Chris wrote:
1) I read the Thunderbolt user manual and did not find any meaningful spec on the antenna except that it is amplified and uses DC power in the coax. What signal level is the Thunderbolt expecting? oes it want a 24dB antenna or more or much less?
The antenna Trimble specifies has 35 dB of gain. Tbolts work with 26 dB antennas, but like 35 better.
2) I want to feed two GPS units with one roof mounted antenna. I figure that splitters are just a transformers and will not pass DC to power the antenna. There must be an easy way around this.
HP and Symmetricom supply 2- and 4-way splitters specifically for GPS applications (see, for example, the Symmetricom 58535A at http://www.symmetricom.com/media/files/support/productmanual/097-58535-01-iss-1.pdf). They typically have low-gain amplifiers and pass DC to the antenna. Readily available on eBay and (at least in the past) from a listmember at attractive prices.
Best regards, Charles _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
