Hello LF, this evening I had some free time to spend for starting my very simple tests with ferrite rods. Picture 1 in the attached zip file shows one of the rods (about 10mm diameter x 200mm long)
Hello Daniele, Nice work and good equipment. I would suggest to make the wires between coil and cap as short as possible and not to use these crocodile clamps. HF litz wire should help about the Q bu
Hello Jim, thanks a lot for your helpful advice. However, as I'm short with free time (because of job & family duties :-)), I'm afraid I will have to stay with current build, that is three stacked 10
HI Daniele This is my great ferrite rood RX antenna with aluminium shield: http://lea.hamradio.si/~s52ab/ndb_equipment/slides/great_fer_rood.html Good worked. Regards 73, Joze s52ab -- Original Messa
Hi Daniele, Am 27.09.2011 17:15, schrieb Daniele Tincani: Hello Stefan, is reduced by the aluminium shield! Do you think the aluminium could be the problem or the distance between the coil and the co
Hi Joze, looks like in your antenna the coil is wound over the shield, am I correct? Regards Daniele Da: Joze Konda - S52AB <[email protected]> A: [email protected] Inviato: Martedì 27 Settem
Hi Daniele, I agree with Wolf's comments. Another thing: If you add a (switched) cap of the same C value, you will come down to the LF radio band and to the amateur band too. I took styroflex caps in
Hi Daniele, Looking at those alligator clips: Did you ever remove the rubber insulation, and check the connection between clip and cable, and check the 'copper diameter' of these cables ? I did, and
Hello Stefan, this morning I received the litz wire and tried another build, using a 16 mm PVC tube to enclose the 3 x ferrite rods. I wound 70 turns of litz (as good as I could) and went to the test
Hi Daniele, I agree with Wolf's comments. Another thing: If you add a (switched) cap of the same C value, you will come down to the LF radio band and to the amateur band too. I took styroflex caps i
Hi Daniele, Looking at those alligator clips: Did you ever remove the rubber insulation, and check the connection between clip and cable, and check the 'copper diameter' of these cables ? I did, and
Dear Daniele, LF Group, I would agree with others that the presence of the screen is reducing the Q in your ferrite rod. One must also be cautious about the possible effects of interconnecting wires,
Hello Stefan, Do you think the aluminium could be the problem or the distance between the coil and the core? I could replace the aluminium tube with a plastic tube, if shielding is not necessary, but
