The first two TC70-10 ATV trancsceivers have been received and testing
is ongoing. We have bought these transceivers for ourselves and for
The first pass test results:
Jim and I have are able to have almost perfect copy between our two home places
that are about 12 miles apart. I am using a 6 ft dual band base vertical
up at about 40 feet, hung off the side of the tower. Jim is using a
vertical beam. Gary was able to
receive us both with good pictures using his down converter.
The two frequencies that we purchased:
439.25 Cable Channel 60
434.00 Cable Channel 59
These were chosen to stay from the two channels used by Dallas
and Ft. Worth (57,58)
We get about the same range, but with
not as good a picture between his mobile installion and my base installation.
The vertical here definitely shows a pattern bias, probably due to the
We plan on re-installing the base antenna here to get better height and clearance. There
will also be an installation of lower loss coax (4XL-8). A new antenna
(UVS-300 Dual Band Base) will also be installed here. This antenna will
be mounted on the top of the mast. This will put it up about 10 feet higher.
This antenna is 17 ft long instead of 6 foot, now giving a 11.7 gain
over a 1/4 wave.
Also plan to repeating some of the same tests from the Dorm location.
If the results of further testing prove out the concept, a frequency
will be selected and a transmitter will be ordered for the repeater
Don Mathis KB5YAM 7/18/99