Having now given up any hope of ever getting my Perseus SDR to work reliably
under Windows 7 with CW Skimmer,
I'm now looking for another SDR Rx. I have been using the Perseus as a
panadaptor with my K3 for quite a few years. I love Elecraft products and
wonder if a KX3 is the way to go?
My
I have had many requests from owners of Android phones for an Android version
of my apps for the Apple iPhone. I am happy to announce that the following
micro manuals are all available for Android phones now:
1. K3/KX3 Programmer's Reference
2. K3 Micro Manual
3. P3 Micro Manual
4. KX3 Micro
Hi Mike,
Tnx for the nifty apps. Just purchased the K2 Micro Manual. Always happy to
help support a fellow ARO. Take care es...
Vy 73 de Bert
WA2SI
Sent from my android device.
-Original Message-
From: Michael Downs k...@verizon.net
To: elecraft@mailman.qth.net Reflector
These are excellent! Glad to see them on Android devices!
Tnx es 73!
Randy, KS4L
On Sep 28, 2013, at 5:59 AM, Michael Downs k...@verizon.net wrote:
I have had many requests from owners of Android phones for an Android version
of my apps for the Apple iPhone. I am happy to announce that
One way to quantitatively evaluate power versus probability of
communicating is to use the VOACAP Online tool:
http://www.voacap.com/prediction.html
The tool includes transmitter power at several steps, 1, 5, 10, 50, 100,
etc. Set the transmitter at your location and the receiver about 1300
miles
All,
Thanks for the comments. No one has mentioned anything other than the USB
to Serial so maybe I have everything else covered (fat chance!).
I planned to use the single USB to Serial along with the switch because I
already had all the cables and adaptors and the switch on hand and rarely
Hello,
Here is a weird problem.
I have two dipoles in the backyard, one connected directly to a K3/10 and
the other to a KX3.
* No external tuners or any other equipment in the middle
* K3/10 is on 40 meters to 7.187.00
* KX3 tuned to the same frequency
* KX3 powered by internal batteries (same
The KX3 has some leakage of the local oscillator when receiving. You can
elimination this by turning on the isolation prepamp. Use the RX ISO menu item.
See page 38 in the manual.
wunder
K6WRU
On Sep 28, 2013, at 7:56 AM, VaibhaV Sharma wrote:
Hello,
Here is a weird problem.
I have two
Vic,
Too bad you cannot consider a yagi for 20-10m. That would sit on a
mast secured to the small roof-top building. So a 30x 10 foot
space? I wonder if the 20x10 foot building extends beyond the 30x20 area?
It it extends so total length is 50-feet You could put up a doublet
across the
Vic K2VCO-2 wrote
This argument will never die.
But remember the last time you called CQ and a station came back that you
could hear, but
not copy. (I'm thinking CW, but it also applies to SSB).
You know he is in there, but despite struggling with the narrowest
possible bandwidth and
My P3 is freezing while in RX mode, no transmit. I have a K3 -P3-KAT500 and
KPA500
My firmware for P3 is MCU 01.26
I have beads on all cables going to the P3 and I am using a separate power
supply
Any thoughts?
__
Elecraft
On 9/27/2013 11:22 PM, Chuck Smallhouse wrote:
Can you give us the model numbers of the Numark and the Tascam USB
Sound cards that you recommend ?
The Numark doesn't have a number, or at least I've never found one, and
I don't remember the number of the Tascam (the one I have has long been
I don't recall where I found this but hopefully it will be of help to K2
owners:
K2 Blinking Annunciators
Decimal right of 1 kHz digit = LOCK On
MHz Decimal= SCAN On
Decimal left of Mode Ind= AGC
Look up a cobweb antenna, it's a folded dipole design that works quite well. I
built one and I really like the performance.
Thanks
Don
Sent from my iPad
On Sep 28, 2013, at 5:01 PM, Edward R Cole kl...@acsalaska.net wrote:
Vic,
Too bad you cannot consider a yagi for 20-10m. That would
Here is a diagram of my space (use fixed width font):
|| | |
|| | |
|| | |
|- |
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Hi Vic, You have a perfect place, I love it. No.. not a lotta real estate..
but it is wonderful How about... a a high as you can vertical on the top of
your shack to be.. with 30 - 40 radials laid out and held in place with sand
bags, bricks, or the like.. maybe just tied to the edge... make
Don't discard the magnetic loop as a possibility:
http://radiopreppers.com/index.php/topic,180.0.html
Gil.
--
PGP Key: http://keskydee.com/gil.asc
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Help:
Go for the beam ... a pair of butternut verticals and phase 'em! ... maybe
three in a triangle for more directions.
73, Mike WA5POK
--
From: Dale Putnam daleput...@hotmail.com
Sent: Saturday, September 28, 2013 2:49 PM
To:
Good news, reloading the firmware seemed to do the trick. Thanks for the
suggestion.
Greg
WI4T
--
View this message in context:
http://elecraft.365791.n2.nabble.com/P3-Freezing-while-in-RX-tp7579330p7579338.html
Sent from the Elecraft mailing list archive at Nabble.com.
The problem with the magloop is that it's hard to build one that can
handle more than about 100 watts. The voltage across the capacitor gets
astronomical!
On 9/28/13 11:53 AM, Gil G. wrote:
Don't discard the magnetic loop as a possibility:
http://radiopreppers.com/index.php/topic,180.0.html
I'm no expert on loops, but isn't the voltage lower on a BIG loop?
On 9/28/2013 12:22 PM, Vic, K2VCO wrote:
The problem with the magloop is that it's hard to build one that can
handle more than about 100 watts. The voltage across the capacitor
gets astronomical!
On 9/28/13 11:53 AM, Gil G.
Vic,
If that were my situation, I would put up 2 inverted vees - at right
angles to each other. Each fed with ladderline.
A pole as high as you can manage right in the middle, and a pole in the
each corner of the larger building.
Arranged that way, you have room for 2 44 foot doublets (even
Good Afternoon,
I need to get this out before I lose my Internet access. Tonight I
am to receive approximately 10 inches of rain with winds up to 80 mph.
Currently my connection is terrible; I only expect it to get worse. I
should lose power tonight when the broken trees fall through the
K2 #7449 VCO alignment difficulty.
Cannot get 4.0 MHz R30 voltage to change at all - it measures 7.97V. Have
confirmed all the cap values, varicap diodes are correct parts, T5 wound
and wired correctly.
Have scoped the area comparing to a second operational K2 the wave forms
look and behave
A so-called magnetic loop is defined as one smaller than about 1/3 wl
in circumference. Bigger than that is a loop, but has a different
pattern -- and you are correct that the voltage across tuning components
is lower.
On 9/28/13 12:38 PM, Lynn W. Taylor, WB6UUT wrote:
I'm no expert on
Certainly, but I've reached Russia with mine (21ft. perimeter) using 5W with
the loop inside the house on the second floor, turned the wrong way.. So, they
do work really well.. If you're into contesting, I understand, otherwise, you
don't need more than a few Watts CW, maybe 25 for SSB. You
I had the privilege of attending Eric's excellent presentation on the
KX3, etc, at the National Hamfest today. It was very well attended, the
entire lecture room being filled and people standing at the back. It was
good to hear first hand about the development of the KX3 from its early
beginnings
Rob,
There is either too much inductance or too much capacity in the VFO
circuit - the high voltage means that the K2 is trying to reduce the
capacity to bring things into line.
Count the turns on T5 very carefully. Each wire through the center
counts as one turn - a full wrap around the
Don,
Thank you, with this it only took me 3 minutes to fix it with this info.
The coverage on T5 was the critical factor here.
The good news is that I've spent the last 4 hours confirming that
EVERYTHING else around the VCO is correct!
73, Thanks again!
kc2vmp
On Sat, Sep 28, 2013 at 5:11
Good news! Brought the rig home and connected to a different RS-35A and
cable and all is well!! So, it's either the power supply or cable--easy and
much less expensive fixes.
Thank you all for your suggestions!
Gary W7TEA
-
73,
Gary W7TEA K3 #1001, #5763
--
View this message in
*Hi, All.*
*What is the voltage of the 2.9 AH Gell Cell Battery for the K2 when
fully Charged?*
*Thanks and Best 73.*
*Jim.*
*WA4NTM*
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Help:
Dale's suggestion would also minimize the RF field directly under the
antenna and noise pickup from within the building. I'd probably go with a
trap vertical or a pair of verticals for 40 through 10 meter coverage since
a 1/4 wavelength on 40 is a full wavelength on 10 -- way too long for best
Vic K2VCO-2 wrote
I am moving to an apartment on the top floor of a 10 story building. I
have access to the roof which has a 30' x 10' flat space. On one edge of
this space is a building 9' high with a flat roof of about 10' x 20'. I
can put up antennas on top of this little building and on
We all tend to think the worst at times like this. In the absence of test
equipment, I'd examine the fuse(s) to see if it shows the obvious. I would
sooner think that the crowbar circuit has operated. I have found that several
times over the years without a fuse operating. It would look like
Take a small piece of scotchbrite pad and clean the fuses and holders
if possible and use some deoxit to the fuse connector and fuses. They can
build up a high resistance oxidation causing severe voltage drop. Then try
the cable on the good supply. If that works then try the reworked cable
with
FWIW, I worked a guy in Hawaii who had an arrangement I liked. He fed a
vertical on the beach as the driven element. Then he used another vertical as
either a reflector, or a director. He had sockets in a pre-measured radius
around the driven element. When he wanted to aim his signal a
IMHO - If wire, I would make a fan dipole. Multiple dipoles (one length
for each band) connected together at the feed point and run together (a few
inches apart) for their full length. For the 40 meter portion if it is too
long just let the ends hang down as long as you are using fiberglass
I want to thank everyone who responded on and off list to my request for
suggestions about what to put on a rooftop 10 stories up!
I have been EZNEC-ing my butt off all day, and so far the winner is the
suggestion of KL7UW and W4TV, a 20'x30' horizontal rectangular loop
about 20' above the
I was curious to determine what a 3 db increase in power output might
mean in terms of total number of possible contacts. So I set up my K3
to run WSPR on 20 meters for a while today:
At regular intervals over the course of 9 hours the power output was
toggled back and forth between 5 and 10
One BIG problem which I should have mentioned before is that while you
might get away with it on CW, doing this would increase IMD for SSB or
digital modes a great deal.
On 9/28/13 7:19 PM, drewko wrote:
I was curious to determine what a 3 db increase in power output might
mean in terms of
That depends upon what one means by QSO. I stepped out of the discussion
when it was abundantly clear that a QSO for some means teasing a call sign
out of the noise on CW.
That's fine for DX-chasing and even much contesting.
For me, a rag-chewer, a QSO occurs when I can exchange a CW message
One trick the power company uses is to put a short stub out the side of the
pole and then run a line from the top over the stub back to the base. Makes a
truss of sorts.
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David K0LUM
On Sep 28, 2013, at 9:13 PM, Vic, K2VCO wrote:
Now there is
The original request was for emergency communication. That means a reliable
exchange of unknown information without spots or known frequencies. This is not
the same as most DX, SOTA, or WSPR and very different from exchanging 59 and
callsigns.
Though, if you really want reliable emergency
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