Re: Can wireless reliability be enhanced?

[nobody@xxxxxxxxxxxx (Dave Houston)]

They're printed on FR-4. Search Ramsey's site on "antenna". Here's the
915MHz Yagi and preamp...


http://www.ramseyelectronics.com/cgi-bin/commerce.exe?preadd=action&key=LPY915

http://www.ramseyelectronics.com/cgi-bin/commerce.exe?preadd=action&key=SA7


nobody@xxxxxxxxxxxx (Dave Houston) wrote:

>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.