Unfortunately the KAT100-2 doesn't seem to be available any longer, even
though it is still described on the man page for the tuner.
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There aren’t many 12 tower arrays out there. Of the few, the pattern is almost
always a tight cardioid. 9 tower arrays are more common. The largest I have
built is 10 towers. If I had my way that would have been 12 towers. There are
many subtle technical reasons for that. A lengthy discussion.
The EC2 is remarkably easy to clone. It's all straight cuts and four
simple bends. I did it with the inexpensive Harbor Freight 8"
shear/brake. The 2D connectors are simple and ingenious, but very very
tedious to make. I just used long rails made from 1/4" square aluminum
stock and tapped them
I have complete, original, unassembled, KAT100-2 in the original box
that I never got around to building. If anyone is interested - contact
off list.
Doug -- KJ0F
On 12/21/2018 1:33 PM, David Woolley wrote:
Unfortunately the KAT100-2 doesn't seem to be available any longer,
even though it is
Thanks to everyone who expressed interest in the KAT100-2 (With EC2
enclosure). I was kind of taken by surprise. Two years ago I decided to
leave my K2 as is with the amplifier installed. The KX2 kind of made a
QRP only K2 obsolete. So I bought another KAT100 because I thought the
K2 and
David,
That is true. The problem is that the EC2 enclosure is no longer
available. The supplier is no longer in business.
Fortunately, there is a "cure" (even if it is only temporary - until
Elecraft runs out of the panels).
Elecraft still has some KAT100-2 front and rear panels available,
I worked in TV where we had one tower, and one antenna, and just
downtilt to worry about...
73s and thanks,
Dave (NK7Z/NNR0DC)
https://www.nk7z.net
Award Manager, 30MDG Grid Contest
ARRL Technical Specialist
ARRL Volunteer Examiner
ARRL OOC for Oregon
On 12/21/18 2:19 PM, Bob McGraw K4TAX
Hello everyone,
I just missed out on the KAT100 kit offered earlier today. Does
anyone have any unbuilt kits that they would like to turn to cash? Or if
you have a kit that you want built for you, I am the guy. I just love to
build stuff and Elecraft kits are the best. Please let me
WOW! 12 towers. I've only worked with a 3 tower directional array
that was switched between 2 frequencies and 4 different patterns. A
small 100 KW shortwave transmitter and it too switched between the 2
frequencies. Flip the switch and hope that the TX quenched as it
should, all
My KPA500 used to be on a 220v line, but it is now in an area where that is not
possible. It is on 120v, in a 65 year old house. Further, I am running it on
a 10ft appliance type heavy extension cord. I cannot change these
circumstances for the forseeable future.
No load HV is 78v. Under
Vic, it may well be your imagination (!) but you may also be hearing the
rejection that your tuner gives you, particularly to strong AM stations in the
broadcast band. My measurements, as well as circuit simulation, show about a 40
dB rejection of AM stations when the tuner is tuned to 40
I just replaced my single-ended T-network tuner plus balun with a
massive old Johnson Matchbox. It is very selective, unlike the T
network. It is as if there is a sharp bandpass filter between the
antenna and the rig.
This may be totally imaginary, and there's no easy way to A/B test it,
but
Vic,
I have long been an advocate of the parallel tuned circuit matching
network, and an oldie but goodie of that is the Johnson Matchbox. It is
a bandswitching version of the old plug-in coil tuners. The matching
range is not as great as that with the plug-in coils with movable taps
on
Victor,
Somewhere in the collection of radio stuff I own, there is a Johnson
Matchbox which I haven't used in 20+ years, but I do remember a few
things about it. From what you say, I infer that you are using the KW
version, mine is the 275 Watt unit. I believe they used similar designs.
Eric,
I think if you change the tap on the transformer, the no load voltage
will be too high. But you can try it and see if the no-load voltage
goes too high - move the tap back if it goes too high.
Your problem is likely with the voltage drop on the 120 volt line. Is
the receptacle
The speaker wire loss study page:
https://www.kn5l.net/SpeakerWire/
is updated with #22 measurement and model. A good demonstration of vinyl
RF absorption. The larger #18 speaker wire with greater vinyl content
results with an increased loss over #22 speaker wire.
Where the #18 vinyl loss is
The Phasor used by directional stations is not a matching unit. It is a power
divider phasing unit as each tower gets different current, phase to develop the
pattern. Each individual tower has an ATU. The phasor for a 12 tower station
is fascinating as is the pattern.
Ray
W8LYJ
Sent from my
I have the same problem with my K3s. When I put the subreceiver, it
immediately appears HI CURR in the display. I checked the user manual and
said that 2 speakers must be set up because otherwise the transceiver will
be shorted. I have configured it with 1 speaker and 2 speakers and HI CURR
German,
Does Hi CURR appear in receive, or only when you transmit?
That message has no relationship with the speakers.
73,
Don W3FPR
On 12/21/2018 11:41 AM, German Duran wrote:
I have the same problem with my K3s. When I put the subreceiver, it
immediately appears HI CURR in the display. I
Gene,
I have built three K2s. #1 was sold to buy a KX3, but I missed the K2 so I
built another one. It was was killed by a lightening strike because some moron
operator forgot to unhook, and then forgot about it...
Building this equipment has been the most fun I've had in this hobby, and it's
20 matches
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