Henning:
I would not install the internal battery option. It requires that you
install a smaller speaker and there is always the danger of the batteries
leaking and damaging the board in the K1. It is very easy to make up a
small battery pack and a short cable to connect it to the radio.
Additionally you have to remove the batteries to charge them if you use
ni-cads. I use a small 12volt 2.2 amp gel cell which will operate the K1 for
most of a weekend. One other thing is that the option provides for only
eight AA cells and they will only produce 12.0Volts at maximum voltage when
using standard AA, only 10.8 Volts when using nic-cads, and the Gel Cell
will provide about 13.8 Volts at maximum. The output power of the K1 is
directly proportional to the input voltage supply. I installed the internal
battery in my K2 and later removed it because of the danger of the leaking
battery and the fact that it made the K2 much heavier.
I would not install the extended coverage in the VFO because the tuning
becomes very touchy. One rotation of the knob causes a much greater change
in frequency. In the 80KHz setting you have about 8KHz per revolution of
the tuning knob and in the 180KHz setting it is 18KHz per revolution.
I love the backlight option and highly recommend it to you. It is very easy
to install and makes the K1 much nicer when operating at night.
Please understand these are my personal observations and preferences. You
may have other reasons for making the changes.
Jim Younce K4ZM
K2 SN:18
K2 Field Tester
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