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Hi Ante,<br>
<br>
If you don't need them "new", you can find a lot of tuners "used" or
"NOS" on Ebay.<br>
Also analog PC TV-cards have nice tuners on them, also to be found
"used" on Ebay.<br>
<br>
You could probably use the PC TV card as is and use the existing
software to "tune" it and tap the IF-output and route it to Mercury.<br>
I know this has been done before, it must be somewhere on the
internet.<br>
<br>
Of course the specs are not up to "Ham standards".<br>
That's why I mentioned "not too demanding" ;-)<br>
<br>
If you really want good specs, you will have to go the route like
Phil and others on this list indicated, starting with a really good
spur and noise free wide range synthesizer.<br>
But that's a whole different and not at all trivial route!<br>
<br>
<br>
73's,<br>
<br>
Henry - PA0HJA<br>
<br>
<br>
On 9/24/2011 3:29 AM, Ante Vukorepa wrote:
<blockquote cite="mid:3FE88B5DAB9947CD9FE229A91F823B26@gmail.com"
type="cite">
<div>I've just checked out the offerings at NXP's site…
<div><br>
</div>
<div>There's a few interesting tuner chips, covering frequency
ranges of 42-1002, 42-862, 42-870, 51-1002 and 54-1002 MHz.
They seem easy enough to control via I2C, support both 3.3V
and 5V levels and even have RSSI register (which might come in
handy when combined with a front panel and an LCD, to quickly
identify stronger signals). The data sheets don't mention the
IF, i assume it's the standard 38.9 MHz.</div>
<div><br>
</div>
<div>There are two problems, though…</div>
<div>Firstly, i'm not sure what their bandwidth is, and
secondly, the phase noise figures are pretty bad (-85 to -93
dBc at 10kHz).</div>
<div><br>
</div>
<div>I'll have a look through digi-key, farnell and RS
components tuner offerings, there's bound to be more of them.</div>
</div>
<div><br>
-- <br>
Ante Vukorepa<br>
Sent with <a moz-do-not-send="true"
href="http://bit.ly/sigsprw">Sparrow</a><br>
</div>
<p style="color: #A0A0A8;">On petak, 23. rujna 2011. at 21:48,
Henry Vredegoor wrote:</p>
<blockquote type="cite"
style="border-left-style:solid;border-width:1px;margin-left:0px;padding-left:10px;">
<span>
<div>
<div>
<meta content="text/html; charset=UTF-8"
http-equiv="Content-Type">
Hi Ante,<br>
<br>
Yes, it's an older type of TV tuner nowadays.<br>
I think it would be possible to replace it with a more
common, later type (Philips) I2C tuner though.<br>
Of course the software would have to be adapted then, but
this shouldn't be too difficult if you have the specs /
manual for the I2C tuner.<br>
I think you could even extend the original frequency range
to 2 GHz ++ with an analog satellite tuner<br>
The ready made tuner modules would save you the hassle
with VHF/UHF electronics and a ditto board layout<br>
Not too bad indeed for a simple starting setup.<br>
<br>
73's,<br>
<br>
Henry - PA0HJA<br>
<br>
<br>
<br>
<br>
<br>
<br>
On 9/23/2011 5:46 PM, Ante Vukorepa wrote:
<blockquote type="cite">
<div> </div>
</blockquote>
<div>Hi,
<div><br>
</div>
<div>Seen that mentioned somewhere before and i really
liked the idea.</div>
<div>I've poked and peeked and looked about, but it
doesn't seem like the UV916 tuners can be found easily
enough over here. I do love the simplicity of it,
though, and the range is pretty nice too :)</div>
<div><br>
</div>
<div>Thanks for the heads up!</div>
</div>
<div><br>
-- <br>
Ante Vukorepa<br>
Sent with <a moz-do-not-send="true"
href="http://bit.ly/sigsprw">Sparrow</a><br>
</div>
<p style="color: #A0A0A8;">On petak, 23. rujna 2011. at
02:39, Henry Vredegoor wrote:</p>
<span>
<div>
<div>
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http-equiv="Content-Type">
Hi Ante,</div>
</div>
</span><br>
<span>
<div>
<div> </div>
</div>
</span><br>
<span>
<div>
<div> If your requirements are not too demanding,
maybe you can use this:</div>
</div>
</span><br>
<span>
<div>
<div> </div>
</div>
</span><br>
<span>
<div>
<div> <a moz-do-not-send="true"
href="http://hem.passagen.se/communication/uv916rec.html">http://hem.passagen.se/communication/uv916rec.html</a></div>
</div>
</span><br>
<span>
<div>
<div> </div>
</div>
</span><br>
<span>
<div>
<div> and use the HPSDR setup as the 38.9 MHz back-end
receiver.</div>
</div>
</span><br>
<span>
<div>
<div> Rather simple and cheap setup, but should work
nicely.</div>
</div>
</span><br>
<span>
<div>
<div> </div>
</div>
</span><br>
<span>
<div>
<div> 73's,</div>
</div>
</span><br>
<span>
<div>
<div> </div>
</div>
</span><br>
<span>
<div>
<div> Henry - PA0HJA</div>
</div>
</span><br>
<span>
<div>
<div> </div>
</div>
</span><br>
<span>
<div>
<div> </div>
</div>
</span><br>
<span></span><br>
<br>
</div>
</div>
</span> </blockquote>
<div> <br>
</div>
</blockquote>
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