Originally Posted by Doc Sief
3} My roof at the peak is 4o feet AGL on 3 of 4 sides, the 4th side is over a concrete path and sharp bushes 30ft;
Just sharing something often done in the northeast where I am from.
We suffer from inaccessable roofs of multi story buildings both rented and owned.
On the top floor pick two side by side windows spaced so that their distance apart horizontally
would also clear the roof peak vertically.
Lets call them left window for swival mount / right window for service access.
Outside of the left window,
also on the left side of this left window,
mount two saddle brackets.
One as low as is safe through the bottom with both windows slid up,
then slide both windows down and mount the second as high as is safe.
The difference with this compared to any other traditional dual-saddle wall mount installation is that the top saddle gets the mast thru-bolted so it can be swivelled.
Once the two saddles are in,
measuring between the two saddles tells you how far up from the bottom of the mast to drill
for the thru-bolt to be pre-attached.
Next attach a short pieces of good plastic coated dog-runner cable,
or whatever you have laying around that will stand the enviroment you live in
to the bottom of the mast.
It will be used to raise it from the "Service" postition up to the "Installed" position,
so it doesn't need to be that long.
Because both the top saddle mount's thru-bolt hole,
and mast's thru-bolt itself were prepared before hand.
All one has to do is toss a rope out the top of the left window to lift what is actually the bottom of the mast up to to that top saddle and spin a nut on the thru-bolt.
It is of course pointing straight down at this point,
completely upside down to the way it will end up in the "Installed" position.
There have been many creative methods as to what can be done at the right window next...
But basiclly, I would use a third saddle mount mounted sideways out the left side of the right window.
Then I would cut up an old U-bolt to form a "J" and permanantly tighten it on the bottom hole of the saddle bracket's two holes that it would have normally gone through before the mod.
Then it is back to the left window to swing the mast from straight down position,
into a horizontal position that rests into the right windows sideways saddle bracket's "J" bolt.
As it is still just a bare mast. that is still fairly easy to do.
Slide both left windows back to the top and fish in that "Dog Runner" line you attached to the end of the mast to raise it up through the bottom of the left window.
Mount your antenna through the right window,
run your downfeed out the new hole you make in your wall at the left window,
and get it attached to the antenna at the right window,
throw a healthy handfull of tie-wraps around everything,
then raise it from the left window with that old dog-runner cable you attached.
And of course, don't forget the heavy guage cable you thru-bolt at the bottom saddle mount and dropped to the ground for the lightning rod you'll be pounding in the ground.
Duct (Duck) tape optional...
Never see a ladder or the roof.
This idea was borrowed from flagpoles.
Two pipes spaced the thickness of the flagpole would be sunk into cement in the ground.
Two thru-bolts through both those pipes and the flagpole in the center held it up.
But the top thru-bolt never gets removed.
Only the bottom one so the pole can be layed down for servicng
And another good thing is you can use your Ultrasonic Density Detector (Stud Finder) inside to find the studs,
then measure to the window edge and transfer those measurements outside to be sure the lags hit wood.
I used to screw a 2x4 across the left window horizontally
about 1/3 from the top of the whole window
to lean against for safety to work out the top though...