TT-247 and 102 whip for mobile antenna ? testing
Yesterday I bought the whip and put it on my existing ball mount on
the back left corner of my van. I still have the coax running to it
so there is about 20 feet of RG-58 (RadioShack brand) running from the
antenna to the tuner.
My preliminary results weren't good. It tunes all ham bands from 6
thru 17 easily. 20 starts getting finicky and the bands below seem to
cause arcing.
On the receive side, I am able to receive much better with the CB whip
than with either the 40 or 20 meter AS antennas on bands other than
what the AS antennas are designed for.
On transmit, things aren't so well. On 75 meters, I was able to hear
one person acknowledge that there was a mobile calling. I heard no
other response with any other band. Mind you, I was doing this from
just about sunset until about 11 PM with a long break for supper and a
short shopping trip. This wasn't the ideal time to test the antenna
for any band other than 40 and 80.
I heard some activity on 60 but no one responded to my call.
Today, if I don't get called into work, I plan to cut the wire next to
the antenna mount and install an SO-239 so I can wire the tuner
directly to the antenna or connect the coax to run to the front of the
van where I have the radio mounted.
I will test the antenna and try to compare it to the 40 and 20 meter
as antennas.
Just for kicks and giggles, I stacked the two antenna bases for 20 and
40 meters and added the steel whip to the top of the combo (that's
about 12 feet tall plus the height on the van.) The results weren't
good. The steel whip was too heavy and caused the antenna to bow to
the ground. I will try them today with and without the stinger to see
if that is a better combination than just the one band antenna. hmm,
20 + 40, that's 60 meters, right? lol.
It's 9 am here in Charlotte. I am going to read my email and go
experiment some more.
73 for now.
--
73 for now
Buck
N4PGW
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