I am not so sure that it is applying to that case, but there are GPS antenna cable extenders which converting down the incoming GPS signal to frequencies at which the cable attenuation see here: http://www.microsemi.com/products/timing-synchronization-systems/accessories/government/l1-gps-antenna-down-up-conv
http://www.gigatest.net/symmetricom%20TT&M/GPS%20&%20Time%20Code%20Instrumentation/ds_gps_antenna.pdf
73
KJ6UHN Alex

On 4/30/2015 9:50 AM, Tom Van Baak wrote:
I received this email. Anyone have a good answer?
Thanks,
/tvb

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Someone on ebay advised me to contact your website in hopes that someone in 
your organization can help me with my TrueTime model AL-AK GPS Receiver. I need 
to send it to someone so that they can check it to see if it works and can 
track Satellites.  This receiver has the onboard up/down convertor board that 
changes the receiver input frequency which is set at 4.092 MHz. I don't have 
the needed down converter at the antenna. I bought this receiver on ebay from 
someone who told me that he doesn't have the down converter as well and can't 
figure out how to get it to work at 1575.42 MHz. He also didn't know if this 
receiver can be setup for a 1575.42 MHz by removing the onboard converter and 
changing some DIP switches. If one of your members can at least check out the 
receiver at 4.092 MHz for satellite tracking That would be a big help ...
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