Balun 6m

Ja bym w ogóle nie stosował rdzenia. Jeśli przyjąć że impedancja baluna powinna być >10x większa niż linii to wychodzi 500 omów. Podstawiając pod matematykę cewka powinna mieć 2uH lub więcej. 10 zwojów kabla z odstępem 15mm na wodkanie 100mm średnicy da ci 3uH Polecam ten kalkulator, jest bardzo dobry QOIL™ — https://hamwaves.com/qoil/ — v20181217 Coil design 2020-07-18 19:26 INPUT mean diameter of the coil D = 100 mm number of turns N = 5 length of the coil ℓ, = 80 mm wire or tubing diameter d = 5 mm design frequency f = 50 MHz The (plating) material is annealed copper. INTERMEDIATE RESULTS winding pitch p = 16.00 mm physical conductor length ℓ,_w_phys = 1572.8 mm effective pitch angle ψ, = 2.93° RESULTS Effective equivalent circuit effective series inductance @ design frequency L_eff_s = 3.421 μ,H effective series reactance @ design frequency X_eff_s = 1074.8 Ω, effective series AC resistance @ design frequency R_eff_s = 0.186 Ω, effective unloaded quality factor @ design frequency Q_eff = 5791 Lumped circuit equivalent f-independent series inductance, geometrical formula L_s = 2.072 μ,H series AC resistance @ design frequency R_s = 0.068 Ω, parallel stray capacitance @ design frequency C_p = 1.9 pF Self-resonant frequency f_res = 60.342 MHz

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