[Premium-Rx] RA3791 OPTIONS?

[VK3XYZ]

Hi Pat,
I'm not really familiar with the receiver however I believe most of these 
options are opened up with later firmware. I do know that ISB requires the 
3rd DSP which is the one closest to the front panel and I think it also 
requires the codec, IC 23 (at the top rh corner when looking from the front, 
it's a PLCC IC). Further options, according to the user manual, are accessed 
when a dongle IC is fitted in PD6 position (another PLCC socket at the front 
of the receiver). I'm not sure what those options are that require the logic 
device or the 4th DSP.  The 4th DSP may be to do with digital IFs? My 
receiver is fitted with only 2 DSP and I have the passband notch and noise 
blanker. Firmware is RX:P90550/08, DSP: P90553/07.

Anyway I've posted a copy of the user manual on my website and it can be 
found under the DATA tab.

http://members.iimetro.com.au/~gcd

I'd be interested in any further info you find out on the options

Cheers
Greg