Re: Make external connector on a USB dongle


"Jeff Liebermann" <jeffl@xxxxxxxxxxxxxxxxxxxxxx> ha scritto nel messaggio
news:u15io1l2pp8fub5jce7534oc37h19a821r@xxxxxxxxxx

> That was also my original suggestion. However, I wanted to take the
> long leads and the filter out of the circuit and connect as close to
> the bandpass filter as possible.

Uhm... today I've realized this:
http://tinypic.com/hvumur.jpg

Ok, it works, but I don't know why... with the previuos modify on my PCMCIA
card, without external antenna the signal was ZERO.
Now, with this dongle, without antenna (the bluechip) I've got signal...
With antenna mounted (a simple rubber D-Link antenna) the signal is not
stronger than without...

I'm ready with 3 attemps.

with antenna connected:
1) at the end of diversity (before the filter)
2) at the end of filter (cutting C3)
3) on the SW1 place (cutting L7 and C33)

Next week I'll receive a R&S powermeter 3GHz capable, and I'll to try in
these 3 positions.
I've also a friend of mine with a Anritsu antenna/power/swr analyzer.
I'll tell you...

Thanks again for support: virtual coffe (italian espresso) payed for you.


.

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