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Amateur Radio

Questions tagged [loop-antenna]

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40 questions
Newest Active Bountied Unanswered
1 vote
2 answers
178 views

I am a network engineer so I have tons of Cat5e cable that I can used as a receive transmission line. I want to experiment with making a K9AY receive antenna using about a 1000 ft. long Car5e ...
Lowell KD8HD's user avatar
  • 43
2 votes
1 answer
208 views

I made a loopstick for my AM radio and I used enameled copper wire of 1 mm (approx) thick to make the loops on a ferrite rod of 1 cm thick and 14 cm long. I made the main loop with the number of turns ...
user avatar
1 vote
1 answer
292 views

I have used my small loop antenna (which has a main loop and a coupling loop that can be tuned using a variable capacitor) with an AM radio receiver to receive MW broadcasts. However, the small loop ...
user avatar
-2 votes
1 answer
124 views

I would like to know, what the size is for loop antenna driven with 12.288 MHz. I researched many pages on internet, but I want to know just the calculation which is being performed. Below a picture ...
user avatar
1 vote
1 answer
339 views

I live 75 miles from one of my favorite station's broadcast tower (91.1 FM), and I would like to get better reception. Currently, I am using a NAD 4150 Tuner with a T style antenna. I ran it out a ...
joshvito's user avatar
  • 111
0 votes
3 answers
187 views

Generally, an antenna tuner is nothing more than an impedance matcher. Badly termed, as it does not tunes any antenna. For loop antennas though this is not the case. The antenna tuner does not do any ...
kellogs's user avatar
  • 327
3 votes
2 answers
292 views

I have a local noise problem that's pretty intractable, especially on low bands. I'd like to at least experiment with a loop-on-ground RX antenna -- I've got a 1/4 acre to play with. My IC-718 has ...
W1WFG's user avatar
  • 33
1 vote
2 answers
136 views

I need to build a MHz antenna that can power an RFID chip that responds to mag field perpendicular to the plane of a loop antenna, e.g, using STL transmitter with a small receiver loop in same plane ...
Tunneller's user avatar
  • 125
2 votes
2 answers
2k views

This antenna has been around for decades and the design is as basic as can be. Somehow the antenna I'd been using, became unwound. The total length of the wire is 4.9ft. I need to know the proper ...
user11471's user avatar
  • 21
2 votes
1 answer
444 views

There is something that I don't get. I read that a small loop antenna (also called magnetic loop) responds more to the magnetic field than a large loop antenna does. I was wondering why this is the ...
kinu's user avatar
  • 91
7 votes
2 answers
602 views

I am learning about loop antennas at the moment. I read that the response of a small loop Antenna is proportional to the rate of change of magnetic flux through the loop which causes a uniform current ...
kinu's user avatar
  • 91
0 votes
2 answers
130 views

I know nothing of ham radios. However, my elderly uncle, who lives next door to me has a ham radio. He has a very tall antenna. He gets a friend of his to string what looks like to me, an "air ...
Laura Tallo's user avatar
  • 1
5 votes
1 answer
781 views

What is the advantage of using Litz wire to wind ferrite (loopstick) antennas? How much of an advantage in what characteristic does this type of wire provide? (over generic single strand enameled or ...
hotpaw2's user avatar
  • 13.7k
4 votes
1 answer
1k views

I had built SM0VPO's spiral loop antenna. And here it is. Recently I got myself a NanoVNA to see how finnicky it is to be tuned with that poor man's tuning cap. I brought it from 12 MHz into the 14 ...
Gunther Schadow's user avatar
  • 415
1 vote
2 answers
805 views

I have a loop antenna. When I connect the probe from my oscilloscope, does the probe also act as an antenna? If so, how should I fix that? I read about feeding technique, but I still do not ...
Ramanda Nvl's user avatar
  • 129

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