Cool. Those look like Home Depot ethernet jacks you're using to attach to the pigtails. How are they working out for you?
Greg On Mar 16, 2010, at 5:31 PM, cc...@dot11net.com wrote: > Greg, > > We build one of these for internal use (posted about it last week), but > ours is a passive device that needs an external switch. We use it in > combination with a 493 or 493ah on tower tops. It takes any input voltage > from 18-96 volts and outputs the same input voltage on 9 ports with two of > the ports switchable between the input voltage and 12 V. Why only two > ports? Well, to make it cheap enough, the voltage convertor we use only > outputs about 1 amp so running more than 2 devices would probably not > work. The voltage convertors we use are about $40 each so putting one on > each jack would make the device pretty expensive. I'm sure we could design > a power supply that would do everything we want, but since we aren't in > the electronics mfg. business, it would be more costly that it is worth to > us. > > With our next run, we will be making the board look a little different > with two rows of ethernet jacks on the front of the board facing out > instead of up/down. We find that getting the cables out of the jacks in > the current config can be a PITA (hence the pigtails in the pics). The > devices are about $150 in parts as they stand to make in small quanitites. > I posted last week about it because I wanted to see if I could use some > simple ICs to detect ethernet signal to trip a power relay to make a > remote power cycle by disabling the ethernet port. Further research shows > this is not possible without a PHY chip. I'll try to post a pic of one of > our tower top boxes, but if it doesn't make it and you want to see it, hit > me offlist. If you think it would be a big seller and you want to make an > investment, I'm sure we could come to an agreement ;). > > Cameron > >> Does anyone know of or use a POE powered POE splitter/switch combo which >> could be tower mounted which would allow a single ethernet cable carrying >> POE (perferrably 48v) up the tower, and then would pass POE (adjustable >> voltages) to multiple devices and also act as a switch (preferably >> managed)? I'm thinking of something that would let a person run a single >> Ethernet up the tower and then connect multiple POE powered devices. It >> seems like this is something that would be a big hit. Yes, I Googled it >> first. >> >> Greg >> >> >> -------------------------------------------------------------------------------- >> WISPA Wants You! Join today! >> http://signup.wispa.org/ >> -------------------------------------------------------------------------------- >> >> WISPA Wireless List: wireless@wispa.org >> >> Subscribe/Unsubscribe: >> http://lists.wispa.org/mailman/listinfo/wireless >> >> Archives: http://lists.wispa.org/pipermail/wireless/ >> > <POE_and_RB493.jpg><IMAGE_208.jpg> > > -------------------------------------------------------------------------------- > WISPA Wants You! Join today! > http://signup.wispa.org/ > -------------------------------------------------------------------------------- > > WISPA Wireless List: wireless@wispa.org > > Subscribe/Unsubscribe: > http://lists.wispa.org/mailman/listinfo/wireless > > Archives: http://lists.wispa.org/pipermail/wireless/ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
