Isn't a lot of the smaller stuff copper clad aluminium? how would one go about calculating that?
On Tue, Nov 3, 2015 at 2:44 PM, Chuck McCown <[email protected]> wrote: > Depends on the size of the heliax. The larger stuff has a tube as center > conductor. In any event just calculate the cross sectional area of the > copper of the center conductor and you can compare that with a wire gauge > chart. > > *From:* Adam Moffett <[email protected]> > *Sent:* Tuesday, November 03, 2015 1:08 PM > *To:* [email protected] > *Subject:* Re: [AFMUG] using heliax for DC power up tower? > > For equivalent wire gauge would you just compare the center conductor > diameter to a wire gauge chart? > > > On 11/2/2015 6:51 PM, Chuck McCown wrote: > > It is pretty easy to insert and remove power from a coax that also has RF > on it too. Just a choke coil and capacitor at both ends. If you want > details give me the frequency and what kind of power and I will design it > for you. > > *From:* Jaime Solorza <[email protected]> > *Sent:* Monday, November 02, 2015 4:49 PM > *To:* Animal Farm <[email protected]> > *Subject:* Re: [AFMUG] using heliax for DC power up tower? > > > Yep .we used. LMR 400 to power custom made receive amps for WMux radios we > modified long time ago. > > Jaime Solorza > On Nov 2, 2015 3:51 PM, "Chuck McCown" <[email protected]> wrote: > >> Just make sure if you hook it up to 120 VAC main current you don’t put >> the hot wire on the outer conductor of the coax... >> >> *From:* Ty Featherling <[email protected]> >> *Sent:* Monday, November 02, 2015 3:43 PM >> *To:* [email protected] >> *Subject:* Re: [AFMUG] using heliax for DC power up tower? >> >> Thanks all, great solution Josh! >> >> -Ty >> >> >> >> -Ty >> >> On Mon, Nov 2, 2015 at 4:38 PM, Chuck McCown < <[email protected]> >> [email protected]> wrote: >> >>> You can run DC *or* AC over it. >>> >>> Think of it this way, 1000 watt ham radio puts 223 volts AC (at RF >>> frequencies) on the coax and everything is just fine. >>> >>> All CATV systems put 60 or 90 volts AC on the line to power the amps. >>> >>> *From:* Ty Featherling <[email protected]> >>> *Sent:* Monday, November 02, 2015 2:09 PM >>> *To:* <[email protected]>[email protected] >>> *Subject:* [AFMUG] using heliax for DC power up tower? >>> >>> Any reason I couldn't use 1/4" heliax I already have in place up a tower >>> to run power to a POE switch? >>> >>> This is the stuff: >>> https://www.tessco.com/products/displayProductInfo.do?sku=469162 >>> >>> -Ty >>> >> >> > >
