- 1. [TowerTalk] Using 75 Ohm Hardline (score: 1)
- Author: "Gedas" <w8bya@mchsi.com>
- Date: Sat, 4 Jun 2005 20:29:01 -0500
- Hi everyone. I was wondering if someone could recommend an easy and elegant method that would allow me to use a bunch of 7/8" 75 ohm hardline I have. My antennas on 2 of 3 towers require over 270' ru
- /archives//html/Towertalk/2005-06/msg00108.html (7,031 bytes)
- 2. Re: [TowerTalk] Using 75 Ohm Hardline (score: 1)
- Author: Don Havlicek <n8de@thepoint.net>
- Date: Sat, 04 Jun 2005 22:28:17 -0400
- Your tuner/transmitter/amplifier will not know you're using 75 ohm feedline IF you tune the output FOR 75 ohms impedance. As for the antenna ... if you adjust the feedpoint match ... you can MAKE it
- /archives//html/Towertalk/2005-06/msg00109.html (9,412 bytes)
- 3. Re: [TowerTalk] Using 75 Ohm Hardline (score: 1)
- Author: VR2BrettGraham <vr2bg@harts.org.hk>
- Date: Sun, 05 Jun 2005 02:46:59 +0000
- I once put a tribander in a tree for someone who fed it with 75-ohm hardline of some sort (left over from a big 6m array that had been in the tree). At the antenna end, it was a relatively simple mat
- /archives//html/Towertalk/2005-06/msg00110.html (7,456 bytes)
- 4. Re: [TowerTalk] Using 75 Ohm Hardline (score: 1)
- Author: K4SB <k4sb@bellsouth.net>
- Date: Sun, 05 Jun 2005 04:43:42 +0000
- Easy.. visit your friendly Ace hardware and buy a 7/8" brass compression fitting. Get the type which will allow you to screw/put a reducer which will bring it down to 1/2". Be sure you have removed a
- /archives//html/Towertalk/2005-06/msg00111.html (8,824 bytes)
- 5. Re: [TowerTalk] Using 75 Ohm Hardline (score: 1)
- Author: K4SB <k4sb@bellsouth.net>
- Date: Sun, 05 Jun 2005 04:55:32 +0000
- ......... First of all, Bird does not make a 75 ohm wattmeter as standard equipment. They used to custom build one for you, but expect to pay about 3 times what a normal Bird will cost. Don't know i
- /archives//html/Towertalk/2005-06/msg00112.html (8,951 bytes)
- 6. Re: [TowerTalk] Using 75 Ohm Hardline (score: 1)
- Author: Pete Smith <n4zr@contesting.com>
- Date: Sun, 05 Jun 2005 06:39:52 -0400
- You don't have to use transformers, if the feedline is long enough -- in my case, I cut for a full wave at 1750 khz, and the resulting cable is 12 half waves on 15 meters. A half wave on 80m is 6 hal
- /archives//html/Towertalk/2005-06/msg00113.html (8,688 bytes)
- 7. Re: [TowerTalk] Using 75 Ohm Hardline (score: 1)
- Author: "David Robbins K1TTT" <k1ttt@arrl.net>
- Date: Sun, 5 Jun 2005 11:03:02 -0000
- First, forget the impedance mismatch, for hf use it is absolutely insignificant. Then follow the comments some others have made about using plumbing fittings to make your own connectors, cover them w
- /archives//html/Towertalk/2005-06/msg00114.html (9,824 bytes)
- 8. Re: [TowerTalk] Using 75 Ohm Hardline (score: 1)
- Author: "Gedas" <w8bya@mchsi.com>
- Date: Sun, 5 Jun 2005 09:19:08 -0500
- Wow, what great responses from so many on and off-line. Thank you all those who helped think this through. As I mentioned in the original post, I have been using the cable for VHF/UHF for some time a
- /archives//html/Towertalk/2005-06/msg00122.html (12,619 bytes)
- 9. Re: [TowerTalk] Using 75 Ohm Hardline (score: 1)
- Author: "Tom Rauch" <w8ji@contesting.com>
- Date: Sun, 5 Jun 2005 14:15:47 -0400
- all bands my antenna were a 1:1 (at 50 ohms) I would not have worried about the immediate jump to 1.5:1 or the extra loss created by such. My antenna at best is around 1.5:1 and near the band edges
- /archives//html/Towertalk/2005-06/msg00128.html (9,819 bytes)
- 10. [TowerTalk] Using 75 Ohm Hardline (score: 1)
- Author: Bill Tippett <btippett@alum.mit.edu>
- Date: Sun, 05 Jun 2005 18:40:32 -0400
- W8BYA: method that would allow me to use a bunch of 7/8" 75 ohm hardline I have. My antennas on 2 of 3 towers require over 270' runs and I would like to use this very nice hardline. On VHF and UHF I
- /archives//html/Towertalk/2005-06/msg00137.html (8,114 bytes)
This search system is powered by
Namazu