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Re: Kiwa loop
Signals frequently come in at an angle. The ability to tilt the loop
gives you the ability to capitalize on this phenomenon. Often you
can get a higher peak or deeper null with a tilted
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John Nelson <jnelson123_us@...>
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#194
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Kiwa loop
I have noticed that the Kiwa loop along with other loops can be
tilted in the axis of the null. Does this help to increase the null
of certain stations or does it have another purpose? Maybe null
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mcqueen_34@...
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#193
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Re: Loop Details
Thanks very much Bear for your nice comments and glad you liked it, I hope someone else can use and benefit from this loop for the good of DXing.
Best regards!
Michael.
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Michael Stevenson <portstevos@...>
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#192
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Re: Fractal antenna
Lupu,
A VHF/UHF fractal antenna is a very, very small animal indeed!
Dimensions and angles are extremely critical.
The only information source I have encountered that actually gives
design
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qrpbear
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#191
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Re: Loop Details
Michael,
I must say that is one very impressive loop!!! You can be sure I'll
be consulting your drawings and pictures the next time I build an HF
loop.
This is definitely one to point people to
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qrpbear
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#190
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Fractal antenna
Does anyone has a schematics for a VHF/UHF multiband fractal antenna.
I'm very interesting to build one. Thank's.
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Lupu Valerian <vali_lupu@...>
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#189
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Re: Loop Details
Thanks Steve, that is most kind of you and much appreciated! Glad you liked it and hope others will gain some ideas for their own loop or just to copy mine.
Best regards!
Michael.
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Michael Stevenson <portstevos@...>
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#188
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Re: Loop Details
Thanks Al, I think that Steve Greenfield has created a folder for me which is very kind of him, so everything is under control.
I hope everyone gains some good info and ideas for creating their own
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Michael Stevenson <portstevos@...>
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#187
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Re: Loop Details
Very nice!
I created a folder called "Remote_Tuned_Loop" and moved them all into
it. It will make it much easier to follow for people looking into the
files in the future.
Steve
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Steven Greenfield AE7HD
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#186
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Re: Loop Details
Michael, very nice job on the antenna. I especially like the motor
control for the variable cap. This allows you to tune the antenna yet
have it away from all local noise sources.
On the files, I
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als_radios <aburzynski@...>
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#185
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Loop Details
Hello everyone,
Full construction details, diagrams and photos have now been uploaded to this group's web site in the Files section under the titles of:
Loop Construction 1
Loop Construction 2
Loop
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Michael Stevenson <portstevos@...>
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#184
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Re: Multi turn Mag. loop
Garth,
For a _tuned_ loop increasing the number of turns moves the tuning
range lower in frequency. For any given frequency, the single-turn
tuned loop will have a larger diameter (and thus greater
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qrpbear
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#183
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Multi turn Mag. loop
I am looking for info as to a 3 or 5 turm Magnetic loop.(using 1.0"
hardline for outdoor stabilty) along with the usual tuning cap. Will
it produce any better results when campared to the same
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Garth M.Conover <ewrtsa@...>
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#182
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Re: LW and MW Loop antenna
John,
That makes sense. At MW especially the additional capacitance could
be problematical. At lower frequencies it might actually prove
beneficial to some degree.
73,
'Bear' NH7SR
wrote:
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qrpbear
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#181
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Re: LW and MW Loop antenna
I was treating the telephone wire as if it was one
cable. Since I was establishing the correct length of
wire by trial and error it was easier that way. I
also theorized that the four wires were so
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john nelson <jnelson123_us@...>
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#180
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Re: New Loop Antenna
Hey Bear,
Yes sir, you bet I did and it works great, also used the relay to switch in the second tuning gang and additional 450 pf of fixed capacitance ( a total of 1350 pf) to tune down to below 2.3
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Michael Stevenson <portstevos@...>
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#179
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Re: New Loop Antenna
Michael,
Hey! It's finished! I am really looking forward to seeing the
pictures. Did you use the remote volume control motor for tuning?
73,
'Bear' NH7SR
<portstevos@t...> wrote:
and in use. It's
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qrpbear
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#178
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Re: LW and MW Loop antenna
John,
Very impressive looking antenna. One question...
Why did you connect the 4-conductor cable wires in parallel? I assume
to resonate the loop.
I am thinking of something similar but series
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qrpbear
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#177
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New Loop Antenna
My new magnetic loop antenna for shortwave is now fully finished and in use. It's performance is extremely impressive and out performs my 15 and 17 metre longwires. This is an active loop with a
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Michael Stevenson <portstevos@...>
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#176
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LW and MW Loop antenna
I just posted a picture of my long wave and middle wave loop in the
pictures section. The actual antenna was made entirely of salvaged
materials for the exception of the brass bolts and nuts in the
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John Nelson <jnelson123_us@...>
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#175
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