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ZL1ABS > C15 11.03.08 04:31l 27 Lines 884 Bytes #999 (0) @ WW
BID : D91541ZL1ABS
Read: GUEST DL9MDI
Subj: Re:A Weighty Problem
Path: DB0FHN<DB0FOR<DB0MRW<DK0WUE<7M3TJZ<ZL2BAU<ZL1AB
Sent: 080311/0319Z @:ZL1AB.#06.NZL.OC #:11015 [AUCKLAND] FBB7.00i $:D91541ZL1AB
From: ZL1ABS@ZL1AB.#06.NZL.OC
To : C15@WW
Hi Ray vk2tv
"In larger 4WD's and trucks, there is usually a severe lack of bonding,
which facilitates radiation from individual components. The engine, drive
train and exhaust system is mounted on rubber blocks with plenty of
opportunity for radiation. The cabin is also mounted on rubber blocks.
Bonding around rubber mounting points can make a huge difference to
radiated noise levels."
Yes, in both the Ford Laser cars I've owned, I found it necessary to
ground the bonnet with braid (around the hinge area) as too much noise was
received with the engine running. The aerial mount was a "Z" bracket on
the side of the engine bay. With the bonnet grounded, noise from inside
the engine bay is somewhat shielded from being picked up by the nearby
VHF/UHF aerial.
73 - Michael, ZL1ABS @ ZL1AB
Message timed: 15:18 on 2008-Mar-11
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