[Laser] 850 nm APD, free

[Kerry Banke]

Art - I'm in the midst of wideband optical link experiments and would like 
to obtain the repeater if still available.
Thanks -Kerry Banke N6IZW -

At 10:59 PM 7/16/2004 -0400, you wrote:
>Hi Everyone,
>
>Some number of years ago, someone on this list gave me an 850 nm laser 
>repeater consisting of a fiber optic input receiver (APD) and an LED 
>transmitter (also fiber optic).
>
>My interest has grown away from wideband and high speed communication via 
>laser, so I don't need this anymore. If anyone wants it, it's theirs for 
>the price of shipping.
>
>The APD needs a 300 volt bias supply, it's not included. It's fully 
>documented with large schematics. On the front panel, there are 2 fiber 
>optic ports labelled receiver and transmitter. On the back panel, there is 
>a db 25 pin connector. It is called a 'repeater', which I think takes the 
>signal, cleans it up and re-transmits it making longer distance fiber 
>optic links possible. It is made by Artel Communications, circa 1988 
>(according to the documentation).
>
>The transmitter board has a 20.832 Mhz crystal on it, which appears to be 
>the frequency the data is modulated on.
>
>Anyway, the tx/rx assy and the docs are available to anyone who wants to 
>pay postage. Please reply off-list.
>
>Art
>
>
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