Hi Mal, I experience running wireless equipment at high power radio sites. UTP is a poor idea at any distance but if you have to, bring some ferrite chokes along. Be prepared to turn auto-negotiation off, and maybe settle for 100 Mbps full-duplex link speeds.
I installed some equipment in December 2019 in a VHF/UHF rack & used a metallic armoured CAT6A patch lead. Found its Ethernet performance to be outstanding. Fast auto-negotiate, no errors, etc.. Cable I used was https://www.gowifi.co.nz/patchleadsa/apl-ftp6a-0.5.html I'm not sure who the manufacturer is but it's a really nice product. It's my preference to use pre-manufactured cables as it can be tough to get everything perfect when you're crimping your own shielded cables. -JB On Wed, 4 Mar 2020 at 15:58, John England <[email protected]> wrote: > From experience I'd just stay away from ethernet anywhere near VHF radio's > and run fiber everywhere. > > I've had multiple parallel runs over ~30M near a 5W radio using grounded > armoured cable and depending on the device I either lose link or get RX > errors. Tried filters and different grounding configurations with no > success. > > Also if the VHF gear is doing any receiving you will increase their noise > floor. > > Cheers. > > John England > > > > -----Original Message----- > From: AusNOG <[email protected]> On Behalf Of Mal > Sent: Wednesday, 4 March 2020 7:43 AM > To: John Edwards <[email protected]>; Nathan Brookfield < > [email protected]> > Cc: [email protected] > Subject: Re: [AusNOG] Leaky Feeder & UTP > > > > On 03/03/2020 11:06 pm, John Edwards wrote: > > Separation distance is also prudent for electrical safety between > > systems that have different electrical characteristics, in the event > > of an incident that causes the cables to become uninsulated and in > > contact with each other. > > > > Thanks John - Hence my question on distance. > > We're looking at 500mm separation, but was looking to see what others use. > > > Thanks Nathan - VHF, Repeaters supporting 148-175Mhz. And the obvious > carrier signal on ethernet of 125Mhz. > > Essentially, UTP tails present parallel for short tunnel distances to > present WAPs from field cabinets. No ethernet repeaters, all fibre > backhual. > > Mal > > > _______________________________________________ > AusNOG mailing list > [email protected] > http://lists.ausnog.net/mailman/listinfo/ausnog > _______________________________________________ > AusNOG mailing list > [email protected] > http://lists.ausnog.net/mailman/listinfo/ausnog >
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