3 band mobile antenna, 10m full size wave/4 whip, quick tilt-down system for 20 and 15 m loading coil change, lower losses and better efficiency than conventional base-loaded car ant

With an appropriate switch, this antenna allows 3-band full duplex operation on the 2 meter and 6 meter and 10m or 12m / 15m / 17m / 20m bands

Altezza complessiva compreso supporto di base di 8,6 metri, adattatore di impedenza alla base, 5 radialini alla base di 50 cm, 4 elementi telescopici

Inserire l'induttanza di raccorciamento a metà, o meglio oltre la metà,alla base l'induttanza è minore, la corrente è molto elevata e per ridurre le perdite c'è da usare filo molto grosso

The wooden slat constitutes the boom, you have to drill holes 3 mm in diameter for the passage of the elements

Con stilidiversi e diverse combinazioni ,ho la copertura dalle HF alle UHF

This is a base-loaded vertical antenna that mounts on the car's roof, the loading coil is designed as a variable inductor

Been built and written about many times in many different configurations, this just happens to be the way I built min

An hf/vhf portable dipole antenna system which is designed to be modular, versatile, and efficient

If you are operating below 21 MHz,it is all but impossible to run a full-sized mobile antenna, so some sort of loading coil will be needed

>This mobile antenna is designed for all HF bands from 10 to 80 meters

HF Mobile Installation BMWX5

Una canna da pesca lunga m.4,5 è stata utilizzata in 20 e 40 m

Corporate headquarters for hi-q antennas and hi-q military antennas are in anchorage Alaska

At the moment, i own a cody man lifter kite with a wingspan of 2.5 m. i build myself an earth net as a counterpoise and use the kite as a skyhook to lift a 42m 137.8 ft

Adapt the dimensions according to the dimensions of the boat respecting the basic lengths 1/2 lambda

The q-mac ml-90 vehicle roofrack magnetic loop antenna is a technological breakthrough in vehicle-based hf radio

Optimum form length to diameter and turns spacing of any inductor depends heavily on the end-use of the inductor

It's just under 3mtrs long, it is mounted on the roof of the car on a cross member bolted to the luggage rails

The concept is to make the antenna self supporting and able to be broken down into small pieces for easy transport

Homebrew multi-band portable vertical antenna

I had on hand only copper round 6mm in diameter, for use in mobile, aluminum of + / - 5mm would be better suited by its lightness

Multiband no trap no gap antenna, this antenna is a small wonder, easy to build and allow you to work all hf spectrum with your trx and it's internal atu

The coil is 20 turns, #12 solid, 1 & 1/4 inch I.D. closet hanger dowel works great spread to 5' long, thats 4 turns per inch

Quale supporto utilizzare se non si conosce la natura del terreno, la località, il posto dove operare?

On 40 meters from Seaside Oregon and was suitably impressed for a temporary install

A 5 element 2 Metre beam with a forward gain of 8dBD and a front to back ratio of over 24dB

Verticale, per uso portatile con radiatore spiralato per la banda dei 17 metri e sua rapida trasformazione per la banda dei 20 - 30 e 40 metri