Good morning, Emili. An inverted V-dipole will serve you for at most two bands without coils. With coils (traps), you can calculate it for four bands. You have to keep in mind that coils reduce the antenna's efficiency quite a bit and make its bandwidth very narrow. I would advise you to build a G5RV-type antenna if you really want to work in inverted V. However, in your case I would install an off-center fed dipole calculated for the lowest frequency at 3.500 MHz. You'll operate on all bands without the drawback of coils. If you do the math and vary the antenna's height, you'll see that the radiation angle changes with height. At a height of 10 or 12 meters, you get a low radiation angle, which is good for DX. In your case, a high radiation angle (NVIS) might be more suitable.
Let me know if you need anything. 73
Bon dia Emili. Un dipol en V invertida, com a molt, et servira per 2 bandes sense bobines. Amb bobines (trampes) el pots calcular per 4 bandes. Tens de tenir en compte que les bobines treuen bastant rendiment a la antena i la fan molt estreta de banda. JO, t'aconsellaria muntar una antena tipus G5RV si realment vols trteballar en V invertida. Ara be, jo en el teu cas posaria un dipol descentrat calculat per la frequencia mes baixa a 3,500 Mhz. Treballaras a totes les bandes sense el inconvenient de les bobines. Si fas el calcul i varies la alçada de la antena veuras que l'angle de sortida varia amb la alçada. A partir de 10 o 12 mts d'alçada tens un angle de sortida baix que va be per DX. En el teu cas potser interessa mes un angle de sortida alt, NVIS.