40m QRP antenna - best choise?
 

Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a 40m
dipole up)

Thnx in Advance!
73's Dave
WN1QIN / KB1IBE

Unless it is not working for you, the best-cheapest-simplest antenna is the
one that you have. It's is already paid for and installed!

Harold
WD5KCA
"KB1IBE" wrote in message
...
Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a 40m
dipole up)

Thnx in Advance!
73's Dave
WN1QIN / KB1IBE

"KB1IBE" wrote in message ...
Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a 40m
dipole up)

You already have the best-simplest-cheapest QRP antenna.

Thnx in Advance!
73's Dave
WN1QIN / KB1IBE

w3rv

For 40 meters local (out to 300 miles during the day & 800 - 1000 @
night) the 40 meter dipole @ 20' up is a winner. For 40 meters DX, try
the extended double zepp
(http://www.sadona.com/news2/ant_dblzepp.html) up @ 60 feet (at
least). If you own a tuner & want to work portable, try the MINIBAC
(http://www.qsl.net/kq6xa/antenna/), very cheap & very versatile.

Many other ideas @

http://www.cebik.com/radio.html




"KB1IBE" wrote in message ...
Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a 40m
dipole up)

Thnx in Advance!
73's Dave
WN1QIN / KB1IBE

I use 1/2 Wave 40m dipole in my attic...it's no DX magnet but I have earned
WAS every year since 1999 by using it and my QRP rigs. I think in 4 years
my DXCC count is now up to 41 countries.

I use a Ten Tec antenna tuner or the built in tuner in my K1 and I can get
it to match this dipole on 15, 20, 30, and 40m...with 40m and 30m seeming to
work the best.




"Hoss" wrote in message
...
Unless it is not working for you, the best-cheapest-simplest antenna is
the
one that you have. It's is already paid for and installed!

Harold
WD5KCA
"KB1IBE" wrote in message
...
Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a 40m
dipole up)

Thnx in Advance!
73's Dave
WN1QIN / KB1IBE

I'm not sure why people think a dipole, even a fairly low
one, isn't 'good' for DX. You may have to pick your times,
and those times won't always be convenient, but working DX
is certainly not impossible, or even very eceptional.
'Doc

Thnx for responding!
I wanted some insight into other types of low-cost antennas and your
personal experiences with them. I have used folded dipoles made of 300ohm
ribbon with 300ohm feedline and tuner as an effective antenna on 40m and
found it to be reasonable cost.
My present antenna is a cross between a dipole, inverted V and V beam, but
loading it with different homebrew transmitters has produced very different
results.
I really want to lose the tuner altogether and just load up into a nice
1:1 match !

Regards,
ex WN1QIN / KB1IBE


----- Original Message -----
From: "Bill"
Newsgroups: rec.radio.amateur.antenna
Sent: Monday, October 20, 2003 6:04 AM
Subject: 40m QRP antenna - best choise?


I use 1/2 Wave 40m dipole in my attic...it's no DX magnet but I have
earned
WAS every year since 1999 by using it and my QRP rigs. I think in 4 years
my DXCC count is now up to 41 countries.

I use a Ten Tec antenna tuner or the built in tuner in my K1 and I can get
it to match this dipole on 15, 20, 30, and 40m...with 40m and 30m seeming
to
work the best.




"Hoss" wrote in message
...
Unless it is not working for you, the best-cheapest-simplest antenna is
the
one that you have. It's is already paid for and installed!

Harold
WD5KCA
"KB1IBE" wrote in message
...
Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a
40m
dipole up)

Thnx in Advance!
73's Dave
WN1QIN / KB1IBE







"KB1IBE" wrote in message
...
Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a 40m
dipole up)

Thnx in Advance!
73's Dave
WN1QIN / KB1IBE

Thnx for responding!
I wanted some insight into other types of low-cost antennas and your
personal experiences with them. I have used folded dipoles made of 300ohm
ribbon with 300ohm feedline and tuner as an effective antenna on 40m and
found it to be reasonable cost.
My present antenna is a cross between a dipole, inverted V and V beam, but
loading it with different homebrew transmitters has produced very different
results.
I really want to lose the tuner altogether and just load up into a nice
1:1 match !

Regards,
ex WN1QIN / KB1IBE

----- Original Message -----
From: "Bill"
Newsgroups: rec.radio.amateur.antenna
Sent: Monday, October 20, 2003 6:04 AM
Subject: 40m QRP antenna - best choise?


I use 1/2 Wave 40m dipole in my attic...it's no DX magnet but I have
earned
WAS every year since 1999 by using it and my QRP rigs. I think in 4 years
my DXCC count is now up to 41 countries.

I use a Ten Tec antenna tuner or the built in tuner in my K1 and I can get
it to match this dipole on 15, 20, 30, and 40m...with 40m and 30m seeming
to
work the best.




"Hoss" wrote in message
...
Unless it is not working for you, the best-cheapest-simplest antenna is
the
one that you have. It's is already paid for and installed!

Harold
WD5KCA
"KB1IBE" wrote in message
...
Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a
40m
dipole up)

Thnx in Advance!
73's Dave
WN1QIN / KB1IBE







"KB1IBE" wrote in message
...
Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a 40m
dipole up)

Thnx in Advance!
73's Dave
WN1QIN / KB1IBE

"KB1IBE" wrote in message ...

I really want to lose the tuner altogether and just load up into a nice
1:1 match !

Bingo! You've just passed GO, and are ready to have an efficient
antenna system. Lose all the unneeded devices. Feed a 40m dipole with
coax, and tune the antenna to give you a good match. Shouldn't have to
adjust much. Feeding a full wave loop with coax is also a good choice.
Either is very efficient. Even a 1.25 WL dipole would be efficient,
just a different pattern... I usually just use dipoles. Less supports,
work, and just as good for practical purposes on that band. You don't
want to waste power in tuner losses when you run QRP. The losses of
any decent coax on 40m are very low. MK

Mark Keith wrote:
Feed a 40m dipole with
coax, and tune the antenna to give you a good match.

Or feed a 40m dipole with 1/2WL of open-wire line and radiate even more
power. Then adjust the length of the feedline and also work 30m-10m with
no tuner. :-)
--
73, Cecil http://www.qsl.net/w5dxp



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"KB1IBE" wrote in message
...
Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a 40m
dipole up)

Have also good results with a L/2 vertical (aluminum) erected quasi alone in
the field in pulling on the tendors.
quasi on par with a commercial model.

Thierry
ON4SKY
http://www.astrosurf.com/lombry


Thnx in Advance!
73's Dave
WN1QIN / KB1IBE

Cecil Moore wrote in message ...
Mark Keith wrote:
Feed a 40m dipole with
coax, and tune the antenna to give you a good match.

Or feed a 40m dipole with 1/2WL of open-wire line and radiate even more
power. Then adjust the length of the feedline and also work 30m-10m with
no tuner. :-)

Yep, Just as long as you ditch the tuner. I guess instead of 1.25
wave, I should have said 1.5 wave. 3/4 wl a side would be a good match
for coax. You could feed an EDZ ".64 wave per leg" with small loading
coils at the feedpoint, and the losses wouldn't be worth worrying
about. Very low...Or use the correct length of ladder line to get a
good match..Just a regular coax fed dipole on 40m will be very
efficient. What, maybe about 97-98 % for the average 50-100 ft length
of decent coax?? Very low losses anyway. MK

In article , says...
Hello folks,
I am experimenting with QRP-level antennas and wondered what the
best-simplest-cheapest might be. Any suggestions? (so far, I have a 40m
dipole up)

Unless you have the option of putting a beam antenna up, you should be
just fine with the dipole you have! (Assuming of course that what you
have WORKS as it is now, that is.) A 40m dipole should also work well
on 15m, and with a tuner you can probably get a good match on other
bands. The problem with that is that you wind up with less of your
power getting out when you have to tune the antenna than with one which
is already resonant at your desired operating frequency.

In my particular case, I have a "shorty" G5RV antenna up about two
stories over my patio. The standard G5RV is a bit long for my limited
real estate, so I opted for the shorter version that only goes down to
the 40m band. I've listened to some stuff on the 80m band here in the
local area and it doesn't sound attractive enough for me to try to put
the longer antenna up anyway. g With what I have up now, plus a tuner
(necessary with the G5RV), my FT-817 has provided my logbook with plenty
of entries over the past couple of years...!

Good luck to you! If you would, please drop me a note and let me know
what you decide on.

--

-- //Steve//

Steve Silverwood, KB6OJS
Fountain Valley, CA
Email:
Web: http://home.earthlink.net/~kb6ojs_steve