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Just so you understand where I'm coming from on this, I have a lot of test gear here for RF design etc.

But no way, NO WAY could I walk into a room, switch on a CB and tell the receiver sensitivity by simply plugging it into an aerial and tuning across the band and listening to other signals and noise on the band.

That would be a ridiculous test method for lots of reasons. Totally uncontrolled and affected by band noise etc. Even if you gave me an accurate signal generator and I tested it directly (rather than with an aerial) I would struggle to tell the S/N ratio on a fairly weak signal without further test gear. This is despite having spent all my working life designing receivers and transmitters and testing the results under controlled conditions.

So how come you can manage it?

[QUOTE="G0HZU, post: 327853, member: 19109"] Just so you understand where I'm coming from on this, I have a lot of test gear here for RF design etc. But no way, NO WAY could I walk into a room, switch on a CB and tell the receiver sensitivity by simply plugging it into an aerial and tuning across the band and listening to other signals and noise on the band. That would be a ridiculous test method for lots of reasons. Totally uncontrolled and affected by band noise etc. Even if you gave me an accurate signal generator and I tested it directly (rather than with an aerial) I would struggle to tell the S/N ratio on a fairly weak signal without further test gear. This is despite having spent all my working life designing receivers and transmitters and testing the results under controlled conditions. So how come you can manage it? [/QUOTE]

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