Author Topic: Just ordered a BG7TBL FA-2, was this a good move?  (Read 8218 times)

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Offline cncjerry

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Re: Just ordered a BG7TBL FA-2, was this a good move?
« Reply #25 on: December 12, 2020, 04:41:50 am »
I've had one since introduced.  When coupled with a GPSDO or decent reference, I can't think of anything better for the money.  Again, when using with an external reference, it does a respectable job of frequency stability testing (with Timelab).  It's small and convenient to move around the lab.  There are a number of settings available over the serial port.  It would be nice if it had a manual gate and variable voltage trigger level. It would be great if it had A to B and other simple math functions.  On that note, I don't know why bg7tbl doesn't make a TIC.     
 
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Offline CDN_Torsten

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Re: Just ordered a BG7TBL FA-2, was this a good move?
« Reply #26 on: December 12, 2020, 11:07:55 pm »
I have two FA-2s purchased a few months apart.
Overall they are quite good.
There is some variability in the quality of the internal oscillators.
I have one (lower in the image) which is quite stable over very long periods.
The other (upper in image) tends to drift  a lot.  It took me over one month to get it to stabilize after I received it.  It continues to wander significantly so I only use it with an external reference input.
 

Offline rfclown

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Re: Just ordered a BG7TBL FA-2, was this a good move?
« Reply #27 on: December 28, 2020, 11:11:46 pm »
Have you opened your units up to see what's inside? I have one FA-2 and it has a Vectron C4600A1. I'm very please with its stability. I tweaked the pot to sync with my GPSDO, and it has remained really solid (at least for a week  :)). I've been considering buying a second FA-2 for work since we have no 10 MHz reference there. It's probably a crap shoot as to what OCXO is inside.
 


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