Radio Shack DLX magmount .................... 0db
K-40 .................................................. ....... .8db
Radio Shack 4.5' center load .................. 1.4db
5' Firestik ................................................ 3db
6.5" Hustler top load ............................... 4db
108' Stainless Steel whip ........................ 4.5db
7' Firestik .................................................. . 5db

Of coarse since the time of this test I have found
and measured even better antennas. Of these the
practical ones all use large diameter masting made of
highly conductive material. A large diameter, air spaced
loading coil. This coil is always upwardly located and the
overall antenna height

Damn Tnom, a 102 on a mag mount? You should be whipped. LOL

A homebrew triple magnet 750lbs magmount. Oops, I shouldn't have
mentioned it. Next thing you know Frank will want to borrow it.

wrote in message
...

Radio Shack DLX magmount .................... 0db
K-40 .................................................. ....... .8db
Radio Shack 4.5' center load .................. 1.4db
5' Firestik ................................................ 3db
6.5" Hustler top load ............................... 4db
108' Stainless Steel whip ........................ 4.5db
7' Firestik .................................................. . 5db

Of coarse since the time of this test I have found
and measured even better antennas. Of these the
practical ones all use large diameter masting made of
highly conductive material. A large diameter, air spaced
loading coil. This coil is always upwardly located and the
overall antenna height

Damn Tnom, a 102 on a mag mount? You should be whipped. LOL

A homebrew triple magnet 750lbs magmount. Oops, I shouldn't have
mentioned it. Next thing you know Frank will want to borrow it.

ROFLMAO

On Sat, 28 Jan 2006 21:42:48 -0500, wrote:

+On 24 Jan 2006 19:28:09 -0800, wrote:
+
+Im thinking of getting a 102" whip, I dont think I need the spring
+because of where im mounting it. But is it nessesary? Should I get it
+with the whip ?
+
+Here's another antenna test post I dug out of the archives.
+
+********************************************
+
+ I did this test a few years ago (minus the Wilson), at least as best
+I could. The problem is that when swapping the magmounts the
+position might change a little bit. If the position changes a little
+bit then the measured field strength may change a little bit also.
+Seeing how all of these antennas are very close to begin with
+then you have to wonder if the results may be off just a little bit?
+
+Anyway's, I did run the test and attempted to calibrate the results
+in db's . The calibration may be off a little bit, but the order from
+the best to the worst as I measured IS accurate.
+
+Radio Shack DLX magmount .................... 0db
+K-40 .................................................. ....... .8db
+Radio Shack 4.5' center load .................. 1.4db
+5' Firestik ................................................ 3db
+6.5" Hustler top load ............................... 4db
+108' Stainless Steel whip ........................ 4.5db
+7' Firestik .................................................. . 5db
+
+Of coarse since the time of this test I have found
+and measured even better antennas. Of these the
+practical ones all use large diameter masting made of
+highly conductive material. A large diameter, air spaced
+loading coil. This coil is always upwardly located and the
+overall antenna height
******
Were these antennae used as the transmitting or receiving antennae?
If transmitting antennae then what was the receiving antenna and
receiving equiptment. Second unknown is the path loss between the
transmiting antenna and the receiving antenna. Third item what was the
gain(dBi) of the receiving antenna. Without the above data, the above
results meaningless.

james

+Radio Shack DLX magmount .................... 0db
+K-40 .................................................. ....... .8db
+Radio Shack 4.5' center load .................. 1.4db
+5' Firestik ................................................ 3db
+6.5" Hustler top load ............................... 4db
+108' Stainless Steel whip ........................ 4.5db
+7' Firestik .................................................. . 5db

Were these antennae used as the transmitting or receiving antennae?
If transmitting antennae then what was the receiving antenna and
receiving equiptment. Second unknown is the path loss between the
transmiting antenna and the receiving antenna. Third item what was the
gain(dBi) of the receiving antenna. Without the above data, the above
results meaningless.

Who's talking dbi ? I'm not. The reference was the RS deluxe mag
mount. Referenced at 0db

As I explained. The order of best to worst is accurate. Calibrating
the results into db is as explained below. Meaningless? I don't think
so.

This test was done with an in sight very low power remote transmitter
located about 200 yards away. A regular CB was used with low
readings on the S-meter to give me a relative field strength. The
exact S numbers were noted. Then next step was to calibrate the
readings.

The db calculation were computed after taking the same CB and exciting
it with a variable power transmitter to see how the noted S-meter
readings related to power output of the variable transmitter.

On Sun, 29 Jan 2006 19:08:24 -0500, wrote:

+
++Radio Shack DLX magmount .................... 0db
++K-40 .................................................. ....... .8db
++Radio Shack 4.5' center load .................. 1.4db
++5' Firestik ................................................ 3db
++6.5" Hustler top load ............................... 4db
++108' Stainless Steel whip ........................ 4.5db
++7' Firestik .................................................. . 5db
+
+Were these antennae used as the transmitting or receiving antennae?
+If transmitting antennae then what was the receiving antenna and
+receiving equiptment. Second unknown is the path loss between the
+transmiting antenna and the receiving antenna. Third item what was the
+gain(dBi) of the receiving antenna. Without the above data, the above
+results meaningless.
+
+Who's talking dbi ? I'm not. The reference was the RS deluxe mag
+mount. Referenced at 0db
+
+As I explained. The order of best to worst is accurate. Calibrating
+the results into db is as explained below. Meaningless? I don't think
+so.
+
+This test was done with an in sight very low power remote transmitter
+located about 200 yards away. A regular CB was used with low
+readings on the S-meter to give me a relative field strength. The
+exact S numbers were noted. Then next step was to calibrate the
+readings.
+
+The db calculation were computed after taking the same CB and exciting
+it with a variable power transmitter to see how the noted S-meter
+readings related to power output of the variable transmitter.
*******

Sorry I put little faith in S-meter readings. I would prefer a
spectrum analyzer, a preamp and the test antenna to determine gain of
the antenna.

james

+The db calculation were computed after taking the same CB and exciting
+it with a variable power transmitter to see how the noted S-meter
+readings related to power output of the variable transmitter.
*******

Sorry I put little faith in S-meter readings. I would prefer a
spectrum analyzer, a preamp and the test antenna to determine gain of
the antenna.

I'd prefer a Maserati

wrote:

Im thinking of getting a 102" whip, I dont think I need the spring
because of where im mounting it. But is it nessesary? Should I get it
with the whip ?



Hi, been on CB since 1968. If you get the spring the whip tends to
bend back quite a bit
when doing high speeds. I used the spring only once early on. I got
myself a quick connect
and replaced the spring. Its about the same length as the spring. This
way the whip does not bend back nearly as far which is better for
transmission
and reception being it remains mostly vertical. And the quick
disconnect allows you to remove the whip quickly and
put it in your trunk!! Done this for many many years!! I'm very
pleased with it!!
73

Gen. J. O'Neill

On Sun, 29 Jan 2006 12:48:59 -0500, Jack O'Neill
wrote:

wrote:

Im thinking of getting a 102" whip, I dont think I need the spring
because of where im mounting it. But is it nessesary? Should I get it
with the whip ?



Hi, been on CB since 1968. If you get the spring the whip tends to
bend back quite a bit
when doing high speeds. I used the spring only once early on. I got
myself a quick connect
and replaced the spring. Its about the same length as the spring. This
way the whip does not bend back nearly as far which is better for
transmission
and reception being it remains mostly vertical. And the quick
disconnect allows you to remove the whip quickly and
put it in your trunk!! Done this for many many years!! I'm very
pleased with it!!
73

Gen. J. O'Neill

Seeing how you brought up the bending of the antenna..........
Another disadvantage of the 102" ss whip is the gain lost because of
this bending. It is significant.

On Sun, 29 Jan 2006 15:41:35 -0500, wrote in
:

On Sun, 29 Jan 2006 12:48:59 -0500, Jack O'Neill
wrote:

wrote:

Im thinking of getting a 102" whip, I dont think I need the spring
because of where im mounting it. But is it nessesary? Should I get it
with the whip ?



Hi, been on CB since 1968. If you get the spring the whip tends to
bend back quite a bit
when doing high speeds. I used the spring only once early on. I got
myself a quick connect
and replaced the spring. Its about the same length as the spring. This
way the whip does not bend back nearly as far which is better for
transmission
and reception being it remains mostly vertical. And the quick
disconnect allows you to remove the whip quickly and
put it in your trunk!! Done this for many many years!! I'm very
pleased with it!!
73

Gen. J. O'Neill

Seeing how you brought up the bending of the antenna..........
Another disadvantage of the 102" ss whip is the gain lost because of
this bending. It is significant.


Where are your test results showing a "significant" loss of gain with
a wind-bent antenna?









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O
Seeing how you brought up the bending of the antenna..........
Another disadvantage of the 102" ss whip is the gain lost because of
this bending. It is significant.


Where are your test results showing a "significant" loss of gain with
a wind-bent antenna?

Don't even need a test on this one.

1. It can be mathematically calculated. ( I'll let you do that)

2. It looses gain bad enough that you can actually see it and
hear it. Example :

Two vehicles are traveling together down the expressway at 75mph.
One uses a K-40. The other a 102" whip. Both appear to have similar
maximum S-meter readings but the 102 " whips signal fades in and out
The K-40 does some fading but not nearly as deep as the 102".