just ONE for each band, irregardless of what ANTx port the
I use an SDR-IQ and run the supplied SpectraVue software on the i-f output of
the K3. I use LP-Bridge to connect the SDR-IQ to the K3 and DXBase
(day-to-day logging) or N1MM (contest logging).
SpectraVue has an external radio mode with the K3 parameters built in and it
marries to the K3
What firmware version are you running? When setting MIC gain, if you can
only go up to a count of 40, you might want to consider updating to version
1.87, the current Production release. A new feature with this release is
additional gain is available for lower output mic elements.
Cheers,
This seems like an increasingly commercial trend cluttering up this list, with
dubious claims to boot.
I guess that I'm not a savvy operator since I use the discredited 400 Hz
filter and manage to get by.
Apparently, 700 Hz is a magical bandwidth, just as 43 feet is a magical length
for a
I would like to get a good wireless weather station that would be compatible
with amateur radio use - no interference to Elecraft K2, K3 or KX3 radios. I
would very much appreciate the thoughts of those on this list who have
experience with wireless WX stations for home use.
My previous WX
I replaced my PR6 with a different unit and it is now surplus to my needs.
Asking $95 shipped within USA, outside USA at actual additional cost.
Jim/N1NK
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Mike and the group,
I would also be interested in suggestions for a WX station. Especially from
the standpoint of playing well with the K3. Hurricane season will start soon
here on the gulf coast and I would like to have a station in place.
Thanks,
Tom KF5WBS
On Mar 1, 2014, at 1:24 PM,
I am trying to use the TUNE button to help provide a constant carrier, as I
always do, with my external Dentron tuner. Everything works great--except
it is exhibiting strange behavior on 15m. When I hit TUNE it won't hold the
TX 15W (what I have set as the output power). In fact, it shows 0W and
Worked RTTY fime Thursday night - started to work a W1AW on RTTY last night and
PTT was working but only carrier no FSK. Using direct FSK not AFSK.
FSK D confirmed on menu. Shorting FSK pin 4 to ground - no freq change -
open circuit voltage on pin 4 about 3.6 volts but source impedance
I've used a Davis Vantage Pro2 wireless weather station for several
years. The only problem it has had with my K3 is that occasionally,
when I'm on certain bands, the weather station will stop displaying the
outside temperature while I transmit, though it resumes withing a few
seconds. I
I have this:
http://www.amazon.com/gp/product/B003OSJ08S/ref=wms_ohs_product?ie=UTF8psc=1
Ambient WS2080. I've not experienced any interference with it either way.
The console on mine died recently but their customer service has been
excellent in getting it replaced. It shows out of stock on
Agree re commercial messages of dubious merit. I
have a 400 and a 1000. Gee, that averages to 700
so I must be really clever :-)
Phil w7ox
On 3/1/14, 11:20 AM, Wes (N7WS) wrote:
This seems like an increasingly commercial trend
cluttering up this list, with dubious claims to
boot.
I guess
I use an AccuRite wireless with no computer interface or radio interference. I
got it at WalMart. Prices vary accordingly to features, this one has a rain
cup for ~US$100 total. Check the hardware department (odd place, but there it
is).
Rick, WA6NHC
iPad = small keypad = typos = sorry ;-)
I am also interested in this topic. I am in the process of getting a Davis
Vantage Pro and wonder where this should be located relative to proximity
to an antenna?
On 3/1/14, 13:07, W8OV w...@verizon.net wrote:
I've used a Davis Vantage Pro2 wireless weather station for several
years. The only
I use the same system but direct connected to the internet. Never once had
an issue with it while running the K3/KPA500...
Dr. William J. Schmidt - K9HZ / J68HZ/ 8P6HK/ ZF2HZ
Owner - Operator
Big Signal Ranch
Staunton, Illinois
email: b...@wjschmidt.com
-Original Message-
From:
So I'm working the contest and my power went out due to high winds
approximately 30 minutes ago. No sweat. I opened up my go kit, pulled the
kx3 and external 6 amp hr battery out, connected the antenna, and I'm back
on the air. Just worked a JA station phone with 5 watts from 6 land. I love
my
Sleep deprived - has been pointed out pin 1 is FSK and 4 is PTT - yep - I
checked the right pins - just transposed numbers when typed , pin 1 just drifts
up . Pretty sure it should be pretty solid 5 open circuit.
Hank K7HP
__
Hello Don. Then I must have the world's most efficient antennas with wind
chills in the minus 50s and minus 60s this time around. Hihihi 72/73
Bruce ve5rc love my K2!
-Original Message-
From: elecraft-boun...@mailman.qth.net
[mailto:elecraft-boun...@mailman.qth.net] On Behalf Of Don
Yes, that input should be a 5 volts, there is a pullup resistor on it.
Since it is in the range of 3 to 4 volts, either the pullup resistor is
damaged (not likely) or the input on the IC inside the K3 is dragging
the voltage down.
73,
Don W3FPR
On 3/1/2014 4:01 PM, Pfizenmayer wrote:
Sleep
Interference works both ways ... I know. :-) I had a Davis station,
don't remember which one, and so long as I was at QRP or near QRP power
levels, all was well. The display was in the shack, the rain gauge was
on the roof, and the anemometer, wind direction, and temperature sensors
were at
On 3/1/2014 11:04 AM, Jim Bennett wrote:
As I read Fred's note, it seems like maybe he is assuming that it can
keep multiple settings, as he said he has more than one antenna for
most bands. Does the KAT500 keep a separate set of memories for each
ANTx port, or is there just ONE for each band,
And that is good to know - thanks guys!
On Saturday, Mar 1, 2014, at Saturday, 2:28 PM, Fred Jensen wrote:
On 3/1/2014 11:04 AM, Jim Bennett wrote:
As I read Fred's note, it seems like maybe he is assuming that it can
keep multiple settings, as he said he has more than one antenna for
I am also interested in this topic. I am in the process of getting a Davis
Vantage Pro and wonder where this should be located relative to proximity
to an antenna?
I'm running mine mounted right at the top of the tower, within a few feet of the
tribander (see picture on QRZ page). I've
This begs the question. The original poster said he was getting ready
for the hurricane season. Given what you say, I doubt the Davis
anemometer cups would survive a near hurricane blow.
Ditto with my Oregon scientific.
So maybe the original postee has to reassess just what he wants from
I have the Davis Pro also for about 6 years. No RF issues. Antennas all over
the place 160- 450 MHz. Only problem is I can't keep the spiders out of the
rain bucket, hi.. Put up a Home Depot tube gauge. Easy to clean.
Mel, K6KBE
On Saturday, March 1, 2014 3:04 PM, Brian Alsop
This begs the question. The original poster said he was getting ready
for the hurricane season. Given what you say, I doubt the Davis
anemometer cups would survive a near hurricane blow.
Hard to say. I would expect any hail or flying debris to be ample to killing
the anemometer, but
The advertisements for that particular brand of 700Hz filter are
passed through my junk filter or I wouldn't have seen it.
I'm surprised you didn't delete the entire advertisement. I guess
I'm going have to add the phrase limited production to my filters.
In the K3, as it comes from the factory
Gary,
I am surprised to hear they are cheaply built, as depending on the model
and options that are selected, these could run nearly $1000.
Bob
On 3/1/14, 15:50, mcduf...@ag0n.net mcduf...@ag0n.net wrote:
I am also interested in this topic. I am in the process of getting a
Davis
Vantage Pro
Eric has permitted such announcements, but limits them to one a month.
You will see offers to build a K2 that come in that same category.
Personal comment -- I particularly like the 700 Hz CW filter in my K3.
I got used to tuning the bands using a 700 Hz filter width in my K2, and
opted for
No question about it, they're necessary. I discovered these spurs five years
ago. (My how time flies...seems like only yesterday)
Wes N7WS
On 3/1/2014 5:35 AM, Stewart Rolfe wrote:
After upgrading my Softrock based panadapter to the more sensitive Lp-Pan some
time ago I was seeing
If you can, help me out here Don ...
These are roofing filters. From my perspective, which is likely wrong,
their job is to restrict the bandwidth presented to the 2nd mixer [and
downstream ADC]. They are of most value when you have very strong [i.e.
geographically close] signals adjacent
I don't want to belabor this but I do want to understand, this is sort
of science so it therefore must be hard :-) All this assumes MAN mode
which is what I run in.
1. There are defined band segments where the KAT500 stores matching
solutions if trained, by antenna port.
2. If a band
I have a Davis VantageVue mounted on my Hazer a few feet from my Yagi. A kw
out of that Yagi doesn't phase it in the least despite the close proximity.
http://www.ae5x.com/blog/wp-content/uploads/2013/02/wx.jpg
If I had it to do over again I'd buy another one.
And no - no RFI to the K3.
*Good evening, All.*
*I'm needing to send my KX3 (S/N 2917) in for service. When I try to
charge the internal batteries, the display indicates my KX3 DOES NOT have a
Battery charger installed but it definitely does. [Rayovac NiMH 2400
mAh] (The rig is NOT under warranty. I purchased this KX3
As usual, Fred has things pretty much right. Here in Silicon Valley narrow
roofing filters are needed to keep the local massive signals out of the
receiver. With the 500 Hz 5-pole filter I can operate within a few hundred
hertz of the big guys with very little problems. In fact it is pretty
Fred,
In general you are correct. However, there is one other effect that
the narrow roofing filters are not going to resolve - garbage from
your neighbors in the form of key clicks, transmitted phase noise and
IMD. I see it every time my neighbor (.66 mi) comes on a band with
his Icom POS
That's why on more than one occasion I've said that to evaluate a transceiver's
receiver performance, instead of a couple of HP8663 signal generators, two other
like transceiver transmitters should be used as the signal sources for the
measurements, until that is, our transceivers have the
Fred,
Everything you say is true, the DSP does set the final filter width, but
the hardware AGC can cause pumping in the presence of nearby strong signals.
Since my normal desired CW tuning width is in the vicinity of 700 Hz, I
bought and installed one of the 700 Hz filters. YMMV some say
Gary,
I am surprised to hear they are cheaply built, as depending on the model
and options that are selected, these could run nearly $1000.
The cheaply built comment is about my weather station. I sells for less than
$100 when available.
Gary
The DX contest will likely be eating 20 meters up tomorrow morning. Therefore,
let’s take the week off. Have a great week and I’ll see you on the ninth of
March.
73,
Phil, NS7P
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I have had my KX3 for about 3 weeks and got the KXPA100 with the 100 watt tuner
last week with the Elecraft interrogation KXPA100 cable set. What a sweet set
up!
I am having a blast with this set up and have been off HF for several yeas. I
mostly work CW and PSK31. I am getting my CW skills
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