Search String: Display: Description: Sort:

Results:

References: [ +subject:/^(?:^\s*(re|sv|fwd|fw)[\[\]\d]*[:>-]+\s*)*\[TowerTalk\]\s+Coax\s+Line\s+Loss\s*$/: 5 ]

Total 5 documents matching your query.

1. [TowerTalk] Coax Line Loss (score: 1)
Author: k6tfz@aol.com
Date: Sat, 12 Apr 2008 16:22:14 -0400
I have 150 feet of 15 year-old Rg-214 still up. I measured the power in at 50W and the power out (at the other end) at 36.6W using a dummy load terminator of 50 ohms. As it still good or should I cha
/archives//html/Towertalk/2008-04/msg00242.html (6,745 bytes)

2. Re: [TowerTalk] Coax Line Loss (score: 1)
Author: "Gedas" <w8bya@mchsi.com>
Date: Sat, 12 Apr 2008 17:11:21 -0400
1.36 dB loss according to my windoze calculator. Only you can determine if that is good enough for your needs or not. Gedas, W8BYA http://gedas.cc http://www.w8bya.com _______________________________
/archives//html/Towertalk/2008-04/msg00244.html (8,158 bytes)

3. Re: [TowerTalk] Coax Line Loss (score: 1)
Author: Jim Lux <jimlux@earthlink.net>
Date: Sat, 12 Apr 2008 14:50:42 -0700
What frequency? For RG-213 (which is quite similar, 214 just has a double shield)... at14 Mhz, 150 ft has about 1.1dB of loss, so you'd get 38.7W at the load with 50W in.. That's pretty close to what
/archives//html/Towertalk/2008-04/msg00247.html (7,430 bytes)

4. Re: [TowerTalk] Coax Line Loss (score: 1)
Author: "Jim Brown" <jim@audiosystemsgroup.com>
Date: Sat, 12 Apr 2008 15:15:07 -0700
Yes, the loss you measured is 1.36 dB. ARRL's TLW calculator for Belden 8267 (RG213) predicts a loss of 1.17dB at 14 MHz, and 1.71dB at 28 MHz. The difference at 14 MHz is 0.2 dB, but is likely to be
/archives//html/Towertalk/2008-04/msg00248.html (7,748 bytes)

5. Re: [TowerTalk] Coax Line Loss (score: 1)
Author: "Roger (K8RI)" <K8RI-on-TowerTalk@tm.net>
Date: Sun, 13 Apr 2008 00:11:06 -0400
db loss = 10log(50/36.6)=1.3549/150ft=*100=0.90 db/100 ft which ain't bad if you did the test on 14 MHz. It's far too good for 30 Mhz. 73 Roger (K8RI) _______________________________________________
/archives//html/Towertalk/2008-04/msg00255.html (8,225 bytes)


This search system is powered by Namazu