Re: [Freetel-codec2] How good an oscillator can we get for using narrow channel widths?

2013-06-14 Thread Bruce Perens
On 6/14/2013 3:54 PM, Gullik Webjörn wrote: > Why not one with a tuning input while we are at it? You can get one like this for $2.18: http://www.abracon.com/Oscillators/ASVTX-09.pdf This can be pulled about 8 Hz. Which seems to be less than the potential error due to aging, etc. It gets more exp

Re: [Freetel-codec2] How good an oscillator can we get for using narrow channel widths?

2013-06-14 Thread Gullik Webjörn
Why not one with a tuning input while we are at it? Then it can be diciplined 73 de Gullik On 06/15/2013 12:46 AM, Bruce Perens wrote: > This costs less than $1.50 in 2000 quantity: > http://www.rfm.com/products/data/xtc7006.pdf > If the radio is calibrated, this gets us +-220 Hz at 440. If

[Freetel-codec2] How good an oscillator can we get for using narrow channel widths?

2013-06-14 Thread Bruce Perens
This costs less than $1.50 in 2000 quantity: http://www.rfm.com/products/data/xtc7006.pdf If the radio is calibrated, this gets us +-220 Hz at 440. If it's not calibrated, we could be several kHz off in total. And this potentially adds 3-6 mW to the standby power. It gets to $20 if we want 100 pa