Hi Bob,
Thanks again for your quick response, don't know if you're part of the
Elecraft team, if yes then congrats for that, excellent products with
like everywhere some deficiencies to be corrected.
One of these into your XVxxx transverters are the local oscillators
which these days are out of scope of the actual technologies, specially
due the digital modulations requiring much more stability than a single
XTAL (even equipped with a heater).
I'm going to replace the Xtal oscillator of my XV144 with a clean 116MHZ
PLL synced 10MHZ, place a small smd PAT-2+ or 3+ (2 or 3db depending of
my stock) pad behind the mixer LO input as I'm not sure the 50Z
adaptation is perfect, and adjust the LO level at its maximum between 17
to 20dbm according the mixer datasheet to increase the IP3 to the max
possible with this ADEX-10H mixer.
I know these transverters have been designed many years ago for the k2
line, may be now it's time to revamp them a bit with some new
technologies to improve their performances at a level of some other
competitive products.
For me the main advantage of these transverters is the
"interfacing/switching management" within the k3 line and the nice
packaging within the line but the RF performances are becoming a bit
obsolete.
Best 73's
Pierre-Francois, F5BQP
Le 05/07/2015 07:20, Robert Friess a écrit :
Rev 1.6E is the latest firmware.
73,
Bob, N6CM
On Sat, Jul 4, 2015 at 10:03 PM, Pierre-François (f5bqp_pfm)
<pfmo...@wanadoo.fr <mailto:pfmo...@wanadoo.fr>> wrote:
Hi the Group,
What is the latest firmware revision of the processor (PIC
16F872/1 SP) which is located on the front board of the XV144
transverter?
The transverter I got has a PIC 16F872/1 SP with a sticker XV1.60E
and the RF Board (main board) is Rev C , I guess it's a pretty old
transverter.
Should I upgrade the firmware located in the PIC to a newer rev if
there is one and what enhencements it would bring?
Thanks in advance for your repplies.
Best 73's
Pierre-Francois, F5BQP
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