My two problems have been resolved. I received no reply from ACC but I received several replies from Repeater Builder. So life is good!
Regarding the sense of the COS on a link receiver, I built a simple circuit (suggested by W5ZIT) that reverses the sense. After doing that, I stumbled upon the fact that a simple command will accomplish what I needed to do. Such is life. Regarding the audio output level, I built a simple audio amplifier that boosted the signal from about 660 mv to 2 volts, well within the 1 to 5 volts recommended by ACC. So remember, you don't have to build a circuit to reverse the sense of COS with the RC-850 controller. John AF4PD >-----Original Message----- >From: acc-controll...@yahoogroups.com [mailto:ACC- >controll...@yahoogroups.com] On Behalf Of John Transue >Sent: Saturday, July 11, 2009 1:24 PM >To: acc-controll...@yahoogroups.com >Subject: [ACC-Controllers] Mixing active high and active low > >I have an RC-850 controller with a repeater that uses ACTIVE HIGH >COS. >I want to add a link receiver that uses ACTIVE LOW COS. I have >studied >the -850 hardware manual and operation manual and programmer's >manual, >and I have not found a way to do this. That is, on page Appendix I - >6 >of the Hardware Reference Manual there is a table that shows the dip >switch positions for choosing the sense of the repeater receiver COS >and the control receiver COS but it does not mention any way to >select >the sense of a link receiver COS. Does anyone know how to do this? >And >if there can not be a selection of the sense, does anyone know what >sense is built into the -850? > >Your help will be much appreciated. It is difficult to go to the >repeater site to measure the COS sense that the 850 expects. > >John > > >[Non-text portions of this message have been removed] > > > >------------------------------------ > >Yahoo! Groups Links > > > > > >__________ NOD32 4234 (20090711) Information __________ > >This message was checked by NOD32 antivirus system. >http://www.eset.com
