news.newsreader.com wrote in message
...
Thanks,
Except for a few scanners in the thousand dollar range most scanners top
out
at 1.3ghz to 1.5ghz. I find it hard to believe that I am the only one
looking for a downconventer in the 2.4ghz range. A google search yields
very
little. There are so many cheap devices using 2.4ghz, why is it so hard for
someone to develop a cheap 2.4 downconverter?
Tom
"Steve Uhrig" wrote in message
.. .
On Sun, 16 Nov 2003 19:51:55 -0500, "news.newsreader.com" t wrote:
Is there a downconverter for 2.4ghz. I have a ratshack 2005 with
optoscan456. I would like to explore the 2.4ghz band.
Yes, but they're test equipment accessories, and expensive.
Look at www.avcomofva.com under Analyzer Accessories.
They will downconvert the specified frequencies to 1-1000 megacycles
as covered by their PSA-65C spectrum analyzer. Will work with
anything, but you would have to add your own 12VDC. Whatever modes
your receiver can demodulate will be the same.
Do a Google search on the part number for sources to buy. Prices seem
to be fixed, and Avcom doesn't sell direct.
Sensitivity is pretty good on the things.
From Bob Seydler, K5GNA:
I now have brand new, modified TranSystem AIDC 3731 downconverters that have
been retuned on a NF meter to have a noise figure of better than 1.1 dB and
a
passband of about 2400 - 2586 MHZ. The image rejection has been measured at
better than 50 dB. They only come with an N adapter and the length has been
cut down, so do not have the mounting area in the rear to mount in the focus
of a dish like the 3733's will. They are smaller and are made to mount
directly on an N connector.
The total bandwidth is wider than my modified 3733's with the Murata filter,
being about 186 MHZ instead of 85 MHZ. But, the front end combline filter
at
the antenna is much narrower than the 3733's and will provide some better
isolation from your uplink transmitter.
I am selling them ready to go for $70.00 each with the 123 MHZ output. You
can order them directly from me -- PLEASE CONTACT ME AT
. I
have them listed on Ebay for easy viewing. You can see the picture and get
a
better description -- here is the URL:
http://cgi6.ebay.com/aw-cgi/eBayISAP...wListedItems&;
userid=k5gna&include=0&since=-1&sort=3&rows=25
Thanks,
Bob Seydler
K5GNA
also take a look at:
http://www.ultimatecharger.com/Dish_...d_Preamps.html
http://www.ultimatecharger.com/Dish_AO-40.html
http://www.uk.amsat.org/ListArchives.../msg14713.html