Ron,
FWIW... Absolutely no noise problems with my Whelen strobe power
supply (mounted on the baggage bay bulkhead below "D" door). Power
supply is grounded. Strobe HV lines have shields grounded at the
power supply end and strobe shields are connected through any
connector in the link.
Also, I have the LED/Strobe heads on the Europa. The LEDs are VERY
bright! Much brighter than standard incandescent lamps. Everyone who
has seen the Nav lights on the aircraft in the air has commented on
how bright they are.
Now I have a set of Nav/Strobe heads with incandescent lamps that I'll
never use. Was going to put them on my Toot but have changed my
mind. From now on, only LED units go on my aircraft!
Check six,
Bob Borger
Europa Kit #A221 N914XL, XS Mono, Intercooled 914, Airmaster C/S
http://www.europaowners.org/N914XL
Aircraft Flying!
3705 Lynchburg Dr.
Corinth, TX 76208
Home: 940-497-2123
Cel: 817-992-1117
On Feb 17, 2009, at 10:20, rparigor@suffolk.lib.ny.us wrote:
> Hi group
>
> Thx. for the replies about strobe power supply positioning.
>
> Jim:
> "> Mine is on the bottom of the port access panel in the baggage
> bay. I ran
> > irrigation tubing through the wings containing #18 wire for both the
> > strobes and position lights. A I did not want to mount something
> that
> > weighed as much as the strobe controller in the wing."
>
> That's exactly what I did, beautiful installation of my Kuntzleman
> power supply on the starboard baggage bay rib. When I tested, if
> there is an antenna cable (RG-400 or RG-142), radio or antenna
> within 8 feet of power supply, tick, tick, tick. Nothing I tried
> helps. Power supply is grounded. Supply lines are shielded, I tried
> no ground, ground on supply side and ground on power supply side. I
> tried wrapping power supply in 2 layers of aluminium foil figuring
> RFI leaking out of connectors, no joy grounded or un grounded. I
> tried wrapping antenna cable with aluminium foil, grounded and un
> grounded. i tried grounding antenna cable. Nothing works, have to
> turn squelch up where don't get what it is I want.
>
> The only thing that helps is moving power supply at least 8 feet
> away. I hear from a local IA that Whelen is the only powers supply
> he uses because he had noise issues with others.
>
> Kunzleman power supply is pretty small, 10 oz and each one uses ~
> 1.5 amps. I have their combo LED/strobe heads already mounted.
>
> When you test yours, let us know if you have good results.
>
> My experience is pretty much identical to this builder:
> http://home.hiwaay.net/~langford/antennas.html
>
> Ron Parigoris
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