Ah, Bill, did you participate with BVARC in this year's FD? How many rigs did we hang off the big brother to one of these generators? FD ops are inherently compromised by factors greater than what you're discussing so…
From: BVARC [mailto:[email protected]] On Behalf Of Bill Crowell, N4HPG via BVARC Sent: Thursday, August 11, 2016 12:58 To: BRAZOS VALLEY AMATEUR RADIO CLUB <[email protected]> Cc: Bill Crowell, N4HPG <[email protected]> Subject: Re: [BVARC] Interesting take on FD generators 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] <mailto:[email protected]> > wrote: >From the Elecraft reflector: https://youtu.be/rOH7Ze7wreQ Enjoy, Jon KF5TFJ _______________________________________________ BVARC mailing list [email protected] <mailto:[email protected]> http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org Bill Crowell, N4HPG Pearland, TX <mailto:[email protected]> [email protected] I prefer to live a life of galvanic isolation.
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