Hi Bill, I agree with your assessment of inverter v. traditional alternator generators in general - the only gens I still have are inverter type.
But for short-term ops in the field, consider a properly-sized deep-cycle battery augmented with a 200-watt solar panel. No noise (RF or AF) or exhaust fumes. The tech for both batteries and solar IS here - and is only getting better. 73, KF5YHP Sent from my iPhone > On Aug 11, 2016, at 12:58 PM, Bill Crowell, N4HPG via BVARC <[email protected]> > wrote: > > This was very interesting. My takeaways: > > 1. The RF noise is still bothersome, even at S1. I’d hate to pipe that into > my headphones for 8 hours. > 2. The dynamic load is an issue that prevents good fuel economy when running > in normal mode. This negates the economy mode. > 3. They did NOT test the effects of RF on the control circuitry when we’re > transmitting. With that 100’ drop cord, we have to ensure that various RF > sources don’t destabilize the CPU in the generator. > > For our purposes, a properly sized, standard generator would be better for > these reasons: > 1. Sinewave output from the alternator - the shaft speed is 3600rpm. > 2. Toleration of dynamic loads. > 3. Immunity from RF from our transmitters. > > Of course, this comes with more weight and lower fuel economy. > > *** > > To deal with the inverter/generator, I would recommend: > 1. A ferro-resonant isolation transformer to deal with cleaning up the power > and mitigating RFI in both directions. > 2. A battery or large capacitor in the 12V leads to the radio for dynamic > loading. > 3. Something like an Astron PSU - because they’re more rugged. > > Still a big price to pay for some fuel efficiency. > > My conclusion is that these units are excellent for static loads like lights > and air conditioners and other RV type uses. We need to be very careful when > using radios with them. > > B > > >> On Aug 11, 2016, at 3:35 AM, Jon Noxon via BVARC <[email protected]> wrote: >> >> From the Elecraft reflector: https://youtu.be/rOH7Ze7wreQ >> >> Enjoy, >> >> Jon KF5TFJ >> _______________________________________________ >> BVARC mailing list >> [email protected] >> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > > Bill Crowell, N4HPG > Pearland, TX > [email protected] > I prefer to live a life of galvanic isolation. > > _______________________________________________ > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
_______________________________________________ BVARC mailing list [email protected] http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org
