[Elecraft] XV144 transverter firmware

[Pierre-François (f5bqp_pfm)]

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) 
> <pfmonet at wanadoo.fr <mailto:pfmonet at 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
>
>     -- 
>
>     ______________________________________________________________
>     Elecraft mailing list
>     Home: http://mailman.qth.net/mailman/listinfo/elecraft
>     Help: http://mailman.qth.net/mmfaq.htm
>     Post: mailto:Elecraft at mailman.qth.net
>     <mailto:Elecraft at mailman.qth.net>
>
>     This list hosted by: http://www.qsl.net
>     Please help support this email list: http://www.qsl.net/donate.html
>     Message delivered to rfriess at usa.net <mailto:rfriess at usa.net>
>
>

--