Hi

I installed a NOS dual band (2m/70cm) thru glass antenna on my Toyota
Highlander today. This a Radio Shack antenna that was carried in the stores
about two years ago.

I made sure to mount on glass away from defroster lines, no metal film sun
screen, and away from major metal. Using my MFJ analyzer, the best SWR on
two meters is 5.9 - 6.1, SWR on 70 cm is a 2.0 - 2.2. The interior
interface block has a trimmer cap that is working - SWR is affected but will
not improve beyond the cited numbers..

I tried sweeping thru a board range of frequencies in the 2 meter band and
cannot find a resonant hotspot.

The RS package indicates that the antenna should be 2.0 or less thru the
bands with a VSWR around 1.1 at 146.00 and 445.00 MHz.

Any ideas what may be the problem and/or what I might check.

BTW: I checked other antennas with the same analyzer and they read
correctly.

Thanks in advance for your consideration.

Ed

In the olden days that antenna required a stub inside your vehicle.
Memory may fail me but if I recall correctly it was about 7 inches long
and attached to the window coupling inside the vehicle.

Do you have such a setup?

Ed Laughery wrote:

Hi

I installed a NOS dual band (2m/70cm) thru glass antenna on my Toyota
Highlander today. This a Radio Shack antenna that was carried in the stores
about two years ago.

I made sure to mount on glass away from defroster lines, no metal film sun
screen, and away from major metal. Using my MFJ analyzer, the best SWR on
two meters is 5.9 - 6.1, SWR on 70 cm is a 2.0 - 2.2. The interior
interface block has a trimmer cap that is working - SWR is affected but will
not improve beyond the cited numbers..

I tried sweeping thru a board range of frequencies in the 2 meter band and
cannot find a resonant hotspot.

The RS package indicates that the antenna should be 2.0 or less thru the
bands with a VSWR around 1.1 at 146.00 and 445.00 MHz.

Any ideas what may be the problem and/or what I might check.

BTW: I checked other antennas with the same analyzer and they read
correctly.

Thanks in advance for your consideration.

Ed