Lasers

 

Here are some picture of the gear I have been using for the resent tests we have been doing.

Click on the thumb nails for a lager picture.

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Front view of the audio box

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Inside view

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The MKI detector head

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looking inside the head

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Front view of the new Rx

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Side view of the new Rx

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Front view of the Tx

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Side view of the Tx

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Bottom view of the Tx

 

The new Rx set-up consists of a head unit built into some copper fittings similar to the one seen above, but now with SMT components inside a 10mm to 8mm copper reducer with a end cap at both ends. If you look at the front view of the new Rx you can see a magnified picture of the front of the new head. The mirror was found at a car boot sale for just £1 !. It is 10.5" across and 1.5" deep it does have some silvering missing but not enough to worry about.To see a circuit on which I've based my Rx click here (I did leave out the filter though) . As to the Tx that was built around a home made beam expander which was built out of 2" square ally and a few lens. The CW side of things was the G0MRF circuit and the voice system was built using this circuit. Both Rx and Tx are tripod mounted with the Tx on the heavier tripod for stability. The whole set-up has worked very well so far over a 22km path and it is hoped to extend this over the next few months.

 

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