I read a post where someone who suspected they were very convinced that they had some spy device recording and possibly transmitting frequencies within the home (the experience was 4-5 years of consistent happenings that never replicated when they frequently travelled, so I was somewhat convinced they were experiencing something).
A responder told this person that they needed to make a coil of wire (single strand, didn't say gauge, but i'm guessing 18-24) by placing 100 nails or tacks in a row with spacing of 5-10mm between each - so a total of 50-100cm (12.5 - 25 inches) and another row 5 ft across from the first with the same tacks/nails and same spacing. They were then to take a wire and run it in a zig-zag, back and forth starting at the tack 1 on side A then to tack 1 on side B, loop back around to tack 2 on side A the to tack 2 on side B and repeat until the end. After this run a wire from the beginning of tack 1/side A, and also connect a wire to the last tack (100, side B) and run these leads to a audio amplifier speaker output.
So this wire "coil" is 1,000ft (maybe a little longer by a couple ft). He was then instructed to play music through the device turned up all the way. 9unless it was a high end stereo of like 100-150 watts RMS, but he said 20-40 watts RMS was fine and would generate constant noise in any recording device in the house.
Now from what I understand, the amplifier boosts whatever signal the source is, and being music it is almost always 20-20,000 Hz, so I would suspect this loop would generate frequencies in that range as well. IDK if there would be harmonics generated as well which may get up in the megahertz range, but I would suspect for them to get any where near the 80MHz as the 15th harmonic of 20KHz would only be 320KHz and at the 15th harmonic I would think it would have lost most of it's power not to mention the music would vary so much the frequencies would be all over.
So, is there anything to this idea or was the poster just being trolled? I was thinking that the size of the wire would be important, especially when wattage of the amp is taken into consideration as it would heat the wire. Most speakers are 4 or 8 ohm, with 8 being more usual.
All are AWG standards diameter
gauge: 24g - Length: 1000ft - diameter: .511mm - cross sectional area: .205mm^2 - resistance: 25.6 ohms
gauge: 22g - Length: 1000ft - diameter: .644mm - cross sectional area:.326mm^2 - resistance: 16.14 ohms
gauge: 20g - Length: 1000ft - diameter: .812mm- cross sectional area: .518mm^2 - resistance: 10.15 ohms
gauge: 18g - Length: 1000ft - diameter: 1.024mm - cross sectional area: .823mm^2 - resistance: 6.39 ohms
15g = 3.184 ohms (8 strands of 24 gauge which could be gotten from a single cat5 cable with the wires run in parallel/twisted together at the ends)
17g = 5.064 ohms (8 strands of 26g cat5 cable run in parallel)
A responder told this person that they needed to make a coil of wire (single strand, didn't say gauge, but i'm guessing 18-24) by placing 100 nails or tacks in a row with spacing of 5-10mm between each - so a total of 50-100cm (12.5 - 25 inches) and another row 5 ft across from the first with the same tacks/nails and same spacing. They were then to take a wire and run it in a zig-zag, back and forth starting at the tack 1 on side A then to tack 1 on side B, loop back around to tack 2 on side A the to tack 2 on side B and repeat until the end. After this run a wire from the beginning of tack 1/side A, and also connect a wire to the last tack (100, side B) and run these leads to a audio amplifier speaker output.
So this wire "coil" is 1,000ft (maybe a little longer by a couple ft). He was then instructed to play music through the device turned up all the way. 9unless it was a high end stereo of like 100-150 watts RMS, but he said 20-40 watts RMS was fine and would generate constant noise in any recording device in the house.
Now from what I understand, the amplifier boosts whatever signal the source is, and being music it is almost always 20-20,000 Hz, so I would suspect this loop would generate frequencies in that range as well. IDK if there would be harmonics generated as well which may get up in the megahertz range, but I would suspect for them to get any where near the 80MHz as the 15th harmonic of 20KHz would only be 320KHz and at the 15th harmonic I would think it would have lost most of it's power not to mention the music would vary so much the frequencies would be all over.
So, is there anything to this idea or was the poster just being trolled? I was thinking that the size of the wire would be important, especially when wattage of the amp is taken into consideration as it would heat the wire. Most speakers are 4 or 8 ohm, with 8 being more usual.
All are AWG standards diameter
gauge: 24g - Length: 1000ft - diameter: .511mm - cross sectional area: .205mm^2 - resistance: 25.6 ohms
gauge: 22g - Length: 1000ft - diameter: .644mm - cross sectional area:.326mm^2 - resistance: 16.14 ohms
gauge: 20g - Length: 1000ft - diameter: .812mm- cross sectional area: .518mm^2 - resistance: 10.15 ohms
gauge: 18g - Length: 1000ft - diameter: 1.024mm - cross sectional area: .823mm^2 - resistance: 6.39 ohms
15g = 3.184 ohms (8 strands of 24 gauge which could be gotten from a single cat5 cable with the wires run in parallel/twisted together at the ends)
17g = 5.064 ohms (8 strands of 26g cat5 cable run in parallel)
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