AJ wrote: > > > We've been given the opportunity to setup a remote receiver at the end > of local local cable television provider's plant on the hill to help > with coverage. Powering is the only issue we're running in to - > currently the only power available within 6 pole spans is the 90 V AC > plant power across the CATV coax. They've offered to cut in a power > inserter at this location to feed up to 4 amps of 90 VAC to us (roughly > 85 VAC at that point in the plant) - what is out there for a reasonable > cost effective solution to convert this to 12 VDC? > > This stub of plant does not have RF across it, nor will it any time soon > (RF removed when fiber backbone was overlashed on the same pole line). > Our first concern was leakage but that shouldn't be an issue. > > 73, > AJ, K6LOR >
AJ, Although a bit crude, a simple solution that will allow you to use a normal 110VAC to 12VDC power supply is to get a small autotransformer to boost the voltage back to 110VAC. Or you can make your own by wiring a 110VAC/24VAC transformer up as a boost autotransformer (secondary is placed in series with the 85VAC hot side). Ed Yoho W6YJ
