Hi Stan,
I will explore this issue tomorrow, 20:00 here now. I was just going
through a boyish thrill of fiddling with a Sony ICF-S10Mk2 and the amazing
numbers of AM stations it picks up.. maybe it can be used at 60Khz.. for 10$ it
worth it !!
How about keeping he Rb cover open ? I measured the lamp housing at
110C and the rest at 60-70C. I dont intend to keep my units on all the time but
I dont feel good about anything running hot! Maybe a small slow fan might help.
I am fascinated by the blinking light inside at 1Hz and thats not available on
the DB connector. I did add a reverse polarity protection by soldering a 2A
diode between the center pin of the regulator and the +15 pin. I wish I can
find a schematic and what else I can do with this gizmo!
73 Raj vu2zap
At 11-02-10, you wrote:
>Hello Raj,
>
>I integrated a Symmetricom model X72 Rb into a Down East Microwave (DEMI)
>chassis
>and it does experience microphonics. This was for a friends 10 GHz transceiver
>used for portable work.
>So getting rid of the microphonics is important.
>Somehow I need to mechanically isolate the Rb from the chassis and still have
>a heat sink.
>
>Stan, W1LE
>
>
>Raj wrote:
>>While comparing a Rb FE5680 frequency reference with another RB or GPSDO I
>>find that tapping a Rb unit causes a sudden shift in the scope display
>>meaning the frequency has slightly shifted momentarily and locks back
>>steadily with a phase shift. This does not happen in another Rb FE5680.
>>
>>Would something be loose I wonder ? Any experiences?
>>
>>Cheers
>>
>>
>
>
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--
Raj, VU2ZAP
Bangalore, India.
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