Active antenna Q
 

Does anybody know which antenna I am talking about?

It fits inside a 8" x 1.25" piece of pvc pipe and half of the pc board
is the antenna. It uses a U310 fet and some bipolar following that.
Maybe a 2N5809. Stick it on a non-magnetic pole and the 12v supply is
in the house. I am looking for the link to it. A friend and I are
building them, but I left the documentation at my other QTH. If you
have any experience with it then I would like to hear what you think.

I'm also building the AMRAD active antenna, but the high dollar fets
aren't here yet.

regards,
NEO

Active antenna Q
 

On Jul 4, 10:44 pm, N9NEO wrote:
Does anybody know which antenna I am talking about?

It fits inside a 8" x 1.25" piece of pvc pipe and half of the pc board
is the antenna. It uses a U310 fet and some bipolar following that.
Maybe a 2N5809. Stick it on a non-magnetic pole and the 12v supply is
in the house. I am looking for the link to it. A friend and I are
building them, but I left the documentation at my other QTH. If you
have any experience with it then I would like to hear what you think.

I'm also building the AMRAD active antenna, but the high dollar fets
aren't here yet.

regards,
NEO

I think you are talking about one of Dallas Lankford's active
antennas.
http://www.kongsfjord.no/
Look under "The Dallas Files"

He has several different designs.

I think the one you are wanting is in the "Low Noise Active Antenna AC/
DC Power Supplies"
pdf.

Unless you have a world class receiver, the difference between the
simpler antenna
that uses affordable JFETs and the other will be minimal.

I would suggest you give serious though to building the dipole
version.

Much better IMD characteristics.

Terry

Active antenna Q
 

In article .com,
N9NEO wrote:

Does anybody know which antenna I am talking about?

It fits inside a 8" x 1.25" piece of pvc pipe and half of the pc board
is the antenna. It uses a U310 fet and some bipolar following that.
Maybe a 2N5809. Stick it on a non-magnetic pole and the 12v supply is
in the house. I am looking for the link to it. A friend and I are
building them, but I left the documentation at my other QTH. If you
have any experience with it then I would like to hear what you think.

I'm also building the AMRAD active antenna, but the high dollar fets
aren't here yet.

Could be the North country active antenna.
http://www.northcountryradio.com/Kitpages/pactant.htm

--
Telamon
Ventura, California

Active antenna Q
 

On Jul 4, 7:58 pm, Telamon
wrote:
In article .com,

N9NEO wrote:
Does anybody know which antenna I am talking about?

It fits inside a 8" x 1.25" piece of pvc pipe and half of the pc board
is the antenna. It uses a U310 fet and some bipolar following that.
Maybe a 2N5809. Stick it on a non-magnetic pole and the 12v supply is
in the house. I am looking for the link to it. A friend and I are
building them, but I left the documentation at my other QTH. If you
have any experience with it then I would like to hear what you think.

I'm also building the AMRAD active antenna, but the high dollar fets
aren't here yet.

Could be the North country active antenna.
http://www.northcountryradio.com/Kitpages/pactant.htm

--
Telamon
Ventura, California

Not sure. I don't see the schematic on the north country site. I'm
sure thsere are a bunch of good designs out there. I'll post a link
to it when I get back to NY next week. My friend said he was very
happy with the performance and will compare to a couple of other
antennas he has. Maybe I can coax him into writing something down and
publish.

Crystalonics fets got here for the Amrad. The wife thought they were
LEDs so when I asked for fets she told me they didn't come.

NEO

Active antenna Q
 

In article .com,
N9NEO wrote:

On Jul 4, 7:58 pm, Telamon
wrote:
In article .com,

N9NEO wrote:
Does anybody know which antenna I am talking about?

It fits inside a 8" x 1.25" piece of pvc pipe and half of the pc board
is the antenna. It uses a U310 fet and some bipolar following that.
Maybe a 2N5809. Stick it on a non-magnetic pole and the 12v supply is
in the house. I am looking for the link to it. A friend and I are
building them, but I left the documentation at my other QTH. If you
have any experience with it then I would like to hear what you think.

I'm also building the AMRAD active antenna, but the high dollar fets
aren't here yet.

Could be the North country active antenna.
http://www.northcountryradio.com/Kitpages/pactant.htm

--
Telamon
Ventura, California

Not sure. I don't see the schematic on the north country site. I'm
sure thsere are a bunch of good designs out there. I'll post a link
to it when I get back to NY next week. My friend said he was very
happy with the performance and will compare to a couple of other
antennas he has. Maybe I can coax him into writing something down and
publish.

Crystalonics fets got here for the Amrad. The wife thought they were
LEDs so when I asked for fets she told me they didn't come.

The following link shows a FET amplifier followed by a bipolar
transistor coax line driver. Different FET and transistor than you asked
for though. See page two for the schematic.

http://www.northcountryradio.com/Published/actant_0896/actant_0896.htm

--
Telamon
Ventura, California

Active antenna Q
 

N9NEO wrote:
On Jul 4, 7:58 pm, Telamon
wrote:
In article .com,

N9NEO wrote:
Does anybody know which antenna I am talking about?
It fits inside a 8" x 1.25" piece of pvc pipe and half of the pc board
is the antenna. It uses a U310 fet and some bipolar following that.
Maybe a 2N5809. Stick it on a non-magnetic pole and the 12v supply is
in the house. I am looking for the link to it. A friend and I are
building them, but I left the documentation at my other QTH. If you
have any experience with it then I would like to hear what you think.
I'm also building the AMRAD active antenna, but the high dollar fets
aren't here yet.
Could be the North country active antenna.
http://www.northcountryradio.com/Kitpages/pactant.htm

--
Telamon
Ventura, California

Not sure. I don't see the schematic on the north country site. I'm
sure thsere are a bunch of good designs out there. I'll post a link
to it when I get back to NY next week. My friend said he was very
happy with the performance and will compare to a couple of other
antennas he has. Maybe I can coax him into writing something down and
publish.

Crystalonics fets got here for the Amrad. The wife thought they were
LEDs so when I asked for fets she told me they didn't come.

NEO

heres the Poop on the North Country Antenna

http://www.northcountryradio.com/Pub...0896/page1.htm

Please not the semiconductors have been updated. I have had the antenna
in service in a suburban setting trouble free for more than 1 year

Good buy...Paid extra for them to assemble it for me

yodar in Orlando

Active antenna Q
 

schreef in bericht
oups.com...
On Jul 4, 10:44 pm, N9NEO wrote:
Does anybody know which antenna I am talking about?

It fits inside a 8" x 1.25" piece of pvc pipe and half of the pc board
is the antenna. It uses a U310 fet and some bipolar following that.
Maybe a 2N5809. Stick it on a non-magnetic pole and the 12v supply is
in the house. I am looking for the link to it. A friend and I are
building them, but I left the documentation at my other QTH. If you
have any experience with it then I would like to hear what you think.

I'm also building the AMRAD active antenna, but the high dollar fets
aren't here yet.


Google for 'Miniwhip'

--
Greetings from Groningen ^top^ of Holland

MRe

Active Antenna Question - PA0RDT "Mini-Whip" {Active} Antenna
 

On Jul 5, 7:10 pm, RHF wrote:
On Jul 5, 3:24 pm, "MRe" wrote:

schreef in ooglegroups.com...

On Jul 4, 10:44 pm, N9NEO wrote:
Does anybody know which antenna I am talking about?

It fits inside a 8" x 1.25" piece of pvc pipe and half of the pc board
is the antenna. It uses a U310 fet and some bipolar following that.
Maybe a 2N5809. Stick it on a non-magnetic pole and the 12v supply is
in the house. I am looking for the link to it. A friend and I are
building them, but I left the documentation at my other QTH. If you
have any experience with it then I would like to hear what you think.

I'm also building the AMRAD active antenna, but the high dollar fets
aren't here yet.

- Google for 'Miniwhip'



--
Greetings from Groningen ^top^ of Holland

MRe

-INFO on the- PA0RDT "Mini-Whip" {Active} Antennahttp://www.cvni.net/radio/e2k/e2k029/e2k29miniwhip.html

The PA0RDT "Mini-Whip" Active Antenna
-designed by- Roelof Bakker [PA0RDT] that's PA-Zero-RDThttp://www.radiopassioni.it/pdf/pa0rdt-Mini-Whip.PDF

http://sdr-1000.blogspot.com/2006/09...ore-informatio...

http://www.veron.nl/afd/voorne_putte...rdt-Mini-WhipG...

http://www.geocities.com/n2uhc/blog.html
- - - Entry for March 2, 2007

http://www.beaconworld.org.uk/beaconrx.htm

PA0RDT-Mini-Whip {Active} Antenna - Inch-per-Inch - It Works !http://groups.google.com/group/rec.r...4666783b0a2f6?

sometimes . . . smaller can be good - iane ~ RHF
.
.
. .

That's the one! Good work RHF.

NEO