[600MRG] New K3 firmware with 10 and 18 MHz XVTR IF selections
Eric NO3M
no3m at no3m.net
Sun Jan 26 21:03:50 CST 2014
There seem to be some peculiarities with using a transverter IF vs.
CONFIG:KXV3=TEST.
One thing I've noticed is that when operating dual RX (not diversity),
the main and sub-RX both use the antenna attached to the XVTR IN port
when setup as a transverter band. In CONFIG:KXV3=TEST mode, running
dual RX routes XVTR IN to the main receiver, and the RX2 port (I have it
setup as AUX BNC) to the sub-RX. Not sure if this is intended behavior
or not?
In diversity mode, either as a transverter band or CONFIG:KXV3=TEST, the
antenna routing is consistent with what would be expected, XVTR IN going
to the main RX and AUX RF (ie. BNC) going to sub-RX.
In CONFIG:KXV3=TEST mode, the KBPF3 is used on either receiver if it is
installed and enabled and the IF is outside of the ham-band BPF preset
edges. However, in transverter mode, the KBPF3 is not used in the main
RX, but appears to be engaged with the sub-RX? If in transverter mode
and running dual RX or diversity, is it possible to force the use of the
IF band BPF instead of the KBPF3 in the sub-RX, so as to be consistent
with the way the main RX filtering is handled?
In general, things are working in transverter mode (10 MHz IF), just
some things per aboev that I wasn't expecting from having used
CONFIG:KXV3=TEST over the last year or so.
73 Eric NO3M / WG2XJM
On 01/26/2014 06:32 PM, Matt Zilmer wrote:
> Hi Wayne,
>
> I have 4.81 working with two 10 MHz-IF transverters:
> - 100 to 520 KHz receiving converter
> - 420 to 421 MHz transverter
>
> Both are homebrew, really old, and operate at 1 mW levels. I can copy
> some of the local CW activity on 420, but only two signals so far.
> Power out looks good: 8-10W. The LF converter is receiving local sig
> gen signals, but I haven't heard anything else on the air except some
> local household gudge. LF is really a night time band anyway.
>
> Can't tell you about the 18 MHz IF. No xvtrs for that IF here.
>
> 73,
> matt
>
>
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