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-   -   ne612 IC working on 28mhz (https://www.radiobanter.com/homebrew/65542-ne612-ic-working-28mhz.html)

bruce johnson February 27th 05 06:06 AM

ne612 IC working on 28mhz
 
anybody ever had a NE612 ic working with 28mhz 3rd ot xtals as local int osc
?
bruce vk3mn



Eamon Skelton February 27th 05 11:21 AM

On Sun, 27 Feb 2005 17:06:22 +1100, bruce johnson wrote:

anybody ever had a NE612 ic working with 28mhz 3rd ot xtals as local int osc
?
bruce vk3mn


The test circuit in the SA612 data sheet uses a 34MHz 3rd OT
oscillator. You should be able to tweak it to run at 28MHz.
The oscillator section appears to be a single NPN transistor.


http://www.qsl.net/wb4vlq/sa612.pdf

73, Ed. EI9GQ.


--
Linux 2.6.10


Leon Heller February 27th 05 04:50 PM

"bruce johnson" wrote in message
...
anybody ever had a NE612 ic working with 28mhz 3rd ot xtals as local int
osc
?


Philips has an app note which includes the use of OT crystals.

73, Leon




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