John AE5X
(Also shown: Iniu 20AH power bank, KWS-1902C USB-C power meter) 13 May: Updated info, including notes from its designer, Manuel HB9DQM. I received my KXUSBC2 in the mail today and wasted no time installing it into my KX2.No soldering or de-soldering was required. Other KX2's may or may not require...
John AE5X
The manual for the KX2's internal battery charger (KXIBC2) allows for a variety of input voltages, up to a maximum of 15V, to be used to charge the radio's 2.6AH lithium battery. The manual also mentions that lower voltages (down to 11V) can also be used although the battery will not be fully...
John AE5X
I've had a hankering to build something lately and happened across a relatively new offering from the 4 States QRP Group: the Hilltopper Tallboy, a monoband QRP CW transceiver kit.Available for 15 to 40 meters (and maybe 60m soon), I ordered a 20m version. It arrived 5 or 6 days later and I...
John AE5X
Receiver sensitivity of the QRP Labs QMX+ is currently being discussed on the QRP Labs forum with at least one member of the group is disappointed that the MDS value of the QMX+ isn't published.With the QMX+ being a kit, any published value of MDS would have to be a range of fluid values since...
John AE5X
The Crystal River area of west-central Florida contains several POTA sites within a small area. Crystal River Preserve State Park is my favorite for activations due to the covered picnic table and proximity to manatee-rich waterways.Kayaks can be rented at the park but my purpose today was to...
John AE5X
A search of the mythical Ideal QRP Travel Rig For Vibration-Rich Environments has me, once again, pondering what's out there and coming to the same old conclusion:That the Elecraft KX2 - manyyears (yes, one word) after its introduction - still has no peer. Eight years old now - a virtual...