Gary, Now I know you are kidding, hi.
73, ron, n9ee/r From: Gary Schafer <[EMAIL PROTECTED]> >Date: 2007/09/01 Sat PM 08:58:13 CDT >To: [email protected] >Subject: RE: RE: RE: RE: RE: RE: Re: Re: RE: [Repeater-Builder] Re: Duplexers > >How do you know it is not 75 ohms at DC? >How long do you think it will take for the DC signal to reach the other end >of the coax if it is applied at one end? Will it be at the speed of light? > >73 >Gary K4FMX > >> -----Original Message----- >> From: [email protected] [mailto:Repeater- >> [EMAIL PROTECTED] On Behalf Of Ron Wright >> Sent: Saturday, September 01, 2007 8:02 PM >> To: [email protected] >> Subject: Re: RE: RE: RE: RE: RE: Re: Re: RE: [Repeater-Builder] Re: >> Duplexers >> >> Jeff, >> >> The question is way off base. No one said one cannot carry DC or any >> other signal on coax. The question was what was the impedance of a coax >> at given frequencies. >> >> At DC I can guarantee you RG59 is not 75 Ohms unless you got enough to get >> enough R and this is totally another discussion. I would think you would >> agree one will not see RG59 being 75 Ohm at DC. The same can be said at 1 >> Hz or 2 Hz or 5 Hz...etc. There is a point at which it starts to >> propergate and does look like 75 Ohms. I think you might understand this. >> >> 73, ron, n9ee/r >> >> >> >> >> >From: Jeff DePolo <[EMAIL PROTECTED]> >> >Date: 2007/09/01 Sat PM 01:18:35 CDT >> >To: [email protected] >> >Subject: RE: RE: RE: RE: RE: Re: Re: RE: [Repeater-Builder] Re: Duplexers >> >> > >> >> I don't know where the confusion is...all coax and feedline >> >> has a upper and lower freq limit. Might try to learn >> >> something about this. >> > >> >If what you say is true, can you tell me, using sound engineering and >> math, >> >why you can carry DC on coax if it has a low-frequency cutoff? >> > >> > --- Jeff >> > >> > >> >> >> Ron Wright, N9EE >> 727-376-6575 >> MICRO COMPUTER CONCEPTS >> Owner 146.64 repeater Tampa Bay, FL >> No tone, all are welcome. >> >> >> >> >> >> >> >> Yahoo! Groups Links >> >> >> > > Ron Wright, N9EE 727-376-6575 MICRO COMPUTER CONCEPTS Owner 146.64 repeater Tampa Bay, FL No tone, all are welcome.
