I have used my KX3-KXPA100 combo off and on in many parks over the years. I usually run CW and SBB about 40-50 watts and FT8 about 10 watts. I run the two units, a small 12v fan to cool the amp in the Texas heat and 12v-5v converter for my phone from a homebrew Powerpole distribution box powered by a single Bienno 1220 20AH battery. With this configuration I get about 6 hours of service. I have a 60-watt converter in the box to power my MacBook Air via USB-C, and if used, lowers the time to less than 5 hours. Another factor is the amount of time running FT8. It’s duty cycle is very power consuming.
Terry - KG5OWB > > ------------------------------ > > Message: 6 > Date: Tue, 8 Jul 2025 01:59:42 +0000 (UTC) > From: mjrosen <[email protected]> > To: <[email protected]> > Subject: [Elecraft] KXP-100/KX-3 integration > Message-ID: <[email protected]> > Content-Type: text/plain; charset=UTF-8 > > I have the?KX-3. Considering adding the 100W amplifier which will only be > used in the field. Not SOTA or hiking, car trips for POTA and, vacation use. > I have a 20AH Bioenno battery that more than adequately powers KX-3 at 10-15W > for QRP activations. I've considered 2 options: 1. Geta a higher capacity > battery and run both radio and amp from one battery (think the 20AH will > do?)?via the parallel power pole connection on the amp or 2. Just getting a > separate battery for the amp. what are other folks' set ups? I seldom?on the > air for more than 4 hours as the family/ spouse?looses patience. Thanks, Marc > KM7AZ > > > Sent from Yahoo Mail > > > ------------------------------ > ______________________________________________________________ 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 Message delivered to [email protected]
