12-21-2011, 10:13 PM
When I finally got around to building my first one. With a little help from Xray, she really works well. I'm really impressed with it's performance. I have to say it rivals my 160' long-wire on the BCB depending. Plus it really cuts the neighbor induced noise, which is an issue around me 
Cost = $15. I'm counting the wire used along with other small odds and ends. I stripped the tuner from one of my junk AA5 sets. It measured about 10 - 467 pf on the tuner. So I used 15 winds for the main loop, and one wind for the sense loop. Connected the sense loop to A/G and the tuner to the main loop (for those that may not know already). I'm sure this is old hat for some of you, but new for me
I tweaked it some with a spacing of .100 between the 15 wind strands. I ended up bringing them together butt up against each other, but noticed no real difference except it now tunes below 500/kHz. I'll probably play around a little with the spacing to see what it does above and below. Anyhow it's no museum piece like some of them I've seen. But it tunes the whole band very well. I stuck it on a lazy-Susan so I can easily turn it for direction. Specs are;
One Philco 37-630 (Philco not required but preferred
)
18" x 18"
10-467/pf tuner
24 gauge magnetic wire
15 turns (spacing can vary)
1 turn sense loop spaced 1" below main loop.
Some of you guys should consider trying one, especially if you lack space for a long wire. Fun to build and the performance is really amazing. I'm planning on another I'll slap together this weekend. Working out the specs now. So do any of you fine gents have or have built loops? If so show us what you have. Tell me you most guarded secrets to a well built loop
Note from site admin: Sorry, but the photo which was attached to this post is no longer available.
Cost = $15. I'm counting the wire used along with other small odds and ends. I stripped the tuner from one of my junk AA5 sets. It measured about 10 - 467 pf on the tuner. So I used 15 winds for the main loop, and one wind for the sense loop. Connected the sense loop to A/G and the tuner to the main loop (for those that may not know already). I'm sure this is old hat for some of you, but new for me
I tweaked it some with a spacing of .100 between the 15 wind strands. I ended up bringing them together butt up against each other, but noticed no real difference except it now tunes below 500/kHz. I'll probably play around a little with the spacing to see what it does above and below. Anyhow it's no museum piece like some of them I've seen. But it tunes the whole band very well. I stuck it on a lazy-Susan so I can easily turn it for direction. Specs are;
One Philco 37-630 (Philco not required but preferred
)18" x 18"
10-467/pf tuner
24 gauge magnetic wire
15 turns (spacing can vary)
1 turn sense loop spaced 1" below main loop.
Some of you guys should consider trying one, especially if you lack space for a long wire. Fun to build and the performance is really amazing. I'm planning on another I'll slap together this weekend. Working out the specs now. So do any of you fine gents have or have built loops? If so show us what you have. Tell me you most guarded secrets to a well built loop
Note from site admin: Sorry, but the photo which was attached to this post is no longer available.
-Brian
If you collect or are interested in antique telephones, please visit Classic Rotary Phones
http://www.classicrotaryphones.com/forum/index.php
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