Freq Converter for Spectrum display

[Brian Hill]

Hi all. Ok here's what I came up with after talking to a few of you before.
If you see a bo bo please let me know.
http://webpages.charter.net/brianhill/conv.jpg
I was told that a simple input was fine for my application and the Philips
data sheet shows this config and from what I read it should work. I'm taking
a chance on the inductor? If I can't get the thing to Osc. 21.4MHz, I'll
swap it out. What uH would be best for my app?

The receivers IFs are:
1st- 58.1125MHz
2nd- 8.83MHz

The S.D. input needs to be 21.4MHz

Here's what I fabed up.
http://webpages.charter.net/brianhill/conv2.jpg
http://webpages.charter.net/brianhill/conv3.jpg
http://webpages.charter.net/brianhill/conv4.jpg

73 and good DXing.
Brian
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
A lot of radios and 100' of rusty wire!
Zumbrota, Southern MN
Brian's Radio Universe
http://webpages.charter.net/brianhill/

EMAIL-
(Hide the $100 to reply!)

[Henry Kolesnik]

Looks good, have you tested it yet?

--

73
Hank WD5JFR
"Brian Hill" > wrote in message
...
> Hi all. Ok here's what I came up with after talking to a few of you
> before.
> If you see a bo bo please let me know.
> http://webpages.charter.net/brianhill/conv.jpg
> I was told that a simple input was fine for my application and the Philips
> data sheet shows this config and from what I read it should work. I'm
> taking
> a chance on the inductor? If I can't get the thing to Osc. 21.4MHz, I'll
> swap it out. What uH would be best for my app?
>
> The receivers IFs are:
> 1st- 58.1125MHz
> 2nd- 8.83MHz
>
> The S.D. input needs to be 21.4MHz
>
> Here's what I fabed up.
> http://webpages.charter.net/brianhill/conv2.jpg
> http://webpages.charter.net/brianhill/conv3.jpg
> http://webpages.charter.net/brianhill/conv4.jpg
>
> 73 and good DXing.
> Brian
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> A lot of radios and 100' of rusty wire!
> Zumbrota, Southern MN
> Brian's Radio Universe
> http://webpages.charter.net/brianhill/
>
> EMAIL-
> (Hide the $100 to reply!)
>
>