Re: Can wireless reliability be enhanced?

[nobody@xxxxxxxxxxxx (Dave Houston)]

Ramsey Electronics has some printed circuit Yagis that might be useful for
this. They're printed on semi-transparent thin plastic substrate.

I think the TenTec 1001(?) preamp is good from DC-4GHz. Ramsey also has some
wideband preamps.

L. M. Rappaport <nospam@xxxxxxxxxxx> wrote:

>On Tue, 31 Jan 2006 10:33:11 -0800, "Ken Gibson"
><jayel@xxxxxxxxxxxxxxx> wrote (with possible editing):
>
>>I have found wireless communication to be unreliable.  The wireless links
>>for my Davis Vantage Pro weather station, Radio Shack security system and
>>Motorola telephone and intercom are all intermittent.  They are all within
>>the specified range and have no metal to shield the communication.  I'm not
>>surprised by the Radio Shack wireless link because it is inexpensive.  I
>>plan to replace the Davis wireless link with a wire if possible.
>
>While it won't help initially, I share the same problem with the
>Davis.  I have two of them - a Davis VP and a Davis VP Pro 2.  Both
>operate in the 900 mhz band, the "2" uses spread spectrum.  Both use
>simple portable radio type antennae.  It will be extremely difficult
>to replace the radios with a wire connection as they are in separate
>buildings and the conduit connecting them is almost impossible to
>access.
>
>Both Davis units were intermittent.  The "2" was rock solid until
>yesterday, then the connection was broken and the console said there
>was no received signal.  Using the console's troubleshooter indicated
>no signal at all.  Last night, it started working again.  Legally, as
>Dave said, you can replace the console's receiving antenna with
>something directional - a small yagi should do the job.  as well as a
>small dish, such as one left over from a Direct TV or Dish Network.
>You would need to change the feedhorn, but not the positioning since
>that is the focal point.  I may try to do this - if it works, you are
>welcome to copy it.  If there exists a decent 900 mhz preamp and
>assembly, I hope I'll find one and report back here.