TrueTime Symmetricom GPS Antenna 140-615 Downconverter Datum 140-6150 Outdoor
( 363013099966) )
New/Unused • GPS Antenna with Downconverter • Part Number 140-615 • TNC Connector • Antenna Assembly Match For 140-6150 Upconverter
Here's an unused GPS antenna that contains an integrated downconverter module which allows it to be used over very long cable runs. It will not work without the corresponding upconverter circuitry at the receiver end [not included].
The matching upconverter (140-6150 is listed separately). It will not work if connected to standard GPS receiver that is not expecting a down-converted signal.
There have been several different versions of downconverter sold over the years and they are only compatible with their respective matched receivers. This model is not interchangeable therefore with the "bullet" type downconverter that was offered with the XL-AK, XL-DC receivers etc.
An antenna down/up converter is provided when signal losses in the antenna cable limit the distance between the receiver and the antenna assembly. Many applications requiring cable lengths to 1500 feet will benefit from the use of a down/up converter assembly. At just over 250 feet in cable length, the benefits can be realized using a down/up converter assembly versus the use of low loss cable and amplifiers. Signal strengths and noise immunity are the main advantages of using the antenna down/up converter assembly, as well as the cost benefits over the use of low loss cable and amplifiers.
Further information may be obtained from the User Manual (https://www.prostudioconnection.net/0912/142-6150.pdf).