schomburg
Filing Flight Plan
- Joined
- Mar 18, 2005
- Messages
- 17
- Location
- Hillsboro, Oregon
- Display Name
Display name:
Dick Schomburg
We are considering the addition of an "extra" comm antenna in a 182P, cabled only to a BNC coaxial connector on the instrument panel, to get improved comm performance from a backup handheld radio. There is a choice of rooftop or belly mounting. The belly-mount option seems to have these advantages:
[1] Possibly simpler installation, since headliner removal and windshield-post 'cable-snaking' are not involved.
[2] The antenna-pattern main lobes would ne 'out-and-down', instead of 'out-and-up' as for a rooftop location, which may be a benefit with a low-transmit-power handheld.
[3] Ice accumulation is less likely, due to engine cooling airflow. (Not that we should be there anyway!)
A belly antenna will obviously gather some oil and grime, and it will need careful placement to avoid runway-scraping.
Any other thoughts on this?
Dick Schomburg
Hillsboro, Oregon
[1] Possibly simpler installation, since headliner removal and windshield-post 'cable-snaking' are not involved.
[2] The antenna-pattern main lobes would ne 'out-and-down', instead of 'out-and-up' as for a rooftop location, which may be a benefit with a low-transmit-power handheld.
[3] Ice accumulation is less likely, due to engine cooling airflow. (Not that we should be there anyway!)
A belly antenna will obviously gather some oil and grime, and it will need careful placement to avoid runway-scraping.
Any other thoughts on this?
Dick Schomburg
Hillsboro, Oregon