Re: [Repeater-Builder] HJ9-50 loss

2005-06-05 Thread mch
Well, the specs for LMR400 (same frequency - same length) is 0.388 dB and 9913 is .421 dB. RG-6 would be 0.932 dB. So, if 0.34 is too much, the others you mentioned would be no solution. Joe M. Ralph Mowery wrote: > > --- mch <[EMAIL PROTECTED]> wrote: > > > Thanks for the quick reply. I could

Re: [Repeater-Builder] HJ9-50 loss

2005-06-05 Thread Glenn Little WB4UIV
I was told that cable starts to act like lossy waveguide when the cable gets large and the frequency get high. I now see that good RF cable manufactures and sellers now publish the upper frequency limit when they publish loss for larger cable. 73 Glenn WB4UIV At 09:50 PM 06/04/05, mch wrote:

Re: [Repeater-Builder] HJ9-50 loss

2005-06-05 Thread Ralph Mowery
--- mch <[EMAIL PROTECTED]> wrote: > Thanks for the quick reply. I couldn't find that > anywhere on the net. > > I have a guy who is telling me that 0.34 dB (at 900 > MHz) > is too much loss on a SCANNER antenna run. LOL! > > I'm going to ask him if I should use HJ9-50 instead. > ;-> > While t

Re: [Repeater-Builder] HJ9-50 loss

2005-06-05 Thread Hap Griffin
- Original Message - From: "mch" <[EMAIL PROTECTED]> To: Sent: Saturday, June 04, 2005 9:50 PM Subject: Re: [Repeater-Builder] HJ9-50 loss > Why is that? Does the feedline start acting like an antenna (or dummy > load) when the conductors are 1/4 wavelength apart

Re: [Repeater-Builder] HJ9-50 loss

2005-06-04 Thread DCFluX
Exactly. For example 1 5/8" hardline can't be used for 2.4GHz, but 7/8 works fine. On 6/4/05, mch <[EMAIL PROTECTED]> wrote: > Why is that? Does the feedline start acting like an antenna (or dummy > load) when the conductors are 1/4 wavelength apart or something? > > Joe M. > > DCFluX wrote: >

Re: [Repeater-Builder] HJ9-50 loss

2005-06-04 Thread mch
Why is that? Does the feedline start acting like an antenna (or dummy load) when the conductors are 1/4 wavelength apart or something? Joe M. DCFluX wrote: > > 960MHz is the highest usable frequency because the inner conductor to > outer conductor distance. Yahoo! Groups Links <*> To vis

Re: [Repeater-Builder] HJ9-50 loss

2005-06-04 Thread mch
Thanks for the quick reply. I couldn't find that anywhere on the net. I have a guy who is telling me that 0.34 dB (at 900 MHz) is too much loss on a SCANNER antenna run. LOL! I'm going to ask him if I should use HJ9-50 instead. ;-> Although I have no idea how I could connect it to the antenna! I

Re: [Repeater-Builder] HJ9-50 loss

2005-06-04 Thread DCFluX
5" Air Dielectric HJ series Loss per 100' 50 MHz = 0.0547dB 150MHz = 0.0981dB 300MHz = 0.143dB 450MHz = 0.180dB 800MHz = 0.250dB 960MHz = 0.278dB 960MHz is the highest usable frequency because the inner conductor to outer conductor distance. On 6/4/05, mch <[EMAIL PROTECTED]> wrote: > Anyone k

[Repeater-Builder] HJ9-50 loss

2005-06-04 Thread mch
Anyone know the loss of HJ9-50 at any frequency? (yea, it's BIG stuff!) Joe M. Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Ya