Join Date: Jul 2009
Location: Eastern Ontario (Ottawa/Kingston)
continuing from last post ...
And we see it on some antenna products now - where the antenna driven elements (ex dipole, or loop ends of some sort) terminate right onto a PCB - Printed Circuit Board - where the pre-amp circuitry is.
But Gerry, your pre-amp is a very low noise type - and probably much better than the ones in the average antenna / pre-amp combo out there.
Plus your pre-amp, that I saw, is very very small, and you actually mounted it inside what looked like a short piece of AL square tube. (size?)
That AL square tube you used as an enclosure, looks alot like material used for antenna booms - like for long yagi antennas.
So I imagine an antenna, with one of your pre-amps actually mounted inside the boom of the antenna (!) With short leads from the antenna driven element (ex. yagi dipole) entering the sides or bottom of the boom through 2 small holes, grommets or insulators around the conductors, straight to the pre-amp.
And the F-connector output comes out a hole at the bottom of the boom, a little further back.
(alternately, your pre-amp just attaches below the boom, in a suitable sheilded enclosure like you have - and the dipole ends connect straight to it somehow. I've seen antennas designed with a plastic box enclosure right near the driven element - except usually that is just a connection box or matching network inside there.)
Care must be taken to maintain a "MATCH", same characteristic impeadance, all the way along, right to the input of the pre-amp device.