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I’m Giuseppe Morlè from central Italy, Formia on the Tyrrhenian Sea…
My Cassette Loop experiment this time shows how induction takes place on short waves after medium waves.
I used a smaller box as the primary antenna which, however, is pushed by the secondary one due to the induction effect generated between the two windings brought closer together.
This way, the larger loop “captures” more of the signal and sends it to the smaller cassette…
I really like working on induction… I hope you like it:
I’m Giuseppe Morlè from Formia on the Tyrrhenian Sea…
I wanted to share this experiment of mine with all of you by tuning the medium waves with two separate loop cassettes and each for itself by exploiting the principle of induction between two conductors placed next to each other.
I superimposed one cassette on the other by matching the windings of the medium waves–each variable works only for its own box.
I’m tuning the Algerian JIL FM station on 531 kHz with the Tecsun H-501X connected to the box below…then, passing to the top box, the one without any physical contact with the receiver, I tuned this station again centering it perfectly thanks to the induction that creates between the two close windings.
My video will clarify any doubts and I would like to receive your comments about it.
My constructions are the result of continuous recycling and spending very little to get a good yield.
This is Giuseppe Morlè. As always, I try recycling what I have and improving upon antennas I’ve built in the past. This is one way we radio lovers can experiment. Many years ago, I made an antenna only for medium waves; by adding a circuit, I can now listen to short waves.
I took advantage of a small frame that I recovered from an old commercial FM / AM stereo receiver by removing its coils for medium waves and I wound around it only two coils sufficient to have a frequency range from 3.5 to 18 MHz.
I remember that the antenna in question also receives medium waves as it was born.
I chose this small frame because I wanted everything to be small in order to carry this compact antenna everywhere.
Unlike my other projects for SW and MW, which have a cable that carries the SW signal to the receiver, this time I used the induction that is created around one end of the loop, which I spiraled to get inside the stylus of my Tecsun PL-660 and which then transfers the signal to the receiver.
I did some tests on my balcony the day after a strong storm and I noticed that the propagation was absent but I still wanted to make sure that everything was working.
I will keep you updated on other tests on more favorable days of propagation … I still invite you to follow me on my Youtube channel.
I wish everyone a good listening …
73. Giuseppe Morlè iz0gzw.
Many thanks, Giuseppe. I, for one, love all of your homebrewed and recycled antennas. This one is no exception! What a fun project. I love how you use what you have and aren’t afraid to experiment! Thank you for sharing.
I tuned the 7,390 kHz frequency of Radio New Zealand at 14:10 UTC on November 16 on the 4 receivers. I used the narrow and wide filter on each receiver.
I state that a storm was in progress in the area, the afternoon signal was very discontinuous with a difference on the 3 different antennas.
Surprising the result of the internal cross loops which I use a lot when there are thunderstorms in the area to listen to anyway; their behavior is definitely very good despite being inside my shack.
The Mini Whip is excellent on long and medium waves but gets worse above 7 MHz. In fact I only use this antenna for medium and long waves.
A good signal also from the external naval vertical of 8 meters with a “soft” listening on the Yaesu FRG-8800.
Judge dear friends your comments are welcome!
I wanted to compare these 4 “glories” that have accompanied most of my life and that I still consider excellent.
Attached the link tot he video on my Youtube channel:
I wish everyone a good listening …
73. Giuseppe Morlè iz0gzw.
Thank you so much for sharing this, Giuseppe! We love your videos and demonstrations especially since they so often involve antennas that you have home brewed. Your cross loop antenna is truly amazing!
I’m Giuseppe Morlè from Formia, central Italy on the Tyrrhenian Sea.
This time I want to show you 2 QRP connections made with minimal antenna over long distance and very few watts of power…
The antenna is a simple dipole, 5 meters per arm, 1/4 wave for 20 meters, on a bnc / banana socket directly on the Icom 705. You’ll see that the ROS is really optimal.
I wanted to experience this very simple antenna, easy to prepare in this location surrounded by greenery, Monte Orlando Park in Gaeta on my favorite DX bench;
this location is at 120 meters above sea level and facing south / west following the long path. A suitable place for the extreme right made especially for a receiver like the Icom 705– fantastic modulation and without any kind of noise.
In the first video the contact with VK2GJC, Greg from Australia who struggles a little to listen to me but immediately understands my name. As you can hear Greg’s voice is without any imperfection even if his signal is not that high:
In the second video, another link with Australia, VK5AVB, Tony from Kangaroo Island.
Tony had a hard time understanding my name but with the help of Nicola, IU5EYV from Tuscany, in pure Ham Spirit, he finally managed to log me:
As you can see, even with very minimal antennas hoisted on nearby trees, not even high from the ground, you can listen and contact over long distances … that’s why I love this place so much!
Thanks to you all, a cordial greeting from Italy.
Many thanks, once again, Giuseppe for showing us just how much fun we can have by building our own antennas and hopping on the air with very little power. I must say: you certainly play radio in a beautiful part of the world! Thank you!
I’m Giuseppe Morlè from Formia, central Italy on the Tyrrhenian Sea.
I want to share with you my latest ferrite antenna for listening; it is composed of 3 ferrites of 20 cm each in a tube for electrical systems with 2 separate windings, one for medium waves and one for short waves, 40 turns for medium waves, 4 turns for short waves. I use a 750 pf variable to tune the 2 windings and a switch is used to eliminate a winding. Since there is only one variable, if you listen to the medium waves I interrupt the winding of the shorts.
On shortwaves it is preferable to place the system on an iron railing which, due to inductive effect, behaves like a really long wire antenna.
For the mediumwaves it is enough to bring the receiver close to the ferrites and also in this case, the induction will have its effect with an excellent increase in signal and modulation.
This is Giuseppe Morlè, IZ0GZW, from Formia, central Italy on the Tyrrhenian Sea.
I went back to listening with my Kenwood R1000 and indoor homemade cross loops …this time a station in Kuwait, 9k2yd Younes on general call.
I used the 2 loops together and in the last part only the one in the East / West direction and I did not notice any changes. Very strong signals and good evening propagation at 18.00 utc today, 04 June 2022.
Note the absence of electrical noise; the S Meter remains at zero in the absence of modulation and signal.
I am always amazed at my indoor cross loops for the reception quality and they have become the main antenna of my Kenwood R1000.
Giuseppe I hope you enjoy the video
Greeting to all of you from central Italy.
Many thanks to SWLing Post contributor, Giuseppe Morlè (IZ0GZW), who writes:
