Locked
Re: Whoo hoo!
In that case, I better say hello to you all as this is my first post to this loopy group! I am currently experimenting and finalising the construction of a 3/4 inch copper tubing loop 14 foot
By
Michael Stevenson <portstevos@...>
·
#76
·
|
Locked
Cuppla Loops
All,
Can't post the Rod Newkirk, W9BRD, article on distributed capacitance
multiturn loops but I did find a web site with pics, diagrams and
info for a 7 mHz version
By
qrpbear
·
#75
·
|
Locked
Re: Street Sweepings
Bear,
Old Bothell is about like always. The changes: The Sammamish River
Trail runs along the (insert guess) river. Univ. of Wash. &
Shoreline Comm. Coll have a shared branch campus overlooking
By
Steven S. Coles <steven_coles@...>
·
#74
·
|
Locked
Re: Street Sweepings
Steven,
I wonder which would be more effective at pushing current (pulling
current?) into the loop.. the Pi-net or a Colpitts style circuit akin
to an unbalanced version of the old Army Loop. Guess
By
qrpbear
·
#73
·
|
Locked
Re: Questions and Hare-brained ideas
Barry,
Hmmm... does anyone have a good source for Mu-metal at all?
It's been in _very_ short supply ever since Mu sank beneath the
waves!
<GD&R>
But doesn't Mu-metal tend to resist flux
By
qrpbear
·
#72
·
|
Locked
Re: Questions and Hare-brained ideas
Bear, et al:
Here is something I found on the Public Seismic Network archives.
"New article in the May '96 issue of Scientific American (pg 98) describes
construction of VLF antenna. Their plans
By
Barry Savage <sofistic@...>
·
#71
·
|
Locked
MY first post here.
I own four loops, the first two were the Radio Shack loops, which is/are a fine product. *BUT* - I wanted more because I knew I could get more out of a loop antenna.
My second passion (very
By
Gregg <dxlover2003@...>
·
#79
·
|
Locked
Re: Whoo hoo!
Most excellent tamales!!
A modest proposal...
How about renaming the group to loop_and_compact_antennas? If the
other members are agreeable to broadening the spectrum on this topic
now would seem
By
qrpbear
·
#70
·
|
Locked
Re: Questions and Hare-brained ideas
Steve et Barry,
I vaguely recall seeing somewhere a description of an ELF loop(stick)
antenna using rebar as the core. Mebbe on <http://www.vlf.it>. I
don't remember for sure.
The helix antenna is
By
qrpbear
·
#69
·
|
Locked
Re: Questions and Hare-brained ideas
Steve:
-------------
Actually, I have thought of using such an arrangement. Think I will now have the motivation to go out and get some welding rod.
--------------
====
By "square" I was using a
By
Barry Savage <sofistic@...>
·
#68
·
|
Locked
Whoo hoo!
We're up to 55 members! And lots of activity.
Remember, if you have not posted yet, all new members are moderated.
So don't be alarmed if your first message takes a few hours or a day
to appear. I
By
Steven Greenfield AE7HD
·
#67
·
|
Locked
Re: Questions and Hare-brained ideas
properties of common materials, and find these things rather hard to
discover. The few times I have asked about them on different
electronics-oriented groups, most people have dismissed them as
By
Steven Greenfield AE7HD
·
#66
·
|
Locked
Questions and Hare-brained ideas
Hello All:
For some time now, I have been wondering about the electromagnetic properties of common materials, and find these things rather hard to discover. The few times I have asked about them on
By
Barry Savage <sofistic@...>
·
#65
·
|
Locked
Re: Testing, Testing...
Scott:
Thanks. Everything seems to be back to normal now.
Barry
By
Barry Savage <sofistic@...>
·
#64
·
|
Locked
Re: Street Sweepings
Bear,
Guess my math-speak was a bit more obscure than the duck-speak in my
direct-conversion receiver. In less mathy technese:
1. While it looks like a pi network, it operates more like an
By
Steven S. Coles <steven_coles@...>
·
#63
·
|
Locked
Re: Testing, Testing...
works here
By
Scott Savage KC7WDG <kc7wdg@...>
·
#62
·
|
Locked
Testing, Testing...
Hello All:
I noticed that I wasn't getting any email from the various groups I
belong to, and checked Yahoo groups and each of then said my mail
was bouncing, so I went through their reactivation
By
Barry Savage <sofistic@...>
·
#61
·
|
Locked
Re: Street Sweepings
Steve,
Ahh... thanks for that. I'm still puzzling over the math but perhaps
they point to a possibility of success.
For those who may not be aware of the "Street Sweepings Loop" it is
based on the
By
qrpbear
·
#60
·
|
Locked
Street Sweepings
Bear,
I tried to answer you on the GCC Loop Group. For some reason the
post didn't appear. So:
Bear,
My shoggoth upchucked allowing me to provide the following example:
An impedance analyzer
By
Steven S. Coles <steven_coles@...>
·
#59
·
|
Locked
New file uploaded to loopantennas
Hello,
This email message is a notification to let you know that
a file has been uploaded to the Files area of the loopantennas
group.
File : /SpiderWeaveCoils.txt
Uploaded by :
By
loopantennas@...
·
#58
·
|