nūhou

Ma ke ʻano he leʻaleʻa, ua hoʻoikaika ʻia ka lekiō amateur e hoʻokolohua me nā mea āu e loaʻa ai ma ka lima. I ka manawa i makemake ai ʻo [Tom Essenpreis] e hoʻohana i kāna antenna 14 MHz ma waho o kāna laina alapine hoʻolālā, ʻike ʻo ia he pono ia i kahi kaapuni pili impedance. ʻO ke ʻano maʻamau ka L-Match circuit, e hoʻohana ana i nā capacitors variable a me nā inductors variable e hoʻoponopono i ke alapine hiki ke hoʻohana (resonance) o ka antenna. ʻOiai ʻaʻole kūpono i kekahi mau hoʻonohonoho kikoʻī, maikaʻi lākou i ka hoʻopaʻa ʻana i ke āpau ma waena o ka 50 ohm impedance o ka lekiō a me ka impedance ʻike ʻole o ka antenna.
Me ke kanalua, ua ʻimi ʻo [Tom] i nā ʻāpana o kāna pahu ʻōpala, me ka hoʻohana ʻana i nā koʻokoʻo ferrite, ke kolu wela, ka uwea magnet, ka lipine keleawe a me kekahi mau syringes 60 ml hou mai ka lekiō AM e hōʻuluʻulu i nā capacitors a me nā inductors. Hui pu. Hiki iā ʻoe ke ʻike iā ia e wili i ke kikowaena o ka plunger e hoʻokaʻawale i ke koʻokoʻo ferrite. E uhi i ka waho o ka syringe me ka uwea electromagnetic, hiki ke hoʻoponopono ʻia ka hoʻonohonoho ʻana o ka ferrite e ka plunger, a hiki ke hoʻololi ʻia nā ʻano o nā ʻāpana e hoʻoponopono i ke kaapuni. Ua hōʻike ʻo [Tom] ua hiki iā ia ke hoʻohana i kāna tuner hou i hana ʻia no ka live streaming, a maopopo mākou makemake ʻo ia e hoʻohana i kāna mau mea hana improvised.
Inā ʻaʻole ʻoe makemake i ka lekiō amateur, a laila hiki iā mākou ke hoʻowalewale iā ʻoe me kēia rocket-based syringe, syringe-driven 3D printed drill press, a i ʻole ka pahu pahu pahu pahu. Loaʻa iā ʻoe kāu hacker ponoʻī e kaʻana like? I kēlā me kēia hihia, e hoʻouna iā ia i ka laina wikiwiki!
ʻAʻole wau he HAM a ʻaʻole wau i ʻike nui e pili ana i ka HF, akā ʻike wau aia ma kekahi mau kaha alapine, nui paha ka mana TX, no laila e nui ka uila ma ka antenna. He mea maikaʻi paha ke kau ʻana i kahi paipu plastik non-conductive i hoʻopiha ʻia me ka ea ma waena o ka antenna tuner a me ka mea hoʻokele?
Ua haʻi ʻo ia i kekahi mau pilikia e pili ana i ka hemahema, ʻaʻole ia he pilikia. Ke hoʻomanaʻo nei au i loko o kahi puke a Doug Demaw i ʻōlelo ai ʻo ia e hana like nā ferrites e like me ka ea ma nā alapine kiʻekiʻe.
Ua hoʻohana au i ke koʻokoʻo ferrite i ka 80m fox transmitter (3.5MHz). Ke hoʻohālikelike ʻia me ka hui ferrite o ke alapine kūpono, aia ka poho ma ka laulā o 5 dB.
He aha kēia uea electromagnetic pohihihi o ʻAmelika aʻu e ʻike nei ma ka Pūnaewele, a he aha ka pili ʻana me nā magnets? He kila paha?
ʻO ka uea Magnet he uea keleawe me kahi ʻāpana enamel insulating lahilahi. Manaʻo wau ua kapa ʻia ʻo ia ma kēia ʻano no ka mea maʻamau ka hana ʻana i nā wili electromagnetic, ʻo ia hoʻi, no nā wili kaʻa/nā leo leo haʻiʻōlelo/solenoids/winding inductors/etc.
A i ʻole, inā ʻaʻole ʻoe he syringe, hiki ke hoʻohana ʻia kekahi mea corflute/coroplast ma ke ʻano he coil mua a komo ka ferrite i loko. No nā kikoʻī, e ʻoluʻolu e ʻike: https://www.youtube.com/watch?v=NyKu0qKVA1I
Ma ka hoʻohana ʻana i kā mākou pūnaewele a me nā lawelawe, ʻae maopopo ʻoe i ka waiho ʻana o kā mākou hana, hana a me nā kuki hoʻolaha. aʻo hou aku