SDR-14 vs SDR-IQ
Tom Azlin N4ZPT
n4zpt at cox.net
Sun Jan 17 16:15:22 CST 2010
I think they are the same from the A/D back to the computer. I have
both and they look remarkably the same on the inside. I got the -14
long before the -IQ was around. Might have just purchased the -IQ
The ability to use external filters on the -14 and down sample 6m and 2m
(and points in between with the right filter is different.) I have used
the -14 to watch 2m.
The -14 may be lower power with a lower performance clock as the -IQ
needs external power.
73, Tom n4zpt
On 1/17/2010 4:57 PM, wb4jfi wrote:
> I don't think they are not nearly as similar as you think. If I
> remember, the SDR-14 uses a similar A/D (or maybe the same one), but
> then the similarity ends. The A/D samples are processed differently,
> using different DDC chips if I remember. The SDR-14 can deliver up to a
> complete 33MHz bandwidth to the computer, if your computer can drink
> that fast. The SDR-IQ can only deliver 192kHz, if I remember
> correctly. I have an SDR-IQ, but could not afford an SDR-14.
> Whether the cost difference is accurate, or some premium is being
> charged for the SDR-14 above the hardware differences is up to the
> observer. I can look at both diagrams and give you more details, as the
> above is from memory only.
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