[hpsdr] OK you smart guys

[tokio.endo2 at i.softbank.jp]

Hi All,

I'm a user of W5WC's PSDR.
Some clarification please.

1. Neither KK Console nor CuSDR has not the CAT interface.

2. PSDR 2 RX send which frequency, RX1 or RX2 frequncy.

I use a homebrew CAT interface data distributor which is connected to CAT interface. The distributor communicate with several devices, such as SteppIR sda100, Ant selector, Auto Antenna Tuner, and 100W amplifier controller.
All is controlled by the frequncy data from CAT interface.

If frequency data is to be taken without aid of CAT interface, it is a good way as far as KK Console nor CuSDR would have no CAT interface.

Tokio
JA1CCA
//Sent from iPhone

2012/12/04 12:05、David McQuate <mcquate at sonic.net> のメッセージ:

> ***** High Performance Software Defined Radio Discussion List *****
> 
> Hermes implements an interface to either Alex or (future) Apollo, with serial data including current frequency.  When multiple receivers (in a single Mercury) are being used it's a little more complicated.  Alex Tx low-pass filter is selected from the highest-frequency receiver, while the Rx high-pass filter is determined by the lowest-frequency receiver.  
> 
> Alex and Apollo data is different.  I'll bet the Racal and Cubic each have their own unique requirements.  Some of the ethernet / usb protocol specifies whether Alex or Apollo is being used.  That protocol would need to be augmented to indicate one of the other preselectors.  (And more FPGA code written, of course.)
> 
> Dave
> WA8YWQ
> 
> On 12/3/2012 6:52 PM, FRANCIS CARCIA wrote:
>> 
>> ***** High Performance Software Defined Radio Discussion List *****
>> 
>> 
>> 
>> Hi All,
>> Question: Does the operating frequency reside in a Hermes/Mercury FPGA register where it could be moved and shifted out through a serial interface?  
>> Harris, Collins, Cubic ETC all made really nice pre/post selectors designed to work in a high level RF enviorment. These devices would be perfect as a front end for SDR and some handle 1/2 of TX power. Also Racal made a nice single or dual 13 filter preselector that covers .5MHz to 30 MHz. used in their HF DF systems.  It would be very cool to have devices like these track HPSDR because duplicating the performance and quality would cost a lot of money.  I have a dual Racal preselector interfaced to my Pandora dual mercury box controlled by a switch.
>> I've also tested the Cubic preselector and find it pretty sharp. I'll control it with 4 thumbwheel switches if I have to.
>> Santa, I wasn't that bad....Frank WA1GFZ
>> 
>> 
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