---------------------------------------------------------- RV9-List Digest Archive --- Total Messages Posted Sun 05/18/03: 1 ---------------------------------------------------------- Today's Message Index: ---------------------- 1. 09:03 AM - Strobe noise in the radio (Leland) ________________________________ Message 1 _____________________________________ Time: 09:03:03 AM PST US From: Leland Subject: RV9-List: Strobe noise in the radio --> RV9-List message posted by: Leland This week I fired up my Nova X-PAK strobe along with an SL40 Comm radio. There was a strong sound of the strobe power supply recharging its capacitors coming through the radio. One problem was the strobe power supply was not properly grounded. The power supply base is well anodized and I had to sandpaper off the anodize around the ground points. Anodize forms an excellent electrical resistance. Also, I had connected the strobe cable shield to the "black" wire coming out of the strobe connector, but it turns out that this wire is some 100 ohms off ground. Grounding the shield to the aircraft frame eliminated all but the faintest sound in the headsets. Leland in Pleasanton Finishing a second set of canopy side skirts (somebody else on this list suggested getting a near-perfect fit on the canopy frame, and I second that suggestion before fabricating the skirts)