ngxflyer213
I'm New Here
I've installed an VAL COM 2000 as #1VHF with an ICOM IC A200 as #2VHF, with a PMA500EX audio panel in a RV6A.
My problem is I can not recieve even the local ATIS on either VAL and ICOM, unless the squelch is tuned off, and they are connected to the Comant CI-122 mount on the left hand side of the aircraft bottom just aft of the firewall. Both radio recieve normal when their coax's are connected to the Comant antenna on the right side.
Replaced the left antenna and same problem.
I mounted the antenna to 10x18 peice of aluminum and both radio's recieve ok when they are connected this way, but if I touch the aluminum to any part of the aircraft skin the reception is lost
Both antenna coax's to skin of acft is .1 ohms
A VWSR check shows the forward power about 7-10 watts and the relected power less than 1.
What would cause the antenna to loose reception when I touch the aluminum plate the the aircraft ? If I need to install a filter why is the antenna on the right side not affected?
My problem is I can not recieve even the local ATIS on either VAL and ICOM, unless the squelch is tuned off, and they are connected to the Comant CI-122 mount on the left hand side of the aircraft bottom just aft of the firewall. Both radio recieve normal when their coax's are connected to the Comant antenna on the right side.
Replaced the left antenna and same problem.
I mounted the antenna to 10x18 peice of aluminum and both radio's recieve ok when they are connected this way, but if I touch the aluminum to any part of the aircraft skin the reception is lost
Both antenna coax's to skin of acft is .1 ohms
A VWSR check shows the forward power about 7-10 watts and the relected power less than 1.
What would cause the antenna to loose reception when I touch the aluminum plate the the aircraft ? If I need to install a filter why is the antenna on the right side not affected?