At 3/9/2009 21:20, you wrote: >Longest distance is .69 km with an obstruction at .27 km from the repeater. > >RX sensitivity on both the repeater and the mobile units is set at 1.0 uV. > >Repeater TX set at 250 mW, 3 dB antenna/feedline/cavity loss, 6 dBi >antenna. Mobile unit TX set at 500 mW, -2 dBi antenna, zero feedline loss. > >On the longest hop, link is calculating 15.4709 uV at the mobile station, >21.8792 uV at the repeater station. > >Am I too far off base here?
Looks good to me. As far as current draw sans RFPA, I've never measured an MVP (similar radio) in that config., but mine draws 0.27 A with the TX unkeyed. I would expect the exciter alone to draw no more than 150 mA @ 10 V (1.5 watts in, 250 mW out). So figure 0.4 to 0.5 A total. You might be able to get that number down if you cut power to the audio PA, as I believe that draws a significant amount of quiescent current. Bob NO6B
