Attached is an interesting research paper by Clarence Beverage. -- 73, Jeff KH6O Attachment: NEW_AM_BROADCAST_ANTENNA_DESIGNS_HAVING_FIELD_VALI.pdf Description: Adobe PDF document _________________ S
Nothing attached.... because this reflector doesn't attach anything. Steve, K0XP _________________ Searchable Archives:http://www.contesting.com/_topband - Topband Reflector -- See my QRZ.com page at
Very interesting, thanks for sharing. I have seen similar information in one of the ARRL manuals, that elevated, insulated radials are more efficient than the typical ham buried 30 or 40 radials Perh
My pardon... I didn't notice it was actually attached way down at the bottom. Steve, K0XP Steve, K0XP _________________ Searchable Archives:http://www.contesting.com/_topband - Topband Reflector --
Milt Jensen, N5IA (SK) constructed his original (circa 1990s) 160M station TX antenna based on a similar design I encouraged him use. He built a 180 ft tower with an insulator at 50 ft, Four elevated
On 1/4/2024 9:53 PM, Robin wrote: Milt Jensen, N5IA (SK) constructed his original (circa 1990s) 160M station TX antenna based on a similar design I encouraged him use. He built a 180 ft tower with a
Actually WLW, 700, Cincinnati reduced their tower height to raise their angle so that the "first hop" hit the Columbus market, about 100 miles away. I believe this was after their 500KW era. BTW, th
As a student, I had co-op jobs both with WLWT and with Pete Johnson, a broadcast consultant who, with Carl Smith (CREI) wrote the FCC technical Rules after WWII. I also toured the WLW and adjacent VO
The advantage to this is that you can get away with wire composition (copper clad steel, or even aluminum if handled properly) that would not hold up on or under ground. And obviously, less wire is
One thing to bear in mind throughout any analysis of such designs for 160M is that the total focus of the Broadcast designs and measurements and proofs is energy at zero degrees elevation. Our needs
Author: Wes Stewart via Topband <topband@contesting.com>
Date: Fri, 5 Jan 2024 14:42:39 +0000 (UTC)
I was about to recommend Rudy's work. He is a prolific experimenter and writer; reading his stuff will answer almost anything you ever what to know about vertical antennas, ground systems and receiv
There is another practical issue here. I would agree that elevated radials can work great. But in practice, MAINTENANCE of the elevated radials is a non-ending headache. Around here we have deer a
Author: Wes Stewart via Topband <topband@contesting.com>
Date: Fri, 5 Jan 2024 15:38:00 +0000 (UTC)
Not me. My radials are all on the ground and they are all appropriately shortened. On Friday, January 5, 2024 at 08:05:47 AM MST, Jeff Blaine <keepwalking188@ac0c.com> wrote: There is another practi
I beg to differ on the High Maintenance possibility. I live in Southwest Wisconsin the Deer hunting capital of maybe the world. There are deer in my yard every day. We have wind storms, We have Ice s
I guess this list doesn't pass images sorry. Joe WB9SBD On 1/5/2024 9:55 AM, Joe wrote: I beg to differ on the High Maintenance possibility. I live in Southwest Wisconsin the Deer hunting capital of
The paper *A Closer Look at Vertical Antennas With Elevated Ground Systems*, by Rudy, N6LF goes into great detail on the subject. Referring to Figure 13, which compares Ga (Average Gain) for radial h
I have wire 4-squares on 80, 40 & 20. A 2-el on 160m <currently just 1-el> and a VDA looking 4-square on 15m. (still looking for a 10m 4-sq Comtek system someone might have collecting dust) My 80m an
Author: Brian D G3VGZ <topband@planet3.freeuk.co.uk>
Date: Sat, 6 Jan 2024 01:50:16 +0000
At an MF broadcast station station I worked at 50+ years ago a qsy of 200KHz HF had been made. Severe fading was then encountered at the edge of the service area at night from a high skylobe. About 2
In 1980 based on advice from a friend who had done a lot of government antenna work for WWV, VOA (I think), I put up 192 feet of Rohn 25G (!) solely dedicated to 160 Meters and had 9 radials (3 from