At 2/27/2010 09:56 AM, you wrote: >I have been following the 9.6 Volt Micor Voltage information. One post >indicated that if one were to replace the Stock MICOR Supply with a >switcher and add the 9.6 Volt circuit, the monthly electric bill to run >the repeater could be significantly reduced. Is this due to the fact that >the switcher, in the standby mode, draws much less current and therefore >cost less to operate or is it this combined with efficiently when the >repeater is in operation. I have stock MICOR and MASTR II Supplies and >would like your expertise on the merits of replacing them with one large >switcher or a couple switchers. As always thanks in advance for your input >and sharing your experiences with us.
A local multi-band repeater system is having IMD problems, & requested a CTCSS change to resolve one of them. After describing the "sound" of the low-level (~-70 dBc) spurs I'm seeing a few hundred kHz either side of the 440 output of the system, the owner told me that the IMD hitting his other inputs sounded the same. I asked if he was using a switching supply to power the system & he said yes. I recommended that he replace it with a linear supply; I suspect that will solve all of his IMD problems. Will let you know... Bob NO6B
