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Inernational HAM Magazine 100% HAM RADIO - arkansas ares races

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10MHz/1MHz Calibrator/ Marker generator.<br />

By John R L Walker ZL3IB<br />

A simple frequency standard can be a useful accessory in the ham shack.<br />

Similarly the ability to include some sort of frequency marker into a spectrum<br />

analyser displayed is very helpful and this can be done using an external<br />

signal source. However an internal marker is handy so I constructed a very simple 10MHz/1MHz<br />

marker generator. This used a 10 MHz crystal salvaged from an old computer and in my unit produces<br />

a 'comb' of peaks on my spectrum analyser to over 350 MHz.<br />

Fig below. Marker generator<br />

(This article was first published in Break­In July/Aug 2002)<br />

73 ! ZL3IB<br />

[ <strong>HAM</strong>­MAG N.14 March 2010 ]

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