Hi Will,
> Is it the same thing as you get round laptop power cables?
Yes - but you need to wrap the cable about 3..6 or more times through the
toroid type as seen on notebook power supplies or analog computer monitor
(VGA) cables to create a good RF resistor
Key cause is (among many others) a poor grounding. You only speak of the
antenna extension and the headset. Even if you do not intend to power or
charge the Yaesu from the plane's DC, we suggest making a good mass
connection between the enclosure (mass on the DC connector) and your
aircraft grounding.
Worth a try is grounding the headset connector ground to the aircraft
ground, too.
In case you will wire-up a power supply to the Yaesu, please ensure to
install a voltage and/or current limiter as provided with the matching car
adapter by the supplier.
Hope this helps you fixing your installation.
Regards,
-Kurt.
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Pete Lawless
Sent: Monday, April 16, 2007 8:35 AM
Subject: RE: Europa-List: YAESU Aviator Pilot II
Morning Will
There seem to be two sorts one which is a component and is actually
connected in series with the wire and another that simply wraps around the
outside of the cable those are the bumps on the PC cables (I think). I
would ask Yaesu for more information (make and model number and where in the
set up it goes) I would guess round the headset cable to cut out the stray
hum. Radios are strange things, the one that has always worked most
reliably for me has been my Icom handheld (Now 15 years old) with or without
headset plugged in.
Good luck.
Pete
If it whines when away from the aeroplane you could take to whole setup to
say Radio Shack and try the fix in the shop.
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of William Daniell
Sent: 16 April 2007 01:50
Subject: RE: Europa-List: YAESU Aviator Pilot II
Thanks Pete
The radio is a self contained handheld. It has an adapter for use with
headphones. It works fine without headset but when you use the adapter you
get the whine. The yaesu email help desk said use this ferrite choke thing
(I now know what they mean) but not where to put it.. I am assuming that the
ferrite choke would go on the headset cable?
Is it the same thing as you get round laptop power cables?
Will
_____
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Pete Lawless
Sent: Sunday, April 15, 2007 11:52
Subject: RE: Europa-List: YAESU Aviator Pilot II
Hi Will
A ferrite choke is a coil of wire wound onto a ferrite rod. It has the
effect of passing DC ok but offering a high resistance to AC. If you put it
in the supply line to whatever an Aviator Pilot is it stops the stray AC
getting through and kills the whine.
Regards
Pete
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of William Daniell
Sent: 15 April 2007 17:32
Subject: Europa-List: YAESU Aviator Pilot II
Has anyone "plumbed in" opne of these portables. I think I saw one
attached to a panel but I can't remember where.
Apparently it is not as simple as just connecting the headset and an antenna
extension. You get a strong whine through the headset. I am told by Yaesu
helpdesk that you need a ferrite choke. Not wishing to appear ignorant.but
what the hell is a ferrite choke?
Will
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