Thread: Oscilloscope
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Old 17th Aug 2018, 6:44 pm   #5
Join Date: Aug 2011
Location: Newcastle, Tyne and Wear, UK.
Posts: 4,511
Default Re: Oscilloscope

For CB/10M you may not need anything as ambitious as a 50MHz scope because all you really want to be able to see is the relative size of the RF envelope at various stages throughout the transmitter rather than individual cycles of the RF signal, so you may be able to use a 20MHz scope, that's all I have ever used to work on that type of set.

You can't resolve individual cycles of the 27/28MHz RF signal on a 20MHz scope so it all blends into a thick blue or green 'band', the thicker the band, the bigger the signal. If you're just hunting through the transmitter for the point where the signal disappears when it should be getting bigger, that is probably all you need.

Of course it doesn't hurt to aim high, and surplus 50 / 60Mhz scopes are a lot cheaper than they used to be.
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