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Re: REFLECTOR: Antenae
Thanks Alan (and others),
I feel much better. I just recieved and am reading all the back issues
and have not finished, so when I got to Dave Black article it had me
I have all the confidence in the wings you provided and the enclosed
antenae. I can't wait to bolt them on. I get so anxcious staring at them
as they lie motionless on the floor of the garage.
Alan Shaw wrote:
> Reeder Graphics, Inc. wrote:
> > I am reading some of the old Velocity Views and am alarmed by the
> > analysis of the antenae included in the prebuilt wings.
> If you put an accurate match efficiency meter on a certified aircraft's
> standard whip antenna you would be even more alarmed.The RST systems di-pole
> is normally twice as good.
> The first five sets of wings we built, almost five years ago, were hampered
> by carbon rudders which we eliminated. My good friend Dave Black was one of
> the lucky owners of these carbon infected com antennas. It just so happens
> that he is in the commercial broadcasting business were they need perfect
> antennas for quality ground to ground communication. An aircraft is much
> different in that our antenna usually has fantastic altitude and commercial
> grade transmission and reception is not mandatory.
> We have done extensive testing with our $1,000 MB-500 SWR meter. The
> results of which showed that by adding 1/2" to RST systems com antenna
> length we achieved a consistent reading across the bandwidth. This
> slightly longer di-pole has similar readings as the great antennas made by
> the knowledgeable Bob Archer ("Sport Craft") according to our in house
> test. We prefer the simpler RST di-pole because of easy installation and
> less chance of delamination.
> The Nav antenna has a yellow band and the Com has a white band. When your
> use a whole saw to drill out the strobe light hole be careful not to drive
> it home all the way into the com cable. After opening this hole tug on the
> cable and you can see which one it is at the other end. A meter connected
> to antenna cable will also respond to your hand passing near the antenna.
> One more note: Any sharp bend, anywhere in the cable, will severely hamper
> the transmission.
> Building an aircraft is challenging and fun because of what we learn in the
> process. Each problem is solved one at a time with no need to become
> "alarmed" by what we learn or read as we go. We just get as much knowledge
> as we can and do our best as we go. Always in the end we look back and
> say,"I could have done better". Details are often very important but on the
> other hand Dan used to say something like: if you sweat the small stuff to
> perfection the project may never get finished. I guess the trick is knowing
> when to sweat and when not too.
> Alan Shaw