romirez
Member
Hi folks,
Hoping you can help me identify the most likely culprit to troubleshoot here.
I have an RV-7 that I recently added a NAV radio to. VOR+ILS both work very well (100+ mile reception), but when I transmit on com1 or com2, the nav radio signal degrades significantly, to the point of losing glideslope on ILS approaches - after stopping the transmission everything recovers.
The hardware:
NAV radio: MGL N16 + Vega control head (grounded to common avionics groundplate), Archer wingtip antenna (installed according to instructions, grounded to the wing)
COM1: GTR 200 (grounded to common groundplate), comant CI-121 on top of fuselage
COM2: GTR 20 (grounded to common groundplate), comant CI-122 on the belly
Audio panel: GMA 245
Cabling is all RG400.
Transmitting on both COM1 and COM2 causes this, with COM1 appearing to be somewhat worse.
Any ideas?
Hoping you can help me identify the most likely culprit to troubleshoot here.
I have an RV-7 that I recently added a NAV radio to. VOR+ILS both work very well (100+ mile reception), but when I transmit on com1 or com2, the nav radio signal degrades significantly, to the point of losing glideslope on ILS approaches - after stopping the transmission everything recovers.
The hardware:
NAV radio: MGL N16 + Vega control head (grounded to common avionics groundplate), Archer wingtip antenna (installed according to instructions, grounded to the wing)
COM1: GTR 200 (grounded to common groundplate), comant CI-121 on top of fuselage
COM2: GTR 20 (grounded to common groundplate), comant CI-122 on the belly
Audio panel: GMA 245
Cabling is all RG400.
Transmitting on both COM1 and COM2 causes this, with COM1 appearing to be somewhat worse.
Any ideas?