Running 1 mile of feedline to the existing antennas?!? :-O ;-> Joe M.
DCFluX wrote: > I'd go with 50 to 100 kHz spacing from the analog channel and use > circulators for the transmitters and a spliter to allow operation > through the existing antenna and duplexer system, Like IBOC. > > On 4/1/08, johnmichaelwelton <[EMAIL PROTECTED]> wrote: >> We are investigating the possibility of adding 2M/440 DSTAR. At the >> university, we currently have the following analog repeaters at ~175 >> ft HAAT (in/out): >> >> 144.850 - 145.450 >> 449.825 - 444.825 >> >> We will have access to the roof of the new hospital (about the same >> HAAT), about 1 mile away and would like to add a separate DSTAR suite >> without interfering with the existing analog site. SERA has 3 freq >> band options for VHF DSTAR for example (in/out): >> >> 144.800 - 145.400 (600 KHz split) >> 146.480 - 145.080 (1.4 MHz split) >> 147.460 - 144.960 (2.5 MHz split) >> >> UHF for DSTAR generally follows the analog band plans, e.g. 442-444 >> out, +5 MHz in and DSTAR pairs are interspaced with the analog pairs, >> e.g. 449.9875 - 444.9875. >> >> Could anyone recommend a strategy to pick new 2M and 440 DSTAR pairs >> that would provide the least interference for the existing analog >> repeaters above. >> >> Thanks >> John/N4SJW >> Charleston, SC >> >> >> >> ------------------------------------ >> >> >> >> Yahoo! Groups Links >> >> >> >> > > ------------------------------------ > > > > Yahoo! Groups Links > > > > >
