41677Re: [softrock40] Re: An Idea, tell me what you think:
- Mar 2, 2010
I think Kanga US has a 1-100 Mhz DDS.....
73 de N4MVL Lee
--- On Tue, 3/2/10, Loftur Jónasson <lofturj@...> wrote:
From: Loftur Jónasson <lofturj@...>
Subject: Re: [softrock40] Re: An Idea, tell me what you think:
Date: Tuesday, March 2, 2010, 9:29 AM
Just to chime with my two cents :)
> There is a "black hole" in the ham kit/product market it is the VFO.
> What is needed is a VFO kit (DDS or Si570-based) with an actual
> "spinner" knob that covers near DC through 120 MHz (for divide by four
> PC-based SDR's) or at least near DC through 75MHz for dual conversion
> superhets with 45MHz first IF and 455kHz second IF. There is nothing
> like this out there. We have ADI9834/5-based knob VFO's that go through
> 34MHz or 21MHz with pretty lousy SFDR, then there are the AD99XX DDS's,
> expensive and I don't know of one with a tuning knob.
> Yes I know about KB5CQ's Si570 tuner/display, it is not a "spinner".___
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