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I once worked for a nickel-and-dime company in Albuquerque. We were
expected to make good engineering measurements in a lab with no AC in the
summer. Our lab ran 110 to 125 most of the time in afternoons. Without
permission from 'the boss' I called in an HVAC outfit to at least look at
the old and ratty swamp cooler system, if you could call it a system.....
No hope. I got fired for that. And, they were dumping extremely hazardous
and carcinogenic waste along the curbing as they didn't dare put it into
the sewer system. Oh, yes, should I mention the knife and bow-and-arrow
fights after hours..... Enough...... One in my career is more than
enough! I'm well familiar with those companies and thankful I'm retired.
NO MORE CORPORATE AMERICA for me!!!! Just keep contributing to our Social
Security.??

Dave - W?LEV

On Tue, Oct 27, 2020 at 7:52 PM ERNEST AEC-RADIO <aecradio1@...>
wrote:

David:
This shop has a history of people without any radio experience, and I am
being ignored as to my reasons why everything needs to be rebuilt.
I suspect the owner is treating a business, as a hobby, and is also very
cheap.
Nickel and dime things are okay, but big ticket items are not.
It has been more than a year since I was last on the roof, and I know the
person that has been up there, has no idea what he is doing, and has zero
interest in the work.
I offered to assist with his understanding of cables, loss and why they
need to be short, direct runs, but it goes in one ear and out the other.
The owner shows no concern or care as well.
Thankfully, I am changing my life soon, and getting out of Arizona. I

hate

totalitarian police states, and the unconstitutional employees are

ruining

a good life for everybody.
I just wish I could make the owner understand that the rat race of cables
is far excessive and, to properly tag each antenna with proper data, so I
know immediately what is up there, and what band/s they are tuned for.
Right now, it's a crap shoot!
Spock would go insane here....NO LOGIC!

On Tue, Oct 27, 2020 at 11:49 AM David Eckhardt <davearea51a@...>
wrote:

FIRST ATTACHMENT: With an 'average' RT of 15 dB, I doubt much RF is
getting to whatever is at the far end of the coax! The vast majority

of

the data indicates lossy coax. The coax is pretty lossy!!! You might

have

a real antenna at the other end that wants to ring at roughly 450 to

455

MHz. But with that much loss, not much RF will reach this 'maybe'
antenna. Most of the data is due to lossy coax.

SECOND ATTACHMENT: Really can't make much sense of this. Everything
appears to be in milliohms. I don't know??

THIRD ATTACHMENT (Smith Chart): Again, lots of loss. Nearly all the

data

is within the 2:1 circle which indicates nothing but coax cable loss.

It

shows multiple real-axis crossings near center (50-ohms), but I

seriously

doubt much RF is reaching whatever is connected. Lots of loss!

FOURTH ATTACHMENT: Again, all resistance indications illustrate a lot

of

loss with all values between 20 and 100-ohms. This is all due to cable
loss.

FIFTH ATTACHMENT: I would presume the horizontal assembly of plates

that

all the coaxial runs cross is copper and intended for

lightning/discharge

remediation. I'm not addressing the sheet of plywood at the top. This

is

NOT a proper installation for that purpose!!!! What's more, the

'ground'

wire is too haphazardly routed and too small of a gauge to be of much

good

other than to serve as a return for small, low-frequency energy.

CONCLUSION: I don't know how long the coax runs are, but I'd suggest
replacing them all. All your plots show is loss in the cabling! The
mostly <2:1 SWR across your measurement bandwidth is all due to coax

loss.

There is far too much loss indicted by all your measurements. This

time:

1) have someone familiar with RF install them and use good cable and 2)
Have someone familiat with proper return current (from close-by

lightning

strikes) do the 'grounding' side of the installation.

You're right. It's a mess.........

Dave - W?LEV

On Tue, Oct 27, 2020 at 5:32 PM ERNEST AEC-RADIO <aecradio1@...>
wrote:

Okay, I saved each image, 1 through 4.
THese should now paint a better picture of what I am dealing with.
I have no clue which antenna these readings are for, and that is one

tiny

problem I doubt I will get an answer to.
The cable runs are excessive, well over 150 feet, and at least two
transitions in between.
The entire cable plant is a horrid nightmare!
The cables were hung/run/strung up by someone that had NO RF

experience!

One walk through would incite laughter and hysteria...how any signal

can

reach any of those antennas, MUST be a miracle!
I will have to take one pic just to prove the mess I have to deal

with.

In fact, I am going to try doing that now.

--
*Dave - W?LEV*
*Just Let Darwin Work*

--
*Dave - W?LEV*
*Just Let Darwin Work*