Amen! Someone sent me a note asking if my comment was an intended insult.
It wasn't. Didn't realize folks got bent so easy. Here was my reply:
No insult intended. I do more listening than operating and I get a
little
amused by the hair-splitting that some folks on the reflectors get involved
in. Not saying it is bad, always something to learn from the discussions,
but more often than not it doesn't reflect the real world that most hams are
able to function in.
Even with the 'right' coax, stacks of antennas and big amps, there
are a lot
of hams whose operating practices fall short and they blame the equipment
when a fine operator with simple and what many purists would consider
terrible antennas snap up a DX station right from under their noses. The
recent K1N effort illustrated that.
Just an observation,
Don W7WLL
Not to split db's, but I had some old RG-8 coax that I acquired somewhere
around 1954 and have used at different QTH's that ran to one of the beams.
The connectors were so old they even had the screw in the body! While I
recognize coax doesn't last forever, sometimes it comes close. I only
replaced it because of a split that occurred in the jacket last winter when
I had it laying on the grass (my coax's go to the tower overhead) and I got
to close with the mower. Water infusion of course with the first rain of
course, I missed seeing the cut and had the attendant problems. Replaced it
with some nice fresh high grade good brand RG-213. Expected to be able to
hear and transmit better, but I can't tell the difference over the old war
surplus RG-8 before it was damaged, truthfully!!!!!
-----Original Message-----
From: Roger (K8RI) on TT
Sent: Wednesday, February 18, 2015 10:40 PM
To: towertalk@contesting.com
Subject: Re: [TowerTalk] [Bulk] Coax cable economics. (was Mosley Antenna
Question)
Some antennas work better than others, some really big commercial
antennas have had dismal performance, among them some of the really big
Mosley pros for a while. One down the road a ways from me was comparable
to a dipole, but I understand they've ironed the kinks out out of those
antennas.
Some hams work lots of DX with big antennas and QRO, while some work it QRP.
Some work it in spite of their antennas.
Some swear by trap verticals I've mostly sworn at! A/B Tests showed
they were really comparative poor performers "at my location and
installation."
I've worked DX around the clock on 40 during the last sunspot cycle low
with a sloping half wave dipole and many tines ion the first call. One
station laughed at my apparent confidence in just giving a 1 X 1 call.
It wasn't confidence, it's just I get tired of hearing stations give
their calls half a dozen times.
I've also had days, where it didn't seem to matter what I was using,
they didn't hear me.
I've been in conversations that had stations from all continents save
one...On six meters.
You can run the best coax money can but, but it's all for naught if you
can't install connectors properly. It's the same for big antennas.
It's possible, easily possible, to build a station so elaborate you have
problems using it efficently, or even making reliable contacts.
It's easily possible with a number of rigs that give the ham tremendous
control of the signal to totally turn it into garbage so the only ones
who think you have a great signal, run the same rigs. I've heard it!
Good coax, or the cheap stuff? How much difference does it make?
UHF, N-Type, or 9-16 connectors? If you are running HF, or VHF, how
much difference does it make?
Speaking in generalities, The loss in normal connectors is so small that
up through VHF often even into 2-meters for 200 foot runs, coax and
connectors (except the little stuff) will make so little difference the
other "stations" will not be able to tell the difference. The same is
true for most RG-8 size coax cables. 0.7, 1,or 2 db per hundred.
Remember, 1 db is "just barely noticeable" UNDER IDEAL CONDITIONS.
Typically on HF 3 db won't, or can't be noticed. 6 db on 200 feet
"might" as it's a whole S unit, but when on 160, 75, and even 40 (often
even 20) how often is the noise floor below S1, or S2?
I have copied stations in the noise level that was well less than S-1 on
6-meter Aurora that were not visible on the scope. I copied the CW as a
slight change in the bacground noise. There 3 db would have made a
difference. Possibly, Quite likely, even 1 db, but those conditions are
not normal on HF.
BTW, I like 7/8ths Heliax because it's rugged!, but I dislike all 1/2"
hardline for the same reason. "At this location", I've found 1/2" hard
line, be it Heliax or CATV line to be far too fragile and easy to link.
When I lived West of Farwell MI, the base of my tower was a good 50 feet
above the top of the house and over a hundred yards from station to
tower. I ran plain, old 3/4" Aluminum hard line (75 ohm) direct
buried. It came up about a year and a half later looking as good as
when I put it in.
But back to coax, on HF, regardless of what you spend on runs up to 200
feet. RG8 size Will be pretty much the same as far as being able to see
a difference. Coax that will last is important, but the difference
between the best and normal stuff is trivial.
It's well to strive for the best we can afford, but not being able to
afford the best is not really a handicap. Put in the best antenna you
can afford as high as ideal, if you can afford it and as close to the
station as is practical. Install connectors properly.
Listen, listen, listen. Listen for when the stations call that work
them on the first or second call. Try to learn WHEN to call and keep
your calls short. Skill and timing are great equalizers when it comes
to power.
73 es gud luck,
Roger (K8RI)
---
This email has been checked for viruses by Avast antivirus software.
http://www.avast.com
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
_______________________________________________
_______________________________________________
TowerTalk mailing list
TowerTalk@contesting.com
http://lists.contesting.com/mailman/listinfo/towertalk
|