I have done a few POTA activations... I have a 12Ah LiPo that lasts about 4 hours running 100watts. Heavy usage calling CQ in SSB and FT8
I have an IC-705 and run 10 watts and I have used a 3.5Ah LiPo and ran 4 hours. I have a 9Ah Lipo and ran over 7 hours and still had lots of battery left. 55Ah battery would last for a three day weekend activation.... The math starts with Power you want to use, operating time and it is easy to figure out. One word of advice. You need to plan on a few other things. QRP is easy, and 50 watts in the park will save your battery and you will have a great time doing it.... I also suggest a resonant antenna and staying away from the trees..... WSJT-X time sync in the field (some parks offer WiFi or you can connect to your Cell as a HotSPot, Some do not) .... Laptop Power (I bring a 24000 back up battery to get a 2nd charge) You could use one power source and an inverter to run power to the laptop, but inverters are very inefficient and can create some. noise. I was at a park recently that had AC power available and I brought an extension cord and power strip. Have Fun, Jeff KC5TT On Sat, Sep 4, 2021 at 4:06 PM Mike Lambert via BVARC <[email protected]> wrote: > KJ, > > How many amperes do you need from the battery? > > Mike > KI5MIK > On 9/4/2021 12:25 PM, KJ Anderson via BVARC wrote: > > I want to put a battery (see other thread) and a solar panel together to > be able to run my radio POTA/ARES, but while I can math my way into what I > think I need, I’d like to hear from folks doing it, empirically, to get > feedback on what’s actually worked/didn’t in the field. My math says a > 55AH deep cycle with a 220W solar kit should do really well during the day, > but I’ll still need to curb power at night, assuming a 25% duty cycle. If > I want a 50% duty cycle for FT-8, the numbers (read: costs) aren’t fun to > think about…. > > > > Who’s doing this, and what can you teach me? > > > > *-------------------------------------------------* > > *KJ Anderson* > > 253-380-2636 > > www.linkedin.com/in/scrumnerd > > > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing > [email protected]http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/[email protected]/ > > ________________________________________________ > Brazos Valley Amateur Radio Club > > BVARC mailing list > [email protected] > http://mail.bvarc.org/mailman/listinfo/bvarc_bvarc.org > Publicly available archives are available here: > https://www.mail-archive.com/[email protected]/ >
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