Hello, Timenutters--
I only have experience with four different LPRO-101
units, but with respect to heatsinking, all 4 behaved
identically during my testing of them.
It appears that the LPRO-101 units do not require
much heatsinking. I experimented with a variety
of heatsinks and discovered that
2009/1/12 WB6BNQ :
> Steve,
>
> I am pretty sure he meant lifting off of the surface that the unit would be
> sitting
> on; i.e., the bench.
Sorry, my bad.
> Steve Rooke wrote:
>
>> 2009/1/12 Hal Murray :
>>
>> > You can get slightly better cooling if you turn it on its side/end, or lift
>> > th
Steve,
I am pretty sure he meant lifting off of the surface that the unit would be
sitting
on; i.e., the bench.
BillWB6BNQ
Steve Rooke wrote:
> 2009/1/12 Hal Murray :
>
> > You can get slightly better cooling if you turn it on its side/end, or lift
> > the fins off the surface with a coup
2009/1/12 Hal Murray :
> You can get slightly better cooling if you turn it on its side/end, or lift
> the fins off the surface with a couple of spacers so the air can get in there
> better.
Lifting the "fins" (heatsink) off the device will completely defeat
the purpose of them as the heat needs
> My heatsink appears to have a thermal resistance of about 3 degrees C
> per watt. It is similar to Thermalloy 60975.
I'll bet it's good enough, at least to get started.
Mine is just barely warm. I have a large heat sink, but it doesn't have much
in the way of fins.
If you have a large chun
I've seen Datum clocks of various sorts with these just mounted to the
chassis, no special heatsink, especially the 1RU units.
Scott
On 01/11/2009 10:13 PM, Glenn Little WB4UIV wrote:
> I have a LPRO-101. Before I power it up, I have been advised to use a
> heatsink.
> How large of a he
My heatsink appears to have a thermal resistance of about 3 degrees C per watt.
It is similar to Thermalloy 60975.
I will dig deeper into the junk box and see if I can find a heatsink
with larger fins.
Thanks for the guidance.
73
Glenn
WB4UIV
At 11:50 PM 1/11/2009, you wrote:
>Glenn Little WB
I have several of the units and made up a cable to attach 24V power, a
voltmeter, and the 10 MHz output. I watched the 10 MHz on a scope against a
Thunderbolt as an X-Y display. I did this without using a heat sink and it
took about 5 minutes or less for the BITE to indicate lock (going from +5V
Glenn Little WB4UIV wrote:
> I have a LPRO-101. Before I power it up, I have been advised to use a
> heatsink.
> How large of a heatsink do I need?
> I found an extruded heatsink in the junk box.
> This heatsink has fins about 0.50 inches high.
> The width is 2.375 inches wide.
> It is 8.125 inche
I have a LPRO-101. Before I power it up, I have been advised to use a heatsink.
How large of a heatsink do I need?
I found an extruded heatsink in the junk box.
This heatsink has fins about 0.50 inches high.
The width is 2.375 inches wide.
It is 8.125 inches long.
I plan to cut this heatsink in hal
Hi:
I've received the 60 kHz version of the C-max CMMR-6P LF time code receiver
module. Digi-Key ( 561-1014-ND) has these improperly listed in their catalog
and the CMMR-6P data sheet has a typo that may have mislead Digi-Key.
The CMMR-6P-ff is an evaluation board for the CME6005 and has the p
On Sun, Jan 11, 2009 at 11:12:20PM +0200, Stephan Sandenbergh wrote:
> Hi,
>
> Has any one got an idea what the typical phase noise specs are for the LO
> inside an ordinary analogue TV tuner is?
Many many generations here... most all current ones are PLL
synthesized but obviously many va
Hi,
Has any one got an idea what the typical phase noise specs are for the LO
inside an ordinary analogue TV tuner is?
Regards,
Stephan.
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On Sun, Jan 4, 2009 at 6:56 PM, christopher hoover wrote:
>
> Can anyone recommend a good book on the development of calendars, ideally
> from Caesar on?
Duncan Steel's "Marking Time" is good for this, although it only covers the
Western calendar.
___
t
Here is the updated Thunderbolt disciplined ADEV data from the same oscillator
after it had a couple of weeks to stabilize (the undisciplined data is the same
as previously posted). The previously reported disciplined data was from a
unit fresh out of two years of storage.
Again, these numbe
It is not Slashdot, but leapsecond.com got a mention on perlmonks.com:
http://perlmonks.com/?node_id=735502
Jamie
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