Need Help With GPS Antenna Cable

I want a GPS for our server room and I'm having problems with the cable for
the GPS antenna.

I want to connect a Garmin Placer GPS to a Garmin Bullet antenna which will
be roof mounted in a single story commercial building. The antenna is
using F-Style connectors, so that part was easy enough.

The GPS unit itself is SMA. So far the only way I have been able to cable
this up is an SMA compression style connector to TNC, then TNC to BNC, then
BNC to F Style. I'm using RG-6 rated to 3 GHz for the cable.

I'm worried about all of these connectors introducing too much db loss. I
have a loss budget of only 10 db for the cable. Does someone make a
connector that would adapt the RG-6 more quickly to the SMA I have on the
Garmin?

What are the likely accumulated losses for the connectors I describe above
if the signal is running around 1.7 GHz? What is the maximum cable length
I will be limited to?

--
Will
Internet: westes AT earthbroadcast.com

wrote:


Try looking at

http://www.gothiccomponents.com/basic_pages/interconnect/greenpar/greenpar_prod.html

They do a SMA to BNC or even N-type and you should expect approx 0.1 dB loss per
connection plus the loss in the cable
which would be approx 30 dB per 100 meters see

http://www.accesscomms.com.au/Specs/y8040spec.pdf for full specs on RG6 cable

Hope this helps

Doug

--
Regards
Doug Shore
d o u g@d o u g s h o r e.c o.u k (as usual remove SPACES to E-Mail)

Pasternack Enterprises Inc.
connectors and Adapters of all kinds.....
www.pasternak.com


Bruce in alaska
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