In This Issue
Anttron 305 Super Base Antenna
Everyone is familiar with the A-99, formerly called the Antron 99. Well, the original partners split up and the
Antron name can no longer be used by Solarcon. You'll notice that the Anttron people have added another
"t" to the name. Some of you might have been around long enough to have seen or heard about the
partner split up at Browning Laboratory. It brought the birth of Tram. Instead of one ultimate radio, we were
blessed with two Rolls Royce of radios. Each one would try to out do the other with their next model. It
gave us some wonderful radios back in the old days. Something good came from the Browning split, and
something good has been coming from the Antron split. Anttron has made -the highest quality low cost
fiberglass whip antennas for a long time. I was never afraid to recommend them to truckers looking for
something that wouldn't break their wallet. They also manufacture the 21K high power mobile antenna. It
handles over 20,000 Watts of power.
I haven't tested the 305 yet but I've seen the one that will be going up at my store in Everett. The base
section is heavier than the A-99. The quality seems to be much better too. The antenna comes with two U-
clamps for mounting to a standard size mast. The KEMTRON™ radials are approximately 6 inches long
and made of aluminum. Below see the list of data supplied by Anttron.
ELECTRICAL DATA
Omni-directional Factory Tuned 27 - 28 MHz
Polarization - Vertical SO-239 Connection
0.64 Wavelength All Elements Active
Power - 2500 Watts PEP Electrically Isolated
V.C.T.™ - Sleeve Tuning Impedance - 50 Ohms Nominal
Kemstar™ Radials To Broaden Bandwidth SWR. - 1.5:1 Or Less Across CB Band
Gain - 10.35 dBi/QWM (Same Test Method For A-99)
CONSTRUCTION DATA
1 1/4" O.D. Fiberglass Heavy Duty Bottom Section 3 Kemstar™ Aluminum Radials
3/4" O.D. Fiberglass Mid Section Overall length - 18 Ft.
5/16" O.D. Fiberglass Top Section 1 1/2" Mounting U-Bolts Supplied
Independent testing was done by RF Testing, the same firm that tested the A-99 in 1985. They have
received testimonials from CB and Ham operators. These comparisons, although not done under strict
scientific conditions, show a 3 to 4 dB increase from the Ham community when compared to an A-99 in the
same location. The CB community reported a 4 to 7 dB increase over the A-99 in the same location.
Although these figures were not collected under laboratory test conditions, -the independent testing does
show a 10.35 dBi gain for the 305 and a 9.9 dBi gain for the A-99. All leading to the conclusion that
updating to an Anttron 305 will result in increased gain.
Other reports reveal that the antenna will tune from 40 to 6 Meters. Note the tuner must be designed to
work on 6 Meters to tune that band. Also the E.R.P. (effective radiated power) was low on 40 Meters even
though it tuned. You'll notice that the specification sheet only claims 20 - 6 Meter coverage.
Gain is a very important consideration when selecting an antenna. There are other factors that if not
equally important are right up there near the top of the importance scale. Noise immunity is important. Gain
is all well and good, if you can't receive due to noise interfering with your reception you've gained nothing.
Noise reduction was a high priority in the design of the 305 antenna. Initial testing by Anttron indicated they
did their job and are backed up by these testimonials.
Another consideration in selecting an antenna is its ability to maintain a good match under adverse
weather. Snow, Ice and rain can raise havoc with an antenna's match. Snow and ice are the worse of the
three because you must wait for it to melt and then dry off before your match returns to normal. This was a
terrible problem with the Shakespeare PogoStick. It's exposed coil would fill in with snow and ice making
the match go off the scale. The A-99 has this problem to a reduced amount. The tuning rings- affect the
inductance of the antenna and are also exposed to the weather. The 305 sleeve is exposed to the weather
but the folks at Anttron say the sleeve changes the capacitance of the tuning section and this isn't effected
by weather.
Everyone wants their antenna to stay up as
long as possible. I don't know too many
people that enjoy heights and antenna
installation work. This all leads up to the
heavy duty bottom section of the 305
antenna. In high winds I've noticed the A-99
sway quite a bit. I have lost a top section of
an A-99 and it's possible that this whipping
action was the cause. I've also encountered
customers that have had similar or worse
problems including the bottom section
snapping just above the adjusting rings.
Shakespeare regained a few Super Big Stick
customers for this reason. One bad antenna
experience and customers suddenly feel that
gain isn't quite that important anymore.
I can't wait to see or should I say hear how
the New Anttron 305 works at the new store.
By the way, they are available from Bob's
CB. I purchased some for stock when I
decided to go with this one for myself. My
decision was base on a combination of
specifications and knowing the owner of
Anttron for a number of years. He's never
steered me wrong. ©
CBWI
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AUGUST
VOLUME 1
ISSUE 4