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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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Re: Installation of DSL = buzzing on AM band 500's to about 1000kHz
Hi:
I'm sorry I am no help re your problem... but I will be reading the mail as I am curious about your EMI situation and the DSL installation. Does your phone line come to your house via buried
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Jim Dunstan <jimdunstan@...>
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#174
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Installation of DSL = buzzing on AM band 500's to about 1000kHz
Installation of DSL has caused terrible overnight
buzzing from the 500's to about 1000kHz.
Phone company made adjustments at street and
house.
Buzzing on portable radios re-radiated in
vicinity
of
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Tom,webmaster,indigotalkradio <indigotalkradio@...>
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#173
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Re: REALLY dumb question from a non radio guy.
It probably means the loop is not really tuned to null; instead it
is tuned -near- null, and is putting out just enough at 180 out of
phase with the internal ferrite to cancel out the signal
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Steven Greenfield AE7HD
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#172
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Re: REALLY dumb question from a non radio guy.
I am sure there is no 'auto disconnect' .... most receivers with the ferrite antenna that have external antenna connections will operate both at the same time. There are a few exceptions .... for
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Jim Dunstan <jimdunstan@...>
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#171
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