Sekuzvivaraidza, redhiyo yeamateur yagara ichikurudzirwa kuti uedze chero chinhu chaungave nacho. [Tom Essenpreis] paakada kushandisa antenna yake ye14 MHz kunze kwedhizaini yake frequency renji, aiziva kuti aida dhizaini inoenderana nedunhu. Rudzi runonyanya kuzivikanwa ndeye L-Match circuit, iyo inoshandisa variable capacitors uye variable inductors kugadzirisa inoshandiswa frequency range (resonance) yeantenna. Kunyangwe zvisingaite mune mamwe magadzirirwo chaiwo, ivo vakanaka pakuvhara mukaha pakati peiyo 50 ohm impedance yeredhiyo uye kusazivikanwa kusingazivikanwe kweantenna.
Pasina kupokana, [Tom] aitsvaga zvikamu mugaba rake remarara, achishandisa ferrite tsvimbo, hot glue, waya yemagineti, tepi yemhangura uye mamwe majekiseni e60 ml eredhiyo yeAM kuti aunganidze macapacitor nemainductors. Pamwe chete. Iwe unogona kumuona achikuya kubva pakati peplunger kuti awane nzvimbo yedanda referrite. Putira kunze kwesirinji newaya yemagetsi, kurongeka kweferrite kunogona kugadziridzwa neplunger, uye hunhu hwezvikamu zvinogona kushandurwa kugadzirisa dunhu. [Tom] akataura kuti akakwanisa kushandisa tuner yake ichangobva kugadzirwa kutenderera, uye tine chokwadi chekuti anofarira kushandisa midziyo yake yakavandudzwa.
Kana iwe usingade redhiyo yeamateur, saka pamwe tinogona kukukwezva neiyi sirinji-based roketi, sirinji-inofambiswa ne3D yakadhindwa muchina wekudhinda, kana vacuum-inotyairwa nesirinji. Iwe une yako hacker yekugovera? Chero zvazvingava, zvipe kune mutsara wekukurumidza!
Ini handisi HAM uye ini handizive zvakawanda nezveHF, asi ndinoziva kuti mune mamwe ma frequency mabhendi, iyo TX simba rinogona kunge rakakura, saka voltage pane antenna ichave yakakura. Chingave chinhu chakanaka here kuisa iyo isiri-conductive yepurasitiki chubhu yakazadzwa nemhepo pakati peantenna tuner uye mudziyo wekudzora?
Akataura dzimwe nyaya pamusoro pekushaya basa, iro harisi dambudziko. Ndinoyeuka mubhuku rakanyorwa naDoug Demaw raakataura kuti ferrites anozopedzisira aita semhepo pamhepo.
Ndakashandisa tsvimbo yakadai yeferrite mu80m fox transmitter (3.5MHz). Kuenzaniswa nemusanganiswa weferrite weakakodzera frequency, kurasikirwa kuri muhuwandu hwe5 dB.
Chii chisinganzwisisike ichi American electromagnetic waya yandinoona paInternet, uye inei chekuita nemagineti? Yakagadzirwa nesimbi here?
Magnet waya iwaya yemhangura ine nhete inodzivirira enameled layer. Ini ndinofungidzira yakatumidzwa neiyi nzira nekuti inowanzo shandiswa kugadzira magetsi emagetsi coils, kureva, emota windings/speaker voice coils/solenoids/ winding inductors/etc.
Kana kuti, kana usina jekiseni, imwe corflute/coroplast zvinhu inogona kushandiswa seyaimbova coil uye ferrite inopinda mairi. Kuti uwane rumwe ruzivo, ndapota ona: https://www.youtube.com/watch?v=NyKu0qKVA1I
Nekushandisa webhusaiti yedu uye masevhisi, unobvumirana pachena nekuiswa kwekuita kwedu, kushanda uye kushambadza makuki. dzidza zvimwe
Nguva yekutumira: Zvita-10-2021
