ron ward

what is used for the antenna tube on a typical water application of a 75 or 72 Hertz radio and how much antenna do I need to have in the tube for good reception ? I know at one time, years ago, when I worked in a hobby shop, I remember seeing an antenna sold for boats, but I don't see them around any more. I assume people are simply putting their antenna in a small tube that supports the wire vertically ?.
I there a tube you can purchase, or is there an actual "whip antenna" made for the purpose ?

flyinwalenda

My Feedback: (5)

Keep as much antenna as possible out of the hull and above the waterline. Try using a antenna fitting and nut (or a piece of brass tube glued in) mounted on the deck with the tube and cap to keep things watertight. Feed the wire through, let a little dangle outside the tube and cover it with the cap.

http://www3.towerhobbies.com/cgi-bin/wti0001p?&I=LXJH35

ron ward

that's what I needed to find out,....thanks !.

crispyspa

Never fold over the end of an antenna wire. It decreases the range. Put a small hole in the cap instead and thread the antenna wire through. use a tiny dab of silicone on the outside of the cap to keep it in place.

ron ward

yes, rules for that are pretty much the same a for planes....... i'm relatively new to rc boats, but not to rc. there is absolutely no-one in a 50or 60 mile radius around me, that runs a boat, so there's very little equipment in the shops to look at and even less resource of answers for related questions about boats in my area.

Got RPM

Folding the end of a long 75 MHz antenna does no harm, the entire covered wire is the antenna. This is NOT the case with the 2.4 gig radios, only the last inch or so is the antenna, the rest is just coax wire. It must not be folded over and is best kept inside the antenna tube to keep it dry.


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