[Antennas] Engine Noise on HF Radio

Joe nss at mwt.net
Thu Nov 17 09:04:49 EST 2011


In addition, does the noise be actually a "Noise" where it's sparky in 
sound, and the level of "Sparkyness" changes with the speed of the 
engine, or does it actually have a tone to it. That changes in pitch as 
the rpm of the engine changes.

The Sparkyness is from the plugs and wires,  the tone is from the 
alternator.

Joe WB9SBD

The Original Rolling Ball Clock
Idle Tyme
Idle-Tyme.com
http://www.idle-tyme.com

On 11/15/2011 10:48 PM, Jay AD5PE wrote:
> Does the pitch follow the speed or the engine rpm?
>
> Art Barbetta Jr N8RKA<n8rka at n8rka.us>  wrote:
>
>> I have a Tarhill II screwdriver antenna on my 2008 Focus.
>> When I put my FT-857 in my car I get a whining noise that increases when
>> you accelerate the noise get faster.
>>   What can be done to get rid of the noise..
>>
>> Art N8RKA
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