Hi NivagSwerdna , were are you in the uk?
read this post from Macbeth on the 1st page,
Dave
Online Macbeth
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Re: A look at my Symmetricom GPSDO / 10MHz reference (OCXO + Furuno receiver)
« Reply #15 on: December 13, 2015, 10:40:48 AM »
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The Symmetricom and the Trimble versions of these should run at >5V-5.5V with a 2A supply no problem, PSU lead losses accounted for. Don't go too much over 5V as the supply is directly sent (minus a diode drop) to the external antenna, which are usually 3-5V.
The Symmetricom has a 12V OCXO and uses a TI PTN4050C boost converter while I understand the Trimble uses a 5V OCXO so doesn't need this.
My Symmetricom boost converter was DOA, as was the missing MCX antenna socket and the broken MACT switch.
The seller gave me the runaround and eventually pretended to send me a replacement board out and try and get me to "wait for it" one week after the ebay dispute timeout period. Of course with my simple notification that I would involve ebay he refunded me at the 11th hour.
I'm now using a cheap XL6009 instead. There are some other issues with starting this Symmetricom board with less than 1.7A too...
« Last Edit: December 13, 2015, 10:43:09 AM by Macbeth »