Thanks for clarifying this... it makes sense... :)
Faisal Imtiaz Snappy Internet & Telecom 7266 SW 48 Street Miami, FL 33155 Tel: 305 663 5518 x 232 Help-desk: (305)663-5518 Option 2 or Email: [email protected] > From: "Mark Radabaugh" <[email protected]> > To: [email protected] > Sent: Wednesday, December 7, 2016 1:16:18 PM > Subject: Re: [AFMUG] WTB IP-20C POE > It’s marked -48V on the power connector. I don’t think I would try floating a > ground with it to use +48. If you only have +48 a Meanwell DC/DC converter to > get -48V is a lot less expensive than the POE injector. Of course maybe you > want POE in which case it might justify the cost. > We routinely run these with a 2x22 gauge copper + 2 fiber cable where we use > the > copper as the -48V/0V and the fiber for data. We do not connect the POE/Copper > Ethernet port, or the 3rd management port. > Mark Radabaugh > Amplex > 22690 Pemberville Rd > Luckey, OH 43443 > 419-837-5015 x1021 > 419-261-5996 (cell) > [email protected] >> On Dec 7, 2016, at 11:09 AM, Faisal Imtiaz < [email protected] > >> wrote: >> Hi Mark, >> Just to make sure there this is no confusion in the 'lingo' >> 820C/IP20c is designed to run on -48v DC (telecom power plant), and the radio >> gets powder via the Ethernet cable (POE) >> The external POE Injector device is presented as a DC-DC converter.. >> The question was is this necessary when using +48vdc power source or just a >> matter of changing polarity... >> Regards. >> Faisal Imtiaz >> Snappy Internet & Telecom >> 7266 SW 48 Street >> Miami, FL 33155 >> Tel: 305 663 5518 x 232 >> Help-desk: (305)663-5518 Option 2 or Email: [email protected] >> ----- Original Message ----- >>> From: "Mark Radabaugh" < [email protected] > >>> To: [email protected] >>> Sent: Wednesday, December 7, 2016 10:56:06 AM >>> Subject: Re: [AFMUG] WTB IP-20C POE >>> The answer to the question: >>> The 820C runs perfectly fine on -48VDC run directly to the radio. >>> You do not need the POE adapter unless you really want to run them using >>> POE. >>> I do not explicitly know if they will run on +48VDC - I believe they will >>> but >>> have not actually tried that. >>> We have quite a few running on -48VDC from Emerson and Eltek rectifier >>> shelfs. >>> Mark >>>> On Dec 7, 2016, at 10:20 AM, [email protected] wrote: >>>> yes >>>> -----Original Message----- From: Faisal Imtiaz >>>> Sent: Tuesday, December 6, 2016 5:13 PM >>>> To: [email protected] >>>> Subject: Re: [AFMUG] WTB IP-20C POE >>>> Hi Chuck... >>>> This may be an opportunity to clarify something... >>>> According to the specs Ceragon IP-20c is a -48vdc radio. >>>> Their POE box/adapter, takes 48v dc or 24v dc and powers the radio. >>>> There has not been any clear answer if their Radios will run on regular >>>> 48vdc >>>> directly ... >>>> There have been folks who have 'tested' the cambium 820 version of these >>>> plugging directly on the Netonix switches. >>>> In my opinion, these are not 'in-expensive' radios that I would risk >>>> installing >>>> in-correctly. >>>> In recommending your injector / surge protector as a solution, my question >>>> would >>>> be. >>>> 1) can we do -48v dc power via these devices ? it is just a matter of >>>> making >>>> sure the polarity of the dc cable is correct ? or is there more to it. >>>> Regards >>>> Faisal Imtiaz >>>> ----- Original Message ----- >>>>> From: "Chuck McCown" < [email protected] > >>>>> To: [email protected] >>>>> Sent: Tuesday, December 6, 2016 6:08:49 PM >>>>> Subject: Re: [AFMUG] WTB IP-20C POE >>>>> I am hurt... >>>>> http://www.mccowntech.com/800-gige-poe-outdoor-midspan-poe-injector-ethernet-surge-protector/ >>>>> http://www.mccowntech.com/800-gige-poe-apc-rack-mount-surge-protector-power-inserter/ >>>>> Sheesh! >>>>> -----Original Message----- >>>>> From: Faisal Imtiaz >>>>> Sent: Tuesday, December 06, 2016 3:55 PM >>>>> To: [email protected] >>>>> Subject: Re: [AFMUG] WTB IP-20C POE >>>>> Some suggestions:- >>>>> for the POE injector... >>>>> you can try a Cambium Reseller. >>>>> you can possibly by them on Ebay (shipping from Israel) >>>>> you can try Surplus Wireless Gear folks too. >>>>> In regards to the Power Supply, that is a straight forward 48v DC power >>>>> supply (Brick). >>>>> Regards >>>>> Faisal Imtiaz >>>>> Snappy Internet & Telecom >>>>> 7266 SW 48 Street >>>>> Miami, FL 33155 >>>>> Tel: 305 663 5518 x 232 >>>>> Help-desk: (305)663-5518 Option 2 or Email: [email protected] >>>>> ----- Original Message ----- >>>>>> From: "Sterling Jacobson" <[email protected]> >>>>>> To: "[email protected]" <[email protected]> >>>>>> Sent: Tuesday, December 6, 2016 5:45:19 PM >>>>>> Subject: [AFMUG] WTB IP-20C POE >>>>>> Somehow I misplaced my Ceragon POE injector and power supplies during a >>>>>> cabinet >>>>>> move. >>>>>> Anyone happen to have a Ceragon IP-20C compatible POE unit they could >>>>>> sell >>>>>> me? >>>>>> I think the power supplies probably aren't that hard to find, but the POE >>>>>> apparently is.
