On 13 Feb 2007 01:47:56 GMT, Steveo wrote in
:

Frank Gilliland wrote:
snipper
I
have seen brake failure with as little as 60 watts on VHF-hi (a Ford).

Really? That's whacked. How the hell did you see it?


Happened when I was working at a 2-way shop in Oregon. Since the auto
makers dumped the responsibility of RF compatibility onto the radio
makers, the procedure (as described in the manuals) for installing a
commercial radio into -any- vehicle requires that it be driven and
keyed up with the brakes applied. One failed the test.

Frank Gilliland wrote:
On 13 Feb 2007 01:47:56 GMT, Steveo wrote in
:

Frank Gilliland wrote:
snipper
I
have seen brake failure with as little as 60 watts on VHF-hi (a Ford).

Really? That's whacked. How the hell did you see it?

Happened when I was working at a 2-way shop in Oregon. Since the auto
makers dumped the responsibility of RF compatibility onto the radio
makers, the procedure (as described in the manuals) for installing a
commercial radio into -any- vehicle requires that it be driven and
keyed up with the brakes applied. One failed the test.

Was there fluid in the master cylinder on that one? In other words, could
it have been the brakes were bad to begin with? How many were tested?

--
http://NewsReader.Com/

Steveo wrote:
Frank Gilliland wrote:
One failed the test.

Was there fluid in the master cylinder on that one?

Errr only Fords' are susceptible to RF brake killings? g

--
http://NewsReader.Com/

On 13 Feb 2007 03:38:06 GMT, Steveo wrote in
:

Steveo wrote:
Frank Gilliland wrote:
One failed the test.

Was there fluid in the master cylinder on that one?


Yep. Mechanic checked it out completely. It was the radio.


Errr only Fords' are susceptible to RF brake killings? g


Beats me. I would suppose it can happen with other makes since the
manuals (Motorola, GE, Uniden, etc.) say to test -all- vehicles. But I
have also seen GM cars/trucks get screwed up -without- a radio due to
RFI from the vehicle's own harness wreaking havoc on the oxygen sensor
wire. I rewire all O2 wires with teflon coax just to be sure. And I
don't think I would do fiberglass hood & fenders without wrapping the
entire harness in some sort of shielding.

These modern electrical system are proving to be just too fragile for
me. Over the winter I've been building up a 4.3 with a Q-jet for the
S10, and as soon as spring gets here I'm going to drop it in and gut
the truck of all that computer crap. You can color me retro, but don't
color me stranded on the side of the road because some overpriced
sensor got plugged with a little road dust!

Frank Gilliland wrote:
On 13 Feb 2007 03:38:06 GMT, Steveo wrote in
:

Steveo wrote:
Frank Gilliland wrote:
One failed the test.

Was there fluid in the master cylinder on that one?

Yep. Mechanic checked it out completely. It was the radio.

Errr only Fords' are susceptible to RF brake killings? g

Beats me. I would suppose it can happen with other makes since the
manuals

50 watt break killers. Must be the pacific ocean spray enhancing the
footprint.

--
http://NewsReader.Com/

"Steveo" wrote...

50 watt break killers.

A good businessman would see an opportunity there.
Do you ever bet on the outcome of motor races?


:~)
Peter.

On 13 Feb 2007 03:38:06 GMT, Steveo wrote:

+++Steveo wrote:
+++ Frank Gilliland wrote:
+++ One failed the test.
+++
+++ Was there fluid in the master cylinder on that one?
+++
+++Errr only Fords' are susceptible to RF brake killings? g
***********

No Dodge Ram pickup trtrucks are also. It states in my owners manual
to be careful in installing any RF transmitters such as to not
interfere with the ABS brakes. Chrysler reccomends less than 100watts
but is not specific on an exact wattage that can cause failure of the
ABS.

This is in my opinion a move to protect themselves from lawsuits if a
failure was induced from RF. They can say "We told you so"

Back in the 70's when Eaton came out with ABS for tractor/trailer
setups they did have some ABS failures due to high RF field
environments. Mostly lockups were the isuses. In todays market it is
easier for the auto makers to put the emphasis on the owner to not u
se highpowered RF transmitters in the vehicles, than it is to increase
cost to fix a potential problem.


james