[TenTec]dreaming about a 100 w. mobile rig

[Paul Henning]

You got that right about the ignition noise. My present pickup truck is a
2003 GMC DuraMax Diesel. This truck exhibits the worst "ignition" noise I
have ever experienced. Worse yet is the fact that no one I have talked to
has found a cure for the problem. Both the Ford PowerStroke and GMC DuraMax
diesels have the same problem with the common rail injection system. The
injector solenoids are actually frequency and pulse width modulated to
control the frequency and duration of the injected fuel charge. On the plus
side great fuel economy and throttle response very similar to a gas engine
and gobs of pulling power. If you are going to get one of these beasts you
had better get the rig with the best DSP noise blanker and DSP noise
suppression system available. The people exhibiting GMC products at Dayton
when asked about this problem said "So?"
 

Paul N. Henning
K9PH
Director of Research and Development
Amtelco
4800 Curtin Drive
McFarland, Wisconsin 53558
www.amtelco.com
paul at amtelco.com
(608)838-4194


-----Original Message-----
From: Curtis Rossow [mailto:curtisa%surfbest.net at pop.surfbest.net] 
Sent: Wednesday, August 04, 2004 3:04 PM
To: tentec at contesting.com
Subject: Re: [TenTec]dreaming about a 100 w. mobile rig

Your comment is not always correct. Many modern high pressure diesel 
injections systems are using high voltage solenoids to control the 
injectors. These systems can have noise problems that are just as bad as 
ignition systems. What you reported is always true with the old style 
mechanical injectors.

Check for the injection type before you buy a diesel.

Curt NU7R

On Wed, 4 Aug 2004 19:32:53 -0700, NJ0IP <Rick at dj0ip.de> wrote:

> If you are serious about mobile operations, buy a car with a diesel 
> engine.
> You won't have any problem with ignition noise.
>
> 73
> Rick
>
> -----Original Message-----
> From: tentec-bounces at contesting.com
> [mailto:tentec-bounces at contesting.com]On Behalf Of Doug Lefever
> Sent: Tuesday, August 03, 2004 3:13 PM
> To: tentec at contesting.com
> Subject: RE: [TenTec]dreaming about a 100 w. mobile rig
>
>
> My mobile HF operation (40m) is more limited by power line noise ruining 
> my
> reception than by only developing 100 watts on transmit. A 100 w Ten Tec
> with detachable control head, 500 Hz filter and Noise Blanker ( for 
> ignition
> noise) might put another IC706 on the used market.
>
> K3QS
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