It looks like the OCXOs used on some of the Trueposition GPSDOs (which also
used some Bliley OCXOs).
I really like that it has an internal OCXO available. You don't have to use it
if you have a better reference source handy, but it can be very convenient if
you don't.
BTW, the drift rate on
Hi
They probably got the OCXO for less than $5 on the internal Chinese market ….
Bob
> On Sep 30, 2019, at 5:13 PM, Jerry Hancock wrote:
>
> Someone should tell them to sell a version without that internal Bosc, just
> an external reference.
>
> Regards,
>
> Jerry
>
>> On Sep 30, 2019, at
Someone should tell them to sell a version without that internal Bosc, just an
external reference.
Regards,
Jerry
> On Sep 30, 2019, at 9:39 AM, Bob kb8tq wrote:
>
> Hi
>
> If you look at the date code on the OCXO, it is going on 5 years old. That’s
> a part that
> was bought surplus somewh
Hi
If you look at the date code on the OCXO, it is going on 5 years old. That’s a
part that
was bought surplus somewhere.
Bob
> On Sep 30, 2019, at 2:15 AM, ew via time-nuts
> wrote:
>
>
>
> From Juerg my partner in crime
>
> Atmel MEGA328
> Altera MAX II EPM570T100
> AD8307
> FTDI 1908-C
Attached is the FA2 noise floor test. The FA2 was clocked by a HP-5071A 10 MHz
output. The FA2 frequency input was the FA2 reference output signal (which
should be the 5071A output, maybe with some buffering distortion). I didn't
have the cables and T-adapter handy to split the 5071A output
An impedance sweep of the input might give a clue about the LPF. When I get
mine I'll measure it.
On 9/27/2019 11:43 AM, Mark Sims wrote:
A list member did some experimenting with the unit and came up with this very
useful information:
"press and hold RST button, then MODE toggles LPF (low p
A list member did some experimenting with the unit and came up with this very
useful information:
"press and hold RST button, then MODE toggles LPF (low pass filter), GATE
toggles input
impedance"
I wonder what the LPF cutoff freq is?
I am currently doing a noise floor test (connect ref out to
Thanks for the input. I just ordered one.
(My 78th birthday will be next month. I should be downsizing but here I am
buying more stuff.)
Wes N7WS
On 9/26/2019 6:25 PM, Mark Sims wrote:
Miy FA2 came in today. A very quick test shows that it works. It does not
appear to have the -0.0002
Miy FA2 came in today. A very quick test shows that it works. It does not
appear to have the -0.0002 Hz freq measurement bias that the FA1 has.
The 0.1 second gate time mode is pretty useless... there appears to be a 300
msec dead time between measurements in 0.1 (and 10 sec) gate time modes
Got mine today as well, Bert. Haven't gotten a chance to use it yet,
good to know you had positive results.
Don
On 2019-09-26 11:05, ew via time-nuts wrote:
Did receive FA2 counter today. Everything as promised, like the 10
second mode best.Use a Datum 2000 as source 10 MHz in the back 5 MHz
i
Did receive FA2 counter today. Everything as promised, like the 10 second mode
best.Use a Datum 2000 as source 10 MHz in the back 5 MHz in the front reliable
+- 1 on the last 12th digit.
Bert Kehren
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