>>> Pretty trashy. <<< Gary, what you are hearing coming from those semi is the "Trashy" signal from a Inverter with a Modified Sine Wave. A lot of us use Laptops, TV and other gadgets, that require an inverter in our trucks. These inverters are left running as a constant power source for mainly the Laptop ( Laptop is not in use when driving ) while going down the road. To the average man in the street, Pure Sine or Modified Sine inverter is of little importance and cost is what attracts the average person. I am yet to find a Pure Sine Inverter for sale in any of these Truck Stop, or even some of the Big stores such as Best Buy, Sears or even Walmart. They can be had, but one has to special order them.
((((73)))) Milverton / W9MMS. On Sunday, January 12, 2014 3:36 PM, AG0N-3055 <[email protected]> wrote: On Sun, 12 Jan 2014 14:35:46 -0700, Gary McDuffie <[email protected]> >wrote: > >On Sun, 12 Jan 2014 20:53:01 +0000 (UTC), [email protected] wrote: > >> Commercial vehicles, in fact almost all modern over-the-road vehicles, emit >> all kinds of RF noise. OEM's primary noise concerns relate to broadcast >> bands, and they're not really concerned about anything else. Believe me, as >> I spend a couple a days a month in Detroit OEM's EMC chambers. > >Every time I pass a semi on the highway, I can hear junk coming from the >engine computer, or something, on VHF. It does have a carrier and isn't >just injectors. That's an additional noise. It doesn't matter what >repeater freq I'm monitoring, squelch is open from just about the cab >door until I'm clear of his bumper. Pretty trashy. I don't know how >some of these truckers run VHF gears in them. > >Gary >-- >-- >http://ag0n.net >3055: http://ag0n.net/irlp/3055 >NodeOp Help Page: http://ag0n.net/irlp >______________________________________________________________ >Elecraft mailing list >Home: http://mailman.qth.net/mailman/listinfo/elecraft >Help: http://mailman.qth.net/mmfaq.htm >Post: mailto:[email protected] > >This list hosted by: http://www.qsl.net >Please help support this email list: http://www.qsl.net/donate.html > > > ______________________________________________________________ Elecraft mailing list Home: http://mailman.qth.net/mailman/listinfo/elecraft Help: http://mailman.qth.net/mmfaq.htm Post: mailto:[email protected] This list hosted by: http://www.qsl.net Please help support this email list: http://www.qsl.net/donate.html
