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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