Richard Clark wrote:

On 9 Jun 2005 18:14:14 -0700, wrote:


Hello. I currently use a WSP255RS RCA 900Mhz transmitter
http://tinyurl.com/a6y5e


Hi,

Yes, cute.


to send MP3s to a Sony Spiar Receiver.
http://tinyurl.com/8ayyg


Yes, that's cute too.


The range of the RCA is 300'.


Rather pretty good if you already get this (instead of simply being an
advertising claim).


I would like to know
if there is an easy way to slightly increase the range of transmission.


Hmmm, yes. But there are reasons not to. "Slightly" falls slightly
outside of good specification. Please state specifically what you
need.


Is there a 900Mhz antenna amp or kit available to maximize range?


Undoubtedly, just like the availability of porn, you can buy almost
anything. Is it commercial and could you get it at Circuit City or
Radio Shack? - afraid not. It has to do with that law thingy, and the
FCC (black market answers most of this).


Perhaps something like this little antenna:
http://www.ramseyelectronics.com/cgi...ion&key=LPY915

Plenty of "illicit/illegal" stuff is available,ya just gotta know where
to look,and of course,many times it also depends on how you use such items.
Adding an antenna will probably violate part-15,but I doubt you'll get
any "heat" from doing it.






Would desoldering the flimpsy antenna and putting a thicker/longer
antenna increase range?


Depends on antenna design, which could mean thicker/longer wire, but
thicker/longer wire is not the answer - it depends on antenna design
(probably why you came here).


How about making a better antenna? Something like
http://www.shed.com/tutor/mr26ant.html.


Where the other posts were cute, this is gross. Now, that is not to
mean like vulgar - simply too, too big.

Look at the antennas in the first two links, and compare to this last
one. Even if you made it the right size (and it is in fact the wrong
size); then it wouldn't really bring anything to the table. It does
answer the agenda of antenna design, but it is not an example of what
you describe wanting.

A simple solution for "slightly" more range is to build two corner
reflectors (google search keywords) at each end. Tin foil on
cardboard conception models can answer many questions. Toss in an
additional keyword, 900MHz, and you will probably find enough to work
with.

73's
Richard Clark, KB7QHC