[time-nuts] Monitoring the Rapco 1804M - how antenna changes affect the unit

Joe Leikhim JLeikhim at Leikhim.com
Wed Nov 2 14:51:40 EDT 2011


I tried a similar Garmin antenna with my Datum ET6000 and the lock times 
were really long, even with the antenna on a 14 foot pole above the 
roof.  I attribute a lot of this to the long 8 ft RG174 style coax 
pigtail. I have to wonder if the gain of the preamp as published 
actually includes the inherent cable loss, and even if so the preamp 
must be screaming in gain to make up for the loss. I intend to get a 
proper antenna.

Here is a comparison of specs of these type antennas:

http://gpsinformation.net/main/gpsantrev1.htm

-- 
Joe Leikhim

Leikhim and Associates
Communications Consultants
Oviedo, Florida

www.Leikhim.com

JLeikhim at Leikhim.com

407-982-0446
WWW.LEIKHIM.COM





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