I am going to put my antron 99 70 feet in the air but i cant set my tunning rings that high up there is there any way to set it before i put it up that hi? and where would the best place to ground it be ? thanks
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Antron 99
- Thread starter pimphand442
- Start date
We usually just stick the antenna on a pole out in the yard and set the swrs, generally speaking the antenna stays good when you put her up, sometimes even the swr's get lower.
In simple terms, Thirsty has it about right. His word, sometimes, is the key word. He describes it the way it is, but it is not always so easy to achieve good results...based on other guys experiences.
An antenna match is affected by its elevation, among other things. However the change is not linear, it changes more or less in the form of a non-consistent sinuous curve.
Depending on the match condition at the start of raising it higher, will also affect the end result, so "sometimes" is a good word to describe what can happen. IMO this means such results are not predictable.
It is alway best to tune at the feed point, installed height, and location.
Here is a report I did a while back considering just this issue.
View attachment Affect on match when raising antennas.pdf
All and all, I figure the differences are so small as to make little difference, so just tune it and raise it up there.
What do you have in mind, grounding for performance or safety?
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A99
I go along with what the other guys said, have my A99 at 38' to the bottom and it works well no TVI. I just used the antenna as it came out of the box, used 100' of 9913 coax on my roof in the center of my lot. I use the antenna on 10-11-12 an 15 meters works great, did put up a Hy-Gain P500 at 30' to the bottom and got complaints from the woman across the street that I was getting into her Hearing impaired phone, so I took it down. that antenna did pull in distant station 30 to 35 miles a little stronger, think it had a little lower angle of radiation, that maybe why at 30' to the bottom it was getting into her phone. On the A99 I run 25w- 200w an 500w PEP output but use a LDG Pro 1000 tuner to buffer any harmonics in my signal................Oldtimer
I go along with what the other guys said, have my A99 at 38' to the bottom and it works well no TVI. I just used the antenna as it came out of the box, used 100' of 9913 coax on my roof in the center of my lot. I use the antenna on 10-11-12 an 15 meters works great, did put up a Hy-Gain P500 at 30' to the bottom and got complaints from the woman across the street that I was getting into her Hearing impaired phone, so I took it down. that antenna did pull in distant station 30 to 35 miles a little stronger, think it had a little lower angle of radiation, that maybe why at 30' to the bottom it was getting into her phone. On the A99 I run 25w- 200w an 500w PEP output but use a LDG Pro 1000 tuner to buffer any harmonics in my signal................Oldtimer
B
BOOTY MONSTER
Guest
I go along with what the other guys said, have my A99 at 38' to the bottom and it works well no TVI. I just used the antenna as it came out of the box, used 100' of 9913 coax on my roof in the center of my lot. I use the antenna on 10-11-12 an 15 meters works great, did put up a Hy-Gain P500 at 30' to the bottom and got complaints from the woman across the street that I was getting into her Hearing impaired phone, so I took it down. that antenna did pull in distant station 30 to 35 miles a little stronger, think it had a little lower angle of radiation, that maybe why at 30' to the bottom it was getting into her phone. On the A99 I run 25w- 200w an 500w PEP output but use a LDG Pro 1000 tuner to buffer any harmonics in my signal................Oldtimer
is buffering harmonics another term for filtering harmonics ? or is it two different things ?
did you try the tuner with the 500 ? or was it not able to get the harmonics out of it ?
Why do you assume there are harmonics involved at all?
- 'Doc
I thought I heard someone playing the harmonics.
what about groundin the antenna whats the best way to do that? thank for all the info guys i really appreciate it
A99
BM,
Your first question, the answer is YES. When using the HGP 500 my lowest SWR was 1.2 on 27.205 which would work out to around 54-55 ohms I believe, good but no cigar! I like the HGP very much, but it is not a very wide banded antenna. If I spend some time with this antenna I am sure I could have worked it out to get the SWR down to 1.1 or maybe flat.
The problem was two fold. I could not raise the antenna more than 30' to the bottom and the only place it could be install was 30' closer to the ladies house across the street, and it could only be use it on 11 meters using low power, where using the A99 gives me more options. Third question no I did not use the tuner with the HGP-500. The coax shield are grounded when it goes down to ground level, that is a standard practice for me with all coaxes going to my antennas................Oldtimer
BM,
Your first question, the answer is YES. When using the HGP 500 my lowest SWR was 1.2 on 27.205 which would work out to around 54-55 ohms I believe, good but no cigar! I like the HGP very much, but it is not a very wide banded antenna. If I spend some time with this antenna I am sure I could have worked it out to get the SWR down to 1.1 or maybe flat.
The problem was two fold. I could not raise the antenna more than 30' to the bottom and the only place it could be install was 30' closer to the ladies house across the street, and it could only be use it on 11 meters using low power, where using the A99 gives me more options. Third question no I did not use the tuner with the HGP-500. The coax shield are grounded when it goes down to ground level, that is a standard practice for me with all coaxes going to my antennas................Oldtimer
Get a Penetrator 500 and get it too 70' with a heavy ground wire attached to the mounting clamps too a ground rod back on earth and reach out touch everyone!
Have fun with it!
Pimphand442.
I see nobody gave ya a simple answer.
Just stick it on a ten foot pole and set the swr and you should be fine.
Also why is it when someone asks a question not only on here but all forums the answers always go to something else. Like Pimphands question it went to other antennas and harmonics antenna match etc.
I'm not putting anyone down but just wondering ????
God Bless
I see nobody gave ya a simple answer.
Just stick it on a ten foot pole and set the swr and you should be fine.
Also why is it when someone asks a question not only on here but all forums the answers always go to something else. Like Pimphands question it went to other antennas and harmonics antenna match etc.
I'm not putting anyone down but just wondering ????
God Bless
B
BOOTY MONSTER
Guest
Thirsty essentially gave the same answer you did . then Eddie got into more detail about the how and why .
then the discussion evolved .
that's my take FWIW .... or not
if i stick it on a ten foot pole and set the swr's can i then take it and put it 70 or 80 feet up and will the swr's stay the same or change ? thank you