On 2/8/18 5:34 AM, Mark Goldberg wrote:
What is the phase noise like on the cheap TCXO? Being on frequency is far
from the only characteristic that matters. I did some research on cheap
TCXOs for Kenwood radios and found truly awful phase noise and lots of
spurs above and below the oscillator frequency. I don't know if these
characteristics are important for your unit.
One eBay source says -125 dBc/1kHz. (Should be stated as -125 dBc/Hz @ 1
kHz). That is not very good. I found the cheap TCXOs I tested actually had
worse phase noise at 15 - 20 kHz offset.
Vectron
VT-702 (the first one in the list online)
-99 at 10Hz
-123 at 100Hz
-143 at 1kHz
going to Mouser and looking for the cheapest 10MHz TCXO
FOX924 (about $2) - no data
SiT5000 (about ) - -140 dBc@1kHz, -150 dBcfrom 10k to 100k, -160 @ 1M
(no price)
ECS -TXO-3225-100-TR ($2.71 each) - -135dBc @ 1 kHz
ASTX-H11 ($3.16) -130dBc @ 1 kHz, -158dBc @100k
FOX922CE at 16.369 MHz, -145 @ 10kHz
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