Hello, The question: What is the maximum voltage I can put into the antenna bias connection?
The possible mod or configuration jumper: I have a WR-LNA-3500 preamplifier that can be powered by coax or a coaxial power connector. There is a diode to prevent backfeeding power through the receiver port if the coaxial power connector is used. There is no shunt resistor to prevent diode leakage current from building up a voltage on the receiver port. I measure 13.2 volts on my high impedance DVM at the receiver port with the preamplifier powered. In looking at the schematic of the DBSRX I noticed there is no real DC path to ground when DC Bias is not used. Would there be any problem to either jumper the DC Bias connector when not used or to add a high value shunt resistor across the DC Bias connector to keep any DC levels down? I assume the choke will keep most of the RF on the proper side. 73 Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
