| Author |
Message |
    
Jaws792
New member
Username: Jaws792
Post Number: 4
Registered: 5-2007
| | Posted on Sunday, June 17, 2007 - 11:23 pm: | 
|
I have my antenna mounted 90' to the tip in a pine tree. I have heard different reports and want the truth. thanks |
Unit199
Intermediate Member
Username: Unit199
Post Number: 487
Registered: 8-2003
| | Posted on Monday, June 18, 2007 - 11:07 am: |
|
My personal opinion is, if I had my antenna in the air at all, I would not waste the money or time and effort for what little bit if any it helps.
HARVE
UNIT199
CEF210
CVC18
KB0YVK
|
Tech808
Moderator
Username: Tech808
Post Number: 13910
Registered: 8-2002
| | Posted on Monday, June 18, 2007 - 2:30 pm: |
|
Jaws792,
Check out the article below by clicking on the Blue Link written by Tech833.
CLICK HERE > Imax 2000 Ground Plane Kit Reviewed
About Tech833 the author:
The author is a professional broadcast engineer with over 20 years experience in the design, maintenance, and construction of broadcast transmitter and studio facilities. He has experience with high power antenna installations and has been involved with simple single antenna installations to complex phasing and directional arrays. The author is currently a successful contract engineer in California and has become highly respected and well known in the industry.
Hope this help's,
Lon ~ Tech808 ~ N9CEF
CEF#808 ~ CEF HAM#33 ~ CVC#002
Tech808@copperelectronics.com
|
Jaws792
New member
Username: Jaws792
Post Number: 5
Registered: 5-2007
| | Posted on Monday, June 18, 2007 - 3:13 pm: |
|
Thanks, I read the article but I'm not a scientist or engineer so cutting through all the technical stuff, corrcect me if I'm wrong, but is the only real considerable benefit using the GPK at my antenna height (90') a reduction in TVI?
How would I determine wht my take off angle would be at this height? |
Kid_vicious
Senior Member
Username: Kid_vicious
Post Number: 2557
Registered: 9-2004
| | Posted on Tuesday, June 19, 2007 - 12:46 am: |
|
the groundplane kit will help lower the take-off angle which is good for DXing.
on an antron 99, it doesnt do too much for the signal, but because the IMAX is a 5/8 wave antenna, it benefits from a counterpoise.
so, there are benfits. as to how noticable they will be; who knows.
if it were my antenna, i would add it.
BUT! i would only buy the GPK if i was already running good coax like LMR400, 9913, or the stuff copper sells that is comparable.
your coax run is long. you need good coax.
have fun,
matt
anyone wanting a "clean signal", just look to the left and build one of these!!!
|
|
