so ive been putting together a go-kit for emcomm and general portable ops and im running into some decisions i cant quite figure out on my own. right now im mostly running HF with an IC-7300 and a buddistick which works okay but i feel like im leaving a lot on the table especially for field day type stuff or actual emergency activations.

the antenna situation is manageable but the power thing is where it gets complicated. i have a 100ah lifepo4 battery that handles the radio fine for receive-heavy ops but the moment im doing any serious transmitting on 100w it drains faster than id like, especially on a multi-hour deployment. ive been looking at generators — specifically the honda eu2200i — but honestly i dont know if thats overkill or if i should just go with a bigger solar panel setup and a second battery. the weight tradeoff is real because im sometimes hauling this stuff on foot to a site.

also my current antenna situation for 40m is a linked dipole thrown up in whatever tree i can find and while it works im wondering if an EFHW would be easier to deploy in a hurry. anybody done a comparison between the two in actual field conditions not just on a picnic table in their backyard

the generator vs solar question really comes down to what kind of deployments you're doing. if you're stationary for 12+ hours in a known location with decent sun the solar route makes a lot of sense, especially paired with a second lifepo4. but if you're going somewhere shaded or doing night ops or need to be ready regardless of conditions, the eu2200i is honestly hard to beat. it's quiet, fuel efficient, and can run your radio plus charge the battery at the same time. i've used one at field day for two years now and it just works. the weight is around 47 lbs so yeah it's not a backpack thing but if you're vehicle portable it's a no-brainer.

on the antenna question — EFHW all day for fast deployment. the linked dipole is more efficient in my experience and gives you cleaner patterns but when youre throwing something up in 10 minutes in the dark or in bad weather the EFHW with a 9:1 unun wins on simplicity. just make sure your tuner can handle the impedance on the non-resonant bands because it gets weird.

yeah the 7300 on 100w will chew through a 100ah battery quicker than people expect especially if duty cycle is high like on digital modes or just long overs on phone. rough rule of thumb i use is around 20-22A on transmit at 100w so if youre at say 30% duty cycle over an hour youre pulling maybe 6-7ah just on transmit plus baseline receive current. adds up.

one thing nobody talks about enough in these setups is keeping the battery topped while youre running, not just starting full. a small 200-300w solar panel feeding a decent MPPT controller can keep pace with moderate operating even if it doesnt fully cover 100w transmit. something like a renogy 200w panel folds down okay for transport. that combo might actually be lighter and more flexible than hauling a generator unless you really need the sustained high power.

i run an EFHW myself for portable, 49:1 wound on an FT240-43 core, works great from 40 through 10. does fine on 80 with a tuner but gets a bit lossy. the linked dipole is probably a bit better on 40 specifically but the EFHW is just so much faster to get up and honestly for emcomm speed of deployment matters more than squeezing out an extra db.