On Monday 17 July 2006 at 0118 Jim (AL7FS) wrote ...
What is the advantage of the G Rev over the D Rev? Asked another way, what
is the difference between the D and G? There had to be a reason for the
redesign.
I have D Rev and have not yet installed it. I would like to know if there
is any advantage to paying the $9.00 for the G Rev.
___
Hi Jim,
If you have a fully loaded K2 and only purchased our headers in case you
ever needed to remove an option, then there's no need to upgraded. On the
other hand, if you have a bare K2 and plan to make it Plug Play Ready,
then rev. G is something to consider since the headers will be installed
permanently.
--- - - - ---
This redesign was initially undertaken to address RF concerns which
recently kept one new K2 builder (a retired RF Engineer) from using our
Plug Play Ready assembly approach. In addressing this issue we added
ground planes, re-routed the trace that replaces RF-W1, and shortened the
signal paths on the UN-KNB2.
We don't have the instruments necessary to determine whether there's a
measurable improvement between rev. D and rev. G. If there were, it would
likely only affect the two headers at the back of the RF board since they
carry the un-amplified received signal.
There is also a mechanical improvement in rev. G with the addition of an
UN-KNB2 mounting hole. This might be an advantage if you operate
portable/mobile.
--- - - - ---
There are some subtle changes that only affect assembly. Rev. G has
fewer break-away tabs, a bottom silkscreen, and a built-in SIP connector
separation aid.
For our European customers, the rev. G UN-K60XV has a center ground pad
for the Murata ceramic filter 40m narrow BPF mod.
Lastly, there are a few things that we just wanted to improve upon in
rev. D. All of the text is now right-side up, and the UN-K60XV no longer
blocks the RF-L4 (80m BPF) adjustment slug.
73,
Gary, KI4GGX
K2 #4067
___
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