[hpsdr] Horton LO

[Alex]

Plus the design needs to be able to work for the VHF, UHF and Microwave bands, with the substitution of a higher frequency VCO.

----- Original Message ----
From: Robert McGwier <rwmcgwier at comcast.net>
To: Alex <harvilchuck at yahoo.com>; High Performance Software Defined Radio Discussion List <hpsdr at hpsdr.org>
Sent: Friday, June 16, 2006 10:13:18 PM
Subject: Re: [hpsdr] Horton LO

Don't worry,  we are going too fast for ourselves.  We found a little 
hiccup.   Phil C proposes doing a PLL but I wanted to do all of that 
digitally.   I am doing calculations  that show if this provides better 
performance but at the cost of an FPGA and if so,  is it worth the extra 
cost and complexity.

Bob


Alex wrote:
> You guys are going way to fast and losing the rest of us. Take a deep breath, get a cup of coffee and look at this drawing.
> Does this, at a high-level, adequately describe what you are advocating? If all of you agree that it correct, then I will draw out the next level of detail.
>
> http://hpsdr.org/wiki/index.php?title=Image:HPSDR_uWaveOSC.jpg
>
> Alex, N3NP
>
> ----- Original Message ----
> From: Eric Ellison <ecellison at comcast.net>
> To: Robert McGwier <rwmcgwier at comcast.net>; High Performance Software Defined Radio Discussion List <hpsdr at hpsdr.org>
> Sent: Friday, June 16, 2006 8:46:02 PM
> Subject: Re: [hpsdr] Horton LO
>
> ***** High Performance Software Defined Radio Discussion List *****
>
> Bob
>
> When you are happy, and Phil_C is happy and Phil_H are happy. I'm estatic!
>
> A picture PLUEEEEEZE!
>
> Eric
>
>
> -----Original Message-----
> From: hpsdr-bounces at hpsdr.org [mailto:hpsdr-bounces at hpsdr.org] On Behalf Of
> Robert McGwier
> Sent: Friday, June 16, 2006 8:44 PM
> To: High Performance Software Defined Radio Discussion List
> Subject: [hpsdr] Horton LO
>
> ***** High Performance Software Defined Radio Discussion List *****
>
> Guido:
>
> Doing all of this fractional stuff digitally and never having to convert 
> back to analog is a big win, a huge win.   The facts are the fractional 
> N, without having to go back to analog, but retaining an all digital 
> character is a huge win since we remove tons of nastiness due to 
> attempting to produce analog waveforms.  Our ULTIMATE resolution should 
> by a 2^16 word size and in this case that is 2.5 kHz.  It is going to be 
> a big win.
>
> Bob
>
>   


-- 
AMSAT VP Engineering. Member: ARRL, AMSAT-DL, TAPR, Packrats,
NJQRP/AMQRP, QRP ARCI, QCWA, FRC. ARRL SDR Wrk Grp Chairman
Laziness is the number one inspiration for ingenuity.  Guilty as charged!





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