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From: | Dan CaJacob |
Subject: | Re: [Discuss-gnuradio] cheap reference clock using a cell phone |
Date: | Fri, 5 Apr 2013 20:50:41 -0400 |
Hi,
Exactly.
> Neat idea! Presumably he just tapped the (buffered?) output of the VCTCXO on
> the phone which has is being actively steered by the phones operation, and
Yes. Although it's actually possible to feed the 26 MHz to the E4000
> I'm guessing the breadboard is a fractional-N PLL to get it to the frequency
> needed to replace the existing RTL_SDR clock.
only (and leave the 28.8MHz xtal for the RTL).
This way, no need for PLL.
The phone was running a RX only firmware in that picture.
> Not exactly durable though. Plus you now have an active cellphone next to
> your SDR…
Cheers,
Sylvain
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