[hpsdr] CASMIR HF and HORTON HF Microdesigns v 4.1

[Alex]

Alberto,

Your PWM question should be directed to Phil H. I am simply re-using the transmit section of JANUS for CASMIR.
That will reduce the amount of VHDL coding required (since both CASMIR & JANUS would use similar code).

JANUS is a higher-performance replacement for the Delta-44 or Firebox for use with the SDR-1000 or other radio.
JANUS+OZY+ATLAS were the first goal of this group


But, not everyone owns a SDR-1000. Which is the second goal of this group. Build the next better thing - HPSDR

CASMIR HF and HORTON HF are a transmitter and receiver pair used as a high-performance SDR (HPSDR). 
You do not need JANUS nor a SDR-1000 (or similar radio) to use CASMIR HF and HORTON HF.
 
The HORTON HF design reuses the receive section of the JANUS design, not the actual board.
There are other designs ideas out there for HORTON, thus I called this design HORTON HF.

I'll quote N4HY
"Horton ought to be whoever gets to home plate the quickest and cheapest 
where a home run is a certain performance level.  Who cares if it is a 
QSD?  Horton needs to hear the Who.  We shouldn't care if it is with DSP 
or ESP,  QSD or XYZ, just so the Who is heard!"
I'm personally just looking to hear the who sooner as opposed to later.

There will always be new designs for cards coming out as new technologies come out. 
Paraphrasing our fearless leader Phil C., HPSDR is an experimentation platform.


Alex, N3NP

----- Original Message ----
From: Alberto I2PHD <i2phd at weaksignals.com>
To: hpsdr at hpsdr.org
Sent: Tuesday, July 11, 2006 2:49:41 PM
Subject: Re: [hpsdr] CASMIR HF and HORTON HF Microdesigns v 4.1

***** High Performance Software Defined Radio Discussion List *****

I am afraid I missed some installments of the HPSDR fascinating story.

> I/Q PWM data is received from OZY and is routed by the MAX II via low pass filters to the PI5V331 QSE.

I/Q PWM ? What is the purpose of having I and Q PWMed ? I am sure it has been discussed, but probably I missed it.
> 
> HORTON HF DESIGN NARRATIVE:
> 
> RF signals that have passed through the proper band filter come through the RF Input connector are amplified and sent to the PI5V331 QSD.
> The I/Q Output of the QSD passes through low pass filters to the AK5394A for DAC. The resultant data is sent to the MAX II which sends the data to the Host computer via OZY. The AK5394A is controlled by the MAX II. Control of the band filters is acomplished by the MAX II via the FIlter Control connector.

I was under the impression that the purpose of the JANUS card was that of being fed with the output of the QSD on the 
HORTON card. Now I read that HORTON will have its own AK5394A ADC. What am I missing ?

Thanks

73  Alberto  I2PHD
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